Mar 31, 2026 filings. Quarterly 13F reports arrive up to 45 days after quarter end; this register is filed through May 29, 2026.
395 institutional managers reported holding GBCI for the quarter ended Mar 31, 2026. Together they hold about 81% of shares outstanding; the top 10 hold 45%. 56 opened new positions; 40 closed out. Complete ranked register from SEC 13F filings.
| manager | shares | % out | value (Mar 31, 2026 close) | change | held since |
|---|---|---|---|---|---|
| BlackRock | 16.02M | 12.30% | $715.6M | unchanged | ≤2013 |
| Vanguard Group | 13.60M | 10.44% | $607.4M | added +1.6% | ≤2013 |
| State Street | 6.22M | 4.77% | $277.6M | added +0.6% | ≤2013 |
| Neuberger Berman Group LLC | 4.46M | 3.42% | $199.1M | trimmed -2.2% | 2016 Q4 |
| Capital Research Global Investors | 3.87M | 2.97% | $172.9M | trimmed -30.6% | 2022 Q2 |
| Geode Capital | 3.30M | 2.53% | $147.2M | trimmed -1.1% | ≤2013 |
| Cooke & Bieler LP | 2.86M | 2.20% | $127.8M | trimmed -6.2% | 2018 Q4 |
| Dimensional Fund Advisors | 2.85M | 2.19% | $127.3M | unchanged | ≤2013 |
| Victory Capital Management INC | 2.61M | 2.00% | $116.6M | added +82.6% | 2019 Q3 |
| Silvercrest Asset Management Group LLC | 2.42M | 1.86% | $108.1M | trimmed -6.1% | 2017 Q3 |
| Capital International Investors | 2.02M | 1.55% | $90.3M | added +16% | 2023 Q1 |
| Goldman Sachs | 1.93M | 1.48% | $86.2M | added +19% | ≤2013 |
| Deprince Race & Zollo INC | 1.89M | 1.45% | $84.2M | added +13.4% | 2020 Q4 |
| Charles Schwab Investment Management | 1.78M | 1.36% | $79.4M | added +1.4% | ≤2013 |
| Northern Trust | 1.72M | 1.32% | $76.8M | added +3.3% | ≤2013 |
| Gw&k Investment Management, LLC | 1.41M | 1.08% | $62.9M | added +5.8% | ≤2013 |
| Bank OF America CORP /DE/ | 1.28M | 0.98% | $57.2M | added +82.1% | ≤2013 |
| Morgan Stanley | 1.23M | 0.94% | $54.8M | added +25.3% | ≤2013 |
| NFJ Investment Group, LLC | 1.19M | 0.92% | $53.4M | unchanged | 2021 Q1 |
| FMR (Fidelity) | 1.17M | 0.90% | $52.2M | added +25.8% | 2018 Q3 |
| BNY Mellon | 1.11M | 0.85% | $49.4M | unchanged | ≤2013 |
| Voya Investment Management LLC | 1.10M | 0.85% | $49.4M | added +34% | ≤2013 |
| Citadel Advisors | 996.8k | 0.77% | $44.5M | added +1253.1% | 2018 Q4 |
| Segall Bryant & Hamill, LLC | 950.0k | 0.73% | $42.4M | trimmed -18.1% | 2018 Q2 |
| Madison Asset Management, LLC | 930.5k | 0.71% | $41.6M | trimmed -5.8% | ≤2013 |
| UBS | 925.0k | 0.71% | $41.3M | added +27.3% | ≤2013 |
| Snyder Capital Management L P | 894.5k | 0.69% | $40.0M | trimmed -7.1% | 2020 Q4 |
| Fisher Investments | 799.7k | 0.61% | $35.7M | trimmed -4% | ≤2013 |
| Natixis Advisors, LLC | 749.5k | 0.57% | $33.5M | added +20.9% | 2016 Q4 |
| Vaughan Nelson Investment Management, L.p. | 743.2k | 0.57% | $33.2M | opened | 2026 Q1 |
| Nuveen | 741.7k | 0.57% | $33.1M | added +6.3% | 2019 Q2 |
| SEI Investments CO | 741.1k | 0.57% | $33.1M | added +17.2% | 2019 Q1 |
| Westwood Holdings Group INC | 712.8k | 0.55% | $31.8M | added +1.1% | 2023 Q1 |
| Jain Global LLC | 613.0k | 0.47% | $27.4M | trimmed -18.3% | 2025 Q2 |
| Jones Financial Companies Lllp | 609.9k | 0.47% | $27.2M | added +8013.1% | 2024 Q2 |
| Point72 | 598.4k | 0.46% | $26.7M | opened | 2026 Q1 |
| Janus Henderson | 555.8k | 0.43% | $24.8M | added +887.5% | 2021 Q2 |
| Beacon Pointe Advisors, LLC | 541.5k | 0.42% | $24.2M | added +1.1% | 2025 Q4 |
| Kennedy Capital Management LLC | 528.6k | 0.41% | $23.6M | trimmed -3.6% | 2023 Q3 |
| AQR Capital | 528.5k | 0.41% | $23.6M | added +3.3% | 2022 Q4 |
| Port Capital LLC | 523.6k | 0.40% | $23.4M | added +0.7% | 2020 Q3 |
| Lone Peak Global Investors LLC (focused) | 450.4k | 0.35% | $20.1M | added +20.9% | 2023 Q2 |
| Russell Investments Group, LTD. | 442.7k | 0.34% | $19.8M | added +8.9% | 2016 Q4 |
| Lido Advisors, LLC | 417.2k | 0.32% | $18.6M | trimmed -0.6% | 2025 Q2 |
| Rhumbline Advisers | 401.1k | 0.31% | $17.9M | added +2.1% | ≤2013 |
| Royce & Associates | 397.7k | 0.30% | $17.8M | trimmed -8.4% | 2024 Q2 |
| Heartland Advisors INC | 372.0k | 0.29% | $16.6M | unchanged | 2020 Q2 |
| Royal Bank OF Canada | 346.1k | 0.27% | $15.5M | added +1.4% | ≤2013 |
| Stifel Financial CORP | 343.4k | 0.26% | $15.3M | added +13.8% | 2013 Q3 |
| Envestnet Asset Management INC | 341.0k | 0.26% | $15.2M | added +68.1% | ≤2013 |
Largest 50 of 395 shown; the full ranked, searchable register is at boothcheck.com/holders/GBCI. Related filers are grouped using the filings' own included-manager declarations. Historically, several managers opening new positions in the same quarter said almost nothing about the quarter that followed (59,118 cases since 2013). A filed record, not a forecast. Nothing here is investment advice.