Mar 31, 2026 filings. Quarterly 13F reports arrive up to 45 days after quarter end; this register is filed through May 29, 2026.
146 institutional managers reported holding OLPX for the quarter ended Mar 31, 2026. Together they hold about 89% of shares outstanding; the top 10 hold 85%. 39 opened new positions; 26 closed out. Complete ranked register from SEC 13F filings.
| manager | shares | % out | value (Mar 31, 2026 close) | change | held since |
|---|---|---|---|---|---|
| Advent International, L.p. (focused) | 499.47M | 74.55% | $1.01B | unchanged | 2021 Q3 |
| FIL LTD | 26.78M | 4.00% | $54.4M | opened | 2026 Q1 |
| Vanguard Group | 12.27M | 1.83% | $24.9M | added +3.1% | 2021 Q3 |
| BlackRock | 11.02M | 1.64% | $22.4M | added +1.2% | 2021 Q3 |
| Geode Capital | 4.09M | 0.61% | $8.3M | added +5.8% | 2021 Q3 |
| Glazer Capital, LLC | 3.50M | 0.52% | $7.1M | opened | 2026 Q1 |
| Renaissance Technologies | 3.27M | 0.49% | $6.6M | trimmed -0.9% | 2021 Q4 |
| State Street | 3.03M | 0.45% | $6.2M | trimmed -1% | 2021 Q4 |
| TIG Advisors, LLC | 2.60M | 0.39% | $5.3M | opened | 2026 Q1 |
| UBS | 2.03M | 0.30% | $4.1M | added +307.3% | 2021 Q3 |
| Russell Investments Group, LTD. | 1.73M | 0.26% | $3.5M | trimmed -9.3% | 2022 Q4 |
| Bridgeway Capital Management, LLC | 1.46M | 0.22% | $3.0M | trimmed -45.8% | 2025 Q1 |
| PSquared Asset Management AG (focused) | 1.42M | 0.21% | $2.9M | opened | 2026 Q1 |
| Coatue Management | 1.26M | 0.19% | $2.6M | opened | 2023 Q2 |
| Empowered Funds, LLC | 1.26M | 0.19% | $2.5M | unchanged | 2025 Q1 |
| Alberta Investment Management CORP | 1.25M | 0.19% | $2.5M | opened | 2026 Q1 |
| Goldman Sachs | 1.15M | 0.17% | $2.3M | trimmed -10.4% | 2021 Q3 |
| Northern Trust | 1.07M | 0.16% | $2.2M | added +7% | 2021 Q4 |
| Charles Schwab Investment Management | 1.06M | 0.16% | $2.2M | trimmed -2.3% | 2021 Q4 |
| Oxford Asset Management LLP | 978.4k | 0.15% | $2.0M | opened | 2026 Q1 |
| Man Group | 886.6k | 0.13% | $1.8M | opened | 2026 Q1 |
| AQR Capital | 871.0k | 0.13% | $1.8M | added +259.2% | 2022 Q4 |
| Dimensional Fund Advisors | 818.1k | 0.12% | $1.7M | trimmed -9.9% | 2022 Q4 |
| Groupe la Francaise | 731.1k | 0.11% | $1.5M | opened | 2026 Q1 |
| BNY Mellon | 666.9k | 0.10% | $1.4M | added +3.3% | 2021 Q4 |
| Millennium Management | 588.3k | 0.09% | $1.2M | opened | 2026 Q1 |
| GAMCO (Gabelli) | 491.4k | 0.07% | $998k | opened | 2026 Q1 |
| XTX Topco LTD | 490.9k | 0.07% | $996k | added +1193.6% | 2023 Q3 |
| Credit Industriel ET Commercial | 487.4k | 0.07% | $989k | opened | 2026 Q1 |
| Natixis Advisors, LLC | 485.5k | 0.07% | $986k | unchanged | 2025 Q2 |
| Gabelli & CO Investment Advisers, INC. | 470.1k | 0.07% | $954k | opened | 2026 Q1 |
| Skandinaviska Enskilda Banken AB (publ) | 400.0k | 0.06% | $812k | opened | 2026 Q1 |
| Bank OF America CORP /DE/ | 381.6k | 0.06% | $775k | trimmed -49% | 2021 Q4 |
| Fortress Investment Group LLC (focused) | 373.1k | 0.06% | $757k | opened | 2026 Q1 |
| Morgan Stanley | 362.8k | 0.05% | $736k | trimmed -74.8% | 2021 Q3 |
| Nuveen | 329.0k | 0.05% | $668k | added +0.5% | 2021 Q3 |
| Swiss National Bank | 322.7k | 0.05% | $655k | unchanged | 2023 Q2 |
| Glenmede Trust CO NA | 318.4k | 0.05% | $646k | unchanged | 2025 Q3 |
| Citadel Advisors | 292.5k | 0.04% | $594k | opened | 2021 Q3 |
| Susquehanna International Group | 241.2k | 0.04% | $490k | added +188.2% | 2021 Q4 |
| Tudor Investment | 227.6k | 0.03% | $462k | opened | 2026 Q1 |
| Oasis Management CO LTD. | 165.3k | 0.03% | $335k | trimmed -15.9% | 2024 Q3 |
| Barclays PLC | 140.4k | 0.02% | $285k | trimmed -42.7% | 2022 Q1 |
| Legal & General Group PLC | 138.3k | 0.02% | $281k | trimmed -26.1% | 2021 Q3 |
| AllianceBernstein | 136.2k | 0.02% | $277k | unchanged | 2021 Q3 |
| ABC Arbitrage SA | 130.5k | 0.02% | $265k | opened | 2026 Q1 |
| Simplex Trading, LLC | 126.0k | 0.02% | $256k | added +461.4% | 2022 Q1 |
| California State Teachers Retirement System | 121.8k | 0.02% | $247k | trimmed -0.9% | 2021 Q4 |
| IEQ Capital, LLC | 115.9k | 0.02% | $235k | added +195.7% | 2025 Q1 |
| T. Rowe Price | 98.5k | 0.01% | $200k | added +37.4% | 2021 Q3 |
Largest 50 of 146 shown; the full ranked, searchable register is at boothcheck.com/holders/OLPX. 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.