PRTA Institutional Ownership
Top institutional (13F) holders of PRTA and 5%+ (13D/G) positions, sourced from SEC EDGAR.
Institutional owners
39
Institutional value
$281.72M
Top holder
FMR LLC
Top holders
| Holder | Stake | Filed | Value |
|---|---|---|---|
| FMR LLCinvestment advisor | 14.0% | Aug 13, 2026 | $70.48M |
| BlackRock, Inc.holding company | 9.5% | Aug 7, 2026 | $47.66M |
| STATE STREET CORPORATIONholding company | 4.7% | Sep 22, 2026 | $23.43M |
| Vanguard Portfolio Managementinvestment advisor | 3.2% | Aug 13, 2026 | $16.17M |
| D. E. Shaw & Co., Inc.investment advisor | 3.1% | Aug 14, 2026 | $15.78M |
| TWO SIGMA INVESTMENTS, LPinvestment advisor | 2.5% | Aug 14, 2026 | $12.38M |
| MORGAN STANLEYholding company | 1.9% | Aug 13, 2026 | $9.74M |
| GOLDMAN SACHS GROUP INCinvestment advisor | 1.9% | Aug 14, 2026 | $9.59M |
| GEODE CAPITAL MANAGEMENT, LLCinvestment advisor | 1.8% | Nov 6, 2026 | $7.88M |
| Dimensional Fund Advisors LPinvestment advisor | 1.8% | Nov 4, 2026 | $7.76M |
| RENAISSANCE TECHNOLOGIES LLCinvestment advisor | 1.4% | Aug 13, 2026 | $6.83M |
| Man Group plcinvestment advisor | 1.3% | Aug 14, 2026 | $6.64M |
| CITADEL ADVISORS LLCinvestment advisor | 1.2% | Sep 1, 2026 | $5.85M |
| SUSQUEHANNA INTERNATIONAL GROUP, LLPinvestment advisor | 0.9% | Aug 14, 2026 | $4.77M |
| Vanguard Capital Managementinvestment advisor | 0.9% | Aug 13, 2026 | $4.7M |
| NORTHERN TRUST CORPinvestment advisor | 0.9% | Aug 13, 2026 | $4.48M |
| Point72 Asset Management, L.P.investment advisor | 0.8% | May 15, 2026 | $3.89M |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INCinvestment advisor | 0.7% | Aug 14, 2026 | $3.48M |
| AQR CAPITAL MANAGEMENT LLCinvestment advisor | 0.6% | Aug 14, 2026 | $2.96M |
| UBS Group AGbank | 0.5% | Aug 13, 2026 | $2.36M |
| BANK OF AMERICA CORP /DE/holding company | 0.4% | Aug 14, 2026 | $2.04M |
| MARSHALL WACE, LLPinvestment advisor | 0.4% | Aug 13, 2026 | $1.87M |
| JANE STREET GROUP, LLCholding company | 0.3% | Aug 14, 2026 | $1.48M |
| MILLENNIUM MANAGEMENT LLCinvestment advisor | 0.3% | Aug 14, 2026 | $1.47M |
| Massachusetts Financial Services Companyinvestment advisor | 0.2% | Aug 3, 2026 | $1.24M |
5%+ holders
Current stakes of 5% or more from Schedule 13D and 13G filings. A joint filing shows once, under its lead filer.
| Holder | Form | Stake | Filed |
|---|---|---|---|
| FMR LLCinvestment advisorwith Abigail P. Johnson | SC 13G/A | 13.8% | Aug 6, 2026 |
| SCULLY WILLIAM Pindividual | SC 13G/A | 10.3% | May 11, 2026 |
| Fennell Todd W.individual | SC 13G/A | 10.2% | Aug 19, 2026 |
| Wellington Management Company LLPinvestment advisorwith Wellington Group Holdings LLP and 2 others | SC 13G/A | 9.5% | Feb 10, 2025 |
| Rubric Capital Management LPinvestment advisorwith David Rosen | SC 13G/A | 9.3% | May 15, 2026 |
| BlackRock, Inc.holding company | SC 13G/A | 6.9% | Jul 29, 2026 |
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Source: SEC EDGAR Schedule 13D / 13G and 13F filings.