NiSource Inc.
US ˙ NYSE ˙ US65473P1057

SecurityNI / NiSource Inc.
InstitutionAdvisor Group Holdings, Inc.
Latest Disclosed Ownership91,339 shares
Latest Disclosed Value $ 4,262,241
Advisor Group Holdings, Inc. reports 11.72% decrease in ownership of NI / NiSource Inc.

On May 15, 2026 - Advisor Group Holdings, Inc. filed a 13F-HR form disclosing ownership of 91,339 shares of NiSource Inc. (US:NI) valued at $4,261,878 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 103,466 shares of NiSource Inc.. This represents a change in shares of -11.72% during the quarter. The current value of the position is $4,257,311 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.

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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 91,339 -12,127 -11.72 4,262 -1.37 0.0036
2026-02-17 2025-12-31 13F NISOURCE COM 65473P105 103,466 -34,629 -25.08 4,321 -27.10 0.0063
2025-11-14 2025-09-30 13F NISOURCE COM 65473P105 138,095 -12,676 -8.41 5,927 -2.23 0.0083
2025-09-04 2025-06-30 13F/A-1 ISOURCE COM 65473P105 150,771 95,233 171.47 6,063 172.33 0.0108
2025-08-13 2025-06-30 13F ISOURCE COM 65473P105 131,642 76,104 5,132 0.0059
2025-05-12 2025-03-31 13F NISOURCE COM 65473P105 55,538 -47,982 -46.35 2,227 -37.24 0.0050
2025-06-06 2024-12-31 13F/A-1 NISOURCE COM 65473P105 103,520 7,965 8.34 3,548 7.13 0.0080
2025-02-07 2024-12-31 13F NISOURCE COM 65473P105 98,730 3,175 3,288 0.0084
2024-11-13 2024-09-30 13F NISOURCE COM 65473P105 95,555 -6,629 -6.49 3,311 12.47 0.0075
2024-08-13 2024-06-30 13F NISOURCE COM 65473P105 102,184 -5,195 -4.84 2,944 -0.88 0.0070
2024-05-10 2024-03-31 13F NISOURCE COM 65473P105 107,379 -104,480 -49.32 2,970 -47.20 0.0066
2024-02-12 2023-12-31 13F NISOURCE COM 65473P105 211,859 43,080 25.52 5,625 35.05 0.0098
2023-11-13 2023-09-30 13F NISOURCE COM 65473P105 168,779 64,285 61.52 4,166 45.78 0.0062
2023-08-21 2023-06-30 13F/A-1 NISOURCE COM 65473P105 104,494 30,519 41.26 2,858 38.09 0.0051
2023-08-10 2023-06-30 13F NISOURCE COM 65473P105 471,998 398,023 2,490 0.0007
2023-05-12 2023-03-31 13F NISOURCE COM 65473P105 73,975 -781 -1.04 2,069 0.93 0.0039
2023-02-10 2022-12-31 13F NISOURCE COM 65473P105 74,756 15,835 26.87 2,051 38.14 0.0042
2022-11-14 2022-09-30 13F NISOURCE COM 65473P105 58,921 3,610 6.53 1,484 -9.12 0.0034
2022-08-10 2022-06-30 13F NISOURCE COM 65473P105 55,311 19,178 53.08 1,633 26.49 0.0036
2022-05-04 2022-03-31 13F NISOURCE COM 65473P105 36,133 -10,233 -22.07 1,291 0.78 0.0025
2022-02-03 2021-12-31 13F NISOURCE COM 65473P105 46,366 1,250 2.77 1,281 17.09 0.0024
2021-11-05 2021-09-30 13F NISOURCE COM 65473P105 45,116 278 0.62 1,094 -0.64 0.0023
2021-08-02 2021-06-30 13F NISOURCE COM 65473P105 44,838 23,476 109.90 1,101 113.37 0.0024
2021-05-13 2021-03-31 13F NISOURCE COM 65473P105 21,362 -5,829 -21.44 516 -16.91 0.0012
2021-02-10 2020-12-31 13F NISOURCE COM 65473P105 27,191 -2,658 -8.90 621 -5.91 0.0017
2020-11-12 2020-09-30 13F NISOURCE COM 65473P105 29,849 2,029 7.29 660 4.27 0.0020
2020-08-14 2020-06-30 13F NISOURCE COM 65473P105 27,820 -12,058 -30.24 633 -10.47 0.0021
2020-05-18 2020-03-31 13F NISOURCE COM 65473P105 39,878 39,878 707 0.0029
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.