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NGG

National Grid PLC
$83.41 +0.13 (+0.16%) At close · Jul 14
Market Cap
$82.77B
Shares
995,175,617

Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.

The Jun 30, 2026 filing window is still open — showing the latest known positions. Funds that have not filed yet carry their prior-quarter positions; a fund that filed without this stock counts as sold out.
Holders: 593
Total Value: $5,234,046,847
Total Shares: 61,880,622
Showing 1–100 of 603 holdings by value · page 1 of 7

Institutional Ownership Trend

26 quarters

Holder Concentration

Across 589 13F filers
Top Holder
9.1%
Jun 2023 → Mar 2026 · range 8.6% – 11.1%
of institutional value
Top 5
29.0%
Jun 2023 → Mar 2026 · range 29.0% – 40.3%
of institutional value
Top 10
46.1%
Jun 2023 → Mar 2026 · range 46.1% – 60.6%
of institutional value
HHI
318
Jun 2023 → Mar 2026 · range 318 – 478
Broadly held
Showing 100 of 603
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Holder Value (USD) % of 13F Shares Open
Key facts CIK 1004315 CUSIP 636274409 13F (30d) 55 filings 54 filers Visit website