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NI · Nisource Inc.

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Market Cap
$19.46B
Shares
479.56M

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.

Holders: 909
Total Value: $21,916,470,567
Total Shares: 460,914,338
Showing 1–100 of 919 holdings by value · page 1 of 10

Institutional Ownership Trend

26 quarters

Holder Concentration

Across 909 13F filers · Δ vs Mar 31, 2026
Top Holder
11.9%
Sep 2023 → Jun 2026 · range 11.3% – 13.9%
+0.6 pts
Top 5
37.1%
Sep 2023 → Jun 2026 · range 34.6% – 42.4%
−3.9 pts
Top 10
48.4%
Sep 2023 → Jun 2026 · range 46.2% – 52.9%
−3.9 pts
HHI
358
Sep 2023 → Jun 2026 · range 358 – 489
Broadly held−62

Quarterly Activity

vs Mar 31, 2026
New
105
Increased
396
Decreased
246
Sold Out
81
Unchanged
162
Holder count: +24
Institutional value: +3.2%
Shares held: +1.2%

Top Buyers

vs Mar 31, 2026
Institution Added Now Holds Open

Top Sellers

vs Mar 31, 2026
Institution Sold Now Holds Open

Top New Positions

vs Mar 31, 2026
Institution Acquired Value (USD) Open

Top Sold-Out Positions

vs Mar 31, 2026
Institution Previously Held Last Value (USD) Open
Showing 100 of 919
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Holder Value (USD) % of 13F Shares Open
Key facts CIK 1111711 CUSIP 65473P105 13F (30d) 620 filings 591 filers Visit website Investor relations