National Grid plc - Depositary Receipt (Common Stock)
US ˙ NYSE ˙ US6362744095

SecurityNGG / National Grid plc - Depositary Receipt (Common Stock)
InstitutionDimensional Fund Advisors Lp
Latest Disclosed Ownership891,393 shares
Latest Disclosed Value $ 75,411,982
Dimensional Fund Advisors Lp reports 1.82% increase in ownership of NGG / National Grid plc - Depositary Receipt (Common Stock)

On May 7, 2026 - Dimensional Fund Advisors Lp filed a 13F-HR form disclosing ownership of 891,393 shares of National Grid plc - Depositary Receipt (Common Stock) (US:NGG) valued at $75,411,848 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 12, 2026 disclosing 875,435 shares of National Grid plc - Depositary Receipt (Common Stock). This represents a change in shares of 1.82% during the quarter. The current value of the position is $72,969,431 USD.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date		 Effective
Date		Form Security Class ID Avg Price
Paid (Est)		 Reported
Shares		 ΔShares ΔShares
(%)		 Reported
Value
(x1000)		 ΔValue
(%)		 Alloc
(%)		 ΔAlloc ΔAlloc (%) Cost Basis
(x1000)		 Unrealized
Gain/Loss
(x1000)
2026-05-07 2026-03-31 13F NATIONAL GRID SPONSORED ADR NE 636274409 891,393 15,958 1.82 75,412 11.37 0.0157
2026-02-12 2025-12-31 13F NATIONAL GRID SPONSORED ADR NE 636274409 875,435 43,656 5.25 67,715 12.03 0.0142
2025-11-12 2025-09-30 13F NATIONAL GRID SPONSORED ADR NE 636274409 831,779 110,503 15.32 60,445 12.62 0.0130
2025-08-12 2025-06-30 13F NATIONAL GRID SPONSORED ADR NE 636274409 721,276 5,436 0.76 53,670 14.27 0.0124
2025-05-13 2025-03-31 13F NATIONAL GRID SPONSORED ADR NE 636274409 715,840 9,550 1.35 46,966 11.91 0.0117
2025-02-13 2024-12-31 13F NATIONAL GRID SPONSORED ADR NE 636274409 706,290 12,228 1.76 41,968 -13.21 0.0101
2024-11-07 2024-09-30 13F NATIONAL GRID SPONSORED ADR NE 636274409 694,062 12,861 1.89 48,355 24.97 0.0117
2024-08-09 2024-06-30 13F NATIONAL GRID SPONSORED ADR NE 636274409 681,201 59 0.01 38,692 -16.73 0.0101
2024-05-10 2024-03-31 13F NATIONAL GRID SPONSORED ADR NE 636274409 681,142 10,511 1.57 46,468 1.91 0.0126
2024-02-07 2023-12-31 13F NATIONAL GRID SPONSORED ADR NE 636274409 670,631 5,934 0.89 45,596 13.14 0.0133
2023-11-09 2023-09-30 13F NATIONAL GRID SPONSORED ADR NE 636274409 664,697 5,873 0.89 40,301 -9.15 0.0132
2023-08-09 2023-06-30 13F NATIONAL GRID SPONSORED ADR NE 636274409 658,824 13,163 2.04 44,359 1.05 0.0141
2023-05-12 2023-03-31 13F NATIONAL GRID SPONSORED ADR NE 636274409 645,661 6,440 1.01 43,899 115,421.05 0.0148
2023-02-09 2022-12-31 13F NATIONAL GRID SPONSORED ADR NE 636274409 639,221 14,683 2.35 39 -99.88 0.0114
2022-11-10 2022-09-30 13F NATIONAL GRID SPONSORED ADR NE 636274409 624,538 7,351 1.19 32,183 -19.39 0.0124
2022-08-12 2022-06-30 13F NATIONAL GRID SPONSORED ADR NE 636274409 617,187 10,644 1.75 39,926 -14.37 0.0143
2022-05-13 2022-03-31 13F NATIONAL GRID ADR 636274409 606,543 31,695 5.51 46,625 12.15 0.0144
2022-02-09 2021-12-31 13F NATIONAL GRID ADR 636274409 574,848 11,978 2.13 41,573 23.86 0.0126
2021-11-12 2021-09-30 13F NATIONAL GRID ADR 636274409 562,870 12,600 2.29 33,564 -4.60 0.0108
2021-08-12 2021-06-30 13F NATIONAL GRID ADR 636274409 550,270 -117 -0.02 35,184 7.91 0.0111
2021-05-14 2021-03-31 13F NATIONAL GRID ADR 636274409 550,387 -699 -0.13 32,605 0.23 0.0108
2021-03-08 2020-12-31 13F/A-2 NATIONAL GRID ADR 636274409 551,086 20,817 3.93 32,531 6.16 0.0117
2021-02-11 2020-12-31 13F NATIONAL GRID ADR 636274409 551,086 20,817 32,531 11,748.4681
2020-11-12 2020-09-30 13F NATIONAL GRID ADR 636274409 530,269 11,377 2.19 30,644 -2.77 0.0130
2020-08-13 2020-06-30 13F NATIONAL GRID ADR 636274409 518,892 3,890 0.76 31,518 5.03 0.0139
2020-05-14 2020-03-31 13F NATIONAL GRID ADR 636274409 515,002 48,761 10.46 30,009 2.70 0.0156
2020-02-14 2019-12-31 13F NATIONAL GRID ADR 636274409 466,241 16,722 3.72 29,219 20.08 0.0106
2019-11-12 2019-09-30 13F NATIONAL GRID ADR 636274409 449,519 13,649 3.13 24,332 4.97 0.0095
2019-08-13 2019-06-30 13F NATIONAL GRID ADR 636274409 435,870 26,216 6.40 23,180 1.33 0.0090
2019-08-12 2019-03-31 13F/A-2 NATIONAL GRID ADR 636274409 409,654 8,482 2.11 22,875 18.84 0.0091
2019-05-10 2019-03-31 13F NATIONAL GRID ADR 636274409 409,654 8,482 22,875
2019-02-26 2018-12-31 13F/A-1 NATIONAL GRID ADR 636274409 401,172 21,398 5.63 19,248 -2.27 0.0087
2019-02-13 2018-12-31 13F NATIONAL GRID ADR 636274409 401,172 21,398 19,248
2018-11-13 2018-09-30 13F NATIONAL GRID ADR 636274409 379,774 15,086 4.14 19,695 -3.30 0.0075
2018-08-10 2018-06-30 13F NATIONAL GRID ADR 636274409 364,688 9,220 2.59 20,368 1.54 0.0081
2018-05-11 2018-03-31 13F NATIONAL GRID ADR 636274409 355,468 -10,422 -2.85 20,059 -6.78 0.0084
2018-02-12 2017-12-31 13F NATIONAL GRID ADR 636274409 365,890 -15,019 -3.94 21,518 -9.92 0.0089
2017-11-13 2017-09-30 13F NATIONAL GRID ADR 636274409 380,909 3,353 0.89 23,887 0.71 0.0104
2017-08-11 2017-06-30 13F NATIONAL GRID ADR 636274409 377,556 11,707 3.20 23,718 2.13 0.0110
2017-05-12 2017-03-31 13F NATIONAL GRID ADR 636274300 365,849 -474 -0.13 23,224 8.69 0.0111
2017-02-09 2016-12-31 13F NATIONAL GRID ADR 636274300 366,323 13,609 3.86 21,368 -14.80 0.0107
2016-11-10 2016-09-30 13F NATIONAL GRID ADR 636274300 352,714 5,620 1.62 25,081 -2.78 0.0136
2016-08-09 2016-06-30 13F NATIONAL GRID ADR 636274300 347,094 3,627 1.06 25,799 5.17 0.0148
2016-05-13 2016-03-31 13F NATIONAL GRID ADR 636274300 343,467 11,852 3.57 24,530 6.37 0.0147
2016-02-10 2015-12-31 13F NATIONAL GRID ADR 636274300 331,615 1,542 0.47 23,061 0.34 0.0144
2015-11-13 2015-09-30 13F NATIONAL GRID ADR 636274300 330,073 7,531 2.33 22,983 10.35 0.0151
2015-08-14 2015-06-30 13F NATIONAL GRID ADR 636274300 322,542 5,060 1.59 20,827 1.53 0.0128
2015-05-14 2015-03-31 13F NATIONAL GRID ADR 636274300 317,482 9,457 3.07 20,513 -5.75 0.0130
2015-02-06 2014-12-31 13F NATIONAL GRID ADR 636274300 308,025 5,109 1.69 21,765 -0.04 0.0143
2014-11-13 2014-09-30 13F NATIONAL GRID ADR 636274300 302,916 7,394 2.50 21,774 -0.94 0.0154
2014-08-08 2014-06-30 13F NATIONAL GRID ADR 636274300 295,522 6,121 2.12 21,981 10.50 0.0153
2014-05-14 2014-03-31 13F NATIONAL GRID ADR 636274300 289,401 1,193 0.41 19,893 5.67 0.0149
2014-02-12 2013-12-31 13F NATIONAL GRID ADR 636274300 288,208 4,954 1.75 18,826 12.56 0.0147
2013-11-13 2013-09-30 13F NATIONAL GRID ADR 636274300 283,254 9,768 3.57 16,726 7.92 0.0145
2013-08-15 2013-06-30 13F NATIONAL GRID ADR 636274300 273,486 273,486 15,498 0.0146
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.