Ranked by reported Q1 2026 13F market value
Share of total reported institutional value in FIBK held by the largest 10 / 25 filers.
| # | Institution | Shares Held | Market Value | QoQ Change | Ownership % | % of Fund |
|---|---|---|---|---|---|---|
| 1 | BlackRock, Inc. | 13.5M | $450.2M | -1.0% | 13.823% | 0.01% |
| 2 | STATE STREET CORP | 5.9M | $196.8M | +7.5% | 6.041% | 0.01% |
| 3 | DIMENSIONAL FUND ADVISORS LP | 5.6M | $188.1M | +4.3% | 5.774% | 0.04% |
| 4 | VANGUARD PORTFOLIO MANAGEMENT LLC | 5.5M | $183.4M | β | 5.630% | 0.01% |
| 5 | FIRST INTERSTATE BANK | 4.7M | $155.4M | -0.3% | 4.772% | 8.74% |
| 6 | HoldCo Asset Management, L.P. | 4.0M | $131.9M | 0.0% | 4.051% | 9.82% |
| 7 | WELLINGTON MANAGEMENT GROUP LLP | 3.9M | $129.7M | -33.0% | 3.981% | 0.02% |
| 8 | FMR LLC | 3.9M | $129.5M | -18.1% | 3.976% | 0.01% |
| 9 | VANGUARD CAPITAL MANAGEMENT LLC | 3.9M | $128.8M | β | 3.954% | 0.00% |
| 10 | Capital International Investors | 2.3M | $76.5M | -14.3% | 2.349% | 0.02% |
| 11 | GEODE CAPITAL MANAGEMENT, LLC | 2.2M | $74.1M | -0.7% | 2.275% | 0.00% |
| 12 | VICTORY CAPITAL MANAGEMENT INC | 2.1M | $69.7M | +0.5% | 2.140% | 0.04% |
| 13 | FRANKLIN RESOURCES INC | 1.9M | $62.8M | -27.6% | 1.929% | 0.02% |
| 14 | BANK OF AMERICA CORP /DE/ | 1.8M | $59.4M | +1.4% | 1.823% | 0.00% |
| 15 | UBS Group AG | 1.8M | $58.7M | -6.1% | 1.801% | 0.01% |
| 16 | NOMURA ASSET MANAGEMENT INTERNATIONAL INC. | 1.7M | $56.9M | -12.3% | 1.747% | 0.10% |
| 17 | MORGAN STANLEY | 1.5M | $50.6M | -4.1% | 1.553% | 0.00% |
| 18 | MASSACHUSETTS FINANCIAL SERVICES CO /MA/ | 1.3M | $42.5M | -5.1% | 1.305% | 0.01% |
| 19 | FIRST TRUST ADVISORS LP | 1.2M | $40.0M | +214.9% | 1.228% | 0.03% |
| 20 | CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 1.2M | $39.5M | +0.7% | 1.214% | 0.01% |
| 21 | Capital World Investors | 1.1M | $38.3M | β | 1.176% | 0.01% |
| 22 | Bank of New York Mellon Corp | 976K | $32.6M | -3.1% | 1.001% | 0.01% |
| 23 | CRAMER ROSENTHAL MCGLYNN LLC | 914K | $30.5M | -13.2% | 0.938% | 2.24% |
| 24 | NORTHERN TRUST CORP | 881K | $29.4M | +1.1% | 0.904% | 0.00% |
| 25 | MILLENNIUM MANAGEMENT LLC | 781K | $26.1M | β | 0.801% | 0.02% |
denotes a marquee investor (Buffett, Burry, ARK, Tiger Global, Pershing Square, Baupost and other widely-followed managers). β% of Fundβ shows how much of that investorβs total 13F portfolio is invested in FIBK β a direct measure of their conviction.
Filings activity in FIBK during Q1 2026, grouped by how each filer changed its position.
Institutions that opened a new FIBK position in Q1 2026
Institutions that fully closed their FIBK position in Q1 2026
8 quarters of 13F filings Β· Ξ columns show change vs prior quarter
| Quarter | Inst. Holders | Ξ Holders | Ownership % | Ξ Ownership | Total 13F Value | Ξ Value |
|---|---|---|---|---|---|---|
| Q1 2026 | 285 | +4.4% | 82.42% | 9.83 pp | $2.98B | 11% |
| Q4 2025 | 273 | +18% | 92.25% | +15.63 pp | $3.34B | +20% |
| Q3 2025 | 232 | +1.8% | 76.62% | +9.03 pp | $2.77B | +13% |
| Q2 2025 | 228 | 6.6% | 67.59% | 16.17 pp | $2.45B | 19% |
| Q1 2025 | 244 | +3.8% | 83.76% | +9.80 pp | $3.03B | +13% |
| Q4 2024 | 235 | +1.3% | 73.96% | +7.54 pp | $2.68B | +11% |
| Q3 2024 | 232 | +8.4% | 66.42% | +5.82 pp | $2.40B | +9.6% |
| Q2 2024 | 214 | β | 60.60% | β | $2.19B | β |
Source: SEC 13F institutional filings. Ownership % requires market cap data and will show once linked. Ξ columns compare to the immediately prior filed quarter.
Quick answers to the most common questions about buying FIBK stock.
Based on Q1 2026 13F filings, institutional ownership of First Interstate BancSystem, Inc. stands at 82.4%, held across 285 reporting institutions.
BlackRock, Inc. is the largest reported institutional holder of FIBK, with approximately 13,479,487 shares worth $0.45B as of Q1 2026.
Yes β 1 widely-followed marquee investor appear among the top 25 institutional holders of FIBK, including MILLENNIUM MANAGEMENT LLC.
Our composite Smart Money Score for FIBK is 41 out of 100 (Neutral). It combines net institutional buying activity, ownership shift, marquee investor presence, and holder-count growth.
49 institutions opened new positions in FIBK during Q1 2026, while 37 fully exited. 75 added to existing positions and 159 trimmed.
FIBK institutional ownership fell by 9.83 percentage points quarter-over-quarter, with a net change of +12 holders.
The top 10 institutions account for 59.3% of all reported 13F value in FIBK, and the top 25 account for 83.2%.
All data is sourced from SEC Form 13F filings, which institutional investment managers with at least $100M in assets are required to file each quarter. We process every 13F filing from EDGAR and recompute the aggregates after each cycle. Insider transactions are sourced from Form 4 filings.
First Interstate BancSystem, Inc. (FIBK) Institutional Ownership