NiSource Inc.
NiSource Inc. (NI) Stock Ownership
Institutional vs insider vs public ownership from 13F and float data — top holders, activity, and insider trades below.
SEC 13F · FMP · NI · as of Sep 30, 2025
Ownership Breakdown
803
Institutional Holders
▲ 15 vs Q2
$19.28B
Total Inst. Value
▲ $970.44M vs Q2
479.44M
Shares Outstanding
freeFloat 99.61%
445.17M
13F Shares Held
▼ 8.73M vs Q2
Institutional ownership = 13F shares ÷ total outstanding. Insider % = 100 − free float. Public % = free float − institution %. Data: FMP /symbol-positions-summary + /shares-float + SEC EDGAR.
Top Institutional Holders
NI largest shareholders · institutional ownership
Q3 2025 · SEC 13F
Showing top 10 holders
| Holder | Shares | % Owned | Weight | Value | Reported | Change |
|---|---|---|---|---|---|---|
VANGUARD GROUP INC electric & other services combined | 61.38M | 13.03% | 13.03% | $2.66T | Nov 7, 2025 | ▼ 46.2K |
BLACKROCK, INC. electric & other services combined | 48.21M | 10.24% | 10.24% | $2.09T | Nov 12, 2025 | ▼ 182.8K |
T. ROWE PRICE INVESTMENT MANAGEMENT, INC. electric & other services combined | 43.26M | 9.19% | 9.19% | $1.87T | Nov 14, 2025 | ▲ 2.55M |
STATE STREET CORP electric & other services combined | 25.58M | 5.43% | 5.43% | $1.11T | Nov 14, 2025 | ▲ 854.8K |
GEODE CAPITAL MANAGEMENT, LLC electric & other services combined | 12.21M | 2.59% | 2.59% | $526.68B | Nov 12, 2025 | ▼ 29.2K |
DEUTSCHE BANK AG\ electric & other services combined | 12.03M | 2.55% | 2.55% | $521.00B | Nov 13, 2025 | ▼ 1.94M |
JENNISON ASSOCIATES LLC electric & other services combined | 9.53M | 2.02% | 2.02% | $412.54B | Oct 30, 2025 | ▼ 2.21M |
FMR LLC electric & other services combined | 9.40M | 2.00% | 2.00% | $406.93B | Nov 13, 2025 | ▼ 467.5K |
JPMORGAN CHASE & CO electric & other services combined | 8.50M | 1.80% | 1.80% | $367.85B | Nov 26, 2025 | ▲ 183.2K |
CAPITAL INTERNATIONAL INVESTORS electric & other services combined | 8.14M | 1.73% | 1.73% | $352.30B | Nov 13, 2025 | ▲ 1.07M |
Data from SEC Form 13F filings. Ownership bar normalised to largest holder. Change flags: isNew / isSoldOut / changeInSharesNumber (FMP extract-analytics/holder).
Institutional Activity
Q3 2025 vs prior quarter
Q3 2025
19
Increased
+20.54M shares2
New Positions
first time holders29
Decreased
−14.03M shares0
Sold Out
fully exitedNet shares change (top 50)
+6.51M
+20.54M / −14.03M
Net new holders
-8
2 new / 0 exited
Based on top 50 institutional holders by position size. Fields: isNew, isSoldOut, changeInSharesNumber (FMP extract-analytics/holder, limit=50).
Insider Buying vs Selling
NI insider trading · insider activity
Source: SEC Form 4
Insiders have been primarily selling shares recently. Selling may be driven by pre-scheduled Rule 10b5-1 plans rather than negative sentiment.
11
Buy transactions
2
Sell transactions
5.50
Buy/Sell ratio
$0M
Total disposed
Recent Insider Transactions
Showing 10 most recent · Common Stock only
| Name · Role | Date | Type | Shares | Price | Value | After Trans. | Filing |
|---|---|---|---|---|---|---|---|
Berman Melanie B. EVP Administration & CHRO | May 22, 2026 | Sale | 15,000 | $47.68 | $715.2K | 36.0K | Form 4 ↗ |
Yates Lloyd M Director and President & CEO | May 21, 2026 | Sale | 19,905 | $47.73 | $950.1K | 519.6K | Form 4 ↗ |
BIRMINGHAM MELODY EVP & Grp President, Utilities | May 14, 2026 | Sale | 10,000 | $47.19 | $471.9K | 117.9K | Form 4 ↗ |
BIRMINGHAM MELODY EVP & Grp President, Utilities | May 20, 2026 | Sale | 2,500 | $47.43 | $118.6K | 116.0K | Form 4 ↗ |
Lee Cassandra S. director | May 11, 2026 | Award | 3,807 | $47.03 | $179.0K | 29.0K | Form 4 ↗ |
McAvoy John director | May 11, 2026 | Award | 3,807 | $47.03 | $179.0K | 15.8K | Form 4 ↗ |
KABAT KEVIN T director | May 11, 2026 | Award | 3,807 | $47.03 | $179.0K | 66.5K | Form 4 ↗ |
JOHNSON WILLIAM D director | May 11, 2026 | Award | 3,807 | $47.03 | $179.0K | 28.4K | Form 4 ↗ |
Jesanis Michael E director | May 11, 2026 | Award | 3,807 | $47.03 | $179.0K | 22.5K | Form 4 ↗ |
Hersman Deborah director | May 11, 2026 | Award | 3,807 | $47.03 | $179.0K | 47.2K | Form 4 ↗ |
Source: /insider-trading/search (FMP stable). Buy/Sell direction: acquisitionOrDisposition A=Buy, D=Sell. RSU vesting (M-Exempt) excluded from sentiment bar. All data from SEC EDGAR public filings.
About institutional & insider ownership
NiSource Inc. (NI) is primarily owned by institutional investors, who hold approximately 92.8% of total shares outstanding. Company insiders own approximately 0.39%, while retail and public investors account for the remaining 6.76%.
The largest institutional shareholder of NiSource Inc. is VANGUARD GROUP INC, holding approximately 61.38 million shares — equal to 13.03% of outstanding shares — as of September 30, 2025.
A total of 803 institutional investors currently hold NI stock, with a combined institutional value of approximately $19.28 billion as of the most recent 13F filing period.
Frequently asked questions
NI ownershipNiSource Inc. (NI) is primarily owned by institutional investors, who hold approximately 92.8% of shares. The largest shareholder is VANGUARD GROUP INC with a 13.03% stake. Company insiders hold 0.39%. Data sourced from SEC Form 13F as of September 30, 2025.