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 $21.34B 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 $2.61B in its June 30, 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 $2.23B, representing an estimated loss of -14.49% since the filing period.
The top 10 institutional shareholders tracked on this page collectively account for approximately 50% of the total disclosed NI value among the investors covered in this analysis. Major shareholders include Blackrock, Inc., Vanguard Capital Management Llc, T. Rowe Price Investment Management, Inc., 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
879
Total Reported Value
$21.34B
Largest Holder
Blackrock, Inc.
Largest Position
$2.61B
Insider Transactions (90d)
2
Latest Filing Quarter
Q2 2026
New Institutional Positions
56
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% | 54,957,602 | $2,613,233,971 | $2,234,576,097 | -$378,657,874 | -14.49% | |
| Vanguard Capital Management Llc | 0.03% | 31,351,094 | $1,490,744,520 | $1,274,735,482 | -$216,009,038 | -14.49% | |
| T. Rowe Price Investment Management, Inc. | 0.93% | 29,835,011 | $1,418,655,000 | $1,213,091,547 | -$205,563,453 | -14.49% | |
| State Street Corp | 0.04% | 27,622,784 | $1,313,463,379 | $1,123,142,397 | -$190,320,982 | -14.49% | |
| Vanguard Portfolio Management Llc | 0.06% | 27,067,956 | $1,287,081,308 | $1,100,583,091 | -$186,498,217 | -14.49% | |
| Geode Capital Management, Llc | 0.03% | 12,920,034 | $611,923,633 | $525,328,582 | -$86,595,051 | -14.15% | |
| Deutsche Bank Ag\ | 0.17% | 12,077,706 | $574,294,920 | $491,079,526 | -$83,215,394 | -14.49% | |
| Fmr Llc | 0.02% | 10,170,078 | $483,587,186 | $413,515,371 | -$70,071,815 | -14.49% | |
| Jennison Associates Llc | 0.26% | 9,235,389 | $439,142,748 | $375,510,917 | -$63,631,831 | -14.49% | |
| Invesco Ltd. | 0.03% | 7,790,163 | $370,422,273 | $316,748,028 | -$53,674,245 | -14.49% | |
| Norges Bank | 0.04% | 7,789,733 | $370,401,804 | $316,730,544 | -$53,671,260 | -14.49% | |
| Jpmorgan Chase & Co | 0.02% | 6,963,215 | $335,278,863 | $283,124,322 | -$52,154,541 | -15.56% | |
| Morgan Stanley | 0.01% | 5,583,433 | $265,492,302 | $227,022,386 | -$38,469,916 | -14.49% | |
| Newport Trust Company, Llc | 0.62% | 5,416,323 | $257,546,159 | $220,227,693 | -$37,318,466 | -14.49% | |
| Pictet Asset Management Holding Sa | 0.23% | 5,001,382 | $237,815,714 | $203,356,192 | -$34,459,522 | -14.49% | |
| Cohen & Steers, Inc. | 0.37% | 4,943,589 | $235,068,000 | $201,006,329 | -$34,061,671 | -14.49% | |
| Charles Schwab Investment Management Inc | 0.03% | 4,515,728 | $214,722,866 | $183,609,500 | -$31,113,366 | -14.49% | |
| Soroban Capital Partners Lp | 1.51% | 4,493,353 | $213,658,935 | $182,699,733 | -$30,959,202 | -14.49% | |
| Northern Trust Corp | 0.02% | 4,422,988 | $210,313,081 | $179,838,692 | -$30,474,389 | -14.49% | |
| Goldman Sachs Group Inc | 0.02% | 4,346,417 | $206,672,117 | $176,725,315 | -$29,946,802 | -14.49% | |
| Zimmer Partners, Lp | 4.81% | 4,277,259 | $203,383,665 | $173,913,351 | -$29,470,314 | -14.49% | |
| Ubs Am, A Distinct Business Unit Of Ubs Asset Management Americas Llc | 0.04% | 4,198,668 | $195,909,848 | $170,717,841 | -$25,192,007 | -12.86% | |
| Reaves W H & Co Inc | 2.95% | 4,088,685 | $194,416,972 | $166,245,932 | -$28,171,040 | -14.49% | |
| Wellington Management Group Llp | 0.03% | 4,079,703 | $193,989,877 | $165,880,724 | -$28,109,153 | -14.49% | |
| Legal & General Group Plc | 0.04% | 3,782,091 | $179,838,429 | $153,779,820 | -$26,058,609 | -14.49% | |
| Citadel Advisors Llc | 0.10% | 3,715,541 | $176,673,975 | $151,073,897 | -$25,600,078 | -14.49% | |
| Bank Of America Corp | 0.01% | 3,628,102 | $172,516,272 | $147,518,627 | -$24,997,645 | -14.49% | |
| Balyasny Asset Management L.P. | 0.30% | 3,457,694 | $164,413,350 | $140,589,838 | -$23,823,512 | -14.49% | |
| Brookfield Corp | 0.21% | 3,451,951 | $164,140,270 | $140,356,328 | -$23,783,942 | -14.49% | |
| Barclays Plc | 0.05% | 3,378,846 | $160,664,127 | $137,383,878 | -$23,280,249 | -14.49% | |
| Alkeon Capital Management Llc | 0.62% | 3,365,500 | $160,029,525 | $136,841,230 | -$23,188,295 | -14.49% | |
| Nuveen, Llc | 0.04% | 3,248,805 | $154,480,676 | $132,096,411 | -$22,384,265 | -14.49% | |
| Duff & Phelps Investment Management Co | 1.39% | 3,097,280 | $147,275,663 | $125,935,405 | -$21,340,258 | -14.49% | |
| Bank Of New York Mellon Corp | 0.02% | 3,086,953 | $146,784,653 | $125,515,509 | -$21,269,144 | -14.49% | |
| Vanguard Fiduciary Trust Co | 0.03% | 2,692,879 | $128,046,396 | $109,492,460 | -$18,553,936 | -14.49% | |
| Dimensional Fund Advisors Lp | 0.02% | 2,607,612 | $124,004,697 | $106,025,504 | -$17,979,193 | -14.50% | |
| Royal Bank Of Canada | 0.02% | 2,554,222 | $121,454,000 | $103,854,667 | -$17,599,333 | -14.49% | |
| Aqr Capital Management Llc | 0.04% | 2,524,323 | $120,031,532 | $102,638,973 | -$17,392,559 | -14.49% | |
| Qube Research & Technologies Ltd | 0.13% | 2,496,134 | $118,691,172 | $101,492,808 | -$17,198,364 | -14.49% | |
| Antipodes Partners Ltd | 1.89% | 2,164,103 | $102,903,098 | $87,992,428 | -$14,910,670 | -14.49% | |
| Ubs Group Ag | 0.02% | 2,046,373 | $97,305,036 | $83,205,526 | -$14,099,510 | -14.49% | |
| Mizuho Markets Americas Llc | 1.71% | 2,007,300 | $95,447,115 | $81,616,818 | -$13,830,297 | -14.49% | |
| Pfa Pension, Forsikringsaktieselskab | 0.23% | 1,928,014 | $91,677,069 | $78,393,049 | -$13,284,020 | -14.49% | |
| Thrivent Financial For Lutherans | 0.15% | 1,881,948 | $89,487,000 | $76,520,006 | -$12,966,994 | -14.49% | |
| Massachusetts Financial Services Co | 0.03% | 1,860,744 | $88,478,378 | $75,657,851 | -$12,820,527 | -14.49% | |
| Ontario Teachers Pension Plan Board | 0.53% | 1,750,406 | $83,231,805 | $71,171,508 | -$12,060,297 | -14.49% | |
| Yaupon Capital Management Lp | 2.77% | 1,749,831 | $83,204,464 | $71,148,128 | -$12,056,336 | -14.49% | |
| Bank Of Montreal | 0.03% | 1,688,775 | $80,301,251 | $68,665,592 | -$11,635,660 | -14.49% | |
| Principal Financial Group Inc | 0.04% | 1,675,691 | $79,680,085 | $68,133,596 | -$11,546,489 | -14.49% | |
| Schroder Investment Management Group | 0.06% | 1,625,247 | $78,255,643 | $66,082,543 | -$12,173,100 | -15.56% |
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.