NISOURCE INC (NI) Institutional Shareholders
NISOURCE INC (NI) is currently reported in institutional portfolios tracked by InsiderSet based on the latest available SEC Form 13F filings for the quarter ended June 30, 2026. The institutional investors covered on this page collectively reported approximately $17.71B in NI holdings during the latest filing period.
Blackrock, Inc. is currently the largest disclosed institutional shareholder of NI tracked by InsiderSet, reporting ownership valued at approximately $2.40B in its March 31, 2026 SEC Form 13F filing. Based on current market prices and the latest disclosed share count, the position is now estimated to be worth approximately $2.29B, representing an estimated loss of -4.78% since the filing period.
The top 10 institutional shareholders tracked on this page collectively account for approximately 51% of the total disclosed NI value among the investors covered in this analysis. Major shareholders include Blackrock, Inc., Vanguard Capital Management Llc, State Street Corp, and several other long-term asset managers with concentrated positions in NISOURCE INC (NI).
This page ranks the largest institutional NI shareholders using publicly disclosed SEC Form 13F data, including reported values, estimated current holding values, portfolio allocation percentages, ownership concentration metrics, and historical holding changes across major hedge funds and investment firms.
Institutional Holders
862
Total Reported Value
$17.71B
Largest Holder
Blackrock, Inc.
Largest Position
$2.40B
Insider Transactions (90d)
5
Latest Filing Quarter
Q2 2026
New Institutional Positions
34
Funds Exiting Positions
0
| Name | Investor/Manager | Portfolio % | Quantity | Reported Balance | Current Estimated Value | Gain/loss Since Filing | Estimated Portfolio Performance |
|---|---|---|---|---|---|---|---|
| Blackrock, Inc. | 0.04% | 51,474,846 | $2,401,816,313 | $2,287,027,408 | -$114,788,905 | -4.78% | |
| Vanguard Capital Management Llc | 0.04% | 31,142,795 | $1,453,122,815 | $1,383,674,382 | -$69,448,433 | -4.78% | |
| State Street Corp | 0.04% | 27,102,422 | $1,264,599,011 | $1,204,160,609 | -$60,438,402 | -4.78% | |
| Vanguard Portfolio Management Llc | 0.07% | 26,980,955 | $1,258,931,360 | $1,198,763,831 | -$60,167,529 | -4.78% | |
| Geode Capital Management, Llc | 0.04% | 12,613,176 | $586,259,413 | $560,403,410 | -$25,856,003 | -4.41% | |
| Deutsche Bank Ag\ | 0.18% | 11,718,076 | $546,765,425 | $520,634,117 | -$26,131,308 | -4.78% | |
| Fmr Llc | 0.02% | 9,224,153 | $430,398,944 | $409,829,118 | -$20,569,826 | -4.78% | |
| Jennison Associates Llc | 0.30% | 9,221,560 | $430,277,989 | $409,713,911 | -$20,564,078 | -4.78% | |
| Invesco Ltd. | 0.06% | 7,791,627 | $363,557,327 | $346,181,988 | -$17,375,339 | -4.78% | |
| Franklin Resources Inc | 0.07% | 5,986,389 | $279,324,911 | $265,975,263 | -$13,349,648 | -4.78% | |
| Ubs Group Ag | 0.05% | 5,873,793 | $274,071,182 | $260,972,623 | -$13,098,559 | -4.78% | |
| Newport Trust Company, Llc | 0.64% | 5,597,232 | $261,166,845 | $248,685,018 | -$12,481,827 | -4.78% | |
| Morgan Stanley | 0.02% | 5,481,383 | $255,761,407 | $243,537,847 | -$12,223,560 | -4.78% | |
| Zimmer Partners, Lp | 5.89% | 5,142,959 | $239,970,467 | $228,501,668 | -$11,468,799 | -4.78% | |
| Pictet Asset Management Holding Sa | 0.23% | 5,001,382 | $237,815,714 | $222,211,402 | -$15,604,312 | -6.56% | |
| Wellington Management Group Llp | 0.04% | 4,532,929 | $211,506,466 | $201,398,035 | -$10,108,431 | -4.78% | |
| Soroban Capital Partners Lp | 1.50% | 4,493,353 | $209,659,851 | $199,639,674 | -$10,020,177 | -4.78% | |
| Charles Schwab Investment Management Inc | 0.03% | 4,472,631 | $208,692,962 | $198,718,995 | -$9,973,967 | -4.78% | |
| Northern Trust Corp | 0.03% | 4,254,931 | $198,535,079 | $189,046,584 | -$9,488,495 | -4.78% | |
| Ubs Am, A Distinct Business Unit Of Ubs Asset Management Americas Llc | 0.04% | 4,198,668 | $195,909,848 | $186,546,819 | -$9,363,029 | -4.78% | |
| Reaves W H & Co Inc | 2.95% | 4,088,685 | $194,416,972 | $181,660,275 | -$12,756,697 | -6.56% | |
| Goldman Sachs Group Inc | 0.02% | 3,890,683 | $181,539,292 | $172,863,046 | -$8,676,246 | -4.78% | |
| Legal & General Group Plc | 0.04% | 3,874,791 | $180,797,744 | $172,156,964 | -$8,640,780 | -4.78% | |
| Brookfield Corp | 0.23% | 3,680,202 | $171,718,225 | $163,511,375 | -$8,206,850 | -4.78% | |
| Barclays Plc | 0.06% | 3,491,513 | $162,913,996 | $155,127,923 | -$7,786,073 | -4.78% | |
| Bank Of Montreal | 0.06% | 3,393,371 | $158,334,709 | $150,767,474 | -$7,567,235 | -4.78% | |
| Alkeon Capital Management Llc | 0.71% | 3,365,500 | $157,034,230 | $149,529,165 | -$7,505,065 | -4.78% | |
| Bank Of New York Mellon Corp | 0.03% | 3,129,230 | $146,009,894 | $139,031,689 | -$6,978,205 | -4.78% | |
| Duff & Phelps Investment Management Co | 1.51% | 3,106,640 | $144,955,822 | $138,028,015 | -$6,927,807 | -4.78% | |
| Bank Of America Corp | 0.01% | 3,087,159 | $144,046,839 | $137,162,474 | -$6,884,365 | -4.78% | |
| Royal Bank Of Canada | 0.02% | 2,776,375 | $129,546,000 | $123,354,341 | -$6,191,659 | -4.78% | |
| Vanguard Fiduciary Trust Co | 0.03% | 2,695,544 | $125,774,083 | $119,763,020 | -$6,011,063 | -4.78% | |
| Dimensional Fund Advisors Lp | 0.02% | 2,558,354 | $119,371,526 | $113,667,668 | -$5,703,858 | -4.78% | |
| Pfa Pension, Forsikringsaktieselskab | 0.34% | 2,400,019 | $111,984,875 | $106,632,844 | -$5,352,031 | -4.78% | |
| Nuveen, Llc | 0.03% | 2,220,405 | $103,604,097 | $98,652,594 | -$4,951,503 | -4.78% | |
| Antipodes Partners Ltd | 1.88% | 2,097,998 | $97,892,587 | $93,214,051 | -$4,678,536 | -4.78% | |
| Mizuho Markets Americas Llc | 1.71% | 2,007,300 | $95,447,115 | $89,184,339 | -$6,262,776 | -6.56% | |
| Massachusetts Financial Services Co | 0.03% | 1,879,575 | $87,700,970 | $83,509,517 | -$4,191,453 | -4.78% | |
| Principal Financial Group Inc | 0.04% | 1,713,756 | $79,965,756 | $76,142,179 | -$3,823,577 | -4.78% | |
| Aqr Capital Management Llc | 0.03% | 1,616,147 | $75,118,491 | $71,805,411 | -$3,313,080 | -4.41% | |
| Ameriprise Financial Inc | 0.02% | 1,539,088 | $71,814,762 | $68,381,680 | -$3,433,082 | -4.78% | |
| Aviva Plc | 0.12% | 1,525,662 | $71,187,389 | $67,785,163 | -$3,402,226 | -4.78% | |
| Td Asset Management Inc | 0.06% | 1,455,898 | $67,932,201 | $64,685,548 | -$3,246,653 | -4.78% | |
| First Trust Advisors Lp | 0.05% | 1,437,423 | $67,070,157 | $63,864,704 | -$3,205,453 | -4.78% | |
| Swiss National Bank | 0.04% | 1,400,500 | $65,347,330 | $62,224,215 | -$3,123,115 | -4.78% | |
| Yaupon Capital Management Lp | 2.86% | 1,242,895 | $57,993,481 | $55,221,825 | -$2,771,656 | -4.78% | |
| Manufacturers Life Insurance Company, The | 0.05% | 1,213,933 | $56,642,114 | $53,935,043 | -$2,707,071 | -4.78% | |
| Eventide Asset Management, Llc | 0.88% | 1,143,590 | $53,348,805 | $50,809,704 | -$2,539,101 | -4.76% | |
| Bnp Paribas Financial Markets | 0.03% | 1,132,144 | $52,825,839 | $50,301,158 | -$2,524,681 | -4.78% | |
| Adage Capital Partners Gp, L.L.C. | 0.08% | 1,129,962 | $52,724,027 | $50,204,212 | -$2,519,815 | -4.78% |
Frequently asked questions about NI
Who owns the most NI stock?
The largest holders of NI are typically major institutional investors such as asset managers and hedge funds reporting on Form 13F. The table above ranks tracked superinvestors by reported position size using the latest available filings for NISOURCE INC (NI).
Is NI widely held by superinvestors?
Many widely followed stocks like NI appear across numerous superinvestor portfolios because of liquidity, index inclusion, and fundamentals. The holder count and table above show how broadly NI is represented among the institutional managers we track.
What do “Current Estimated Value”, “Gain/loss Since Filing”, and “Estimated Portfolio Performance” mean?
Current Estimated Value is reported share quantity from the latest 13F times our most recent split-adjusted U.S. session close. Gain/loss Since Filing is that estimate minus the reported 13F dollar value; Estimated Portfolio Performance is that difference as a percent of the reported value. Green means the estimate is above the filing value; red means below (not purchase cost). If many filers share the same implied filing price per share, the performance % may match across rows. These are not official fund marks or live quotes.