Mar 31, 2026 filings. Quarterly 13F reports arrive up to 45 days after quarter end; this register is filed through May 29, 2026.
245 institutional managers reported holding PUMP for the quarter ended Mar 31, 2026. Reported positions total over 95% of shares outstanding; the top 10 hold 45%. 60 opened new positions; 37 closed out. Complete ranked register from SEC 13F filings.
| manager | shares | % out | value (Mar 31, 2026 close) | change | held since |
|---|---|---|---|---|---|
| BlackRock | 8.57M | 7.33% | $123.6M | added +19% | 2017 Q2 |
| Vanguard Group | 7.84M | 6.70% | $113.0M | added +32.3% | 2017 Q2 |
| Sourcerock Group LLC (focused) | 7.24M | 6.19% | $104.4M | added +5.8% | 2024 Q4 |
| Dimensional Fund Advisors | 6.48M | 5.54% | $93.5M | added +14.7% | 2018 Q2 |
| D. E. Shaw | 4.74M | 4.06% | $68.4M | added +24.2% | 2023 Q4 |
| Valiant Capital Management, L.p. (focused) | 4.04M | 3.46% | $58.3M | added +10.2% | 2025 Q4 |
| American Century Companies INC | 3.85M | 3.29% | $55.5M | added +10.2% | 2019 Q1 |
| Arrowstreet Capital | 3.45M | 2.95% | $49.7M | added +10.1% | 2024 Q2 |
| Morgan Stanley | 3.18M | 2.72% | $45.8M | added +64.7% | 2017 Q2 |
| State Street | 3.05M | 2.61% | $44.0M | added +27.2% | 2017 Q2 |
| Cooper Creek Partners Management LLC | 2.97M | 2.54% | $42.8M | opened | 2026 Q1 |
| VAN ECK Associates CORP | 2.76M | 2.36% | $39.8M | added +129.4% | 2017 Q1 |
| Charles Schwab Investment Management | 2.49M | 2.13% | $35.9M | added +3.6% | 2017 Q2 |
| VR Advisory Services LTD (focused) | 2.46M | 2.11% | $35.5M | added +184.3% | 2025 Q1 |
| Geode Capital | 2.34M | 2.00% | $33.8M | added +23.2% | 2017 Q2 |
| Philosophy Capital Management LLC (focused) | 2.28M | 1.95% | $32.9M | trimmed -41.5% | 2024 Q4 |
| Alta Fundamental Advisers LLC (focused) | 1.77M | 1.52% | $25.6M | trimmed -1.4% | 2025 Q2 |
| Healthcare OF Ontario Pension Plan Trust Fund | 1.65M | 1.41% | $23.8M | added +561.4% | 2025 Q3 |
| Millennium Management | 1.55M | 1.33% | $22.4M | added +153.4% | 2017 Q1 |
| Nuveen | 1.50M | 1.28% | $21.6M | unchanged | 2017 Q4 |
| Fisher Investments | 1.49M | 1.28% | $21.6M | unchanged | 2018 Q1 |
| Citadel Advisors | 1.43M | 1.22% | $20.6M | trimmed -13.1% | 2017 Q1 |
| Goldman Sachs | 1.17M | 1.00% | $16.8M | added +23.7% | 2017 Q1 |
| Jane Street | 1.14M | 0.98% | $16.5M | trimmed -13.5% | 2019 Q4 |
| Empowered Funds, LLC | 1.13M | 0.97% | $16.3M | added +44.4% | 2023 Q3 |
| Soros Capital Management LLC (focused) | 1.09M | 0.93% | $15.7M | added +59.4% | 2025 Q4 |
| Oberweis Asset Management INC/ | 965.5k | 0.83% | $13.9M | added +1.9% | 2025 Q4 |
| Two Sigma | 945.0k | 0.81% | $13.6M | added +13.1% | 2022 Q4 |
| Hotchkis & Wiley Capital Management LLC | 919.4k | 0.79% | $13.3M | trimmed -20.5% | 2019 Q1 |
| Situational Awareness Partners LP (focused) | 910.3k | 0.78% | $13.1M | opened | 2026 Q1 |
| Situational Awareness LP (focused) | 910.3k | 0.78% | $13.1M | unchanged | 2025 Q4 |
| SIR Capital Management, L.p. | 903.1k | 0.77% | $13.0M | trimmed -32.9% | 2025 Q1 |
| Ameriprise Financial INC | 895.3k | 0.77% | $12.9M | trimmed -4.2% | 2017 Q4 |
| Invesco | 876.9k | 0.75% | $12.6M | added +115.4% | 2017 Q2 |
| PKO BP Bankowy Universal Pension Society JSC (focused) | 862.5k | 0.74% | $12.4M | added +26.3% | 2025 Q3 |
| Bridgeway Capital Management, LLC | 853.8k | 0.73% | $12.3M | added +2.6% | 2018 Q3 |
| Fulcrum Asset Management LLP | 827.7k | 0.71% | $11.9M | opened | 2026 Q1 |
| Northern Trust | 806.3k | 0.69% | $11.6M | added +26.3% | 2017 Q2 |
| Bwcp, LP (focused) | 800.4k | 0.69% | $11.5M | opened | 2026 Q1 |
| Prudential Financial INC | 729.6k | 0.62% | $10.5M | added +38.1% | 2018 Q2 |
| Bank OF America CORP /DE/ | 719.7k | 0.62% | $10.4M | added +1.1% | 2017 Q3 |
| Towle & CO | 676.4k | 0.58% | $9.8M | trimmed -37.1% | 2021 Q1 |
| Renaissance Technologies | 652.4k | 0.56% | $9.4M | trimmed -1% | 2024 Q3 |
| UBS | 650.4k | 0.56% | $9.4M | added +21.9% | 2017 Q1 |
| Dana Investment Advisors, INC. | 633.9k | 0.54% | $9.1M | trimmed -14.6% | 2024 Q2 |
| SEI Investments CO | 534.1k | 0.46% | $7.7M | added +113.7% | 2017 Q2 |
| Manatuck Hill Partners, LLC | 525.0k | 0.45% | $7.6M | opened | 2026 Q1 |
| BNP Paribas Financial Markets | 521.5k | 0.45% | $7.5M | trimmed -37.2% | 2017 Q2 |
| First Eagle Investment Management | 517.8k | 0.44% | $7.5M | added +6.3% | 2022 Q1 |
| Aventail Capital Group, LP | 512.5k | 0.44% | $7.4M | added +68.6% | 2024 Q4 |
Largest 50 of 245 shown; the full ranked, searchable register is at boothcheck.com/holders/PUMP. 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.