CATALYST PHARMACEUTICALS INC (CPRX) Stock Institutional Trading Activity


CATALYST PHARMACEUTICALS INC (CPRX) position changes reported by tracked institutional filers across multiple SEC 13F reporting periods. Based on recent SEC 13F filings (Q4 2025), investors with some of the largest reported share count changes include Renaissance Technologies LLC and Fundsmith. Explore insights into buying and selling patterns, position changes, and investment conviction levels to understand institutional trading behavior and market dynamics.

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Portfolio quarterNameTypeQuantityRemainingReported stock balance
Q1 2016Renaissance Technologies LLCBuy154,573175,800$206
Q1 2015Renaissance Technologies LLCSell-175,27321,227$92
Q3 2014Renaissance Technologies LLCBuy58,000196,500$652
Q3 2013Renaissance Technologies LLCBuy138,500138,500$422

Frequently asked questions about CPRX activity

  • Which institutional owners are buying CPRX?

    Institutional owners buying CPRX include investors who have either initiated new positions or increased their existing holdings based on recent SEC 13F filings. The activity table above highlights which funds added shares in the latest reporting periods and how their positions changed over time.

  • What does "buy" mean in CPRX activity?

    "Buy" means an investor increased their reported position in CPRX compared to the prior reporting period. This reflects growing exposure to CATALYST PHARMACEUTICALS INC (CPRX) rather than necessarily a brand-new position (though new positions also appear as buys when prior quantity was zero).

  • Is institutional interest in CPRX increasing?

    Institutional interest in CPRX can be assessed by comparing the number of tracked funds adding or increasing positions versus those trimming or exiting across the periods shown. A higher number of additions typically signals increasing participation among large filers, but it should be read alongside position sizes and the full table.