NiSource
837 hedge funds and large institutions have $19.3B invested in NiSource in 2025 Q4 according to their latest regulatory filings, with 123 funds opening new positions, 311 increasing their positions, 257 reducing their positions, and 57 closing their positions.
307% more call options, than puts
Call options by funds: $25M | Put options by funds: $6.14M
116% more first-time investments, than exits
New positions opened: 123 | Existing positions closed: 57
21% more repeat investments, than reductions
Existing positions increased: 311 | Existing positions reduced: 257
7% more funds holding
Funds holding: 785 → 837 (+52)
2.32% more ownership
Funds ownership: 94.54% → 96.86% (+2.3%)
0% more capital invested
Capital invested by funds: $19.3B → $19.3B (+$33.3M)
13% less funds holding in top 10
Funds holding in top 10: 8 → 7 (-1)
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
T. Rowe Price Investment Management
Baltimore,
Maryland
|
+$352M |
| 2 |
BlackRock
New York
|
+$144M |
| 3 |
Wellington Management Group
Boston,
Massachusetts
|
+$76.2M |
| 4 |
Citadel Advisors
Miami,
Florida
|
+$56M |
| 5 |
UBS Group
Zurich,
Switzerland
|
+$53.3M |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
MIM
Merewether Investment Management
Dallas,
Texas
|
-$127M |
| 2 |
Millennium Management
New York
|
-$120M |
| 3 |
ZP
Zimmer Partners
New York
|
-$86.2M |
| 4 |
Deutsche Bank
Frankfurt Am Main Ge,
Germany
|
-$71.9M |
| 5 |
Balyasny Asset Management
Chicago,
Illinois
|
-$69.1M |
NI Hedge Fund Activity: Q4 2025 in Review
837 of the 8,284 institutional investors tracked by Wall St. Rank reported a position in NiSource (NI) for Q4 2025, worth a combined $19.3B — up 0.17% from $19.3B a quarter earlier.
Buyers outnumbered sellers: 123 funds opened new NI positions and 57 closed out — a net gain of 66 holders — while 311 added to existing stakes and 257 trimmed.
The largest buyer was T. Rowe Price Investment Management, adding an estimated $352M. The largest seller was Merewether Investment Management, exiting entirely with an estimated $127M sold.
- 837 institutional investors held NiSource (NI) as of Q4 2025, up from 785 in Q3 2025.
- Funds reported $19.3B of NiSource stock for Q4 2025, up 0.17% quarter-over-quarter.
- 123 funds opened new NiSource positions in Q4 2025 and 57 closed out, a net change of +66 holders.
- The largest NiSource buyer in Q4 2025 was T. Rowe Price Investment Management, an estimated $352M added.
- The largest NiSource seller in Q4 2025 was Merewether Investment Management, an estimated $127M sold.
Based on aggregated 13F filings for Q4 2025.