SIC 3812 Search, Detection, Navigation, Guidance, Aeronautical Sys

L3Harris Technologies Inc. vs Northrop Grumman Corporation

WatchlistLHX / NOCPrices through Oct 22, 2026

Why these are rivals: #1 and #3 by market value ($73B vs $45B) with SEC SIC 3812 (Search, Detection, Navigation, Guidance, Aeronautical Sys).

Rivals, but right now the price gap does not have a measured habit of closing, so there is no paper idea, whatever the gap.

Mean reversion: ADF t-statistic of the spread: -1.69 (needs <= -2.873 (5% critical value))

Business leadership

NOC is the larger business

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

Year	LHX	NOC	Larger
2025	-	$42.0B	-
2024	$21.3B	$41.0B	NOC
2023	$19.4B	$39.3B	NOC
2022	$17.1B	$36.6B	NOC
2021	$17.8B	$35.7B	NOC
2020	$18.2B	$36.8B	NOC

NOC led in every year with figures for both. Market value: LHX $45.4B, NOC $72.5B.

Stock leadership

NOC is ahead now

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

NOC leads LHX by 1.93 standard deviations: +11.8% over its usual price ratio. 1 lead switch in the last year.

Price change	3 mo	6 mo	12 mo
LHX	-15.3%	-23.0%	-13.0%
NOC	+1.9%	-6.0%	-7.8%

Relationship

Not a measured twin today

Only these tests can make a pair tradable on paper.

Pass: Aligned sessions: 2521 (needs >= 254)
Pass: Co-movement: daily return correlation, 252 sessions: 0.65 (needs >= 0.60)
Fail: Mean reversion: ADF t-statistic of the spread: -1.69 (needs <= -2.873 (5% critical value))
Pass: Speed: half-life of the spread, sessions: 25.37 (needs <= 63)
Data: Both stocks current

The twins over two years

Prices side by side, and the gap between them

LHX L3Harris Technologies Inc. NOC Northrop Grumman CorporationPrice 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: LHX relative to NOC, against the 252 sessions before each day. Above 0: LHX ahead; below 0: NOC ahead. Lines at +/-2 (idea) and +/-4 (stop).

Data table (504 sessions)

Date	LHX index	NOC index	z	Ahead
2026-10-22	102.19	104.06	-1.93	NOC ahead
2026-10-21	99.51	101.61	-1.99	NOC ahead
2026-10-20	100.00	100.60	-1.74	NOC ahead
2026-10-19	98.01	96.21	-1.31	NOC ahead
2026-10-16	99.89	97.94	-1.29	NOC ahead
2026-10-15	96.67	94.13	-1.17	NOC ahead
2026-10-14	95.47	93.39	-1.25	NOC ahead
2026-10-13	94.35	90.69	-0.94	NOC ahead
2026-10-12	95.77	91.37	-0.80	NOC ahead
2026-10-09	95.25	90.57	-0.74	NOC ahead
2026-10-08	95.23	91.28	-0.88	NOC ahead
2026-10-07	93.91	89.20	-0.72	NOC ahead
2026-10-06	95.63	91.02	-0.75	NOC ahead
2026-10-05	95.22	89.70	-0.58	NOC ahead
2026-10-02	95.10	90.05	-0.67	NOC ahead
2026-10-01	95.83	90.81	-0.68	NOC ahead
2026-09-30	95.18	91.09	-0.85	NOC ahead
2026-09-29	95.05	95.07	-1.62	NOC ahead
2026-09-28	95.55	95.29	-1.58	NOC ahead
2026-09-25	95.54	96.18	-1.75	NOC ahead
2026-09-24	95.68	95.89	-1.68	NOC ahead
2026-09-23	96.15	96.92	-1.80	NOC ahead
2026-09-22	96.43	96.06	-1.60	NOC ahead
2026-09-21	99.26	99.22	-1.67	NOC ahead
2026-09-18	99.40	99.36	-1.68	NOC ahead
2026-09-17	100.68	98.72	-1.34	NOC ahead
2026-09-16	100.79	100.00	-1.56	NOC ahead
2026-09-15	100.35	100.09	-1.66	NOC ahead
2026-09-14	100.06	99.36	-1.59	NOC ahead
2026-09-11	98.70	97.77	-1.55	NOC ahead
2026-09-10	99.84	97.77	-1.34	NOC ahead
2026-09-09	100.66	97.13	-1.07	NOC ahead
2026-09-08	102.80	97.70	-0.79	NOC ahead
2026-09-04	103.08	97.02	-0.61	NOC ahead
2026-09-03	105.37	99.52	-0.66	NOC ahead
2026-09-02	105.04	98.69	-0.56	NOC ahead
2026-09-01	105.94	100.40	-0.71	NOC ahead
2026-08-31	107.02	101.68	-0.75	NOC ahead
2026-08-28	105.64	102.78	-1.16	NOC ahead
2026-08-27	105.31	102.70	-1.19	NOC ahead
2026-08-26	105.70	103.61	-1.28	NOC ahead
2026-08-25	105.38	102.21	-1.09	NOC ahead
2026-08-24	105.65	103.48	-1.25	NOC ahead
2026-08-21	107.22	103.81	-1.05	NOC ahead
2026-08-20	108.71	106.23	-1.20	NOC ahead
2026-08-19	111.39	109.81	-1.34	NOC ahead
2026-08-18	112.36	110.99	-1.37	NOC ahead
2026-08-17	111.90	107.42	-0.88	NOC ahead
2026-08-14	117.30	110.38	-0.54	NOC ahead
2026-08-13	115.95	108.28	-0.40	near the usual relationship
2026-08-12	116.87	108.77	-0.34	near the usual relationship
2026-08-11	114.97	108.46	-0.55	NOC ahead
2026-08-10	116.46	108.87	-0.40	near the usual relationship
2026-08-07	115.23	107.68	-0.39	near the usual relationship
2026-08-06	116.38	106.96	-0.11	near the usual relationship
2026-08-05	115.01	105.03	+0.00	near the usual relationship
2026-08-04	114.68	103.91	+0.13	near the usual relationship
2026-08-03	111.69	103.33	-0.20	near the usual relationship
2026-07-31	111.37	102.20	-0.06	near the usual relationship
2026-07-30	109.29	100.76	-0.13	near the usual relationship
2026-07-29	119.60	100.80	+1.32	LHX ahead
2026-07-28	122.68	103.47	+1.32	LHX ahead
2026-07-27	121.99	103.16	+1.29	LHX ahead
2026-07-24	120.67	102.16	+1.28	LHX ahead
2026-07-23	120.46	100.51	+1.53	LHX ahead
2026-07-22	114.62	98.96	+0.98	LHX ahead
2026-07-21	111.63	96.51	+0.97	LHX ahead
2026-07-20	112.77	98.71	+0.77	LHX ahead
2026-07-17	113.36	98.26	+0.93	LHX ahead
2026-07-16	114.33	97.71	+1.17	LHX ahead
2026-07-15	115.29	98.95	+1.11	LHX ahead
2026-07-14	116.57	99.60	+1.19	LHX ahead
2026-07-13	116.04	102.08	+0.72	LHX ahead
2026-07-10	116.88	101.67	+0.91	LHX ahead
2026-07-09	116.52	100.27	+1.09	LHX ahead
2026-07-08	117.95	102.70	+0.91	LHX ahead
2026-07-07	118.74	103.44	+0.90	LHX ahead
2026-07-06	121.10	103.20	+1.28	LHX ahead
2026-07-02	121.42	103.43	+1.29	LHX ahead
2026-07-01	117.47	97.96	+1.66	LHX ahead
2026-06-30	116.81	95.95	+1.93	LHX ahead
2026-06-29	116.32	93.45	+2.34	LHX ahead
2026-06-26	117.07	94.20	+2.35	LHX ahead
2026-06-25	115.97	94.07	+2.24	LHX ahead
2026-06-24	115.47	94.77	+2.07	LHX ahead
2026-06-23	118.08	96.69	+2.14	LHX ahead
2026-06-22	114.89	95.58	+1.88	LHX ahead
2026-06-18	118.51	98.25	+1.96	LHX ahead
2026-06-17	125.88	103.65	+2.11	LHX ahead
2026-06-16	124.79	103.85	+1.94	LHX ahead
2026-06-15	122.26	102.63	+1.80	LHX ahead
2026-06-12	123.72	103.68	+1.85	LHX ahead
2026-06-11	125.48	104.09	+2.07	LHX ahead
2026-06-10	121.79	102.14	+1.89	LHX ahead
2026-06-09	123.87	103.37	+2.00	LHX ahead
2026-06-08	121.43	101.89	+1.92	LHX ahead
2026-06-05	123.74	102.56	+2.18	LHX ahead
2026-06-04	124.52	102.71	+2.31	LHX ahead
2026-06-03	121.98	99.11	+2.65	LHX ahead
2026-06-02	123.85	101.09	+2.61	LHX ahead
2026-06-01	124.44	101.59	+2.65	LHX ahead
2026-05-29	126.69	106.20	+2.14	LHX ahead
2026-05-28	126.53	105.37	+2.30	LHX ahead
2026-05-27	124.23	103.87	+2.25	LHX ahead
2026-05-26	126.00	104.90	+2.37	LHX ahead
2026-05-22	125.40	104.67	+2.35	LHX ahead
2026-05-21	123.13	103.92	+2.15	LHX ahead
2026-05-20	124.27	104.03	+2.36	LHX ahead
2026-05-19	123.86	104.81	+2.15	LHX ahead
2026-05-18	125.07	103.62	+2.66	LHX ahead
2026-05-15	121.95	101.87	+2.52	LHX ahead
2026-05-14	123.65	103.36	+2.54	LHX ahead
2026-05-13	122.57	103.96	+2.23	LHX ahead
2026-05-12	124.40	105.18	+2.32	LHX ahead
2026-05-11	121.53	103.28	+2.23	LHX ahead
2026-05-08	120.44	103.53	+1.98	LHX ahead
2026-05-07	121.06	104.05	+1.99	LHX ahead
2026-05-06	121.47	105.43	+1.78	LHX ahead
2026-05-05	121.65	105.24	+1.86	LHX ahead
2026-05-04	124.05	106.82	+1.97	LHX ahead
2026-05-01	125.96	107.04	+2.28	LHX ahead
2026-04-30	128.85	109.17	+2.38	LHX ahead
2026-04-29	129.19	107.84	+2.74	LHX ahead
2026-04-28	130.59	108.86	+2.81	LHX ahead
2026-04-27	128.81	108.38	+2.65	LHX ahead
2026-04-24	127.63	108.35	+2.48	LHX ahead
2026-04-23	132.74	110.71	+2.93	LHX ahead
2026-04-22	133.31	111.08	+2.91	LHX ahead
2026-04-21	136.79	115.14	+2.64	LHX ahead
2026-04-20	140.11	123.77	+1.56	LHX ahead
2026-04-17	140.83	125.33	+1.39	LHX ahead
2026-04-16	142.06	126.75	+1.33	LHX ahead
2026-04-15	143.07	127.85	+1.29	LHX ahead
2026-04-14	142.92	128.14	+1.22	LHX ahead
2026-04-13	143.88	128.36	+1.31	LHX ahead
2026-04-10	142.13	126.93	+1.28	LHX ahead
2026-04-09	143.89	130.10	+1.05	LHX ahead
2026-04-08	145.50	129.52	+1.34	LHX ahead
2026-04-07	142.29	130.09	+0.85	LHX ahead
2026-04-06	144.20	131.09	+0.95	LHX ahead
2026-04-02	143.10	132.35	+0.65	LHX ahead
2026-04-01	142.26	131.31	+0.69	LHX ahead
2026-03-31	138.74	128.53	+0.63	LHX ahead
2026-03-30	136.64	126.53	+0.64	LHX ahead
2026-03-27	137.87	127.92	+0.61	LHX ahead
2026-03-26	140.42	130.37	+0.61	LHX ahead
2026-03-25	141.50	130.22	+0.75	LHX ahead
2026-03-24	141.26	128.52	+0.94	LHX ahead
2026-03-23	138.87	128.11	+0.73	LHX ahead
2026-03-20	141.83	133.19	+0.45	near the usual relationship
2026-03-19	146.19	134.54	+0.78	LHX ahead
2026-03-18	148.07	136.56	+0.75	LHX ahead
2026-03-17	148.27	136.41	+0.79	LHX ahead
2026-03-16	147.20	138.65	+0.44	near the usual relationship
2026-03-13	144.29	138.23	+0.18	near the usual relationship
2026-03-12	143.85	138.72	+0.09	near the usual relationship
2026-03-11	146.42	138.13	+0.43	near the usual relationship
2026-03-10	145.40	138.47	+0.29	near the usual relationship
2026-03-09	149.23	140.80	+0.44	near the usual relationship
2026-03-06	147.36	142.45	+0.07	near the usual relationship
2026-03-05	144.75	139.42	+0.13	near the usual relationship
2026-03-04	148.22	142.02	+0.22	near the usual relationship
2026-03-03	147.92	143.02	+0.09	near the usual relationship
2026-03-02	152.13	144.69	+0.34	near the usual relationship
2026-02-27	146.53	136.47	+0.66	LHX ahead
2026-02-26	142.76	133.93	+0.55	LHX ahead
2026-02-25	137.09	132.57	+0.11	near the usual relationship
2026-02-24	142.40	137.10	+0.18	near the usual relationship
2026-02-23	142.75	136.66	+0.27	near the usual relationship
2026-02-20	143.15	136.32	+0.35	near the usual relationship
2026-02-19	144.18	138.83	+0.19	near the usual relationship
2026-02-18	141.54	136.56	+0.17	near the usual relationship
2026-02-17	139.32	132.09	+0.43	near the usual relationship
2026-02-13	138.88	132.36	+0.36	near the usual relationship
2026-02-12	136.63	130.95	+0.28	near the usual relationship
2026-02-11	136.78	127.89	+0.65	LHX ahead
2026-02-10	138.71	129.05	+0.72	LHX ahead
2026-02-09	140.93	131.51	+0.69	LHX ahead
2026-02-06	140.55	133.60	+0.43	near the usual relationship
2026-02-05	137.56	131.22	+0.38	near the usual relationship
2026-02-04	136.29	129.95	+0.39	near the usual relationship
2026-02-03	141.32	132.82	+0.60	LHX ahead
2026-02-02	136.76	129.06	+0.55	LHX ahead
2026-01-30	137.81	130.42	+0.52	LHX ahead
2026-01-29	143.11	131.00	+0.99	LHX ahead
2026-01-28	144.83	129.83	+1.30	LHX ahead
2026-01-27	144.92	127.87	+1.54	LHX ahead
2026-01-26	142.37	124.53	+1.68	LHX ahead
2026-01-23	142.59	126.78	+1.46	LHX ahead
2026-01-22	143.00	126.31	+1.57	LHX ahead
2026-01-21	139.81	125.13	+1.39	LHX ahead
2026-01-20	137.60	123.83	+1.32	LHX ahead
2026-01-16	139.26	125.64	+1.30	LHX ahead
2026-01-15	136.84	123.33	+1.32	LHX ahead
2026-01-14	137.81	123.05	+1.47	LHX ahead
2026-01-13	137.17	117.84	+2.06	LHX ahead
2026-01-12	136.94	118.56	+1.97	LHX ahead
2026-01-09	134.97	116.58	+2.03	LHX ahead
2026-01-08	130.93	111.30	+2.30	LHX ahead
2026-01-07	124.51	108.71	+1.92	LHX ahead
2026-01-06	126.40	115.04	+1.31	LHX ahead
2026-01-05	125.16	115.17	+1.15	LHX ahead
2026-01-02	122.39	110.34	+1.47	LHX ahead
2025-12-31	118.00	107.43	+1.34	LHX ahead
2025-12-30	118.77	108.25	+1.33	LHX ahead
2025-12-29	118.95	108.85	+1.28	LHX ahead
2025-12-26	119.29	108.78	+1.35	LHX ahead
2025-12-24	119.84	109.71	+1.30	LHX ahead
2025-12-23	119.72	109.28	+1.35	LHX ahead
2025-12-22	118.62	110.15	+1.10	LHX ahead
2025-12-19	115.54	107.10	+1.14	LHX ahead
2025-12-18	113.64	105.41	+1.13	LHX ahead
2025-12-17	112.03	106.29	+0.79	LHX ahead
2025-12-16	113.69	107.15	+0.90	LHX ahead
2025-12-15	115.98	108.48	+1.02	LHX ahead
2025-12-12	115.34	107.34	+1.10	LHX ahead
2025-12-11	116.51	105.51	+1.54	LHX ahead
2025-12-10	114.94	104.63	+1.46	LHX ahead
2025-12-09	111.49	103.74	+1.12	LHX ahead
2025-12-08	113.21	104.29	+1.28	LHX ahead
2025-12-05	111.95	103.43	+1.24	LHX ahead
2025-12-04	112.75	104.18	+1.24	LHX ahead
2025-12-03	111.64	104.24	+1.08	LHX ahead
2025-12-02	110.13	103.05	+1.04	LHX ahead
2025-12-01	109.46	102.77	+0.99	LHX ahead
2025-11-28	112.02	107.81	+0.60	LHX ahead
2025-11-26	111.00	106.84	+0.59	LHX ahead
2025-11-25	111.07	107.28	+0.54	LHX ahead
2025-11-24	110.70	106.55	+0.59	LHX ahead
2025-11-21	111.66	106.77	+0.69	LHX ahead
2025-11-20	114.25	106.89	+1.03	LHX ahead
2025-11-19	114.66	106.45	+1.16	LHX ahead
2025-11-18	114.74	106.78	+1.12	LHX ahead
2025-11-17	115.64	106.07	+1.35	LHX ahead
2025-11-14	116.32	105.13	+1.59	LHX ahead
2025-11-13	115.91	105.13	+1.54	LHX ahead
2025-11-12	120.68	105.23	+2.19	LHX ahead
2025-11-11	121.26	106.77	+2.05	LHX ahead
2025-11-10	119.38	106.06	+1.93	LHX ahead
2025-11-07	116.83	107.13	+1.42	LHX ahead
2025-11-06	114.57	107.76	+1.01	LHX ahead
2025-11-05	115.40	107.48	+1.18	LHX ahead
2025-11-04	117.02	108.73	+1.22	LHX ahead
2025-11-03	116.00	108.41	+1.13	LHX ahead
2025-10-31	116.21	109.92	+0.94	LHX ahead
2025-10-30	118.94	109.01	+1.46	LHX ahead
2025-10-29	115.31	110.21	+0.77	LHX ahead
2025-10-28	115.52	112.11	+0.52	LHX ahead
2025-10-27	117.03	112.28	+0.72	LHX ahead
2025-10-24	117.86	114.09	+0.57	LHX ahead
2025-10-23	117.89	114.12	+0.57	LHX ahead
2025-10-22	116.15	112.38	+0.59	LHX ahead
2025-10-21	117.49	112.92	+0.70	LHX ahead
2025-10-20	116.79	113.42	+0.53	LHX ahead
2025-10-17	114.10	112.00	+0.35	near the usual relationship
2025-10-16	114.27	112.85	+0.26	near the usual relationship
2025-10-15	116.46	114.72	+0.30	near the usual relationship
2025-10-14	120.58	118.11	+0.39	near the usual relationship
2025-10-13	117.94	116.60	+0.24	near the usual relationship
2025-10-10	117.51	117.46	+0.06	near the usual relationship
2025-10-09	119.86	119.63	+0.09	near the usual relationship
2025-10-08	123.31	120.19	+0.49	near the usual relationship
2025-10-07	121.16	117.11	+0.63	LHX ahead
2025-10-06	121.80	116.53	+0.80	LHX ahead
2025-10-03	119.54	114.84	+0.74	LHX ahead
2025-10-02	119.02	113.98	+0.80	LHX ahead
2025-10-01	120.78	114.06	+1.04	LHX ahead
2025-09-30	122.76	114.79	+1.21	LHX ahead
2025-09-29	119.36	111.91	+1.18	LHX ahead
2025-09-26	118.00	112.01	+0.98	LHX ahead
2025-09-25	116.26	110.36	+0.99	LHX ahead
2025-09-24	114.16	110.45	+0.67	LHX ahead
2025-09-23	115.04	108.72	+1.07	LHX ahead
2025-09-22	114.29	108.55	+1.00	LHX ahead
2025-09-19	114.13	107.96	+1.07	LHX ahead
2025-09-18	113.65	108.09	+0.99	LHX ahead
2025-09-17	113.30	108.72	+0.85	LHX ahead
2025-09-16	114.27	109.15	+0.93	LHX ahead
2025-09-15	113.31	108.24	+0.94	LHX ahead
2025-09-12	112.23	108.51	+0.75	LHX ahead
2025-09-11	112.80	109.83	+0.64	LHX ahead
2025-09-10	110.80	109.25	+0.43	near the usual relationship
2025-09-09	108.82	107.69	+0.37	near the usual relationship
2025-09-08	110.09	109.63	+0.27	near the usual relationship
2025-09-05	109.49	109.42	+0.22	near the usual relationship
2025-09-04	109.73	109.23	+0.28	near the usual relationship
2025-09-03	109.78	109.46	+0.26	near the usual relationship
2025-09-02	110.59	111.03	+0.15	near the usual relationship
2025-08-29	111.59	111.16	+0.28	near the usual relationship
2025-08-28	111.36	110.76	+0.31	near the usual relationship
2025-08-27	111.25	110.52	+0.33	near the usual relationship
2025-08-26	111.61	111.72	+0.21	near the usual relationship
2025-08-25	111.01	110.54	+0.30	near the usual relationship
2025-08-22	110.85	111.61	+0.11	near the usual relationship
2025-08-21	110.99	112.51	+0.00	near the usual relationship
2025-08-20	111.00	111.63	+0.14	near the usual relationship
2025-08-19	109.43	110.44	+0.08	near the usual relationship
2025-08-18	109.30	110.18	+0.10	near the usual relationship
2025-08-15	108.75	110.02	+0.05	near the usual relationship
2025-08-14	108.95	109.97	+0.08	near the usual relationship
2025-08-13	108.62	109.66	+0.08	near the usual relationship
2025-08-12	108.61	109.42	+0.11	near the usual relationship
2025-08-11	108.66	109.32	+0.14	near the usual relationship
2025-08-08	108.42	109.48	+0.08	near the usual relationship
2025-08-07	110.06	110.66	+0.15	near the usual relationship
2025-08-06	111.30	111.02	+0.28	near the usual relationship
2025-08-05	111.83	111.15	+0.34	near the usual relationship
2025-08-04	111.77	111.11	+0.34	near the usual relationship
2025-08-01	111.85	110.48	+0.44	near the usual relationship
2025-07-31	110.47	108.63	+0.52	LHX ahead
2025-07-30	110.19	107.92	+0.59	LHX ahead
2025-07-29	109.46	107.99	+0.46	near the usual relationship
2025-07-28	108.32	107.13	+0.40	near the usual relationship
2025-07-25	108.24	107.34	+0.35	near the usual relationship
2025-07-24	109.82	107.10	+0.60	LHX ahead
2025-07-23	108.37	107.10	+0.38	near the usual relationship
2025-07-22	106.29	106.22	+0.19	near the usual relationship
2025-07-21	105.75	97.08	+1.49	LHX ahead
2025-07-18	106.43	97.79	+1.46	LHX ahead
2025-07-17	106.72	98.69	+1.35	LHX ahead
2025-07-16	105.98	97.91	+1.35	LHX ahead
2025-07-15	104.98	97.37	+1.28	LHX ahead
2025-07-14	105.44	98.18	+1.21	LHX ahead
2025-07-11	104.33	96.95	+1.23	LHX ahead
2025-07-10	104.55	96.81	+1.28	LHX ahead
2025-07-09	104.13	95.70	+1.39	LHX ahead
2025-07-08	103.34	95.11	+1.37	LHX ahead
2025-07-07	103.08	95.69	+1.24	LHX ahead
2025-07-03	102.79	94.99	+1.30	LHX ahead
2025-07-02	101.92	93.99	+1.33	LHX ahead
2025-07-01	101.37	94.86	+1.11	LHX ahead
2025-06-30	100.83	94.20	+1.13	LHX ahead
2025-06-27	99.28	93.07	+1.07	LHX ahead
2025-06-26	99.20	93.00	+1.07	LHX ahead
2025-06-25	99.63	91.73	+1.33	LHX ahead
2025-06-24	99.14	91.18	+1.34	LHX ahead
2025-06-23	100.94	94.14	+1.13	LHX ahead
2025-06-20	100.36	93.77	+1.10	LHX ahead
2025-06-18	100.02	93.19	+1.14	LHX ahead
2025-06-17	100.84	94.95	+0.98	LHX ahead
2025-06-16	99.59	93.73	+0.99	LHX ahead
2025-06-13	103.30	97.35	+0.96	LHX ahead
2025-06-12	100.65	93.66	+1.14	LHX ahead
2025-06-11	99.15	92.03	+1.18	LHX ahead
2025-06-10	98.40	92.09	+1.06	LHX ahead
2025-06-09	98.65	92.57	+1.02	LHX ahead
2025-06-06	98.19	92.20	+1.01	LHX ahead
2025-06-05	97.30	91.96	+0.92	LHX ahead
2025-06-04	97.40	92.56	+0.84	LHX ahead
2025-06-03	97.75	91.98	+0.98	LHX ahead
2025-06-02	97.74	91.07	+1.13	LHX ahead
2025-05-30	98.22	91.33	+1.16	LHX ahead
2025-05-29	97.85	90.32	+1.27	LHX ahead
2025-05-28	98.23	89.55	+1.46	LHX ahead
2025-05-27	99.65	89.58	+1.67	LHX ahead
2025-05-23	95.46	88.82	+1.18	LHX ahead
2025-05-22	96.15	89.09	+1.25	LHX ahead
2025-05-21	93.49	89.28	+0.81	LHX ahead
2025-05-20	92.78	89.79	+0.62	LHX ahead
2025-05-19	92.84	88.76	+0.80	LHX ahead
2025-05-16	92.53	89.14	+0.69	LHX ahead
2025-05-15	91.19	88.37	+0.61	LHX ahead
2025-05-14	88.29	85.97	+0.55	LHX ahead
2025-05-13	87.78	88.67	+0.01	near the usual relationship
2025-05-12	88.01	90.27	-0.21	near the usual relationship
2025-05-09	88.19	90.92	-0.29	near the usual relationship
2025-05-08	87.78	91.25	-0.41	near the usual relationship
2025-05-07	87.63	91.57	-0.49	near the usual relationship
2025-05-06	86.90	91.84	-0.65	NOC ahead
2025-05-05	87.88	92.94	-0.66	NOC ahead
2025-05-02	88.33	92.58	-0.53	NOC ahead
2025-05-01	88.40	91.69	-0.38	near the usual relationship
2025-04-30	88.44	91.66	-0.36	near the usual relationship
2025-04-29	88.93	90.83	-0.15	near the usual relationship
2025-04-28	87.93	91.05	-0.34	near the usual relationship
2025-04-25	86.86	89.15	-0.21	near the usual relationship
2025-04-24	86.93	87.24	+0.12	near the usual relationship
2025-04-23	86.95	89.05	-0.18	near the usual relationship
2025-04-22	86.45	87.43	+0.01	near the usual relationship
2025-04-21	86.07	100.10	-2.04	NOC ahead
2025-04-17	87.72	101.81	-2.03	NOC ahead
2025-04-16	87.98	101.27	-1.92	NOC ahead
2025-04-15	88.81	99.73	-1.57	NOC ahead
2025-04-14	89.51	100.95	-1.64	NOC ahead
2025-04-11	89.25	100.60	-1.65	NOC ahead
2025-04-10	85.82	97.23	-1.74	NOC ahead
2025-04-09	86.16	96.52	-1.58	NOC ahead
2025-04-08	80.69	92.69	-1.98	NOC ahead
2025-04-07	80.48	90.73	-1.71	NOC ahead
2025-04-04	81.22	91.47	-1.71	NOC ahead
2025-04-03	84.39	97.06	-2.05	NOC ahead
2025-04-02	85.18	96.49	-1.83	NOC ahead
2025-04-01	84.31	96.67	-2.04	NOC ahead
2025-03-31	84.13	96.46	-2.06	NOC ahead
2025-03-28	83.51	96.50	-2.21	NOC ahead
2025-03-27	85.50	96.80	-1.90	NOC ahead
2025-03-26	85.19	95.54	-1.77	NOC ahead
2025-03-25	85.44	95.45	-1.72	NOC ahead
2025-03-24	84.70	93.27	-1.49	NOC ahead
2025-03-21	83.60	92.45	-1.57	NOC ahead
2025-03-20	84.37	92.17	-1.38	NOC ahead
2025-03-19	85.63	92.60	-1.22	NOC ahead
2025-03-18	85.39	92.28	-1.22	NOC ahead
2025-03-17	85.61	92.41	-1.21	NOC ahead
2025-03-14	84.84	91.36	-1.17	NOC ahead
2025-03-13	84.89	92.43	-1.37	NOC ahead
2025-03-12	83.99	89.51	-1.02	NOC ahead
2025-03-11	85.35	93.09	-1.42	NOC ahead
2025-03-10	87.57	93.34	-1.04	NOC ahead
2025-03-07	88.47	91.66	-0.56	NOC ahead
2025-03-06	85.94	89.53	-0.66	NOC ahead
2025-03-05	84.62	89.34	-0.88	NOC ahead
2025-03-04	83.24	87.38	-0.79	NOC ahead
2025-03-03	83.49	89.19	-1.09	NOC ahead
2025-02-28	82.85	86.99	-0.80	NOC ahead
2025-02-27	82.36	86.66	-0.84	NOC ahead
2025-02-26	81.33	85.70	-0.87	NOC ahead
2025-02-25	81.99	86.85	-0.97	NOC ahead
2025-02-24	80.33	84.77	-0.91	NOC ahead
2025-02-21	80.00	84.39	-0.91	NOC ahead
2025-02-20	79.28	82.54	-0.68	NOC ahead
2025-02-19	78.24	81.66	-0.73	NOC ahead
2025-02-18	78.66	83.15	-0.95	NOC ahead
2025-02-14	79.43	82.69	-0.69	NOC ahead
2025-02-13	80.39	85.73	-1.12	NOC ahead
2025-02-12	80.64	88.71	-1.67	NOC ahead
2025-02-11	83.11	89.27	-1.26	NOC ahead
2025-02-10	83.78	89.37	-1.15	NOC ahead
2025-02-07	82.86	88.28	-1.13	NOC ahead
2025-02-06	83.07	87.90	-1.02	NOC ahead
2025-02-05	84.00	88.99	-1.04	NOC ahead
2025-02-04	84.70	90.88	-1.28	NOC ahead
2025-02-03	85.53	91.89	-1.31	NOC ahead
2025-01-31	85.22	91.80	-1.37	NOC ahead
2025-01-30	85.24	91.07	-1.23	NOC ahead
2025-01-29	85.20	90.72	-1.18	NOC ahead
2025-01-28	85.74	91.68	-1.26	NOC ahead
2025-01-27	89.35	94.81	-1.12	NOC ahead
2025-01-24	87.89	93.64	-1.20	NOC ahead
2025-01-23	88.35	94.16	-1.20	NOC ahead
2025-01-22	88.46	94.65	-1.27	NOC ahead
2025-01-21	89.58	95.04	-1.12	NOC ahead
2025-01-17	87.69	90.88	-0.69	NOC ahead
2025-01-16	87.82	90.66	-0.62	NOC ahead
2025-01-15	86.08	88.98	-0.64	NOC ahead
2025-01-14	86.38	89.58	-0.69	NOC ahead
2025-01-13	85.99	89.00	-0.65	NOC ahead
2025-01-10	83.72	86.42	-0.59	NOC ahead
2025-01-08	83.27	87.08	-0.82	NOC ahead
2025-01-07	81.60	85.23	-0.79	NOC ahead
2025-01-06	82.12	85.75	-0.79	NOC ahead
2025-01-03	84.31	88.14	-0.80	NOC ahead
2025-01-02	83.35	88.17	-1.01	NOC ahead
2024-12-31	84.52	88.41	-0.82	NOC ahead
2024-12-30	83.99	87.89	-0.83	NOC ahead
2024-12-27	85.36	88.80	-0.72	NOC ahead
2024-12-26	85.85	88.97	-0.65	NOC ahead
2024-12-24	85.75	88.75	-0.63	NOC ahead
2024-12-23	85.63	88.02	-0.51	NOC ahead
2024-12-20	85.84	88.46	-0.56	NOC ahead
2024-12-19	84.67	88.01	-0.71	NOC ahead
2024-12-18	85.79	88.11	-0.50	NOC ahead
2024-12-17	87.81	90.49	-0.55	NOC ahead
2024-12-16	89.25	90.92	-0.35	near the usual relationship
2024-12-13	89.70	90.43	-0.17	near the usual relationship
2024-12-12	90.18	90.72	-0.12	near the usual relationship
2024-12-11	92.00	89.61	+0.44	near the usual relationship
2024-12-10	92.72	90.47	+0.42	near the usual relationship
2024-12-09	92.35	90.27	+0.39	near the usual relationship
2024-12-06	94.32	89.23	+0.94	LHX ahead
2024-12-05	95.72	90.35	+0.99	LHX ahead
2024-12-04	96.66	91.68	+0.91	LHX ahead
2024-12-03	96.41	91.41	+0.92	LHX ahead
2024-12-02	97.60	91.33	+1.14	LHX ahead
2024-11-29	98.98	92.25	+1.21	LHX ahead
2024-11-27	98.61	92.14	+1.17	LHX ahead
2024-11-26	98.71	92.02	+1.21	LHX ahead
2024-11-25	96.71	91.42	+1.00	LHX ahead
2024-11-22	99.75	93.61	+1.12	LHX ahead
2024-11-21	99.12	93.52	+1.04	LHX ahead
2024-11-20	98.22	92.69	+1.04	LHX ahead
2024-11-19	97.91	92.51	+1.03	LHX ahead
2024-11-18	98.19	92.07	+1.15	LHX ahead
2024-11-15	99.28	93.07	+1.16	LHX ahead
2024-11-14	99.75	94.26	+1.04	LHX ahead
2024-11-13	105.17	98.05	+1.25	LHX ahead
2024-11-12	105.20	100.11	+0.95	LHX ahead
2024-11-11	106.21	100.55	+1.03	LHX ahead
2024-11-08	104.75	99.66	+0.96	LHX ahead
2024-11-07	102.42	98.08	+0.88	LHX ahead
2024-11-06	103.08	98.56	+0.90	LHX ahead
2024-11-05	100.87	96.63	+0.88	LHX ahead
2024-11-04	99.31	95.60	+0.82	LHX ahead
2024-11-01	99.48	95.51	+0.86	LHX ahead
2024-10-31	99.47	95.90	+0.81	LHX ahead
2024-10-30	98.65	95.21	+0.79	LHX ahead
2024-10-29	98.51	94.96	+0.81	LHX ahead
2024-10-28	99.70	96.49	+0.76	LHX ahead
2024-10-25	101.62	97.84	+0.83	LHX ahead
2024-10-24	98.15	98.66	+0.29	near the usual relationship
2024-10-23	98.81	97.29	+0.56	LHX ahead
2024-10-22	98.45	98.00	+0.43	near the usual relationship
2024-10-21	99.75	99.79	+0.37	near the usual relationship
2024-10-18	100.00	100.00	+0.39	near the usual relationship

One-day company-specific moves (4+ standard deviations, which block ideas for 10 sessions): Apr 22, 2025 (LHX +0.5%, NOC -12.7%); Jul 22, 2025 (LHX +0.5%, NOC +9.4%); Jul 30, 2026 (LHX -8.6%, NOC -0.0%). Upcoming earnings: LHX 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)

2 simulated trades to Oct 20, 2026: +10.23% per trade on average after costs, 2 won.

Legs	Entered	Exited	Why	Days	Before costs	Costs + borrow	After costs
Long LHX · Short NOC	Jul 31, 2020	Nov 4, 2020	converged	96	$916.35	-$56.17	$865.60 (+8.66%)
Long LHX · Short NOC	Mar 17, 2020	Mar 26, 2020	converged	9	$1,225.22	-$46.19	$1,179.58 (+11.80%)

Per $10,000 a leg. A replay on today's companies cannot prove an edge.

The companies

LHX and NOC at a glance

LHX L3Harris Technologies Inc.

Listing: NYSE · SEC CIK 202058
Industry: Industrial Machinery/Components · SIC 3812 Search, Detection, Navigation, Guidance, Aeronautical Sys
Market value: $45.4B
Price history: 2,521 daily closes, Oct 12, 2016 to Oct 22, 2026

NOC Northrop Grumman Corporation

Listing: NYSE · SEC CIK 1133421
Industry: Industrial Machinery/Components · SIC 3812 Search, Detection, Navigation, Guidance, Aeronautical Sys
Market value: $72.5B
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
GRMN / LHX	Watchlist	GRMN by 1.76 sd	SIC 3812 Search, Detection, Navigation, Guidance, Aeronautical Sys
NOC / GRMN	Watchlist	GRMN by 1.30 sd	SIC 3812 Search, Detection, Navigation, Guidance, Aeronautical Sys

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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.