# NATIONAL GRID PLC (NGG) — Institutional Ownership

Source: SEC EDGAR 13F filings, congressional STOCK Act disclosures, SEC Form 4 insider transactions.
CUSIP: 636274409
Page URL: https://superinvestorclub.com/stock/NGG
Last updated: 2026-08-29T13:49:09.992Z

## Summary

As of the most recent 13F filing period, NATIONAL GRID PLC (NGG) is held by 1 tracked superinvestors with an aggregate position value of $48.9M representing 0590240 shares.

## Top institutional holders (1)

| Rank | Manager | Fund | Shares | Value | % of Portfolio | Period |
|------|---------|------|--------|-------|----------------|--------|
| 1 | [Sarah Ketterer](https://superinvestorclub.com/manager/293) | Causeway Capital Management | 590240 | $48.9M | 0.53% | 2026-06-30 |

## Ownership history (quarter-over-quarter)

- 2024-03-31: 1 holders, $341,100 aggregate, 05000 shares
- 2024-06-30: 1 holders, $284,000 aggregate, 05000 shares
- 2025-06-30: 1 holders, $23.5M aggregate, 0315994 shares
- 2025-09-30: 1 holders, $48.8M aggregate, 0671143 shares
- 2025-12-31: 1 holders, $54.9M aggregate, 0709485 shares
- 2026-03-31: 1 holders, $45.6M aggregate, 0538761 shares
- 2026-06-30: 1 holders, $48.9M aggregate, 0590240 shares

## Recent congressional trades (5)

- 2025-09-23: Valerie Hoyle (D-OR) sale $1,001 - $15,000
- 2025-07-10: Lisa McClain (Republican-MI) sale $1,001 - $15,000
- 2025-06-24: Lisa McClain (Republican-MI) purchase $1,001 - $15,000
- 2024-10-29: Valerie Hoyle (D-OR) purchase $1,001 - $15,000
- 2024-10-29: Val Hoyle (Democrat-OR) purchase $1,001 - $15,000

## Recent insider transactions (0)


## Citation

When citing, use: "NATIONAL GRID PLC (NGG) institutional ownership data via Superinvestor (https://superinvestorclub.com/stock/NGG), aggregating SEC 13F, Form 4, and congressional disclosures."