FIRST INTERSTATE BANCSYS-A (FIBK) Institutional Shareholders
FIRST INTERSTATE BANCSYS-A (FIBK) 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 $3.01B in FIBK holdings during the latest filing period.
Blackrock, Inc. is currently the largest disclosed institutional shareholder of FIBK tracked by InsiderSet, reporting ownership valued at approximately $450.21M 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 $513.16M, representing an estimated gain of +13.98% since the filing period.
The top 10 institutional shareholders tracked on this page collectively account for approximately 60% of the total disclosed FIBK value among the investors covered in this analysis. Major shareholders include Blackrock, Inc., State Street Corp, Dimensional Fund Advisors Lp, and several other long-term asset managers with concentrated positions in FIRST INTERSTATE BANCSYS-A (FIBK).
This page ranks the largest institutional FIBK 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
284
Total Reported Value
$3.01B
Largest Holder
Blackrock, Inc.
Largest Position
$450.21M
Insider Transactions (90d)
24
Latest Filing Quarter
Q2 2026
New Institutional Positions
53
Funds Exiting Positions
0
| Name | Investor/Manager | Portfolio % | Quantity | Reported Balance | Current Estimated Value | Gain/loss Since Filing | Estimated Portfolio Performance |
|---|---|---|---|---|---|---|---|
| Blackrock, Inc. | 0.01% | 13,479,487 | $450,214,861 | $513,164,070 | +$62,949,209 | +13.98% | |
| State Street Corp | 0.01% | 5,891,271 | $196,768,451 | $224,280,687 | +$27,512,236 | +13.98% | |
| Dimensional Fund Advisors Lp | 0.04% | 5,630,789 | $188,065,820 | $214,364,137 | +$26,298,317 | +13.98% | |
| Vanguard Portfolio Management Llc | 0.01% | 5,490,538 | $183,383,969 | $209,024,782 | +$25,640,813 | +13.98% | |
| First Interstate Bank | 9.28% | 4,614,432 | $177,932,498 | $175,671,426 | -$2,261,072 | -1.27% | |
| Holdco Asset Management, Lp | 9.82% | 3,950,107 | $131,933,574 | $150,380,573 | +$18,446,999 | +13.98% | |
| Wellington Management Group Llp | 0.02% | 3,882,437 | $129,673,394 | $147,804,377 | +$18,130,983 | +13.98% | |
| Fmr Llc | 0.01% | 3,877,196 | $129,498,352 | $147,604,852 | +$18,106,500 | +13.98% | |
| Vanguard Capital Management Llc | 0.00% | 3,855,814 | $128,784,188 | $146,790,839 | +$18,006,651 | +13.98% | |
| Capital International Investors | 0.02% | 2,290,572 | $76,505,105 | $87,202,076 | +$10,696,971 | +13.98% | |
| Geode Capital Management, Llc | 0.00% | 2,218,319 | $74,104,413 | $84,451,404 | +$10,346,991 | +13.96% | |
| Victory Capital Management Inc | 0.04% | 2,086,923 | $69,703,228 | $79,449,159 | +$9,745,931 | +13.98% | |
| Franklin Resources Inc | 0.02% | 1,881,246 | $62,833,617 | $71,619,035 | +$8,785,418 | +13.98% | |
| Bank Of America Corp | 0.00% | 1,778,094 | $59,388,340 | $67,692,039 | +$8,303,699 | +13.98% | |
| Ubs Group Ag | 0.01% | 1,756,292 | $58,660,152 | $66,862,036 | +$8,201,884 | +13.98% | |
| Nomura Asset Management International Inc. | 0.10% | 1,703,078 | $56,889,000 | $64,836,179 | +$7,947,179 | +13.97% | |
| Morgan Stanley | 0.00% | 1,514,150 | $50,572,643 | $57,643,691 | +$7,071,048 | +13.98% | |
| Massachusetts Financial Services Co | 0.01% | 1,209,484 | $46,637,703 | $46,045,056 | -$592,647 | -1.27% | |
| First Trust Advisors Lp | 0.03% | 1,197,557 | $39,998,403 | $45,590,995 | +$5,592,592 | +13.98% | |
| Charles Schwab Investment Management Inc | 0.01% | 1,183,384 | $39,525,026 | $45,051,429 | +$5,526,403 | +13.98% | |
| Capital World Investors | 0.01% | 1,146,394 | $38,289,560 | $43,643,220 | +$5,353,660 | +13.98% | |
| Bank Of New York Mellon Corp | 0.01% | 976,166 | $32,603,938 | $37,162,640 | +$4,558,702 | +13.98% | |
| Cramer Rosenthal Mcglynn Llc | 2.24% | 914,214 | $30,534,748 | $34,804,127 | +$4,269,379 | +13.98% | |
| Northern Trust Corp | 0.00% | 881,344 | $29,436,890 | $33,552,766 | +$4,115,876 | +13.98% | |
| Millennium Management Llc | 0.02% | 781,127 | $26,089,642 | $29,737,505 | +$3,647,863 | +13.98% | |
| Punch & Associates Investment Management, Inc. | 1.42% | 735,419 | $24,562,993 | $27,997,401 | +$3,434,408 | +13.98% | |
| Leeward Investments, Llc - Ma | 1.08% | 618,416 | $23,846,121 | $23,543,097 | -$303,024 | -1.27% | |
| Goldman Sachs Group Inc | 0.00% | 705,806 | $23,573,925 | $26,870,034 | +$3,296,109 | +13.98% | |
| Villere St Denis J & Co Llc | 2.31% | 627,031 | $20,942,835 | $23,871,070 | +$2,928,235 | +13.98% | |
| Vanguard Fiduciary Trust Co | 0.00% | 567,806 | $18,964,720 | $21,616,374 | +$2,651,654 | +13.98% | |
| Davidson Investment Advisors | 0.75% | 478,878 | $18,465,549 | $18,230,885 | -$234,664 | -1.27% | |
| Principal Financial Group Inc | 0.01% | 408,613 | $15,756,118 | $15,555,897 | -$200,221 | -1.27% | |
| Sei Investments Co | 0.01% | 465,495 | $15,547,670 | $17,721,395 | +$2,173,725 | +13.98% | |
| Aristotle Capital Boston, Llc | 0.87% | 418,256 | $13,975,574 | $15,923,006 | +$1,947,432 | +13.93% | |
| Invesco Ltd. | 0.00% | 329,805 | $11,015,487 | $12,555,676 | +$1,540,189 | +13.98% | |
| Raymond James Financial Inc | 0.00% | 331,534 | $10,886,015 | $12,621,499 | +$1,735,484 | +15.94% | |
| North Reef Capital Management Lp | 0.37% | 325,157 | $10,860,244 | $12,378,727 | +$1,518,483 | +13.98% | |
| Public Sector Pension Investment Board | 0.03% | 314,722 | $10,511,715 | $11,981,467 | +$1,469,752 | +13.98% | |
| Fisher Asset Management, Llc | 0.00% | 265,538 | $10,239,167 | $10,109,032 | -$130,135 | -1.27% | |
| Nuveen, Llc | 0.00% | 299,683 | $10,009,412 | $11,408,932 | +$1,399,520 | +13.98% | |
| Cambria Investment Management, L.P. | 0.52% | 276,842 | $9,246,523 | $10,539,375 | +$1,292,852 | +13.98% | |
| Rhumbline Advisers | 0.01% | 246,916 | $8,246,980 | $9,400,092 | +$1,153,112 | +13.98% | |
| Legal & General Group Plc | 0.00% | 203,907 | $6,810,493 | $7,762,739 | +$952,246 | +13.98% | |
| Creative Planning | 0.00% | 199,598 | $6,666,576 | $7,598,696 | +$932,120 | +13.98% | |
| Moody Aldrich Partners Llc | 1.18% | 170,347 | $6,568,580 | $6,485,110 | -$83,470 | -1.27% | |
| Citigroup Inc | 0.00% | 162,386 | $6,261,605 | $6,182,035 | -$79,570 | -1.27% | |
| Ubs Am, A Distinct Business Unit Of Ubs Asset Management Americas Llc | 0.00% | 179,957 | $6,010,563 | $6,850,963 | +$840,400 | +13.98% | |
| Swiss National Bank | 0.00% | 173,046 | $5,779,736 | $6,587,861 | +$808,125 | +13.98% | |
| Granite Investment Partners, Llc | 0.35% | 172,335 | $5,755,989 | $6,560,793 | +$804,804 | +13.98% | |
| Ameriprise Financial Inc | 0.00% | 165,641 | $5,532,409 | $6,305,953 | +$773,544 | +13.98% |
Frequently asked questions about FIBK
Who owns the most FIBK stock?
The largest holders of FIBK 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 FIRST INTERSTATE BANCSYS-A (FIBK).
Is FIBK widely held by superinvestors?
Many widely followed stocks like FIBK appear across numerous superinvestor portfolios because of liquidity, index inclusion, and fundamentals. The holder count and table above show how broadly FIBK 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.