Stock Ownership/CPRX

CATALYST PHARMACEUTICALS INC (CPRX): Ownership & Insider Activity

Hedge funds and institutional managers reporting a position in CPRX. Based on the most recent 13F filing from each holder, sourced from SEC EDGAR.

Reported Holders
19
13F filers
Aggregate Value
$356.2M
Across holders
Last Price
$31.50
2026-06-26
Sector
—
GICS
Quarterly fund activity12 increased6 reduced6 exited
Full exits: Fisher Asset Management, LLC, JUPITER ASSET MANAGEMENT LTD, TUDOR INVESTMENT CORP ET AL, CAPSTONE INVESTMENT ADVISORS, LLC, Fundsmith LLP, Walleye Capital LLC
Institutional Holders of CPRX
↗
19 holders
Manager⇅Type⇅Shares⇅Market Value▼% of Total⇅% of Portfolio⇅Action⇅QoQ Change⇅Quarter⇅
HBK INVESTMENTS L P
CIK 0001011443
Hedge Fund2.82M$88.6M24.9%0.9%Added—Q2 2026
Qube Research & Technologies Ltd
CIK 0001729829
Hedge Fund2.25M$70.9M19.9%0.1%Added+$57.9MQ2 2026
RENAISSANCE TECHNOLOGIES LLC
CIK 0001037389
Hedge Fund2.14M$67.1M18.8%0.1%Reduced$-6.6MQ2 2026
MILLENNIUM MANAGEMENT LLC
CIK 0001273087
Hedge Fund1.07M$33.6M9.4%0.0%Added+$33.0MQ2 2026
MARSHALL WACE, LLP
CIK 0001318757
Hedge Fund912K$28.7M8.0%0.0%Added+$16.0MQ2 2026
ARROWSTREET CAPITAL, LIMITED PARTNERSHIP
CIK 0001164508
Hedge Fund749K$23.5M6.6%0.0%Reduced$-6.5MQ2 2026
SOROS FUND MANAGEMENT LLC
CIK 0001029160
Family Office345K$10.8M3.0%0.1%Added—Q2 2026
Man Group plc
CIK 0001637460
Hedge Fund250K$7.9M2.2%0.0%Added+$2.5MQ2 2026
Point72 Asset Management, L.P.
CIK 0001603466
Hedge Fund177K$5.5M1.6%0.0%Reduced$-7.8MQ2 2026
SHAW D E & CO INC
CIK 0001009207
Hedge Fund135K$4.2M1.2%0.0%Added+$3.0MQ2 2026
HBK INVESTMENTS L PAdded
Hedge Fund
$88.6M· 24.9% of total· 0.9% port· 2.82M sh· — QoQ· Q2 2026
Qube Research & Technologies LtdAdded
Hedge Fund
$70.9M· 19.9% of total· 0.1% port· 2.25M sh· +$57.9M QoQ· Q2 2026
RENAISSANCE TECHNOLOGIES LLCReduced
Hedge Fund
$67.1M· 18.8% of total· 0.1% port· 2.14M sh· $-6.6M QoQ· Q2 2026
MILLENNIUM MANAGEMENT LLCAdded
Hedge Fund
$33.6M· 9.4% of total· 0.0% port· 1.07M sh· +$33.0M QoQ· Q2 2026
MARSHALL WACE, LLPAdded
Hedge Fund
$28.7M· 8.0% of total· 0.0% port· 912K sh· +$16.0M QoQ· Q2 2026
ARROWSTREET CAPITAL, LIMITED PARTNERSHIPReduced
Hedge Fund
$23.5M· 6.6% of total· 0.0% port· 749K sh· $-6.5M QoQ· Q2 2026
SOROS FUND MANAGEMENT LLCAdded
Family Office
$10.8M· 3.0% of total· 0.1% port· 345K sh· — QoQ· Q2 2026
Man Group plcAdded
Hedge Fund
$7.9M· 2.2% of total· 0.0% port· 250K sh· +$2.5M QoQ· Q2 2026
Point72 Asset Management, L.P.Reduced
Hedge Fund
$5.5M· 1.6% of total· 0.0% port· 177K sh· $-7.8M QoQ· Q2 2026
SHAW D E & CO INCAdded
Hedge Fund
$4.2M· 1.2% of total· 0.0% port· 135K sh· +$3.0M QoQ· Q2 2026
Schonfeld Strategic Advisors LLCAdded
Hedge Fund
$4.0M· 1.1% of total· 0.0% port· 127K sh· — QoQ· Q2 2026
Woodline Partners LPUnchanged
Hedge Fund
$3.2M· 0.9% of total· 0.0% port· 100K sh· +$0 QoQ· Q2 2026
CITADEL ADVISORS LLCReduced
Hedge Fund
$2.7M· 0.8% of total· 0.0% port· 85K sh· +$1.5M QoQ· Q2 2026
AQR CAPITAL MANAGEMENT LLCReduced
Hedge Fund
$1.8M· 0.5% of total· 0.0% port· 57K sh· +$1.6M QoQ· Q2 2026
Gotham Asset Management, LLCReduced
Hedge Fund
$1.3M· 0.4% of total· 0.0% port· 41K sh· $-633K QoQ· Q2 2026
TWO SIGMA INVESTMENTS, LPAdded
Hedge Fund
$954K· 0.3% of total· 0.0% port· 30K sh· — QoQ· Q2 2026
Rockefeller Capital Management L.P.Added
Hedge Fund
$620K· 0.2% of total· 0.0% port· 20K sh· $-1.0M QoQ· Q2 2026
GAMCO INVESTORS, INC. ET ALAdded
Institutional Manager
$440K· 0.1% of total· 0.0% port· 14K sh· — QoQ· Q2 2026
Squarepoint Ops LLCAdded
Hedge Fund
$369K· 0.1% of total· 0.0% port· 12K sh· — QoQ· Q2 2026
1–10 of 19
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