Mar 31, 2026 filings. Quarterly 13F reports arrive up to 45 days after quarter end; this register is filed through May 29, 2026.
846 institutional managers reported holding GNRC for the quarter ended Mar 31, 2026. Together they hold about 91% of shares outstanding; the top 10 hold 38%. 181 opened new positions; 67 closed out. Complete ranked register from SEC 13F filings.
| manager | shares | % out | value (Mar 31, 2026 close) | change | held since |
|---|---|---|---|---|---|
| Vanguard Group | 6.66M | 11.24% | $1.30B | added +1% | ≤2013 |
| BlackRock | 3.80M | 6.42% | $741.1M | unchanged | ≤2013 |
| Invesco | 2.29M | 3.87% | $446.8M | trimmed -5.5% | ≤2013 |
| State Street | 2.18M | 3.68% | $425.3M | unchanged | ≤2013 |
| Boston Partners | 1.54M | 2.59% | $299.5M | trimmed -4.9% | 2024 Q2 |
| Geode Capital | 1.52M | 2.57% | $297.3M | added +2.3% | ≤2013 |
| D. E. Shaw | 1.30M | 2.19% | $253.1M | trimmed -2.5% | 2018 Q3 |
| Ariel Investments, LLC | 1.29M | 2.19% | $252.5M | trimmed -9.1% | 2022 Q2 |
| Arrowstreet Capital | 1.04M | 1.75% | $202.5M | added +9.1% | 2024 Q2 |
| Dimensional Fund Advisors | 936.6k | 1.58% | $182.6M | trimmed -10.9% | ≤2013 |
| Morgan Stanley | 787.9k | 1.33% | $153.7M | trimmed -19.8% | ≤2013 |
| Bank OF America CORP /DE/ | 742.6k | 1.25% | $144.8M | added +19.7% | ≤2013 |
| UBS | 667.8k | 1.13% | $130.2M | trimmed -36.9% | ≤2013 |
| Diamant Asset Management, INC. | 666.1k | 1.12% | $129.9M | added +19433% | 2023 Q2 |
| AllianceBernstein | 664.4k | 1.12% | $129.6M | added +139.6% | ≤2013 |
| Bank OF Montreal /CAN/ | 661.3k | 1.12% | $129.0M | trimmed -4.9% | ≤2013 |
| Charles Schwab Investment Management | 624.3k | 1.05% | $121.7M | added +2.5% | ≤2013 |
| Disciplined Growth Investors INC /MN | 580.9k | 0.98% | $113.3M | trimmed -7.5% | 2022 Q3 |
| No Street GP LP (focused) | 550.0k | 0.93% | $107.3M | added +48.6% | 2025 Q4 |
| Northern Trust | 526.7k | 0.89% | $102.7M | added +6.3% | ≤2013 |
| Jennison Associates LLC | 520.6k | 0.88% | $101.5M | added +1% | 2024 Q3 |
| Park Presidio Capital LLC (focused) | 520.3k | 0.88% | $101.5M | added +21.1% | 2024 Q3 |
| Royal Bank OF Canada | 520.0k | 0.88% | $101.4M | trimmed -13.7% | ≤2013 |
| Envestnet Asset Management INC | 488.3k | 0.82% | $95.2M | trimmed -14.5% | 2014 Q2 |
| Robeco Institutional Asset Management B.v. | 485.2k | 0.82% | $94.6M | added +28.5% | 2024 Q3 |
| King Luther Capital Management CORP | 468.7k | 0.79% | $91.4M | trimmed -1.9% | 2013 Q3 |
| Brown Advisory INC | 436.7k | 0.74% | $85.2M | trimmed -50% | 2022 Q4 |
| T. Rowe Price | 433.1k | 0.73% | $84.5M | added +419.6% | 2013 Q3 |
| Amundi | 433.0k | 0.73% | $84.4M | added +174.9% | 2019 Q3 |
| Nomura Asset Management International INC. | 400.0k | 0.68% | $78.0M | trimmed -26% | 2024 Q4 |
| Mackenzie Financial CORP | 392.5k | 0.66% | $76.5M | trimmed -31.5% | 2023 Q2 |
| Coatue Management | 390.5k | 0.66% | $76.2M | added +5.8% | 2022 Q3 |
| Evercore Wealth Management, LLC | 386.1k | 0.65% | $75.3M | trimmed -2.2% | 2022 Q2 |
| Federated Hermes, INC. | 385.2k | 0.65% | $75.1M | trimmed -10.4% | ≤2013 |
| MFS Investment Management | 349.6k | 0.59% | $68.2M | trimmed -63.6% | 2025 Q3 |
| Blair William & CO/IL | 346.8k | 0.59% | $67.6M | added +13.5% | ≤2013 |
| Victory Capital Management INC | 344.3k | 0.58% | $67.2M | trimmed -74.4% | 2019 Q2 |
| Impax Asset Management Group plc | 336.5k | 0.57% | $65.6M | trimmed -26.9% | ≤2013 |
| Eventide Asset Management, LLC | 306.8k | 0.52% | $59.8M | added +226.9% | 2025 Q4 |
| Energy Income Partners, LLC | 303.0k | 0.51% | $59.1M | trimmed -42.6% | 2024 Q3 |
| Holocene Advisors | 301.4k | 0.51% | $58.8M | trimmed -48.2% | 2023 Q2 |
| BNY Mellon | 295.5k | 0.50% | $57.6M | trimmed -1.3% | ≤2013 |
| Davenport & CO LLC | 292.4k | 0.49% | $57.0M | trimmed -24.4% | 2019 Q4 |
| Stephens Investment Management Group LLC | 289.4k | 0.49% | $56.4M | trimmed -0.6% | 2022 Q3 |
| Susquehanna International Group | 281.3k | 0.47% | $54.8M | trimmed -40.6% | ≤2013 |
| Jane Street | 279.0k | 0.47% | $54.4M | added +310.2% | 2019 Q3 |
| Wells Fargo & COMPANY/MN | 256.4k | 0.43% | $50.0M | added +9.2% | ≤2013 |
| Two Sigma | 256.1k | 0.43% | $49.9M | added +79.4% | 2022 Q4 |
| Pacer Advisors, INC. | 250.7k | 0.42% | $48.9M | added +2407.3% | 2020 Q3 |
| Goldman Sachs | 250.1k | 0.42% | $48.8M | added +9.2% | ≤2013 |
Largest 50 of 846 shown; the full ranked, searchable register is at boothcheck.com/holders/GNRC. 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.