NiSource Inc.
US ˙ NYSE ˙ US65473P1057

SecurityNI / NiSource Inc.
InstitutionMan Group plc
Latest Disclosed Ownership277,219 shares
Latest Disclosed Value $ 12,935,039
Man Group plc reports 24.96% decrease in ownership of NI / NiSource Inc.

On May 15, 2026 - Man Group plc filed a 13F-HR form disclosing ownership of 277,219 shares of NiSource Inc. (US:NI) valued at $12,935,039 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 369,425 shares of NiSource Inc.. This represents a change in shares of -24.96% during the quarter. The current value of the position is $12,621,781 USD.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

Upgrade to unlock premium data and export to Excel .

Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date
Effective
Date
Form Security Class ID Avg Price
Paid (Est)
Reported
Shares
ΔShares ΔShares
(%)
Reported
Value
(x1000)
ΔValue
(%)
Alloc
(%)
ΔAlloc ΔAlloc (%) Cost Basis
(x1000)
Unrealized
Gain/Loss
(x1000)
2026-05-15 2026-03-31 13F NISOURCE COM 65473P105 277,219 -92,206 -24.96 12,935 -16.15 0.0235
2026-02-17 2025-12-31 13F NISOURCE COM 65473P105 369,425 54,130 17.17 15,427 13.00 0.0262
2025-11-14 2025-09-30 13F NISOURCE COM 65473P105 315,295 -5,294 -1.65 13,652 5.57 0.0237
2025-08-14 2025-06-30 13F NISOURCE COM 65473P105 320,589 35,287 12.37 12,933 13.07 0.0246
2025-05-15 2025-03-31 13F NISOURCE COM 65473P105 285,302 144,227 102.23 11,438 120.58 0.0290
2025-02-14 2024-12-31 13F NISOURCE COM 65473P105 141,075 -87,920 -38.39 5,186 -34.65 0.0136
2024-11-14 2024-09-30 13F NISOURCE COM 65473P105 228,995 160,208 232.90 7,935 300.50 0.0207
2024-08-14 2024-06-30 13F NISOURCE COM 65473P105 68,787 56,050 440.06 1,982 462.78 0.0050
2024-05-15 2024-03-31 13F NISOURCE COM 65473P105 12,737 352 -66.06 0.0009
2023-11-14 2023-09-30 13F NISOURCE COM 65473P105 1,037 -87.54 0.0032
2023-05-15 2023-03-31 13F NISOURCE COM 65473P105 8,324 40.82 0.0296
2023-02-14 2022-12-31 13F NISOURCE COM 65473P105 215,576 -128,141 -37.28 5,911 -31.73 0.0212
2022-11-14 2022-09-30 13F NISOURCE COM 65473P105 343,717 8,658 -6.89 0.0402
2022-08-15 2022-06-30 13F NISOURCE COM 65473P105 9,299 -31.83 0.0394
2022-05-16 2022-03-31 13F NISOURCE COM 65473P105 428,920 260,059 154.01 13,640 192.58 0.0474
2022-02-14 2021-12-31 13F NISOURCE COM 65473P105 168,861 -50,620 -23.06 4,662 -12.35 0.0150
2021-11-15 2021-09-30 13F NISOURCE COM 65473P105 219,481 -142,321 -39.34 5,319 -39.99 0.0187
2021-08-16 2021-06-30 13F NISOURCE COM 65473P105 361,802 257,696 247.53 8,864 253.15 0.0312
2021-05-17 2021-03-31 13F NISOURCE COM 65473P105 104,106 89,937 634.74 2,510 672.31 0.0110
2021-02-16 2020-12-31 13F NISOURCE COM 65473P105 14,169 14,169 325 0.0014
2020-08-14 2020-06-30 13F NISOURCE COM 65473P105 0 -30,226 -100.00 0 -100.00
2020-05-15 2020-03-31 13F NISOURCE COM 65473P105 30,226 30,226 755 0.0049
2019-08-14 2019-06-30 13F NISOURCE COM 65473P105 0 -19,666 -100.00 0 -100.00
2019-05-15 2019-03-31 13F NISOURCE COM 65473P105 19,666 19,666 564 0.0021
2019-02-14 2018-12-31 13F NISOURCE COM 65473P105 0 -25,473 -100.00 0 -100.00
2018-11-14 2018-09-30 13F NISOURCE COM 65473P105 25,473 25,473 635 0.0023
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.