NiSource Inc. (NI) ownership: Top institutional holder: VANGUARD GROUP INC ($2.61B). Insider activity: Net Seller (3 buys, 17 sells). 5 recent congressional STOCK Act disclosures. SEC EDGAR first-party data.
| Holder | Shares | Market Value | Reported |
|---|---|---|---|
| VANGUARD GROUP INC | 62408533.00 | $2.61B | 2025-12-31 |
| BlackRock, Inc. | 51474846.00 | $2.40B | 2026-03-31 |
| T. Rowe Price Investment Management, Inc. | 49815015.00 | $2.32B | 2026-03-31 |
| VANGUARD CAPITAL MANAGEMENT LLC | 31142795.00 | $1.45B | 2026-03-31 |
| STATE STREET CORP | 27102422.00 | $1.26B | 2026-03-31 |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 26980955.00 | $1.26B | 2026-03-31 |
| GEODE CAPITAL MANAGEMENT, LLC | 12613176.00 | $586.26M | 2026-03-31 |
| DEUTSCHE BANK AG\ | 11718076.00 | $546.77M | 2026-03-31 |
| Insider | Transaction | Value | Date |
|---|---|---|---|
| Sell | null | 2026-05-22 | |
| Sell | null | 2026-05-21 | |
| Sell | null | 2026-05-20 | |
| Sell | null | 2026-05-14 | |
| Sell | null | 2026-05-11 | |
| Sell | null | 2026-05-11 | |
| Sell | null | 2026-05-11 | |
| Sell | null | 2026-05-11 |
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Institutional data from SEC Form 13F. Insider data from SEC Form 4. Congressional data from STOCK Act disclosures. Not personalized investment advice.