NGG · National Grid PLC · Off Exchange

$81.07 +0.01 (+0.01%)

Market Cap

$81.50B

1.01B

Volume · Oct 21 29.84K Avg daily vol (3M) 863.19K

Weekly off-exchange (dark pool / OTC) trading volume reported to FINRA under its OTC/ATS Transparency data. ATS volume is executed on alternating trading systems (dark pools); non-ATS OTC is other over-the-counter dealer volume. The off-exchange share is total off-exchange volume as a percentage of consolidated weekly trading volume for the same Monday–Friday week.

1M 3M 6M 1Y 5Y All

Off-Exchange Volume History

Week Start	ATS Volume	Non-ATS OTC Volume	Total Off-Exchange	% of FINRA Weekly Volume
2026-09-14	1,251,894	1,023,564	2,275,458	41.7%
2026-09-07	629,087	795,693	1,424,780	39.9%
2026-08-31	845,058	1,143,311	1,988,369	43.8%
2026-08-24	543,986	633,301	1,177,287	40.6%
2026-08-17	1,145,108	971,134	2,116,242	42.5%
2026-08-10	645,395	549,250	1,194,645	38.4%
2026-08-03	801,365	677,844	1,479,209	40.3%
2026-07-27	1,012,981	711,304	1,724,285	43.0%
2026-07-20	759,110	555,499	1,314,609	35.9%
2026-07-13	873,850	595,076	1,468,926	37.0%
2026-07-06	835,455	635,636	1,471,091	38.4%
2026-06-29	1,047,298	695,708	1,743,006	38.9%
2026-06-22	1,257,382	1,364,670	2,622,052	33.6%
2026-06-15	953,551	938,454	1,892,005	32.4%
2026-06-08	837,566	649,218	1,486,784	34.9%
2026-06-01	1,047,986	759,491	1,807,477	32.9%
2026-05-25	767,305	519,388	1,286,693	31.0%
2026-05-18	1,208,022	2,222,545	3,430,567	41.5%
2026-05-11	3,162,251	8,163,590	11,325,841	60.8%
2026-05-04	881,112	641,332	1,522,444	37.5%
2026-04-27	775,199	651,554	1,426,753	30.5%
2026-04-20	728,989	645,854	1,374,843	31.0%
2026-04-13	686,240	704,700	1,390,940	36.4%
2026-04-06	751,513	608,941	1,360,454	36.7%
2026-03-30	957,296	627,047	1,584,343	35.9%
2026-03-23	1,127,475	1,171,459	2,298,934	37.7%
2026-03-16	1,481,703	1,840,189	3,321,892	39.9%
2026-03-09	1,288,191	1,002,006	2,290,197	33.3%
2026-03-02	1,256,411	797,786	2,054,197	34.7%
2026-02-23	1,504,872	1,528,809	3,033,681	41.9%
2026-02-16	994,393	921,951	1,916,344	38.6%
2026-02-09	2,195,902	1,289,805	3,485,707	42.8%
2026-02-02	1,237,951	744,312	1,982,263	39.1%
2026-01-26	873,982	761,449	1,635,431	38.1%
2026-01-19	518,814	428,081	946,895	37.9%
2026-01-12	699,003	537,116	1,236,119	40.3%
2026-01-05	1,054,278	787,599	1,841,877	44.4%
2025-12-29	294,414	401,493	695,907	45.3%
2025-12-22	338,987	312,924	651,911	47.2%
2025-12-15	757,233	614,679	1,371,912	38.5%
2025-12-08	534,305	460,240	994,545	44.1%
2025-12-01	692,409	485,167	1,177,576	36.7%
2025-11-24	548,464	360,138	908,602	30.9%
2025-11-17	714,353	527,818	1,242,171	33.3%
2025-11-10	600,321	478,181	1,078,502	28.6%
2025-11-03	751,560	550,090	1,301,650	39.2%
2025-10-27	532,422	421,895	954,317	38.8%

Showing 1–47 of 47 weeks

Key facts CIK 1004315 CUSIP 636274409 13F (30d) 104 filings 101 filers Visit website Investor relations