SIC 6199 Finance Services

American Express Company vs Strategy Inc Common Stock Class A

WatchlistAXP / MSTRPrices through Oct 22, 2026

Why these are rivals: #1 and #3 by market value ($214B vs $57B) with SEC SIC 6199 (Finance 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: 0.25 (needs >= 0.60)
Mean reversion: ADF t-statistic of the spread: -2.45 (needs <= -2.873 (5% critical value))

Business leadership

AXP is the larger business

Annual revenue reported to the SEC. Scale, not market share.

Year	AXP	MSTR	Larger
2025	$41.3B	$477M	AXP
2024	$38.8B	$463M	AXP
2023	$37.2B	$496M	AXP
2022	$34.2B	$499M	AXP
2021	$27.7B	$511M	AXP
2020	$22.0B	$481M	AXP

AXP led in every year with figures for both. Market value: AXP $213.7B, MSTR $57.4B.

Stock leadership

Neither is clearly ahead

Measured against the pair's own last 252 trading days.

The gap is 0.16 standard deviations, close to the usual relationship. 1 lead switch in the last year.

Price change	3 mo	6 mo	12 mo
AXP	-0.3%	+2.1%	-8.5%
MSTR	+59.0%	-15.5%	-51.7%

Relationship

Not a measured twin today

Only these tests can make a pair tradable on paper.

Pass: Aligned sessions: 2521 (needs >= 254)
Fail: Co-movement: daily return correlation, 252 sessions: 0.25 (needs >= 0.60)
Fail: Mean reversion: ADF t-statistic of the spread: -2.45 (needs <= -2.873 (5% critical value))
Pass: Speed: half-life of the spread, sessions: 21.71 (needs <= 63)
Data: Both stocks current

The twins over two years

Prices side by side, and the gap between them

AXP American Express Company MSTR Strategy Inc Common Stock Class APrice 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: AXP relative to MSTR, against the 252 sessions before each day. Above 0: AXP ahead; below 0: MSTR ahead. Lines at +/-2 (idea) and +/-4 (stop).

Data table (504 sessions)

Date	AXP index	MSTR index	z	Ahead
2026-10-22	117.48	67.54	-0.16	near the usual relationship
2026-10-21	116.92	71.10	-0.36	near the usual relationship
2026-10-20	115.01	66.12	-0.13	near the usual relationship
2026-10-19	114.31	63.01	+0.03	near the usual relationship
2026-10-16	113.30	63.39	-0.01	near the usual relationship
2026-10-15	113.40	70.09	-0.36	near the usual relationship
2026-10-14	110.90	66.36	-0.23	near the usual relationship
2026-10-13	111.94	70.50	-0.39	near the usual relationship
2026-10-12	112.55	70.73	-0.37	near the usual relationship
2026-10-09	111.34	71.50	-0.43	near the usual relationship
2026-10-08	111.31	70.17	-0.35	near the usual relationship
2026-10-07	109.92	71.05	-0.42	near the usual relationship
2026-10-06	110.03	76.23	-0.62	MSTR ahead
2026-10-05	109.84	76.17	-0.61	MSTR ahead
2026-10-02	109.39	74.13	-0.52	MSTR ahead
2026-10-01	109.14	74.35	-0.52	MSTR ahead
2026-09-30	109.87	70.92	-0.35	near the usual relationship
2026-09-29	110.34	71.65	-0.35	near the usual relationship
2026-09-28	110.67	72.80	-0.38	near the usual relationship
2026-09-25	111.60	73.48	-0.38	near the usual relationship
2026-09-24	110.43	74.87	-0.45	near the usual relationship
2026-09-23	109.09	75.14	-0.49	near the usual relationship
2026-09-22	110.22	77.52	-0.54	MSTR ahead
2026-09-21	113.30	78.06	-0.46	near the usual relationship
2026-09-18	112.56	71.31	-0.21	near the usual relationship
2026-09-17	112.42	61.27	+0.22	near the usual relationship
2026-09-16	112.88	58.45	+0.37	near the usual relationship
2026-09-15	117.21	60.04	+0.41	near the usual relationship
2026-09-14	118.42	63.44	+0.29	near the usual relationship
2026-09-11	117.31	60.67	+0.40	near the usual relationship
2026-09-10	115.87	59.56	+0.42	near the usual relationship
2026-09-09	116.26	61.48	+0.35	near the usual relationship
2026-09-08	117.81	63.24	+0.32	near the usual relationship
2026-09-04	117.84	66.15	+0.20	near the usual relationship
2026-09-03	119.16	67.09	+0.20	near the usual relationship
2026-09-02	119.22	57.07	+0.63	AXP ahead
2026-09-01	117.12	57.85	+0.56	AXP ahead
2026-08-31	119.29	61.59	+0.45	near the usual relationship
2026-08-28	120.38	58.98	+0.59	AXP ahead
2026-08-27	120.73	63.65	+0.41	near the usual relationship
2026-08-26	121.45	57.07	+0.71	AXP ahead
2026-08-25	121.37	58.76	+0.64	AXP ahead
2026-08-24	121.87	56.81	+0.74	AXP ahead
2026-08-21	121.39	55.24	+0.80	AXP ahead
2026-08-20	119.64	52.07	+0.92	AXP ahead
2026-08-19	122.80	48.30	+1.17	AXP ahead
2026-08-18	122.30	42.86	+1.45	AXP ahead
2026-08-17	121.47	45.25	+1.31	AXP ahead
2026-08-14	123.73	43.10	+1.48	AXP ahead
2026-08-13	124.16	44.98	+1.39	AXP ahead
2026-08-12	124.31	43.93	+1.46	AXP ahead
2026-08-11	123.13	44.51	+1.41	AXP ahead
2026-08-10	122.42	45.09	+1.37	AXP ahead
2026-08-07	123.17	46.33	+1.33	AXP ahead
2026-08-06	123.78	44.87	+1.42	AXP ahead
2026-08-05	126.08	45.57	+1.44	AXP ahead
2026-08-04	125.26	45.24	+1.45	AXP ahead
2026-08-03	124.54	43.95	+1.51	AXP ahead
2026-07-31	121.48	43.21	+1.50	AXP ahead
2026-07-30	121.94	45.28	+1.41	AXP ahead
2026-07-29	119.77	43.24	+1.48	AXP ahead
2026-07-28	121.62	44.55	+1.46	AXP ahead
2026-07-27	121.17	45.70	+1.40	AXP ahead
2026-07-24	117.84	42.47	+1.51	AXP ahead
2026-07-23	123.14	43.38	+1.57	AXP ahead
2026-07-22	125.99	46.33	+1.48	AXP ahead
2026-07-21	126.74	47.23	+1.46	AXP ahead
2026-07-20	127.15	45.32	+1.57	AXP ahead
2026-07-17	128.38	43.94	+1.67	AXP ahead
2026-07-16	130.63	43.56	+1.74	AXP ahead
2026-07-15	129.50	45.15	+1.65	AXP ahead
2026-07-14	128.28	45.21	+1.64	AXP ahead
2026-07-13	128.05	42.67	+1.77	AXP ahead
2026-07-10	126.66	43.84	+1.70	AXP ahead
2026-07-09	125.26	43.50	+1.71	AXP ahead
2026-07-08	121.53	43.49	+1.66	AXP ahead
2026-07-07	126.30	45.10	+1.68	AXP ahead
2026-07-06	128.63	46.68	+1.66	AXP ahead
2026-07-02	127.16	46.68	+1.65	AXP ahead
2026-07-01	125.73	43.26	+1.80	AXP ahead
2026-06-30	122.20	40.27	+1.92	AXP ahead
2026-06-29	123.15	42.94	+1.81	AXP ahead
2026-06-26	122.97	38.13	+2.09	AXP ahead
2026-06-25	123.73	39.53	+2.05	AXP ahead
2026-06-24	123.76	43.61	+1.85	AXP ahead
2026-06-23	122.03	48.11	+1.61	AXP ahead
2026-06-22	122.14	50.71	+1.51	AXP ahead
2026-06-18	122.11	52.13	+1.46	AXP ahead
2026-06-17	123.03	54.00	+1.41	AXP ahead
2026-06-16	123.10	56.89	+1.30	AXP ahead
2026-06-15	121.17	60.75	+1.13	AXP ahead
2026-06-12	117.58	57.43	+1.20	AXP ahead
2026-06-11	115.07	55.66	+1.23	AXP ahead
2026-06-10	113.20	53.44	+1.29	AXP ahead
2026-06-09	115.03	54.21	+1.30	AXP ahead
2026-06-08	112.83	58.93	+1.09	AXP ahead
2026-06-05	112.24	55.80	+1.20	AXP ahead
2026-06-04	112.91	59.93	+1.07	AXP ahead
2026-06-03	108.59	58.62	+1.04	AXP ahead
2026-06-02	112.35	63.04	+0.96	AXP ahead
2026-06-01	113.28	69.39	+0.78	AXP ahead
2026-05-29	114.34	73.70	+0.67	AXP ahead
2026-05-28	113.85	70.25	+0.77	AXP ahead
2026-05-27	112.92	71.44	+0.73	AXP ahead
2026-05-26	112.26	74.09	+0.64	AXP ahead
2026-05-22	112.64	74.07	+0.66	AXP ahead
2026-05-21	111.89	76.37	+0.58	AXP ahead
2026-05-20	111.93	76.81	+0.58	AXP ahead
2026-05-19	111.75	76.27	+0.59	AXP ahead
2026-05-18	112.81	77.19	+0.59	AXP ahead
2026-05-15	113.26	82.19	+0.48	near the usual relationship
2026-05-14	113.00	86.62	+0.37	near the usual relationship
2026-05-13	111.86	82.47	+0.45	near the usual relationship
2026-05-12	113.56	85.44	+0.42	near the usual relationship
2026-05-11	112.84	90.77	+0.28	near the usual relationship
2026-05-08	114.18	86.90	+0.40	near the usual relationship
2026-05-07	115.14	83.31	+0.51	AXP ahead
2026-05-06	116.30	86.55	+0.46	near the usual relationship
2026-05-05	114.15	86.58	+0.43	near the usual relationship
2026-05-04	115.33	85.15	+0.49	near the usual relationship
2026-05-01	115.50	82.08	+0.57	AXP ahead
2026-04-30	116.71	76.65	+0.74	AXP ahead
2026-04-29	114.04	73.28	+0.79	AXP ahead
2026-04-28	114.13	76.77	+0.71	AXP ahead
2026-04-27	115.19	78.38	+0.69	AXP ahead
2026-04-24	113.47	79.23	+0.64	AXP ahead
2026-04-23	115.09	79.90	+0.66	AXP ahead
2026-04-22	120.27	83.09	+0.68	AXP ahead
2026-04-21	119.15	75.96	+0.84	AXP ahead
2026-04-20	119.18	79.13	+0.77	AXP ahead
2026-04-17	119.83	77.14	+0.84	AXP ahead
2026-04-16	117.69	69.00	+1.03	AXP ahead
2026-04-15	118.88	66.50	+1.14	AXP ahead
2026-04-14	118.13	63.66	+1.22	AXP ahead
2026-04-13	116.99	61.32	+1.29	AXP ahead
2026-04-10	113.26	59.59	+1.29	AXP ahead
2026-04-09	114.81	59.70	+1.33	AXP ahead
2026-04-08	114.29	59.44	+1.34	AXP ahead
2026-04-07	110.93	57.31	+1.36	AXP ahead
2026-04-06	110.46	59.15	+1.30	AXP ahead
2026-04-02	108.45	55.51	+1.40	AXP ahead
2026-04-01	108.91	56.88	+1.37	AXP ahead
2026-03-31	109.28	57.82	+1.36	AXP ahead
2026-03-30	107.48	56.26	+1.39	AXP ahead
2026-03-27	105.59	58.39	+1.29	AXP ahead
2026-03-26	108.17	61.58	+1.24	AXP ahead
2026-03-25	108.47	64.45	+1.16	AXP ahead
2026-03-24	109.11	63.12	+1.23	AXP ahead
2026-03-23	109.08	64.02	+1.21	AXP ahead
2026-03-20	106.76	62.85	+1.21	AXP ahead
2026-03-19	106.55	64.04	+1.18	AXP ahead
2026-03-18	106.36	65.12	+1.15	AXP ahead
2026-03-17	108.48	69.62	+1.06	AXP ahead
2026-03-16	107.74	68.34	+1.09	AXP ahead
2026-03-13	108.37	64.70	+1.23	AXP ahead
2026-03-12	109.07	63.62	+1.29	AXP ahead
2026-03-11	110.55	64.08	+1.31	AXP ahead
2026-03-10	109.52	64.14	+1.30	AXP ahead
2026-03-09	110.33	64.37	+1.32	AXP ahead
2026-03-06	108.75	61.86	+1.38	AXP ahead
2026-03-05	110.99	64.77	+1.34	AXP ahead
2026-03-04	112.44	67.84	+1.28	AXP ahead
2026-03-03	111.21	61.47	+1.48	AXP ahead
2026-03-02	111.07	63.77	+1.41	AXP ahead
2026-02-27	111.60	59.99	+1.56	AXP ahead
2026-02-26	121.15	61.80	+1.70	AXP ahead
2026-02-25	118.17	62.84	+1.62	AXP ahead
2026-02-24	115.78	57.73	+1.78	AXP ahead
2026-02-23	116.06	57.31	+1.82	AXP ahead
2026-02-20	125.07	60.71	+1.88	AXP ahead
2026-02-19	123.79	59.97	+1.91	AXP ahead
2026-02-18	125.09	58.00	+2.03	AXP ahead
2026-02-17	124.47	59.61	+1.98	AXP ahead
2026-02-13	121.93	62.02	+1.87	AXP ahead
2026-02-12	123.88	56.98	+2.13	AXP ahead
2026-02-11	127.90	58.40	+2.17	AXP ahead
2026-02-10	131.22	61.61	+2.14	AXP ahead
2026-02-09	129.94	64.13	+2.04	AXP ahead
2026-02-06	129.76	62.51	+2.13	AXP ahead
2026-02-05	128.12	49.56	+2.71	AXP ahead
2026-02-04	127.78	59.80	+2.27	AXP ahead
2026-02-03	126.32	61.73	+2.20	AXP ahead
2026-02-02	127.47	64.69	+2.13	AXP ahead
2026-01-30	127.23	69.36	+1.98	AXP ahead
2026-01-29	129.52	66.33	+2.16	AXP ahead
2026-01-28	128.98	73.40	+1.92	AXP ahead
2026-01-27	129.86	74.85	+1.91	AXP ahead
2026-01-26	131.24	74.39	+1.97	AXP ahead
2026-01-23	130.67	75.56	+1.94	AXP ahead
2026-01-22	132.96	74.58	+2.05	AXP ahead
2026-01-21	129.92	75.89	+1.97	AXP ahead
2026-01-20	127.24	74.23	+1.99	AXP ahead
2026-01-16	131.79	80.47	+1.89	AXP ahead
2026-01-15	129.11	79.18	+1.90	AXP ahead
2026-01-14	129.43	83.08	+1.80	AXP ahead
2026-01-13	129.34	80.14	+1.92	AXP ahead
2026-01-12	129.91	75.16	+2.14	AXP ahead
2026-01-09	135.70	72.89	+2.38	AXP ahead
2026-01-08	138.36	77.35	+2.30	AXP ahead
2026-01-07	136.65	74.97	+2.39	AXP ahead
2026-01-06	138.57	73.18	+2.54	AXP ahead
2026-01-05	137.22	76.31	+2.43	AXP ahead
2026-01-02	134.66	72.81	+2.55	AXP ahead
2025-12-31	133.66	70.39	+2.68	AXP ahead
2025-12-30	134.90	72.09	+2.68	AXP ahead
2025-12-29	135.60	71.99	+2.76	AXP ahead
2025-12-26	137.67	73.57	+2.79	AXP ahead
2025-12-24	138.41	73.52	+2.87	AXP ahead
2025-12-23	138.08	73.14	+2.94	AXP ahead
2025-12-22	137.60	76.12	+2.85	AXP ahead
2025-12-19	136.03	76.36	+2.86	AXP ahead
2025-12-18	135.67	73.31	+3.05	AXP ahead
2025-12-17	135.70	74.30	+3.07	AXP ahead
2025-12-16	137.56	77.60	+3.04	AXP ahead
2025-12-15	138.22	75.09	+3.24	AXP ahead
2025-12-12	138.21	81.74	+3.00	AXP ahead
2025-12-11	139.05	84.92	+2.95	AXP ahead
2025-12-10	135.69	85.54	+2.89	AXP ahead
2025-12-09	131.48	87.55	+2.73	AXP ahead
2025-12-08	130.89	85.10	+2.88	AXP ahead
2025-12-05	133.80	82.92	+3.14	AXP ahead
2025-12-04	134.09	86.17	+3.06	AXP ahead
2025-12-03	133.00	87.27	+3.04	AXP ahead
2025-12-02	130.32	84.00	+3.19	AXP ahead
2025-12-01	130.17	79.41	+3.52	AXP ahead
2025-11-28	131.97	82.08	+3.53	AXP ahead
2025-11-26	131.50	81.37	+3.66	AXP ahead
2025-11-25	131.02	79.77	+3.85	AXP ahead
2025-11-24	128.59	82.94	+3.68	AXP ahead
2025-11-21	127.49	78.99	+3.99	AXP ahead
2025-11-20	124.21	82.06	+3.80	AXP ahead
2025-11-19	124.51	86.40	+3.67	AXP ahead
2025-11-18	123.08	95.80	+3.16	AXP ahead
2025-11-17	123.29	90.53	+3.56	AXP ahead
2025-11-14	129.04	92.54	+3.81	AXP ahead
2025-11-13	131.77	96.61	+3.81	AXP ahead
2025-11-12	134.68	104.05	+3.61	AXP ahead
2025-11-11	133.73	107.18	+3.48	AXP ahead
2025-11-10	132.91	110.66	+3.32	AXP ahead
2025-11-07	133.15	112.08	+3.31	AXP ahead
2025-11-06	132.13	109.89	+3.44	AXP ahead
2025-11-05	132.16	118.13	+3.03	AXP ahead
2025-11-04	130.24	114.42	+3.20	AXP ahead
2025-11-03	130.65	122.61	+2.82	AXP ahead
2025-10-31	130.33	124.85	+2.73	AXP ahead
2025-10-30	129.66	117.93	+3.12	AXP ahead
2025-10-29	129.42	127.56	+2.62	AXP ahead
2025-10-28	130.43	131.86	+2.47	AXP ahead
2025-10-27	130.67	136.95	+2.22	AXP ahead
2025-10-24	129.18	133.92	+2.29	AXP ahead
2025-10-23	128.23	131.99	+2.34	AXP ahead
2025-10-22	127.17	130.09	+2.38	AXP ahead
2025-10-21	128.34	139.86	+1.93	AXP ahead
2025-10-20	126.26	137.41	+1.90	AXP ahead
2025-10-17	125.23	134.29	+1.97	AXP ahead
2025-10-16	116.74	131.49	+1.64	AXP ahead
2025-10-15	119.46	137.48	+1.49	AXP ahead
2025-10-14	120.25	139.29	+1.42	AXP ahead
2025-10-13	116.74	146.15	+0.92	AXP ahead
2025-10-10	114.26	141.20	+0.98	AXP ahead
2025-10-09	117.22	148.38	+0.81	AXP ahead
2025-10-08	116.99	153.25	+0.59	AXP ahead
2025-10-07	118.49	152.14	+0.67	AXP ahead
2025-10-06	119.94	166.63	+0.22	near the usual relationship
2025-10-03	119.31	162.90	+0.29	near the usual relationship
2025-10-02	119.40	163.22	+0.27	near the usual relationship
2025-10-01	118.70	156.77	+0.43	near the usual relationship
2025-09-30	120.00	149.27	+0.72	AXP ahead
2025-09-29	123.67	151.22	+0.78	AXP ahead
2025-09-26	123.44	143.18	+1.01	AXP ahead
2025-09-25	122.90	139.30	+1.10	AXP ahead
2025-09-24	123.01	149.78	+0.73	AXP ahead
2025-09-23	123.37	151.85	+0.65	AXP ahead
2025-09-22	123.19	155.62	+0.51	AXP ahead
2025-09-19	123.24	159.71	+0.37	near the usual relationship
2025-09-18	123.44	161.73	+0.31	near the usual relationship
2025-09-17	121.39	152.74	+0.46	near the usual relationship
2025-09-16	118.15	155.23	+0.26	near the usual relationship
2025-09-15	118.23	151.85	+0.34	near the usual relationship
2025-09-12	117.53	153.54	+0.26	near the usual relationship
2025-09-11	118.98	151.03	+0.35	near the usual relationship
2025-09-10	116.82	151.23	+0.26	near the usual relationship
2025-09-09	117.18	152.20	+0.23	near the usual relationship
2025-09-08	117.57	152.83	+0.21	near the usual relationship
2025-09-05	117.86	155.60	+0.14	near the usual relationship
2025-09-04	119.46	151.76	+0.27	near the usual relationship
2025-09-03	116.95	153.00	+0.15	near the usual relationship
2025-09-02	119.65	158.26	+0.10	near the usual relationship
2025-08-29	119.69	154.92	+0.17	near the usual relationship
2025-08-28	118.14	156.97	+0.07	near the usual relationship
2025-08-27	116.50	158.46	-0.02	near the usual relationship
2025-08-26	115.83	162.77	-0.14	near the usual relationship
2025-08-25	114.09	158.99	-0.12	near the usual relationship
2025-08-22	115.31	165.91	-0.23	near the usual relationship
2025-08-21	111.34	156.39	-0.16	near the usual relationship
2025-08-20	111.42	159.53	-0.23	near the usual relationship
2025-08-19	110.59	155.92	-0.19	near the usual relationship
2025-08-18	110.93	168.44	-0.43	near the usual relationship
2025-08-15	110.36	169.70	-0.48	near the usual relationship
2025-08-14	111.18	172.77	-0.52	MSTR ahead
2025-08-13	110.87	180.63	-0.67	MSTR ahead
2025-08-12	109.55	182.71	-0.75	MSTR ahead
2025-08-11	107.02	185.42	-0.87	MSTR ahead
2025-08-08	107.46	183.05	-0.83	MSTR ahead
2025-08-07	106.48	186.24	-0.92	MSTR ahead
2025-08-06	106.77	177.62	-0.77	MSTR ahead
2025-08-05	107.17	173.94	-0.70	MSTR ahead
2025-08-04	107.88	180.32	-0.80	MSTR ahead
2025-08-01	106.32	169.85	-0.67	MSTR ahead
2025-07-31	108.14	186.17	-0.90	MSTR ahead
2025-07-30	109.62	183.01	-0.81	MSTR ahead
2025-07-29	111.47	182.83	-0.77	MSTR ahead
2025-07-28	112.27	187.07	-0.82	MSTR ahead
2025-07-25	112.58	188.03	-0.83	MSTR ahead
2025-07-24	111.37	192.22	-0.94	MSTR ahead
2025-07-23	111.51	191.17	-0.93	MSTR ahead
2025-07-22	109.88	197.54	-1.08	MSTR ahead
2025-07-21	109.46	197.48	-1.10	MSTR ahead
2025-07-18	111.26	196.06	-1.03	MSTR ahead
2025-07-17	113.93	209.09	-1.17	MSTR ahead
2025-07-16	112.68	211.20	-1.24	MSTR ahead
2025-07-15	112.23	204.91	-1.17	MSTR ahead
2025-07-14	115.94	208.94	-1.14	MSTR ahead
2025-07-11	115.42	201.32	-1.05	MSTR ahead
2025-07-10	117.50	195.38	-0.91	MSTR ahead
2025-07-09	114.65	192.44	-0.95	MSTR ahead
2025-07-08	114.52	183.89	-0.82	MSTR ahead
2025-07-07	116.60	183.30	-0.77	MSTR ahead
2025-07-03	118.55	187.15	-0.79	MSTR ahead
2025-07-02	117.64	186.36	-0.80	MSTR ahead
2025-07-01	116.53	172.94	-0.62	MSTR ahead
2025-06-30	115.24	187.26	-0.89	MSTR ahead
2025-06-27	114.60	177.84	-0.76	MSTR ahead
2025-06-26	112.51	179.02	-0.84	MSTR ahead
2025-06-25	111.49	180.06	-0.89	MSTR ahead
2025-06-24	111.41	174.66	-0.81	MSTR ahead
2025-06-23	108.25	170.10	-0.82	MSTR ahead
2025-06-20	107.88	171.27	-0.86	MSTR ahead
2025-06-18	107.09	170.96	-0.88	MSTR ahead
2025-06-17	105.79	173.81	-0.98	MSTR ahead
2025-06-16	106.30	177.08	-1.02	MSTR ahead
2025-06-13	103.97	177.37	-1.10	MSTR ahead
2025-06-12	107.66	175.93	-0.98	MSTR ahead
2025-06-11	108.06	179.33	-1.04	MSTR ahead
2025-06-10	108.21	181.22	-1.07	MSTR ahead
2025-06-09	108.95	181.65	-1.07	MSTR ahead
2025-06-06	109.28	173.48	-0.93	MSTR ahead
2025-06-05	106.93	170.85	-0.96	MSTR ahead
2025-06-04	106.91	175.16	-1.04	MSTR ahead
2025-06-03	107.44	179.48	-1.10	MSTR ahead
2025-06-02	106.70	172.46	-1.02	MSTR ahead
2025-05-30	106.24	170.97	-1.01	MSTR ahead
2025-05-29	106.72	171.70	-1.02	MSTR ahead
2025-05-28	105.99	168.74	-1.00	MSTR ahead
2025-05-27	106.13	172.43	-1.06	MSTR ahead
2025-05-23	103.05	171.18	-1.14	MSTR ahead
2025-05-22	103.75	185.06	-1.36	MSTR ahead
2025-05-21	103.33	186.55	-1.40	MSTR ahead
2025-05-20	107.00	193.14	-1.42	MSTR ahead
2025-05-19	108.13	191.52	-1.37	MSTR ahead
2025-05-16	108.28	185.21	-1.28	MSTR ahead
2025-05-15	108.22	183.93	-1.27	MSTR ahead
2025-05-14	108.42	193.06	-1.42	MSTR ahead
2025-05-13	109.22	195.32	-1.44	MSTR ahead
2025-05-12	108.00	187.58	-1.37	MSTR ahead
2025-05-09	102.79	192.73	-1.60	MSTR ahead
2025-05-08	102.48	191.97	-1.62	MSTR ahead
2025-05-07	99.80	181.82	-1.55	MSTR ahead
2025-05-06	99.49	178.63	-1.52	MSTR ahead
2025-05-05	100.45	179.07	-1.50	MSTR ahead
2025-05-02	100.02	182.70	-1.59	MSTR ahead
2025-05-01	97.02	176.78	-1.59	MSTR ahead
2025-04-30	96.25	176.09	-1.62	MSTR ahead
2025-04-29	96.47	176.71	-1.64	MSTR ahead
2025-04-28	95.72	171.06	-1.58	MSTR ahead
2025-04-25	95.67	170.81	-1.59	MSTR ahead
2025-04-24	96.58	162.30	-1.42	MSTR ahead
2025-04-23	93.98	160.16	-1.48	MSTR ahead
2025-04-22	91.20	158.91	-1.56	MSTR ahead
2025-04-21	87.62	147.21	-1.46	MSTR ahead
2025-04-17	90.79	146.95	-1.36	MSTR ahead
2025-04-16	91.38	144.38	-1.30	MSTR ahead
2025-04-15	93.16	143.95	-1.24	MSTR ahead
2025-04-14	92.26	144.28	-1.29	MSTR ahead
2025-04-11	90.73	138.97	-1.24	MSTR ahead
2025-04-10	89.20	126.17	-1.00	MSTR ahead
2025-04-09	94.79	137.52	-1.09	MSTR ahead
2025-04-08	83.60	110.23	-0.81	MSTR ahead
2025-04-07	84.64	124.22	-1.14	MSTR ahead
2025-04-04	84.43	136.02	-1.44	MSTR ahead
2025-04-03	89.53	130.77	-1.14	MSTR ahead
2025-04-02	99.44	144.79	-1.14	MSTR ahead
2025-04-01	97.72	141.77	-1.14	MSTR ahead
2025-03-31	97.20	133.54	-0.98	MSTR ahead
2025-03-28	95.91	134.07	-1.04	MSTR ahead
2025-03-27	98.28	150.37	-1.32	MSTR ahead
2025-03-26	99.71	152.56	-1.34	MSTR ahead
2025-03-25	100.90	158.35	-1.43	MSTR ahead
2025-03-24	100.39	155.53	-1.40	MSTR ahead
2025-03-21	97.73	140.83	-1.18	MSTR ahead
2025-03-20	97.85	139.94	-1.17	MSTR ahead
2025-03-19	97.78	140.94	-1.20	MSTR ahead
2025-03-18	94.92	131.19	-1.07	MSTR ahead
2025-03-17	95.52	136.32	-1.18	MSTR ahead
2025-03-14	95.97	137.82	-1.21	MSTR ahead
2025-03-13	92.64	121.96	-0.94	MSTR ahead
2025-03-12	94.20	121.63	-0.88	MSTR ahead
2025-03-11	92.27	120.72	-0.93	MSTR ahead
2025-03-10	94.41	110.84	-0.59	MSTR ahead
2025-03-07	98.71	133.04	-1.04	MSTR ahead
2025-03-06	99.58	140.88	-1.21	MSTR ahead
2025-03-05	102.67	142.94	-1.16	MSTR ahead
2025-03-04	102.41	127.47	-0.81	MSTR ahead
2025-03-03	106.76	116.24	-0.40	near the usual relationship
2025-02-28	108.73	118.33	-0.40	near the usual relationship
2025-02-27	106.29	111.21	-0.28	near the usual relationship
2025-02-26	106.98	121.96	-0.56	MSTR ahead
2025-02-25	105.98	116.05	-0.44	near the usual relationship
2025-02-24	106.77	130.99	-0.79	MSTR ahead
2025-02-21	106.72	138.84	-0.97	MSTR ahead
2025-02-20	109.78	150.06	-1.12	MSTR ahead
2025-02-19	111.97	147.63	-1.02	MSTR ahead
2025-02-18	113.03	154.72	-1.13	MSTR ahead
2025-02-14	112.37	156.46	-1.19	MSTR ahead
2025-02-13	111.10	150.52	-1.11	MSTR ahead
2025-02-12	110.70	151.40	-1.14	MSTR ahead
2025-02-11	111.84	147.99	-1.05	MSTR ahead
2025-02-10	112.09	155.02	-1.18	MSTR ahead
2025-02-07	114.44	151.75	-1.06	MSTR ahead
2025-02-06	115.67	150.77	-1.01	MSTR ahead
2025-02-05	115.80	155.98	-1.10	MSTR ahead
2025-02-04	114.10	161.36	-1.23	MSTR ahead
2025-02-03	114.36	160.79	-1.22	MSTR ahead
2025-01-31	114.69	155.10	-1.12	MSTR ahead
2025-01-30	115.23	157.55	-1.15	MSTR ahead
2025-01-29	113.90	158.09	-1.19	MSTR ahead
2025-01-28	114.54	155.62	-1.14	MSTR ahead
2025-01-27	114.32	161.18	-1.24	MSTR ahead
2025-01-24	116.10	163.84	-1.24	MSTR ahead
2025-01-23	117.73	172.85	-1.35	MSTR ahead
2025-01-22	116.42	174.79	-1.41	MSTR ahead
2025-01-21	114.87	180.26	-1.52	MSTR ahead
2025-01-17	112.92	183.68	-1.62	MSTR ahead
2025-01-16	112.53	170.02	-1.45	MSTR ahead
2025-01-15	112.84	167.06	-1.41	MSTR ahead
2025-01-14	108.52	158.51	-1.38	MSTR ahead
2025-01-13	107.31	152.14	-1.32	MSTR ahead
2025-01-10	105.96	151.91	-1.36	MSTR ahead
2025-01-08	109.42	153.66	-1.32	MSTR ahead
2025-01-07	109.12	158.17	-1.40	MSTR ahead
2025-01-06	109.06	175.62	-1.66	MSTR ahead
2025-01-03	109.50	157.35	-1.41	MSTR ahead
2025-01-02	107.82	138.98	-1.16	MSTR ahead
2024-12-31	107.23	134.17	-1.10	MSTR ahead
2024-12-30	107.42	140.35	-1.21	MSTR ahead
2024-12-27	108.76	152.88	-1.39	MSTR ahead
2024-12-26	109.83	158.00	-1.46	MSTR ahead
2024-12-24	109.64	165.93	-1.59	MSTR ahead
2024-12-23	107.95	153.91	-1.46	MSTR ahead
2024-12-20	107.90	168.72	-1.70	MSTR ahead
2024-12-19	105.89	151.24	-1.49	MSTR ahead
2024-12-18	103.97	161.98	-1.71	MSTR ahead
2024-12-17	108.87	179.01	-1.86	MSTR ahead
2024-12-16	109.68	189.24	-1.99	MSTR ahead
2024-12-13	109.16	189.32	-2.03	MSTR ahead
2024-12-12	108.49	181.69	-1.97	MSTR ahead
2024-12-11	109.23	190.59	-2.09	MSTR ahead
2024-12-10	109.15	174.80	-1.90	MSTR ahead
2024-12-09	107.20	169.25	-1.89	MSTR ahead
2024-12-06	109.83	182.99	-2.04	MSTR ahead
2024-12-05	108.58	179.00	-2.04	MSTR ahead
2024-12-04	109.32	188.08	-2.17	MSTR ahead
2024-12-03	109.15	173.00	-1.99	MSTR ahead
2024-12-02	109.20	176.18	-2.05	MSTR ahead
2024-11-29	110.08	179.50	-2.10	MSTR ahead
2024-11-27	109.92	180.14	-2.14	MSTR ahead
2024-11-26	110.40	163.85	-1.91	MSTR ahead
2024-11-25	110.27	186.90	-2.28	MSTR ahead
2024-11-22	108.86	195.44	-2.46	MSTR ahead
2024-11-21	105.86	184.05	-2.41	MSTR ahead
2024-11-20	103.95	219.51	-2.96	MSTR ahead
2024-11-19	103.16	199.45	-2.78	MSTR ahead
2024-11-18	103.16	178.26	-2.52	MSTR ahead
2024-11-15	103.64	157.81	-2.21	MSTR ahead
2024-11-14	104.16	151.80	-2.12	MSTR ahead
2024-11-13	103.92	152.13	-2.16	MSTR ahead
2024-11-12	104.23	165.20	-2.41	MSTR ahead
2024-11-11	105.85	157.51	-2.26	MSTR ahead
2024-11-08	103.91	125.28	-1.70	MSTR ahead
2024-11-07	103.62	125.46	-1.73	MSTR ahead
2024-11-06	106.64	119.43	-1.53	MSTR ahead
2024-11-05	99.69	105.53	-1.39	MSTR ahead
2024-11-04	97.62	103.30	-1.40	MSTR ahead
2024-11-01	98.52	106.42	-1.46	MSTR ahead
2024-10-31	97.58	113.27	-1.68	MSTR ahead
2024-10-30	99.02	114.57	-1.68	MSTR ahead
2024-10-29	97.70	119.63	-1.86	MSTR ahead
2024-10-28	98.08	118.29	-1.83	MSTR ahead
2024-10-25	96.59	108.56	-1.65	MSTR ahead
2024-10-24	97.54	109.28	-1.66	MSTR ahead
2024-10-23	97.99	99.12	-1.38	MSTR ahead
2024-10-22	98.41	101.78	-1.45	MSTR ahead
2024-10-21	97.81	101.48	-1.47	MSTR ahead
2024-10-18	100.00	100.00	-1.37	MSTR ahead

One-day company-specific moves (4+ standard deviations, which block ideas for 10 sessions): Feb 5, 2026 (AXP +0.3%, MSTR -17.1%); Feb 6, 2026 (AXP +1.3%, MSTR +26.1%). Upcoming earnings: AXP Oct 23, 2026 (pre-market); MSTR Oct 29, 2026 (after-hours).

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

AXP and MSTR at a glance

AXP American Express Company

Listing: NYSE · SEC CIK 4962
Industry: Finance: Consumer Services · SIC 6199 Finance Services
Market value: $213.7B
Price history: 2,521 daily closes, Oct 12, 2016 to Oct 22, 2026

MSTR Strategy Inc Common Stock Class A

Listing: Nasdaq · SEC CIK 1050446
Industry: Computer Software: Prepackaged Software · SIC 6199 Finance Services
Market value: $57.4B
Price history: 2,521 daily closes, Oct 12, 2016 to Oct 22, 2026

Daily prices: Nasdaq.com. Filings and industry codes: SEC EDGAR. Earnings dates: Nasdaq earnings calendar.

All pairs →

Pair	Status	Ahead now	Industry
AXP / NU	Watchlist	neither	SIC 6199 Finance Services
NU / MSTR	Watchlist	neither	SIC 6199 Finance Services

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Paper 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.