Mar 31, 2026 filings. Quarterly 13F reports arrive up to 45 days after quarter end; this register is filed through May 29, 2026.
987 institutional managers reported holding GRMN for the quarter ended Mar 31, 2026. Together they hold about 55% of shares outstanding; the top 10 hold 32%. 128 opened new positions; 101 closed out. Complete ranked register from SEC 13F filings.
| manager | shares | % out | value (Mar 31, 2026 close) | change | held since |
|---|---|---|---|---|---|
| Vanguard Group | 20.16M | 10.42% | $4.69B | unchanged | ≤2013 |
| BlackRock | 15.44M | 7.97% | $3.59B | trimmed -3.5% | ≤2013 |
| State Street | 6.85M | 3.54% | $1.59B | trimmed -2.3% | ≤2013 |
| Artisan Partners | 5.52M | 2.85% | $1.28B | trimmed -3.2% | 2021 Q2 |
| Geode Capital | 4.40M | 2.27% | $1.02B | trimmed -2.4% | ≤2013 |
| FMR (Fidelity) | 2.15M | 1.11% | $500.0M | trimmed -11% | ≤2013 |
| UBS | 1.98M | 1.02% | $460.5M | added +29.8% | ≤2013 |
| AllianceBernstein | 1.93M | 1.00% | $449.1M | added +33.1% | ≤2013 |
| Northern Trust | 1.79M | 0.93% | $416.2M | added +4.2% | ≤2013 |
| Morgan Stanley | 1.78M | 0.92% | $413.1M | added +6.7% | ≤2013 |
| Dimensional Fund Advisors | 1.63M | 0.84% | $379.2M | added +2.5% | ≤2013 |
| Disciplined Growth Investors INC /MN | 1.33M | 0.69% | $309.4M | trimmed -4.9% | ≤2013 |
| Bank OF America CORP /DE/ | 1.30M | 0.67% | $301.0M | added +73.8% | ≤2013 |
| Goldman Sachs | 1.28M | 0.66% | $298.4M | unchanged | ≤2013 |
| Legal & General Group PLC | 1.19M | 0.61% | $275.4M | added +2.2% | 2016 Q4 |
| Invesco | 1.18M | 0.61% | $275.1M | added +4.6% | ≤2013 |
| Amundi | 1.02M | 0.53% | $236.4M | added +82.5% | 2017 Q4 |
| Charles Schwab Investment Management | 1.02M | 0.53% | $236.2M | added +4% | ≤2013 |
| Captrust Financial Advisors | 866.8k | 0.45% | $201.4M | added +3.3% | 2018 Q3 |
| BNY Mellon | 836.8k | 0.43% | $194.4M | trimmed -2.3% | ≤2013 |
| Wells Fargo & COMPANY/MN | 806.8k | 0.42% | $187.5M | trimmed -1.4% | ≤2013 |
| Man Group | 644.6k | 0.33% | $149.8M | trimmed -20.7% | 2018 Q1 |
| AQR Capital | 600.0k | 0.31% | $139.4M | added +7.9% | 2014 Q4 |
| Acadian Asset Management | 568.1k | 0.29% | $132.0M | added +80.4% | 2024 Q2 |
| Marshall Wace | 564.1k | 0.29% | $131.1M | trimmed -5.9% | 2017 Q1 |
| Barclays PLC | 562.0k | 0.29% | $130.6M | added +54.1% | ≤2013 |
| KBC Group NV | 552.3k | 0.28% | $128.3M | trimmed -1.6% | ≤2013 |
| Pictet Asset Management Holding SA | 547.7k | 0.28% | $127.3M | trimmed -15.3% | 2018 Q3 |
| Deutsche Bank AG\ | 521.5k | 0.27% | $121.2M | trimmed -13.6% | ≤2013 |
| BNP Paribas Financial Markets | 507.1k | 0.26% | $117.8M | trimmed -11% | ≤2013 |
| SG Americas Securities, LLC | 506.3k | 0.26% | $117.6M | added +192.8% | ≤2013 |
| Swiss National Bank | 479.8k | 0.25% | $111.5M | added +7% | ≤2013 |
| Mitsubishi UFJ Asset Management CO., LTD. | 477.9k | 0.25% | $111.1M | added +4.1% | ≤2013 |
| Nuveen | 467.8k | 0.24% | $108.7M | added +27.8% | 2019 Q1 |
| Bahl & Gaynor INC | 464.1k | 0.24% | $107.8M | added +215.4% | 2025 Q4 |
| Caisse de depot et placement du Quebec | 430.0k | 0.22% | $99.9M | added +3.9% | 2015 Q4 |
| Sumitomo Mitsui Trust Group, INC. | 418.6k | 0.22% | $97.3M | trimmed -3.2% | 2022 Q1 |
| Qube Research & Technologies LTD | 410.7k | 0.21% | $95.4M | trimmed -4.6% | 2019 Q1 |
| Thrivent Financial for Lutherans | 408.6k | 0.21% | $94.9M | trimmed -26.6% | 2017 Q1 |
| Robeco Institutional Asset Management B.v. | 405.3k | 0.21% | $94.2M | trimmed -7.6% | 2015 Q2 |
| Royal Bank OF Canada | 400.0k | 0.21% | $93.0M | added +2.7% | ≤2013 |
| Westfield Capital Management CO LP | 376.4k | 0.19% | $87.5M | added +12.1% | 2025 Q4 |
| Janus Henderson | 373.4k | 0.19% | $86.8M | trimmed -15.8% | ≤2013 |
| Worldquant Millennium Advisors LLC | 363.1k | 0.19% | $84.4M | added +122.7% | 2024 Q4 |
| Select Equity Group | 361.6k | 0.19% | $84.0M | trimmed -32.3% | 2017 Q3 |
| M&G PLC | 357.2k | 0.18% | $83.0M | added +0.8% | 2019 Q4 |
| Quantinno Capital Management LP | 351.2k | 0.18% | $81.6M | added +51.2% | 2022 Q4 |
| CalPERS | 329.0k | 0.17% | $76.5M | added +12.7% | ≤2013 |
| SEI Investments CO | 323.8k | 0.17% | $75.2M | trimmed -12.4% | ≤2013 |
| DekaBank Deutsche Girozentrale | 308.8k | 0.16% | $71.7M | unchanged | ≤2013 |
Largest 50 of 987 shown; the full ranked, searchable register is at boothcheck.com/holders/GRMN. 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.