Who owns First Interstate BancSystem (FIBK)
Which tracked institutional funds hold FIBK, how they are positioned, and who is buying versus exiting — from SEC Form 13F-HR filings. See FIBK company fundamentals →
Ownership as of the 2026-Q2 13F filings (latest filed 2026-09-22). 13F is disclosed up to 45 days after quarter-end, so the most recent quarter fills in over the following weeks.
How the tape is positioned
93 tracked funds added or opened FIBK while 44 trimmed or exited it between 2026-Q1 and 2026-Q2 — the tape is split. When large holders disagree on a name, the funds moving first are sometimes ahead of the story.
A prompt to read the filings, not a verdict. 13F is a quarter-end snapshot disclosed up to 45 days late; a fund adds or exits for mandate, benchmark, and timing reasons that have nothing to do with a view on the stock. This is a starting question, not a signal to trade.
Conviction spread
FIBK’s largest tracked holder by dollar value, BlackRock, Inc., sizes it at 0.0% of its own reported 13F book, while the median holder sizes it at 0.0% of theirs — a 0.0pp conviction gap — its largest holder concentrates the name more heavily than the typical one.
Book-share is each fund’s reported value in FIBK divided by its whole reported 13F book, so it is comparable across funds of different sizes and is unaffected by stock splits. A higher share means a fund has committed more of its book to the name — a starting question about conviction, not a verdict or a signal to trade.
Institutional & insider positioning
Between 2026-Q1 and 2026-Q2, across 276 tracked filers holding FIBK, 140 increased or opened the position and 139 reduced or closed it; over the same quarter, open-market insider Form 4s were net sales.
This fuses two public signals for the same quarter — how tracked institutions changed their positions and whether insiders bought or sold in the open market. It describes what was filed; it is a starting question, not a verdict or a signal to trade.
New buyers & exits
Funds opening or closing a position in FIBK between the 2026-Q1 and 2026-Q2 13F filings, and the largest changes among funds holding it in both. New buyers and exits are counted on fund presence (split-invariant); adds and trims are measured on reported value.
New buyers 12
- D. E. Shaw & Co., Inc.$18M
- Qube Research & Technologies Ltd$4M
- ExodusPoint Capital Management, LP$3M
- Brevan Howard Capital Management LP$2M
- Bridgewater Associates, LP$2M
- HUSSMAN STRATEGIC ADVISORS, INC.$2M
Full exits 26
- JENNISON ASSOCIATES LLC$20M
- North Reef Capital Management LP$11M
- HARBOR CAPITAL ADVISORS, INC.$7M
- BESSEMER GROUP INC$5M
- SG Americas Securities, LLC$4M
- TEACHERS RETIREMENT SYSTEM OF THE STATE OF KENTUCKY$3M
Largest adds
- BlackRock, Inc.$217M
- STATE STREET CORP$44M
- DIMENSIONAL FUND ADVISORS LP$35M
- VANGUARD PORTFOLIO MANAGEMENT LLC$29M
- First Interstate Bank$23M
- NOMURA ASSET MANAGEMENT INTERNATIONAL INC.$21M
Largest trims
- FMR LLC$34M
- UBS Group AG$18M
- RAYMOND JAMES FINANCIAL INC$11M
- FRANKLIN RESOURCES INC$8M
- SEI INVESTMENTS CO$5M
- BANK OF AMERICA CORP /DE/$3M
Institutional holders
One row per tracked fund, most shares held first (every row is from one quarter; reported value breaks ties). “% of value” is the fund’s share of this security’s tracked institutional value — not of shares outstanding.
| Fund | Shares | Reported value | % of value | Quarter |
|---|---|---|---|---|
| BlackRock, Inc. added | 13,732,702 | $530M | 15.5% | 2026-Q2 |
| STATE STREET CORP added | 6,250,817 | $241M | 7.1% | 2026-Q2 |
| DIMENSIONAL FUND ADVISORS LP added | 5,783,231 | $223M | 6.5% | 2026-Q2 |
| VANGUARD PORTFOLIO MANAGEMENT LLC added | 5,506,456 | $212M | 6.2% | 2026-Q2 |
| First Interstate Bank trimmed | 4,614,432 | $178M | 5.2% | 2026-Q2 |
| HoldCo Asset Management, LP | 3,950,107 | $152M | 4.5% | 2026-Q2 |
| WELLINGTON MANAGEMENT GROUP LLP trimmed | 3,768,343 | $145M | 4.3% | 2026-Q2 |
| VANGUARD CAPITAL MANAGEMENT LLC trimmed | 3,738,371 | $144M | 4.2% | 2026-Q2 |
| FMR LLC trimmed | 2,463,971 | $95M | 2.8% | 2026-Q2 |
| GEODE CAPITAL MANAGEMENT, LLC added | 2,387,561 | $92M | 2.7% | 2026-Q2 |
| Capital International Investors added | 2,341,826 | $90M | 2.6% | 2026-Q2 |
| VICTORY CAPITAL MANAGEMENT INC added | 2,149,403 | $83M | 2.4% | 2026-Q2 |
| NOMURA ASSET MANAGEMENT INTERNATIONAL INC. added | 2,018,138 | $78M | 2.3% | 2026-Q2 |
| MORGAN STANLEY added | 1,639,233 | $63M | 1.9% | 2026-Q2 |
| BANK OF AMERICA CORP /DE/ trimmed | 1,462,281 | $56M | 1.7% | 2026-Q2 |
| FRANKLIN RESOURCES INC trimmed | 1,427,500 | $55M | 1.6% | 2026-Q2 |
| JPMORGAN CHASE & CO trimmed | 1,405,780 | $54M | 1.6% | 2026-Q2 |
| FIRST TRUST ADVISORS LP added | 1,313,141 | $51M | 1.5% | 2026-Q2 |
| MASSACHUSETTS FINANCIAL SERVICES CO /MA/ trimmed | 1,209,484 | $47M | 1.4% | 2026-Q2 |
| Capital World Investors added | 1,178,546 | $45M | 1.3% | 2026-Q2 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC trimmed | 1,168,761 | $45M | 1.3% | 2026-Q2 |
| UBS Group AG trimmed | 1,057,053 | $41M | 1.2% | 2026-Q2 |
| CRAMER ROSENTHAL MCGLYNN LLC added | 1,034,043 | $40M | 1.2% | 2026-Q2 |
| Bank of New York Mellon Corp added | 1,002,675 | $39M | 1.1% | 2026-Q2 |
| NORGES BANK added | 978,151 | $38M | 1.1% | 2026-Q2 |
| NORTHERN TRUST CORP added | 978,127 | $38M | 1.1% | 2026-Q2 |
| PUNCH & ASSOCIATES INVESTMENT MANAGEMENT, INC. added | 778,006 | $30M | 0.9% | 2026-Q2 |
| GOLDMAN SACHS GROUP INC added | 753,537 | $29M | 0.9% | 2026-Q2 |
| MILLENNIUM MANAGEMENT LLC trimmed | 638,735 | $25M | 0.7% | 2026-Q2 |
| Leeward Investments, LLC - MA trimmed | 618,416 | $24M | 0.7% | 2026-Q2 |
| VILLERE ST DENIS J & CO LLC trimmed | 567,701 | $22M | 0.6% | 2026-Q2 |
| VANGUARD FIDUCIARY TRUST CO trimmed | 562,670 | $22M | 0.6% | 2026-Q2 |
| DAVIDSON INVESTMENT ADVISORS added | 478,878 | $18M | 0.5% | 2026-Q2 |
| Invesco Ltd. added | 474,951 | $18M | 0.5% | 2026-Q2 |
| D. E. Shaw & Co., Inc. added | 463,086 | $18M | 0.5% | 2026-Q2 |
| PRINCIPAL FINANCIAL GROUP INC trimmed | 408,613 | $16M | 0.5% | 2026-Q2 |
| TWO SIGMA INVESTMENTS, LP added | 396,596 | $15M | 0.4% | 2026-Q2 |
| Aristotle Capital Boston, LLC trimmed | 348,476 | $13M | 0.4% | 2026-Q2 |
| Nuveen, LLC added | 323,328 | $12M | 0.4% | 2026-Q2 |
| Public Sector Pension Investment Board trimmed | 290,375 | $11M | 0.3% | 2026-Q2 |
| Creative Planning added | 287,738 | $11M | 0.3% | 2026-Q2 |
| SEI INVESTMENTS CO trimmed | 283,210 | $11M | 0.3% | 2026-Q2 |
| Fisher Asset Management, LLC trimmed | 265,538 | $10M | 0.3% | 2026-Q2 |
| Cambria Investment Management, L.P. trimmed | 254,704 | $10M | 0.3% | 2026-Q2 |
| RHUMBLINE ADVISERS trimmed | 225,315 | $9M | 0.3% | 2026-Q2 |
| Numerai GP LLC added | 213,407 | $8M | 0.2% | 2026-Q2 |
| Legal & General Group Plc trimmed | 200,880 | $8M | 0.2% | 2026-Q2 |
| AQR CAPITAL MANAGEMENT LLC added | 195,222 | $8M | 0.2% | 2026-Q2 |
| SUSQUEHANNA FUNDAMENTAL INVESTMENTS, LLC added | 190,823 | $7M | 0.2% | 2026-Q2 |
| CITADEL ADVISORS LLC added | 175,090 | $7M | 0.2% | 2026-Q2 |
| Granite Investment Partners, LLC added | 174,428 | $7M | 0.2% | 2026-Q2 |
| Moody Aldrich Partners LLC | 170,347 | $7M | 0.2% | 2026-Q2 |
| AMERICAN CENTURY COMPANIES INC added | 166,967 | $6M | 0.2% | 2026-Q2 |
| Swiss National Bank trimmed | 166,046 | $6M | 0.2% | 2026-Q2 |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC trimmed | 163,237 | $6M | 0.2% | 2026-Q2 |
| CITIGROUP INC added | 162,386 | $6M | 0.2% | 2026-Q2 |
| AMERIPRISE FINANCIAL INC trimmed | 150,404 | $6M | 0.2% | 2026-Q2 |
| KENNEDY CAPITAL MANAGEMENT LLC added | 148,554 | $6M | 0.2% | 2026-Q2 |
| GREAT LAKES ADVISORS, LLC trimmed | 146,228 | $6M | 0.2% | 2026-Q2 |
| WELLS FARGO & COMPANY/MN added | 130,151 | $5M | 0.1% | 2026-Q2 |
| STIFEL FINANCIAL CORP added | 125,812 | $5M | 0.1% | 2026-Q2 |
| Squarepoint Ops LLC added | 124,773 | $5M | 0.1% | 2026-Q2 |
| BNP PARIBAS FINANCIAL MARKETS added | 120,993 | $5M | 0.1% | 2026-Q2 |
| PRICE T ROWE ASSOCIATES INC /MD/ added | 118,482 | $5M | 0.1% | 2026-Q2 |
| Universal- Beteiligungs- und Servicegesellschaft mbH added | 111,923 | $4M | 0.1% | 2026-Q2 |
| ALLIANCEBERNSTEIN L.P. added | 107,173 | $4M | 0.1% | 2026-Q2 |
| DEUTSCHE BANK AG\ added | 102,340 | $4M | 0.1% | 2026-Q2 |
| Vestmark Advisory Solutions, Inc. added | 101,844 | $4M | 0.1% | 2026-Q2 |
| RICE HALL JAMES & ASSOCIATES, LLC trimmed | 99,913 | $4M | 0.1% | 2026-Q2 |
| Jump Financial, LLC added | 96,822 | $4M | 0.1% | 2026-Q2 |
| Qube Research & Technologies Ltd added | 95,526 | $4M | 0.1% | 2026-Q2 |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM trimmed | 95,236 | $4M | 0.1% | 2026-Q2 |
| Russell Investments Group, Ltd. added | 94,239 | $4M | 0.1% | 2026-Q2 |
| Rafferty Asset Management, LLC trimmed | 93,834 | $4M | 0.1% | 2026-Q2 |
| PRUDENTIAL FINANCIAL INC trimmed | 88,830 | $3M | 0.1% | 2026-Q2 |
| VANGUARD ASSET MANAGEMENT, Ltd added | 88,170 | $3M | 0.1% | 2026-Q2 |
| Phocas Financial Corp. trimmed | 87,228 | $3M | 0.1% | 2026-Q2 |
| Cladis Investment Advisory, LLC trimmed | 83,865 | $3M | 0.1% | 2026-Q2 |
| Ashton Thomas Private Wealth, LLC trimmed | 77,159 | $3M | 0.1% | 2026-Q2 |
| BARCLAYS PLC trimmed | 76,890 | $3M | 0.1% | 2026-Q2 |
| NFJ INVESTMENT GROUP, LLC | 73,862 | $3M | 0.1% | 2026-Q2 |
| ExodusPoint Capital Management, LP trimmed | 72,582 | $3M | 0.1% | 2026-Q2 |
| STATE BOARD OF ADMINISTRATION OF FLORIDA RETIREMENT SYSTEM trimmed | 66,731 | $3M | 0.1% | 2026-Q2 |
| LPL Financial LLC trimmed | 61,822 | $2M | 0.1% | 2026-Q2 |
| Brevan Howard Capital Management LP new | 61,210 | $2M | 0.1% | 2026-Q2 |
| State of New Jersey Common Pension Fund D trimmed | 59,988 | $2M | 0.1% | 2026-Q2 |
| Connor, Clark & Lunn Investment Management Ltd. trimmed | 59,664 | $2M | 0.1% | 2026-Q2 |
| Vest Financial, LLC added | 55,520 | $2M | 0.1% | 2026-Q2 |
| Allspring Global Investments Holdings, LLC added | 55,218 | $2M | 0.1% | 2026-Q2 |
| MetLife Investment Management, LLC added | 53,435 | $2M | 0.1% | 2026-Q2 |
| Cypress Capital Management LLC (WY) trimmed | 52,108 | $2M | 0.1% | 2026-Q2 |
| Northern Capital Management, Inc. trimmed | 51,336 | $2M | 0.1% | 2026-Q2 |
| Man Group plc trimmed | 50,993 | $2M | 0.1% | 2026-Q2 |
| NEW YORK STATE COMMON RETIREMENT FUND added | 48,248 | $2M | 0.1% | 2026-Q2 |
| MANUFACTURERS LIFE INSURANCE COMPANY, THE added | 46,055 | $2M | 0.1% | 2026-Q2 |
| Illinois Municipal Retirement Fund trimmed | 45,679 | $2M | 0.1% | 2026-Q2 |
| Bridgewater Associates, LP trimmed | 44,810 | $2M | 0.1% | 2026-Q2 |
| HSBC HOLDINGS PLC trimmed | 44,496 | $2M | 0.0% | 2026-Q2 |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 43,598 | $2M | 0.0% | 2026-Q2 |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. added | 42,297 | $2M | 0.0% | 2026-Q2 |
Ownership over time
Tracked institutional holder count and total shares held by filing quarter (independent scales). The curated-era tail and any mid-ingest latest quarter are handled honestly — a partial quarter is not drawn as a collapse.
Reading this table
Funds hold the same stock for different reasons — an index fund “holds” almost everything, an active manager sizes a name to a mandate and a benchmark, and each fund entered at its own price and time. Because 13F is filed up to 45 days after quarter-end, every row is a backward-looking snapshot; a manager may have traded since. Share-class siblings (a company’s A and C shares) are rolled up to one line so a dual-class name is never double-counted. Compare like-for-like. A large holder is not an endorsement, and a fund exiting is not a warning — this is a starting question, not a verdict.
About 13F filings
A Form 13F is a quarterly disclosure that institutional investment managers with over $100 million in US-listed equities must file with the SEC. In plain English: it is a snapshot of the long stock positions a fund held at the end of a quarter. It covers long US-listed equities only — not short positions, options, cash, or private holdings — and the funds shown are the large sample we track, not the complete 13F universe.