Who owns Catalyst Pharmaceuticals (CPRX)
Which tracked institutional funds hold CPRX, how they are positioned, and who is buying versus exiting — from SEC Form 13F-HR filings. See CPRX company fundamentals →
Ownership as of the 2026-Q2 13F filings (latest filed 2026-09-22). 13F is disclosed up to 45 days after quarter-end, so the most recent quarter fills in over the following weeks.
Conviction spread
CPRX’s largest tracked holder by dollar value, BlackRock, Inc., sizes it at 0.0% of its own reported 13F book, while the median holder sizes it at 0.0% of theirs — a 0.0pp gap the other way — the median holder sizes CPRX more heavily than its largest holder by dollar value does.
Book-share is each fund’s reported value in CPRX divided by its whole reported 13F book, so it is comparable across funds of different sizes and is unaffected by stock splits. A higher share means a fund has committed more of its book to the name — a starting question about conviction, not a verdict or a signal to trade.
Institutional & insider positioning
Between 2026-Q1 and 2026-Q2, we do not read how tracked institutions changed their CPRX positions: many holders could not be matched across the two filings, most often because the security’s identifier changed and our mapping is incomplete, or because funds are still filing for the newer quarter. Over the same quarter, there were no open-market insider Form 4s.
This fuses two public signals for the same quarter — how tracked institutions changed their positions and whether insiders bought or sold in the open market. It describes what was filed; it is a starting question, not a verdict or a signal to trade.
New buyers & exits
Institutional holders
One row per tracked fund, most shares held first (every row is from one quarter; reported value breaks ties). “% of value” is the fund’s share of this security’s tracked institutional value — not of shares outstanding.
| Fund | Shares | Reported value | % of value | Quarter |
|---|---|---|---|---|
| BlackRock, Inc. added | 19,158,785 | $602M | 19.6% | 2026-Q2 |
| STATE STREET CORP added | 7,627,036 | $240M | 7.8% | 2026-Q2 |
| AMERICAN CENTURY COMPANIES INC added | 5,553,921 | $175M | 5.7% | 2026-Q2 |
| VANGUARD CAPITAL MANAGEMENT LLC added | 5,135,345 | $161M | 5.3% | 2026-Q2 |
| DIMENSIONAL FUND ADVISORS LP added | 3,634,171 | $114M | 3.7% | 2026-Q2 |
| JPMORGAN CHASE & CO added | 3,169,902 | $100M | 3.3% | 2026-Q2 |
| GEODE CAPITAL MANAGEMENT, LLC added | 3,150,256 | $99M | 3.2% | 2026-Q2 |
| HBK INVESTMENTS L P new | 2,820,302 | $89M | 2.9% | 2026-Q2 |
| MORGAN STANLEY added | 2,760,358 | $87M | 2.8% | 2026-Q2 |
| VANGUARD PORTFOLIO MANAGEMENT LLC trimmed | 2,428,922 | $76M | 2.5% | 2026-Q2 |
| Jupiter Topco LLC new | 2,277,822 | $72M | 2.3% | 2026-Q2 |
| Qube Research & Technologies Ltd added | 2,254,355 | $71M | 2.3% | 2026-Q2 |
| RENAISSANCE TECHNOLOGIES LLC trimmed | 2,136,077 | $67M | 2.2% | 2026-Q2 |
| Boston Partners trimmed | 1,658,936 | $52M | 1.7% | 2026-Q2 |
| NEXPOINT ASSET MANAGEMENT, L.P. new | 1,602,557 | $50M | 1.6% | 2026-Q2 |
| UBS Group AG added | 1,453,726 | $46M | 1.5% | 2026-Q2 |
| NORTHERN TRUST CORP added | 1,330,520 | $42M | 1.4% | 2026-Q2 |
| BANK OF AMERICA CORP /DE/ trimmed | 1,311,366 | $41M | 1.3% | 2026-Q2 |
| GOLDMAN SACHS GROUP INC added | 1,194,200 | $38M | 1.2% | 2026-Q2 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC trimmed | 1,159,456 | $36M | 1.2% | 2026-Q2 |
| Polar Asset Management Partners Inc. new | 1,150,300 | $36M | 1.2% | 2026-Q2 |
| MILLENNIUM MANAGEMENT LLC added | 1,068,724 | $34M | 1.1% | 2026-Q2 |
| WATER ISLAND CAPITAL LLC new | 933,819 | $29M | 1.0% | 2026-Q2 |
| MARSHALL WACE, LLP added | 911,700 | $29M | 0.9% | 2026-Q2 |
| KENNEDY CAPITAL MANAGEMENT LLC trimmed | 856,609 | $27M | 0.9% | 2026-Q2 |
| VANGUARD FIDUCIARY TRUST CO added | 830,669 | $26M | 0.9% | 2026-Q2 |
| HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND new | 795,700 | $25M | 0.8% | 2026-Q2 |
| Swedbank AB added | 775,032 | $24M | 0.8% | 2026-Q2 |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP trimmed | 748,924 | $24M | 0.8% | 2026-Q2 |
| Bank of New York Mellon Corp added | 703,228 | $22M | 0.7% | 2026-Q2 |
| PRINCIPAL FINANCIAL GROUP INC added | 683,270 | $21M | 0.7% | 2026-Q2 |
| AQR Arbitrage LLC new | 674,223 | $21M | 0.7% | 2026-Q2 |
| SYSTEMATIC FINANCIAL MANAGEMENT LP trimmed | 667,883 | $21M | 0.7% | 2026-Q2 |
| FIL Ltd new | 650,000 | $20M | 0.7% | 2026-Q2 |
| Sagefield Capital LP new | 569,481 | $18M | 0.6% | 2026-Q2 |
| GLENMEDE TRUST CO NA trimmed | 501,212 | $16M | 0.5% | 2026-Q2 |
| Invesco Ltd. trimmed | 445,990 | $14M | 0.5% | 2026-Q2 |
| Nuveen, LLC added | 437,351 | $14M | 0.4% | 2026-Q2 |
| GABLES CAPITAL MANAGEMENT INC. trimmed | 419,181 | $13M | 0.4% | 2026-Q2 |
| First Trust Capital Management L.P. new | 416,209 | $13M | 0.4% | 2026-Q2 |
| Public Sector Pension Investment Board trimmed | 395,192 | $12M | 0.4% | 2026-Q2 |
| JW Asset Management, LLC | 388,392 | $12M | 0.4% | 2026-Q2 |
| Allianz Asset Management GmbH | 372,989 | $9M | 0.3% | 2026-Q2 |
| WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC trimmed | 371,530 | $12M | 0.4% | 2026-Q2 |
| FMR LLC added | 360,468 | $11M | 0.4% | 2026-Q2 |
| ROYCE & ASSOCIATES LP trimmed | 358,642 | $11M | 0.4% | 2026-Q2 |
| SOROS FUND MANAGEMENT LLC new | 344,593 | $11M | 0.4% | 2026-Q2 |
| RAYMOND JAMES FINANCIAL INC trimmed | 296,780 | $9M | 0.3% | 2026-Q2 |
| OBERWEIS ASSET MANAGEMENT INC/ trimmed | 293,670 | $9M | 0.3% | 2026-Q2 |
| WINTON GROUP Ltd added | 287,736 | $9M | 0.3% | 2026-Q2 |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC added | 284,154 | $9M | 0.3% | 2026-Q2 |
| FIRST TRUST ADVISORS LP trimmed | 282,887 | $9M | 0.3% | 2026-Q2 |
| Legal & General Group Plc added | 275,513 | $9M | 0.3% | 2026-Q2 |
| PICTON MAHONEY ASSET MANAGEMENT added | 275,000 | $9M | 0.3% | 2026-Q2 |
| RHUMBLINE ADVISERS trimmed | 272,465 | $9M | 0.3% | 2026-Q2 |
| GABELLI FUNDS LLC new | 267,750 | $8M | 0.3% | 2026-Q2 |
| Groupe la Francaise new | 256,497 | $8M | 0.3% | 2026-Q2 |
| Man Group plc added | 250,000 | $8M | 0.3% | 2026-Q2 |
| Melqart Asset Management (UK) Ltd new | 247,556 | $8M | 0.3% | 2026-Q2 |
| AMERIPRISE FINANCIAL INC trimmed | 238,981 | $8M | 0.2% | 2026-Q2 |
| Swiss National Bank trimmed | 220,600 | $7M | 0.2% | 2026-Q2 |
| THIRD AVENUE MANAGEMENT LLC | 210,161 | $7M | 0.2% | 2026-Q2 |
| CREDIT INDUSTRIEL ET COMMERCIAL new | 193,503 | $6M | 0.2% | 2026-Q2 |
| Creative Planning added | 187,728 | $6M | 0.2% | 2026-Q2 |
| DEUTSCHE BANK AG\ added | 186,874 | $6M | 0.2% | 2026-Q2 |
| Moran Wealth Management, LLC added | 180,915 | $6M | 0.2% | 2026-Q2 |
| Point72 Asset Management, L.P. trimmed | 176,560 | $6M | 0.2% | 2026-Q2 |
| Linden Thomas Advisory Services, LLC added | 176,004 | $6M | 0.2% | 2026-Q2 |
| GABELLI & Co INVESTMENT ADVISERS, INC. new | 159,003 | $5M | 0.2% | 2026-Q2 |
| PRICE T ROWE ASSOCIATES INC /MD/ trimmed | 158,614 | $5M | 0.2% | 2026-Q2 |
| ROYAL BANK OF CANADA trimmed | 152,913 | $5M | 0.2% | 2026-Q2 |
| Bridge City Capital, LLC trimmed | 152,684 | $5M | 0.2% | 2026-Q2 |
| HARVEST MANAGEMENT LLC new | 150,000 | $5M | 0.2% | 2026-Q2 |
| ALLIANCEBERNSTEIN L.P. added | 148,550 | $4M | 0.1% | 2026-Q2 |
| CITIGROUP INC added | 136,669 | $4M | 0.1% | 2026-Q2 |
| D. E. Shaw & Co., Inc. added | 134,531 | $4M | 0.1% | 2026-Q2 |
| VICTORY CAPITAL MANAGEMENT INC trimmed | 132,072 | $4M | 0.1% | 2026-Q2 |
| WELLS FARGO & COMPANY/MN added | 130,234 | $4M | 0.1% | 2026-Q2 |
| Schonfeld Strategic Advisors LLC added | 127,302 | $4M | 0.1% | 2026-Q2 |
| COMMONWEALTH OF PENNSYLVANIA PUBLIC SCHOOL EMPLS RETRMT SYS added | 127,280 | $4M | 0.1% | 2026-Q2 |
| Maven Securities LTD new | 124,040 | $4M | 0.1% | 2026-Q2 |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM trimmed | 123,943 | $4M | 0.1% | 2026-Q2 |
| Advisors Asset Management, Inc. trimmed | 123,743 | $4M | 0.1% | 2026-Q2 |
| ASSETMARK, INC added | 123,492 | $4M | 0.1% | 2026-Q2 |
| Chicago Capital Management, LLC new | 122,650 | $3M | 0.1% | 2026-Q2 |
| PRUDENTIAL FINANCIAL INC trimmed | 119,969 | $4M | 0.1% | 2026-Q2 |
| FRANKLIN RESOURCES INC trimmed | 119,516 | $4M | 0.1% | 2026-Q2 |
| Cyndeo Wealth Partners, LLC | 118,444 | $4M | 0.1% | 2026-Q2 |
| ABC ARBITRAGE SA new | 117,681 | $4M | 0.1% | 2026-Q2 |
| Kintayl Capital LP new | 114,111 | $4M | 0.1% | 2026-Q2 |
| CLARK ESTATES INC/NY | 113,918 | $4M | 0.1% | 2026-Q2 |
| Cresset Asset Management, LLC added | 108,452 | $3M | 0.1% | 2026-Q2 |
| Russell Investments Group, Ltd. added | 108,287 | $3M | 0.1% | 2026-Q2 |
| NFJ INVESTMENT GROUP, LLC new | 105,754 | $3M | 0.1% | 2026-Q2 |
| Assenagon Asset Management S.A. trimmed | 103,269 | $3M | 0.1% | 2026-Q2 |
| Woodline Partners LP | 100,478 | $3M | 0.1% | 2026-Q2 |
| CAMPBELL NEWMAN ASSET MANAGEMENT INC added | 96,690 | $3M | 0.1% | 2026-Q2 |
| Carmignac Gestion new | 95,603 | $3M | 0.1% | 2026-Q2 |
| INTECH INVESTMENT MANAGEMENT LLC added | 94,087 | $3M | 0.1% | 2026-Q2 |
| NEW YORK STATE COMMON RETIREMENT FUND added | 90,003 | $3M | 0.1% | 2026-Q2 |
Ownership over time
Tracked institutional holder count and total shares held by filing quarter (independent scales). The curated-era tail and any mid-ingest latest quarter are handled honestly — a partial quarter is not drawn as a collapse.
Reading this table
Funds hold the same stock for different reasons — an index fund “holds” almost everything, an active manager sizes a name to a mandate and a benchmark, and each fund entered at its own price and time. Because 13F is filed up to 45 days after quarter-end, every row is a backward-looking snapshot; a manager may have traded since. Share-class siblings (a company’s A and C shares) are rolled up to one line so a dual-class name is never double-counted. Compare like-for-like. A large holder is not an endorsement, and a fund exiting is not a warning — this is a starting question, not a verdict.
About 13F filings
A Form 13F is a quarterly disclosure that institutional investment managers with over $100 million in US-listed equities must file with the SEC. In plain English: it is a snapshot of the long stock positions a fund held at the end of a quarter. It covers long US-listed equities only — not short positions, options, cash, or private holdings — and the funds shown are the large sample we track, not the complete 13F universe.