Cognizant Technology Solutions Corporation vs Zscaler Inc.
WatchlistCTSH / ZSPrices through Oct 22, 2026
Why these are rivals: #2 and #3 by market value ($35B vs $30B) with SEC SIC 7371 (Services-Computer Programming Services).
Rivals, but right now the price gap does not have a measured habit of closing, so there is no paper idea, whatever the gap.
- Co-movement: daily return correlation, 252 sessions: 0.28 (needs >= 0.60)
- Mean reversion: ADF t-statistic of the spread: -2.49 (needs <= -2.873 (5% critical value))
Business leadership
CTSH is the larger business
Annual revenue reported to the SEC. Scale, not market share.
| Year | CTSH | ZS | Larger |
|---|---|---|---|
| 2025 | $21.1B | $2.7B | CTSH |
| 2024 | $19.7B | $2.2B | CTSH |
| 2023 | $19.4B | $1.6B | CTSH |
| 2022 | $19.4B | $1.1B | CTSH |
| 2021 | $18.5B | $673M | CTSH |
| 2020 | $16.7B | $431M | CTSH |
CTSH led in every year with figures for both. Market value: CTSH $30.1B, ZS $34.7B.
Stock leadership
ZS is ahead now
Measured against the pair's own last 252 trading days.
ZS leads CTSH by 0.50 standard deviations: +10.3% over its usual price ratio. 4 lead switches in the last year.
| Price change | 3 mo | 6 mo | 12 mo |
|---|---|---|---|
| CTSH | +62.2% | +33.8% | +7.2% |
| ZS | +67.1% | +78.8% | -23.4% |
Relationship
Not a measured twin today
Only these tests can make a pair tradable on paper.
- Pass
- Aligned sessions: 2163 (needs >= 254)
- Fail
- Co-movement: daily return correlation, 252 sessions: 0.28 (needs >= 0.60)
- Fail
- Mean reversion: ADF t-statistic of the spread: -2.49 (needs <= -2.873 (5% critical value))
- Pass
- Speed: half-life of the spread, sessions: 19.40 (needs <= 63)
- Data
- Both stocks current
The twins over two years
Prices side by side, and the gap between them
CTSH Cognizant Technology Solutions Corporation ZS Zscaler Inc.Price index, 100 = 2024-10-18. Tint = which stock is ahead of the pair's usual 1-year relationship (z beyond +/-0.5).
Spread z-score: CTSH relative to ZS, against the 252 sessions before each day. Above 0: CTSH ahead; below 0: ZS ahead. Lines at +/-2 (idea) and +/-4 (stop).
Data table (504 sessions)
| Date | CTSH index | ZS index | z | Ahead |
|---|---|---|---|---|
| 2026-10-22 | 94.51 | 125.13 | -0.50 | ZS ahead |
| 2026-10-21 | 89.17 | 121.75 | -0.64 | ZS ahead |
| 2026-10-20 | 87.41 | 112.89 | -0.35 | near the usual relationship |
| 2026-10-19 | 85.63 | 111.85 | -0.40 | near the usual relationship |
| 2026-10-16 | 84.65 | 109.14 | -0.32 | near the usual relationship |
| 2026-10-15 | 84.32 | 116.01 | -0.63 | ZS ahead |
| 2026-10-14 | 80.09 | 116.20 | -0.88 | ZS ahead |
| 2026-10-13 | 78.63 | 120.34 | -1.12 | ZS ahead |
| 2026-10-12 | 76.51 | 118.83 | -1.18 | ZS ahead |
| 2026-10-09 | 75.90 | 123.01 | -1.37 | ZS ahead |
| 2026-10-08 | 76.94 | 114.10 | -0.95 | ZS ahead |
| 2026-10-07 | 73.17 | 112.39 | -1.10 | ZS ahead |
| 2026-10-06 | 73.36 | 111.70 | -1.05 | ZS ahead |
| 2026-10-05 | 74.58 | 106.20 | -0.73 | ZS ahead |
| 2026-10-02 | 75.01 | 103.47 | -0.57 | ZS ahead |
| 2026-10-01 | 78.05 | 104.62 | -0.43 | near the usual relationship |
| 2026-09-30 | 73.64 | 104.95 | -0.70 | ZS ahead |
| 2026-09-29 | 72.87 | 104.39 | -0.72 | ZS ahead |
| 2026-09-28 | 72.76 | 104.94 | -0.74 | ZS ahead |
| 2026-09-25 | 73.50 | 101.60 | -0.55 | ZS ahead |
| 2026-09-24 | 73.29 | 112.96 | -1.03 | ZS ahead |
| 2026-09-23 | 75.82 | 112.86 | -0.87 | ZS ahead |
| 2026-09-22 | 75.23 | 110.62 | -0.80 | ZS ahead |
| 2026-09-21 | 76.13 | 109.01 | -0.68 | ZS ahead |
| 2026-09-18 | 76.76 | 103.84 | -0.43 | near the usual relationship |
| 2026-09-17 | 79.33 | 103.93 | -0.28 | near the usual relationship |
| 2026-09-16 | 79.29 | 100.83 | -0.14 | near the usual relationship |
| 2026-09-15 | 81.13 | 102.04 | -0.09 | near the usual relationship |
| 2026-09-14 | 82.18 | 100.91 | +0.02 | near the usual relationship |
| 2026-09-11 | 76.92 | 86.60 | +0.40 | near the usual relationship |
| 2026-09-10 | 74.77 | 86.04 | +0.31 | near the usual relationship |
| 2026-09-09 | 74.62 | 87.42 | +0.24 | near the usual relationship |
| 2026-09-08 | 76.82 | 85.23 | +0.48 | near the usual relationship |
| 2026-09-04 | 79.88 | 89.36 | +0.45 | near the usual relationship |
| 2026-09-03 | 82.87 | 93.57 | +0.41 | near the usual relationship |
| 2026-09-02 | 81.28 | 90.91 | +0.46 | near the usual relationship |
| 2026-09-01 | 81.27 | 93.87 | +0.33 | near the usual relationship |
| 2026-08-31 | 82.79 | 99.14 | +0.18 | near the usual relationship |
| 2026-08-28 | 82.10 | 96.96 | +0.24 | near the usual relationship |
| 2026-08-27 | 81.74 | 98.57 | +0.16 | near the usual relationship |
| 2026-08-26 | 79.60 | 89.63 | +0.45 | near the usual relationship |
| 2026-08-25 | 80.85 | 88.64 | +0.57 | CTSH ahead |
| 2026-08-24 | 79.74 | 92.66 | +0.33 | near the usual relationship |
| 2026-08-21 | 79.32 | 95.65 | +0.18 | near the usual relationship |
| 2026-08-20 | 78.10 | 92.07 | +0.28 | near the usual relationship |
| 2026-08-19 | 78.12 | 97.15 | +0.05 | near the usual relationship |
| 2026-08-18 | 74.08 | 97.73 | -0.19 | near the usual relationship |
| 2026-08-17 | 72.58 | 97.07 | -0.24 | near the usual relationship |
| 2026-08-14 | 75.37 | 96.63 | -0.06 | near the usual relationship |
| 2026-08-13 | 76.01 | 99.04 | -0.13 | near the usual relationship |
| 2026-08-12 | 74.62 | 93.32 | +0.05 | near the usual relationship |
| 2026-08-11 | 75.13 | 93.97 | +0.05 | near the usual relationship |
| 2026-08-10 | 74.76 | 92.98 | +0.08 | near the usual relationship |
| 2026-08-07 | 73.94 | 88.77 | +0.23 | near the usual relationship |
| 2026-08-06 | 72.94 | 85.57 | +0.33 | near the usual relationship |
| 2026-08-05 | 71.51 | 85.07 | +0.28 | near the usual relationship |
| 2026-08-04 | 71.96 | 85.90 | +0.27 | near the usual relationship |
| 2026-08-03 | 70.73 | 81.29 | +0.43 | near the usual relationship |
| 2026-07-31 | 70.96 | 79.57 | +0.54 | CTSH ahead |
| 2026-07-30 | 69.10 | 78.10 | +0.51 | CTSH ahead |
| 2026-07-29 | 71.76 | 80.93 | +0.52 | CTSH ahead |
| 2026-07-28 | 64.50 | 79.80 | +0.15 | near the usual relationship |
| 2026-07-27 | 60.32 | 77.52 | -0.01 | near the usual relationship |
| 2026-07-24 | 58.27 | 74.90 | +0.00 | near the usual relationship |
| 2026-07-23 | 55.14 | 73.52 | -0.15 | near the usual relationship |
| 2026-07-22 | 55.36 | 74.87 | -0.21 | near the usual relationship |
| 2026-07-21 | 55.94 | 78.27 | -0.34 | near the usual relationship |
| 2026-07-20 | 57.23 | 78.85 | -0.28 | near the usual relationship |
| 2026-07-17 | 57.40 | 78.91 | -0.27 | near the usual relationship |
| 2026-07-16 | 57.13 | 77.06 | -0.19 | near the usual relationship |
| 2026-07-15 | 55.36 | 77.99 | -0.36 | near the usual relationship |
| 2026-07-14 | 55.17 | 80.04 | -0.48 | near the usual relationship |
| 2026-07-13 | 56.62 | 74.64 | -0.09 | near the usual relationship |
| 2026-07-10 | 54.58 | 73.30 | -0.16 | near the usual relationship |
| 2026-07-09 | 55.64 | 77.43 | -0.30 | near the usual relationship |
| 2026-07-08 | 54.40 | 75.55 | -0.29 | near the usual relationship |
| 2026-07-07 | 56.33 | 78.68 | -0.31 | near the usual relationship |
| 2026-07-06 | 53.04 | 79.16 | -0.57 | ZS ahead |
| 2026-07-02 | 53.83 | 77.54 | -0.43 | near the usual relationship |
| 2026-07-01 | 52.65 | 77.07 | -0.49 | near the usual relationship |
| 2026-06-30 | 49.65 | 74.29 | -0.58 | ZS ahead |
| 2026-06-29 | 49.67 | 72.42 | -0.47 | near the usual relationship |
| 2026-06-26 | 51.32 | 69.61 | -0.18 | near the usual relationship |
| 2026-06-25 | 50.19 | 65.15 | +0.00 | near the usual relationship |
| 2026-06-24 | 53.13 | 66.98 | +0.12 | near the usual relationship |
| 2026-06-23 | 52.50 | 66.40 | +0.11 | near the usual relationship |
| 2026-06-22 | 53.63 | 65.29 | +0.27 | near the usual relationship |
| 2026-06-18 | 56.03 | 65.71 | +0.42 | near the usual relationship |
| 2026-06-17 | 62.59 | 65.46 | +0.88 | CTSH ahead |
| 2026-06-16 | 65.45 | 66.96 | +0.97 | CTSH ahead |
| 2026-06-15 | 65.15 | 68.64 | +0.87 | CTSH ahead |
| 2026-06-12 | 66.88 | 68.16 | +1.00 | CTSH ahead |
| 2026-06-11 | 65.62 | 66.37 | +1.04 | CTSH ahead |
| 2026-06-10 | 66.42 | 65.64 | +1.14 | CTSH ahead |
| 2026-06-09 | 67.87 | 66.23 | +1.20 | CTSH ahead |
| 2026-06-08 | 67.94 | 68.02 | +1.11 | CTSH ahead |
| 2026-06-05 | 68.22 | 68.83 | +1.09 | CTSH ahead |
| 2026-06-04 | 68.46 | 71.19 | +0.97 | CTSH ahead |
| 2026-06-03 | 68.60 | 70.72 | +1.02 | CTSH ahead |
| 2026-06-02 | 70.69 | 75.86 | +0.86 | CTSH ahead |
| 2026-06-01 | 73.28 | 81.95 | +0.70 | CTSH ahead |
| 2026-05-29 | 71.48 | 73.54 | +1.04 | CTSH ahead |
| 2026-05-28 | 69.04 | 68.44 | +1.20 | CTSH ahead |
| 2026-05-27 | 68.15 | 66.53 | +1.27 | CTSH ahead |
| 2026-05-26 | 66.42 | 97.15 | -0.38 | near the usual relationship |
| 2026-05-22 | 67.63 | 95.98 | -0.26 | near the usual relationship |
| 2026-05-21 | 67.08 | 90.00 | -0.03 | near the usual relationship |
| 2026-05-20 | 65.77 | 91.81 | -0.19 | near the usual relationship |
| 2026-05-19 | 65.23 | 92.23 | -0.24 | near the usual relationship |
| 2026-05-18 | 65.89 | 91.94 | -0.19 | near the usual relationship |
| 2026-05-15 | 60.42 | 84.76 | -0.22 | near the usual relationship |
| 2026-05-14 | 59.04 | 80.89 | -0.12 | near the usual relationship |
| 2026-05-13 | 58.94 | 80.22 | -0.10 | near the usual relationship |
| 2026-05-12 | 61.19 | 76.93 | +0.23 | near the usual relationship |
| 2026-05-11 | 63.14 | 78.35 | +0.28 | near the usual relationship |
| 2026-05-08 | 66.26 | 80.06 | +0.39 | near the usual relationship |
| 2026-05-07 | 66.59 | 80.41 | +0.39 | near the usual relationship |
| 2026-05-06 | 65.81 | 73.06 | +0.73 | CTSH ahead |
| 2026-05-05 | 66.50 | 74.40 | +0.70 | CTSH ahead |
| 2026-05-04 | 66.49 | 74.84 | +0.68 | CTSH ahead |
| 2026-05-01 | 67.22 | 73.58 | +0.80 | CTSH ahead |
| 2026-04-30 | 67.82 | 68.78 | +1.11 | CTSH ahead |
| 2026-04-29 | 70.13 | 70.91 | +1.13 | CTSH ahead |
| 2026-04-28 | 70.67 | 71.61 | +1.13 | CTSH ahead |
| 2026-04-27 | 70.04 | 70.58 | +1.16 | CTSH ahead |
| 2026-04-24 | 70.65 | 71.31 | +1.16 | CTSH ahead |
| 2026-04-23 | 70.64 | 69.98 | +1.24 | CTSH ahead |
| 2026-04-22 | 75.40 | 75.08 | +1.22 | CTSH ahead |
| 2026-04-21 | 77.50 | 73.48 | +1.43 | CTSH ahead |
| 2026-04-20 | 77.26 | 70.94 | +1.58 | CTSH ahead |
| 2026-04-17 | 78.59 | 70.88 | +1.66 | CTSH ahead |
| 2026-04-16 | 77.60 | 70.70 | +1.63 | CTSH ahead |
| 2026-04-15 | 77.42 | 68.95 | +1.74 | CTSH ahead |
| 2026-04-14 | 76.97 | 64.57 | +2.02 | CTSH ahead |
| 2026-04-13 | 77.60 | 64.53 | +2.07 | CTSH ahead |
| 2026-04-10 | 74.26 | 62.13 | +2.07 | CTSH ahead |
| 2026-04-09 | 75.90 | 64.33 | +2.03 | CTSH ahead |
| 2026-04-08 | 78.21 | 72.55 | +1.64 | CTSH ahead |
| 2026-04-07 | 78.83 | 74.78 | +1.55 | CTSH ahead |
| 2026-04-06 | 79.94 | 73.43 | +1.70 | CTSH ahead |
| 2026-04-02 | 80.18 | 72.92 | +1.76 | CTSH ahead |
| 2026-04-01 | 78.53 | 71.93 | +1.73 | CTSH ahead |
| 2026-03-31 | 78.65 | 73.83 | +1.63 | CTSH ahead |
| 2026-03-30 | 78.28 | 72.24 | +1.72 | CTSH ahead |
| 2026-03-27 | 76.58 | 70.08 | +1.77 | CTSH ahead |
| 2026-03-26 | 77.90 | 74.47 | +1.58 | CTSH ahead |
| 2026-03-25 | 76.65 | 73.39 | +1.58 | CTSH ahead |
| 2026-03-24 | 77.23 | 73.37 | +1.63 | CTSH ahead |
| 2026-03-23 | 79.41 | 79.89 | +1.37 | CTSH ahead |
| 2026-03-20 | 79.58 | 79.72 | +1.39 | CTSH ahead |
| 2026-03-19 | 78.91 | 81.79 | +1.24 | CTSH ahead |
| 2026-03-18 | 77.29 | 82.10 | +1.13 | CTSH ahead |
| 2026-03-17 | 78.62 | 82.10 | +1.20 | CTSH ahead |
| 2026-03-16 | 78.27 | 80.89 | +1.25 | CTSH ahead |
| 2026-03-13 | 77.40 | 80.92 | +1.19 | CTSH ahead |
| 2026-03-12 | 78.44 | 79.79 | +1.32 | CTSH ahead |
| 2026-03-11 | 80.04 | 80.95 | +1.34 | CTSH ahead |
| 2026-03-10 | 80.74 | 82.42 | +1.30 | CTSH ahead |
| 2026-03-09 | 82.88 | 85.58 | +1.24 | CTSH ahead |
| 2026-03-06 | 84.95 | 86.34 | +1.31 | CTSH ahead |
| 2026-03-05 | 84.33 | 85.24 | +1.33 | CTSH ahead |
| 2026-03-04 | 83.49 | 82.21 | +1.45 | CTSH ahead |
| 2026-03-03 | 82.49 | 81.40 | +1.44 | CTSH ahead |
| 2026-03-02 | 81.41 | 78.20 | +1.56 | CTSH ahead |
| 2026-02-27 | 82.60 | 77.36 | +1.67 | CTSH ahead |
| 2026-02-26 | 83.29 | 88.08 | +1.12 | CTSH ahead |
| 2026-02-25 | 78.63 | 81.94 | +1.18 | CTSH ahead |
| 2026-02-24 | 78.28 | 78.61 | +1.35 | CTSH ahead |
| 2026-02-23 | 78.37 | 75.41 | +1.54 | CTSH ahead |
| 2026-02-20 | 83.37 | 84.07 | +1.33 | CTSH ahead |
| 2026-02-19 | 83.32 | 88.94 | +1.07 | CTSH ahead |
| 2026-02-18 | 85.65 | 90.59 | +1.11 | CTSH ahead |
| 2026-02-17 | 83.56 | 90.83 | +0.98 | CTSH ahead |
| 2026-02-13 | 85.32 | 93.53 | +0.94 | CTSH ahead |
| 2026-02-12 | 84.40 | 89.94 | +1.06 | CTSH ahead |
| 2026-02-11 | 90.91 | 90.00 | +1.39 | CTSH ahead |
| 2026-02-10 | 95.60 | 91.75 | +1.53 | CTSH ahead |
| 2026-02-09 | 95.64 | 89.56 | +1.64 | CTSH ahead |
| 2026-02-06 | 98.82 | 88.06 | +1.87 | CTSH ahead |
| 2026-02-05 | 98.51 | 89.15 | +1.80 | CTSH ahead |
| 2026-02-04 | 98.35 | 97.78 | +1.38 | CTSH ahead |
| 2026-02-03 | 95.51 | 98.97 | +1.20 | CTSH ahead |
| 2026-02-02 | 106.29 | 105.58 | +1.39 | CTSH ahead |
| 2026-01-30 | 105.21 | 105.26 | +1.36 | CTSH ahead |
| 2026-01-29 | 105.71 | 105.59 | +1.37 | CTSH ahead |
| 2026-01-28 | 106.79 | 112.60 | +1.12 | CTSH ahead |
| 2026-01-27 | 108.53 | 115.61 | +1.07 | CTSH ahead |
| 2026-01-26 | 109.76 | 112.92 | +1.23 | CTSH ahead |
| 2026-01-23 | 107.92 | 110.32 | +1.25 | CTSH ahead |
| 2026-01-22 | 108.47 | 109.63 | +1.30 | CTSH ahead |
| 2026-01-21 | 107.73 | 109.82 | +1.26 | CTSH ahead |
| 2026-01-20 | 105.40 | 108.58 | +1.21 | CTSH ahead |
| 2026-01-16 | 108.64 | 112.62 | +1.19 | CTSH ahead |
| 2026-01-15 | 108.74 | 110.83 | +1.26 | CTSH ahead |
| 2026-01-14 | 111.15 | 112.77 | +1.28 | CTSH ahead |
| 2026-01-13 | 108.29 | 114.12 | +1.11 | CTSH ahead |
| 2026-01-12 | 109.27 | 114.01 | +1.15 | CTSH ahead |
| 2026-01-09 | 109.31 | 114.06 | +1.15 | CTSH ahead |
| 2026-01-08 | 109.96 | 115.95 | +1.10 | CTSH ahead |
| 2026-01-07 | 107.83 | 121.66 | +0.80 | CTSH ahead |
| 2026-01-06 | 108.49 | 116.85 | +1.00 | CTSH ahead |
| 2026-01-05 | 104.65 | 117.24 | +0.82 | CTSH ahead |
| 2026-01-02 | 104.21 | 116.08 | +0.84 | CTSH ahead |
| 2025-12-31 | 106.41 | 118.37 | +0.84 | CTSH ahead |
| 2025-12-30 | 107.87 | 119.69 | +0.85 | CTSH ahead |
| 2025-12-29 | 108.97 | 120.00 | +0.88 | CTSH ahead |
| 2025-12-26 | 109.71 | 121.32 | +0.86 | CTSH ahead |
| 2025-12-24 | 109.51 | 120.84 | +0.86 | CTSH ahead |
| 2025-12-23 | 109.21 | 120.69 | +0.85 | CTSH ahead |
| 2025-12-22 | 109.24 | 122.13 | +0.80 | CTSH ahead |
| 2025-12-19 | 109.50 | 122.39 | +0.79 | CTSH ahead |
| 2025-12-18 | 107.38 | 121.62 | +0.73 | CTSH ahead |
| 2025-12-17 | 107.22 | 119.17 | +0.81 | CTSH ahead |
| 2025-12-16 | 107.22 | 122.51 | +0.69 | CTSH ahead |
| 2025-12-15 | 107.76 | 121.21 | +0.76 | CTSH ahead |
| 2025-12-12 | 107.62 | 124.35 | +0.64 | CTSH ahead |
| 2025-12-11 | 107.46 | 127.40 | +0.53 | CTSH ahead |
| 2025-12-10 | 106.69 | 128.04 | +0.47 | near the usual relationship |
| 2025-12-09 | 103.78 | 127.89 | +0.36 | near the usual relationship |
| 2025-12-08 | 103.47 | 128.88 | +0.31 | near the usual relationship |
| 2025-12-05 | 103.49 | 127.72 | +0.34 | near the usual relationship |
| 2025-12-04 | 102.82 | 127.28 | +0.33 | near the usual relationship |
| 2025-12-03 | 101.59 | 128.24 | +0.24 | near the usual relationship |
| 2025-12-02 | 99.60 | 127.19 | +0.19 | near the usual relationship |
| 2025-12-01 | 99.27 | 128.04 | +0.14 | near the usual relationship |
| 2025-11-28 | 99.63 | 132.36 | +0.02 | near the usual relationship |
| 2025-11-26 | 98.78 | 132.61 | -0.03 | near the usual relationship |
| 2025-11-25 | 98.01 | 152.48 | -0.65 | ZS ahead |
| 2025-11-24 | 96.05 | 147.54 | -0.60 | ZS ahead |
| 2025-11-21 | 97.41 | 144.73 | -0.47 | near the usual relationship |
| 2025-11-20 | 92.76 | 147.22 | -0.75 | ZS ahead |
| 2025-11-19 | 92.68 | 153.58 | -0.94 | ZS ahead |
| 2025-11-18 | 91.99 | 154.26 | -0.99 | ZS ahead |
| 2025-11-17 | 91.24 | 155.21 | -1.06 | ZS ahead |
| 2025-11-14 | 93.10 | 157.60 | -1.05 | ZS ahead |
| 2025-11-13 | 94.31 | 162.41 | -1.13 | ZS ahead |
| 2025-11-12 | 95.13 | 166.88 | -1.22 | ZS ahead |
| 2025-11-11 | 93.76 | 174.35 | -1.47 | ZS ahead |
| 2025-11-10 | 93.44 | 173.10 | -1.47 | ZS ahead |
| 2025-11-07 | 93.85 | 168.42 | -1.35 | ZS ahead |
| 2025-11-06 | 93.37 | 167.32 | -1.35 | ZS ahead |
| 2025-11-05 | 95.72 | 170.46 | -1.34 | ZS ahead |
| 2025-11-04 | 93.35 | 172.78 | -1.51 | ZS ahead |
| 2025-11-03 | 93.24 | 176.97 | -1.63 | ZS ahead |
| 2025-10-31 | 93.44 | 174.28 | -1.58 | ZS ahead |
| 2025-10-30 | 92.55 | 169.49 | -1.51 | ZS ahead |
| 2025-10-29 | 91.91 | 168.92 | -1.54 | ZS ahead |
| 2025-10-28 | 86.95 | 173.14 | -1.90 | ZS ahead |
| 2025-10-27 | 87.24 | 171.74 | -1.87 | ZS ahead |
| 2025-10-24 | 87.00 | 169.99 | -1.86 | ZS ahead |
| 2025-10-23 | 87.22 | 167.76 | -1.81 | ZS ahead |
| 2025-10-22 | 87.63 | 162.05 | -1.66 | ZS ahead |
| 2025-10-21 | 88.17 | 163.34 | -1.68 | ZS ahead |
| 2025-10-20 | 85.51 | 160.99 | -1.77 | ZS ahead |
| 2025-10-17 | 84.72 | 158.02 | -1.75 | ZS ahead |
| 2025-10-16 | 83.94 | 157.49 | -1.80 | ZS ahead |
| 2025-10-15 | 85.58 | 159.12 | -1.77 | ZS ahead |
| 2025-10-14 | 86.24 | 158.83 | -1.75 | ZS ahead |
| 2025-10-13 | 85.05 | 164.75 | -2.00 | ZS ahead |
| 2025-10-10 | 84.36 | 163.09 | -2.01 | ZS ahead |
| 2025-10-09 | 87.96 | 165.89 | -1.92 | ZS ahead |
| 2025-10-08 | 87.69 | 165.20 | -1.94 | ZS ahead |
| 2025-10-07 | 87.10 | 154.07 | -1.67 | ZS ahead |
| 2025-10-06 | 86.92 | 160.64 | -1.88 | ZS ahead |
| 2025-10-03 | 86.74 | 160.73 | -1.92 | ZS ahead |
| 2025-10-02 | 85.90 | 161.88 | -2.02 | ZS ahead |
| 2025-10-01 | 85.29 | 160.27 | -2.02 | ZS ahead |
| 2025-09-30 | 85.99 | 157.71 | -1.93 | ZS ahead |
| 2025-09-29 | 86.00 | 156.25 | -1.91 | ZS ahead |
| 2025-09-26 | 85.87 | 155.07 | -1.90 | ZS ahead |
| 2025-09-25 | 85.47 | 150.87 | -1.81 | ZS ahead |
| 2025-09-24 | 87.64 | 149.69 | -1.67 | ZS ahead |
| 2025-09-23 | 86.76 | 152.25 | -1.82 | ZS ahead |
| 2025-09-22 | 87.38 | 153.45 | -1.84 | ZS ahead |
| 2025-09-19 | 85.82 | 154.87 | -1.99 | ZS ahead |
| 2025-09-18 | 90.08 | 153.21 | -1.73 | ZS ahead |
| 2025-09-17 | 89.78 | 147.08 | -1.56 | ZS ahead |
| 2025-09-16 | 88.68 | 148.39 | -1.68 | ZS ahead |
| 2025-09-15 | 87.94 | 150.34 | -1.80 | ZS ahead |
| 2025-09-12 | 88.68 | 149.04 | -1.73 | ZS ahead |
| 2025-09-11 | 90.45 | 150.87 | -1.71 | ZS ahead |
| 2025-09-10 | 88.67 | 146.72 | -1.68 | ZS ahead |
| 2025-09-09 | 90.74 | 148.57 | -1.65 | ZS ahead |
| 2025-09-08 | 91.27 | 148.20 | -1.62 | ZS ahead |
| 2025-09-05 | 92.08 | 144.31 | -1.46 | ZS ahead |
| 2025-09-04 | 91.60 | 141.18 | -1.39 | ZS ahead |
| 2025-09-03 | 92.08 | 142.40 | -1.42 | ZS ahead |
| 2025-09-02 | 92.03 | 144.50 | -1.51 | ZS ahead |
| 2025-08-29 | 92.63 | 145.81 | -1.54 | ZS ahead |
| 2025-08-28 | 91.95 | 147.58 | -1.65 | ZS ahead |
| 2025-08-27 | 92.71 | 143.71 | -1.49 | ZS ahead |
| 2025-08-26 | 91.90 | 140.88 | -1.45 | ZS ahead |
| 2025-08-25 | 92.51 | 141.92 | -1.46 | ZS ahead |
| 2025-08-22 | 92.78 | 143.42 | -1.52 | ZS ahead |
| 2025-08-21 | 91.13 | 142.28 | -1.58 | ZS ahead |
| 2025-08-20 | 90.37 | 144.10 | -1.70 | ZS ahead |
| 2025-08-19 | 90.85 | 144.69 | -1.72 | ZS ahead |
| 2025-08-18 | 89.87 | 145.80 | -1.83 | ZS ahead |
| 2025-08-15 | 89.74 | 144.71 | -1.82 | ZS ahead |
| 2025-08-14 | 88.94 | 142.62 | -1.81 | ZS ahead |
| 2025-08-13 | 90.28 | 146.19 | -1.88 | ZS ahead |
| 2025-08-12 | 88.17 | 144.96 | -1.99 | ZS ahead |
| 2025-08-11 | 88.65 | 142.72 | -1.90 | ZS ahead |
| 2025-08-08 | 89.21 | 141.94 | -1.85 | ZS ahead |
| 2025-08-07 | 88.62 | 143.41 | -1.97 | ZS ahead |
| 2025-08-06 | 90.88 | 152.27 | -2.18 | ZS ahead |
| 2025-08-05 | 89.62 | 148.39 | -2.15 | ZS ahead |
| 2025-08-04 | 91.36 | 150.44 | -2.15 | ZS ahead |
| 2025-08-01 | 90.50 | 147.50 | -2.12 | ZS ahead |
| 2025-07-31 | 92.00 | 150.29 | -2.16 | ZS ahead |
| 2025-07-30 | 94.27 | 151.43 | -2.09 | ZS ahead |
| 2025-07-29 | 96.04 | 152.66 | -2.06 | ZS ahead |
| 2025-07-28 | 96.69 | 152.12 | -2.03 | ZS ahead |
| 2025-07-25 | 98.29 | 150.62 | -1.90 | ZS ahead |
| 2025-07-24 | 98.37 | 149.62 | -1.88 | ZS ahead |
| 2025-07-23 | 98.96 | 149.13 | -1.84 | ZS ahead |
| 2025-07-22 | 98.46 | 150.37 | -1.94 | ZS ahead |
| 2025-07-21 | 96.69 | 151.80 | -2.13 | ZS ahead |
| 2025-07-18 | 97.03 | 151.95 | -2.14 | ZS ahead |
| 2025-07-17 | 96.87 | 150.67 | -2.13 | ZS ahead |
| 2025-07-16 | 95.94 | 151.44 | -2.25 | ZS ahead |
| 2025-07-15 | 95.27 | 152.04 | -2.35 | ZS ahead |
| 2025-07-14 | 96.65 | 153.22 | -2.34 | ZS ahead |
| 2025-07-11 | 96.62 | 152.49 | -2.34 | ZS ahead |
| 2025-07-10 | 98.37 | 155.88 | -2.39 | ZS ahead |
| 2025-07-09 | 102.50 | 166.57 | -2.59 | ZS ahead |
| 2025-07-08 | 103.47 | 164.43 | -2.48 | ZS ahead |
| 2025-07-07 | 103.15 | 166.02 | -2.61 | ZS ahead |
| 2025-07-03 | 103.82 | 165.66 | -2.59 | ZS ahead |
| 2025-07-02 | 102.88 | 162.80 | -2.57 | ZS ahead |
| 2025-07-01 | 103.13 | 161.74 | -2.55 | ZS ahead |
| 2025-06-30 | 100.04 | 165.22 | -2.97 | ZS ahead |
| 2025-06-27 | 99.67 | 165.95 | -3.09 | ZS ahead |
| 2025-06-26 | 99.47 | 165.18 | -3.14 | ZS ahead |
| 2025-06-25 | 98.69 | 164.19 | -3.24 | ZS ahead |
| 2025-06-24 | 99.47 | 162.34 | -3.17 | ZS ahead |
| 2025-06-23 | 98.36 | 163.39 | -3.39 | ZS ahead |
| 2025-06-20 | 96.76 | 159.43 | -3.41 | ZS ahead |
| 2025-06-18 | 101.46 | 160.73 | -3.17 | ZS ahead |
| 2025-06-17 | 102.19 | 161.73 | -3.23 | ZS ahead |
| 2025-06-16 | 102.76 | 160.53 | -3.19 | ZS ahead |
| 2025-06-13 | 101.22 | 158.91 | -3.31 | ZS ahead |
| 2025-06-12 | 103.15 | 158.64 | -3.21 | ZS ahead |
| 2025-06-11 | 103.40 | 157.81 | -3.22 | ZS ahead |
| 2025-06-10 | 103.91 | 156.82 | -3.19 | ZS ahead |
| 2025-06-09 | 103.17 | 157.83 | -3.40 | ZS ahead |
| 2025-06-06 | 102.92 | 159.48 | -3.62 | ZS ahead |
| 2025-06-05 | 101.69 | 158.35 | -3.79 | ZS ahead |
| 2025-06-04 | 102.23 | 156.23 | -3.72 | ZS ahead |
| 2025-06-03 | 102.97 | 155.27 | -3.70 | ZS ahead |
| 2025-06-02 | 102.91 | 154.30 | -3.75 | ZS ahead |
| 2025-05-30 | 103.83 | 145.10 | -3.09 | ZS ahead |
| 2025-05-29 | 103.40 | 132.16 | -2.17 | ZS ahead |
| 2025-05-28 | 103.15 | 133.49 | -2.34 | ZS ahead |
| 2025-05-27 | 103.38 | 135.41 | -2.51 | ZS ahead |
| 2025-05-23 | 101.44 | 133.73 | -2.62 | ZS ahead |
| 2025-05-22 | 102.44 | 133.06 | -2.50 | ZS ahead |
| 2025-05-21 | 102.55 | 130.90 | -2.33 | ZS ahead |
| 2025-05-20 | 103.83 | 132.60 | -2.37 | ZS ahead |
| 2025-05-19 | 104.58 | 132.92 | -2.35 | ZS ahead |
| 2025-05-16 | 104.41 | 132.36 | -2.35 | ZS ahead |
| 2025-05-15 | 104.31 | 129.42 | -2.13 | ZS ahead |
| 2025-05-14 | 103.03 | 128.65 | -2.23 | ZS ahead |
| 2025-05-13 | 104.19 | 128.94 | -2.15 | ZS ahead |
| 2025-05-12 | 104.88 | 127.09 | -1.91 | ZS ahead |
| 2025-05-09 | 101.50 | 122.66 | -1.90 | ZS ahead |
| 2025-05-08 | 101.55 | 122.70 | -1.92 | ZS ahead |
| 2025-05-07 | 99.91 | 122.91 | -2.16 | ZS ahead |
| 2025-05-06 | 99.54 | 122.68 | -2.21 | ZS ahead |
| 2025-05-05 | 99.88 | 122.61 | -2.18 | ZS ahead |
| 2025-05-02 | 99.62 | 121.29 | -2.10 | ZS ahead |
| 2025-05-01 | 96.45 | 119.50 | -2.35 | ZS ahead |
| 2025-04-30 | 94.32 | 119.03 | -2.63 | ZS ahead |
| 2025-04-29 | 93.96 | 117.81 | -2.59 | ZS ahead |
| 2025-04-28 | 93.05 | 115.71 | -2.51 | ZS ahead |
| 2025-04-25 | 92.53 | 113.46 | -2.36 | ZS ahead |
| 2025-04-24 | 92.46 | 110.59 | -2.05 | ZS ahead |
| 2025-04-23 | 91.06 | 105.57 | -1.64 | ZS ahead |
| 2025-04-22 | 89.40 | 103.43 | -1.62 | ZS ahead |
| 2025-04-21 | 87.26 | 101.94 | -1.77 | ZS ahead |
| 2025-04-17 | 89.03 | 105.83 | -2.04 | ZS ahead |
| 2025-04-16 | 89.76 | 106.77 | -2.07 | ZS ahead |
| 2025-04-15 | 91.36 | 107.70 | -1.96 | ZS ahead |
| 2025-04-14 | 90.78 | 104.96 | -1.70 | ZS ahead |
| 2025-04-11 | 89.96 | 104.25 | -1.74 | ZS ahead |
| 2025-04-10 | 89.10 | 102.82 | -1.69 | ZS ahead |
| 2025-04-09 | 93.45 | 106.37 | -1.51 | ZS ahead |
| 2025-04-08 | 85.22 | 93.17 | -0.93 | ZS ahead |
| 2025-04-07 | 86.38 | 94.76 | -0.98 | ZS ahead |
| 2025-04-04 | 88.13 | 91.93 | -0.25 | near the usual relationship |
| 2025-04-03 | 93.94 | 101.16 | -0.71 | ZS ahead |
| 2025-04-02 | 98.37 | 108.96 | -1.12 | ZS ahead |
| 2025-04-01 | 98.01 | 105.82 | -0.75 | ZS ahead |
| 2025-03-31 | 98.08 | 104.43 | -0.55 | ZS ahead |
| 2025-03-28 | 97.31 | 109.02 | -1.29 | ZS ahead |
| 2025-03-27 | 99.46 | 110.23 | -1.13 | ZS ahead |
| 2025-03-26 | 99.81 | 111.34 | -1.22 | ZS ahead |
| 2025-03-25 | 101.05 | 113.54 | -1.33 | ZS ahead |
| 2025-03-24 | 99.92 | 110.45 | -1.10 | ZS ahead |
| 2025-03-21 | 97.97 | 107.99 | -1.06 | ZS ahead |
| 2025-03-20 | 98.99 | 107.13 | -0.79 | ZS ahead |
| 2025-03-19 | 102.13 | 107.34 | -0.37 | near the usual relationship |
| 2025-03-18 | 102.03 | 106.09 | -0.21 | near the usual relationship |
| 2025-03-17 | 102.59 | 106.65 | -0.21 | near the usual relationship |
| 2025-03-14 | 101.44 | 104.11 | -0.02 | near the usual relationship |
| 2025-03-13 | 100.44 | 99.77 | +0.46 | near the usual relationship |
| 2025-03-12 | 101.92 | 104.09 | +0.06 | near the usual relationship |
| 2025-03-11 | 105.73 | 104.92 | +0.48 | near the usual relationship |
| 2025-03-10 | 107.69 | 102.46 | +1.10 | CTSH ahead |
| 2025-03-07 | 106.71 | 109.87 | -0.04 | near the usual relationship |
| 2025-03-06 | 107.13 | 106.39 | +0.48 | near the usual relationship |
| 2025-03-05 | 108.06 | 103.39 | +1.03 | CTSH ahead |
| 2025-03-04 | 107.36 | 102.01 | +1.13 | CTSH ahead |
| 2025-03-03 | 107.06 | 99.36 | +1.47 | CTSH ahead |
| 2025-02-28 | 106.83 | 103.27 | +0.90 | CTSH ahead |
| 2025-02-27 | 107.68 | 101.06 | +1.31 | CTSH ahead |
| 2025-02-26 | 107.88 | 103.06 | +1.07 | CTSH ahead |
| 2025-02-25 | 108.77 | 101.59 | +1.39 | CTSH ahead |
| 2025-02-24 | 108.40 | 103.71 | +1.07 | CTSH ahead |
| 2025-02-21 | 108.81 | 104.50 | +1.01 | CTSH ahead |
| 2025-02-20 | 112.23 | 108.93 | +0.87 | CTSH ahead |
| 2025-02-19 | 113.37 | 112.98 | +0.53 | CTSH ahead |
| 2025-02-18 | 113.81 | 114.14 | +0.45 | near the usual relationship |
| 2025-02-14 | 116.28 | 111.94 | +0.97 | CTSH ahead |
| 2025-02-13 | 114.85 | 113.07 | +0.69 | CTSH ahead |
| 2025-02-12 | 112.92 | 111.12 | +0.70 | CTSH ahead |
| 2025-02-11 | 112.65 | 110.12 | +0.78 | CTSH ahead |
| 2025-02-10 | 111.49 | 111.85 | +0.49 | near the usual relationship |
| 2025-02-07 | 110.51 | 108.17 | +0.78 | CTSH ahead |
| 2025-02-06 | 111.65 | 107.48 | +0.97 | CTSH ahead |
| 2025-02-05 | 107.18 | 107.88 | +0.47 | near the usual relationship |
| 2025-02-04 | 107.10 | 107.22 | +0.54 | CTSH ahead |
| 2025-02-03 | 106.28 | 105.26 | +0.66 | CTSH ahead |
| 2025-01-31 | 105.91 | 106.62 | +0.49 | near the usual relationship |
| 2025-01-30 | 106.10 | 106.75 | +0.50 | CTSH ahead |
| 2025-01-29 | 104.09 | 106.12 | +0.36 | near the usual relationship |
| 2025-01-28 | 103.79 | 107.72 | +0.18 | near the usual relationship |
| 2025-01-27 | 104.00 | 100.65 | +0.94 | CTSH ahead |
| 2025-01-24 | 102.63 | 101.82 | +0.68 | CTSH ahead |
| 2025-01-23 | 102.15 | 101.42 | +0.67 | CTSH ahead |
| 2025-01-22 | 101.35 | 101.54 | +0.58 | CTSH ahead |
| 2025-01-21 | 100.58 | 100.95 | +0.57 | CTSH ahead |
| 2025-01-17 | 99.76 | 98.72 | +0.73 | CTSH ahead |
| 2025-01-16 | 99.27 | 98.71 | +0.68 | CTSH ahead |
| 2025-01-15 | 99.72 | 99.99 | +0.60 | CTSH ahead |
| 2025-01-14 | 98.94 | 97.20 | +0.82 | CTSH ahead |
| 2025-01-13 | 98.31 | 98.15 | +0.66 | CTSH ahead |
| 2025-01-10 | 96.56 | 99.98 | +0.29 | near the usual relationship |
| 2025-01-08 | 97.46 | 98.56 | +0.54 | CTSH ahead |
| 2025-01-07 | 96.95 | 96.78 | +0.67 | CTSH ahead |
| 2025-01-06 | 97.32 | 99.32 | +0.46 | near the usual relationship |
| 2025-01-03 | 97.92 | 97.81 | +0.68 | CTSH ahead |
| 2025-01-02 | 97.96 | 95.61 | +0.92 | CTSH ahead |
| 2024-12-31 | 98.59 | 94.95 | +1.06 | CTSH ahead |
| 2024-12-30 | 98.40 | 96.38 | +0.90 | CTSH ahead |
| 2024-12-27 | 101.54 | 97.13 | +1.15 | CTSH ahead |
| 2024-12-26 | 102.42 | 98.75 | +1.08 | CTSH ahead |
| 2024-12-24 | 101.91 | 98.55 | +1.05 | CTSH ahead |
| 2024-12-23 | 101.28 | 97.86 | +1.07 | CTSH ahead |
| 2024-12-20 | 101.58 | 98.62 | +1.03 | CTSH ahead |
| 2024-12-19 | 101.91 | 96.42 | +1.30 | CTSH ahead |
| 2024-12-18 | 100.33 | 97.73 | +1.02 | CTSH ahead |
| 2024-12-17 | 103.88 | 105.49 | +0.60 | CTSH ahead |
| 2024-12-16 | 103.46 | 107.58 | +0.37 | near the usual relationship |
| 2024-12-13 | 102.64 | 104.49 | +0.59 | CTSH ahead |
| 2024-12-12 | 103.04 | 108.60 | +0.25 | near the usual relationship |
| 2024-12-11 | 104.17 | 109.43 | +0.28 | near the usual relationship |
| 2024-12-10 | 102.64 | 105.99 | +0.46 | near the usual relationship |
| 2024-12-09 | 103.38 | 108.48 | +0.30 | near the usual relationship |
| 2024-12-06 | 104.03 | 111.57 | +0.09 | near the usual relationship |
| 2024-12-05 | 103.50 | 108.21 | +0.35 | near the usual relationship |
| 2024-12-04 | 103.31 | 108.60 | +0.30 | near the usual relationship |
| 2024-12-03 | 102.54 | 104.54 | +0.60 | CTSH ahead |
| 2024-12-02 | 103.62 | 109.74 | +0.23 | near the usual relationship |
| 2024-11-29 | 103.19 | 108.73 | +0.29 | near the usual relationship |
| 2024-11-27 | 103.53 | 107.87 | +0.40 | near the usual relationship |
| 2024-11-26 | 103.92 | 110.68 | +0.18 | near the usual relationship |
| 2024-11-25 | 103.37 | 110.74 | +0.13 | near the usual relationship |
| 2024-11-22 | 101.97 | 111.03 | -0.03 | near the usual relationship |
| 2024-11-21 | 101.10 | 109.10 | +0.06 | near the usual relationship |
| 2024-11-20 | 99.45 | 105.75 | +0.20 | near the usual relationship |
| 2024-11-19 | 97.85 | 107.55 | -0.12 | near the usual relationship |
| 2024-11-18 | 98.55 | 106.76 | +0.02 | near the usual relationship |
| 2024-11-15 | 98.86 | 106.03 | +0.12 | near the usual relationship |
| 2024-11-14 | 103.55 | 109.73 | +0.24 | near the usual relationship |
| 2024-11-13 | 105.54 | 110.44 | +0.37 | near the usual relationship |
| 2024-11-12 | 104.79 | 110.02 | +0.34 | near the usual relationship |
| 2024-11-11 | 104.49 | 105.02 | +0.78 | CTSH ahead |
| 2024-11-08 | 102.96 | 103.01 | +0.83 | CTSH ahead |
| 2024-11-07 | 104.31 | 103.53 | +0.91 | CTSH ahead |
| 2024-11-06 | 101.79 | 101.59 | +0.86 | CTSH ahead |
| 2024-11-05 | 96.65 | 98.37 | +0.66 | CTSH ahead |
| 2024-11-04 | 96.03 | 97.31 | +0.70 | CTSH ahead |
| 2024-11-01 | 95.65 | 96.09 | +0.79 | CTSH ahead |
| 2024-10-31 | 95.63 | 95.15 | +0.89 | CTSH ahead |
| 2024-10-30 | 95.32 | 98.30 | +0.53 | CTSH ahead |
| 2024-10-29 | 96.82 | 99.92 | +0.52 | CTSH ahead |
| 2024-10-28 | 96.13 | 98.42 | +0.60 | CTSH ahead |
| 2024-10-25 | 95.92 | 97.34 | +0.69 | CTSH ahead |
| 2024-10-24 | 95.97 | 96.80 | +0.75 | CTSH ahead |
| 2024-10-23 | 97.53 | 95.26 | +1.07 | CTSH ahead |
| 2024-10-22 | 97.21 | 97.97 | +0.76 | CTSH ahead |
| 2024-10-21 | 98.55 | 98.92 | +0.80 | CTSH ahead |
| 2024-10-18 | 100.00 | 100.00 | +0.84 | CTSH ahead |
One-day company-specific moves (4+ standard deviations, which block ideas for 10 sessions): Nov 26, 2025 (CTSH +0.8%, ZS -13.0%); Feb 27, 2026 (CTSH -0.8%, ZS -12.2%); May 27, 2026 (CTSH +2.6%, ZS -31.5%). Upcoming earnings: CTSH Oct 29, 2026 (pre-market).
Paired trades
The shared paper book and the replay, kept apart
Forward paper record
No paper position on this pair yet.
Historical simulation (a diagnostic, same rules)
No simulated trade through Oct 20, 2026: the pair rarely passed every test while 2 standard deviations apart.
Per $10,000 a leg. A replay on today's companies cannot prove an edge.
The companies
CTSH and ZS at a glance
CTSH Cognizant Technology Solutions Corporation
- Listing
- Nasdaq · SEC CIK 1058290
- Industry
- EDP Services · SIC 7371 Services-Computer Programming Services
- Market value
- $30.1B
- Price history
- 2,515 daily closes, Oct 20, 2016 to Oct 22, 2026
ZS Zscaler Inc.
- Listing
- Nasdaq · SEC CIK 1713683
- Industry
- EDP Services · SIC 7371 Services-Computer Programming Services
- Market value
- $34.7B
- Price history
- 2,163 daily closes, Mar 16, 2018 to Oct 22, 2026
Daily prices: Nasdaq.com. Filings and industry codes: SEC EDGAR. Earnings dates: Nasdaq earnings calendar.
Related
All pairs →Other rivals of CTSH and ZS
| Pair | Status | Ahead now | Industry |
|---|---|---|---|
| INFY / CTSH | Watchlist | CTSH by 2.06 sd | SIC 7371 Services-Computer Programming Services |
| INFY / ZS | Watchlist | ZS by 1.44 sd | SIC 7371 Services-Computer Programming Services |
Follow the research behind the paper book
Boostio is a research-first platform in private beta: crypto candidates, daily market stories, public paper trading and now rival stocks. Exploring these pages stays free and open.
Explore the private betaPaper only: hypothetical paired positions with modelled costs. No broker, no orders, no real money. A historical simulation is a diagnostic, not proof of an edge. Not investment advice.
