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Ken Griffin's Catalyst Pharmaceuticals, Inc. (CPRX) position

Yes: as of Q1 2026, Ken Griffin holds 581K shares of CPRX worth $14M (0.0% of the disclosed portfolio). Held since at least Q1 2021; that opening coverage snapshot is not counted as a purchase.
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Current value
$14M
Shares held
581K
% of portfolio
0.0%
Est. average buy price (i)
$22.46
est. since Q1 2023
Quarter-end price
$24.76

Estimated trade prices

Average price in quarters with purchases
$17.12
Average prices in quarters with sales
  • Q4 2025: $22.28 (89K shares sold)
  • Q2 2025: $23.61 (425K shares sold)
  • Q3 2024: $18.54 (558K shares sold)
  • Q2 2024: $15.57 (536K shares sold)
  • Q2 2023: $14.39 (265K shares sold)
  • Q2 2022: $7.33 (19K shares sold)
  • Q4 2021: $6.58 (72K shares sold)

CPRX price vs Griffin's position

1Y 3Y 5Y MAX
Dates
$4$20$4020222023202420252026Added 54K shares (25.8%) · Q3 2021. Average closing price $5.47 · Price range $4.85–$6.0454KsharespurchasedSold 72K shares (27.8%) · Q4 2021. Average closing price $6.58 · Price range $5.21–$7.4572KsharessoldAdded 25K shares (13.4%) · Q1 2022. Average closing price $7.07 · Price range $5.31–$8.3125KsharespurchasedSold 19K shares (9.1%) · Q2 2022. Average closing price $7.33 · Price range $6.23–$8.5719KsharessoldNew position of 46K shares · Q4 2022. Average closing price $15.40 · Price range $12.25–$19.5046KsharespurchasedSold 265K shares (61.6%) · Q2 2023. Average closing price $14.39 · Price range $11.50–$18.08265KsharessoldAdded 316K shares (191.2%) · Q3 2023. Average closing price $13.38 · Price range $11.69–$15.02316KsharespurchasedAdded 29K shares (6.1%) · Q4 2023. Average closing price $13.67 · Price range $11.78–$17.2929KsharespurchasedAdded 608K shares (119.3%) · Q1 2024. Average closing price $15.07 · Price range $13.18–$17.11608KsharespurchasedSold 536K shares (47.9%) · Q2 2024. Average closing price $15.57 · Price range $14.68–$16.92536KsharessoldSold 558K shares (95.7%) · Q3 2024. Average closing price $18.54 · Price range $15.19–$21.35558KsharessoldAdded 411K shares (over 1,000%) · Q4 2024. Average closing price $21.48 · Price range $19.73–$23.93411KsharespurchasedAdded 249K shares (57.0%) · Q1 2025. Average closing price $22.52 · Price range $19.53–$25.74249KsharespurchasedSold 425K shares (62.1%) · Q2 2025. Average closing price $23.61 · Price range $21.40–$26.31425KsharessoldAdded 138K shares (53.0%) · Q3 2025. Average closing price $20.56 · Price range $19.13–$22.22138KsharespurchasedSold 89K shares (22.5%) · Q4 2025. Average closing price $22.28 · Price range $20.31–$24.4589KsharessoldAdded 273K shares (88.4%) · Q1 2026. Average closing price $23.82 · Price range $22.33–$25.22273Ksharespurchased← Earlier —1 purchase
Average closing price · filing quarter
$23.82
Price range · filing quarter
$22.33 – $25.22
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Every quarterly change

Quarter Action Shares change Est. value change Δ Own Shares held Filing date
Q1 2026 Added +273K +$6.5M +88.4% 581K May 15, 2026
Q4 2025 Reduced −89K −$2.0M −22.5% 308K Feb 17, 2026
Q3 2025 Added +138K +$2.8M +53.0% 398K Nov 14, 2025
Q2 2025 Reduced −425K −$10M −62.1% 260K Aug 14, 2025
Q1 2025 Added +249K +$5.6M +57.0% 685K May 15, 2025
Q4 2024 Added +411K +$8.8M +1,629.4% 436K Feb 14, 2025
Q3 2024 Reduced −558K −$10M −95.7% 25K Nov 14, 2024
Q2 2024 Reduced −536K −$8.3M −47.9% 583K Aug 14, 2024
Q1 2024 Added +608K +$9.2M +119.3% 1.1M May 15, 2024
Q4 2023 Added +29K +$400K +6.1% 510K Feb 14, 2024
Q3 2023 Added +316K +$4.2M +191.2% 481K Nov 14, 2023
Q2 2023 Reduced −265K −$3.8M −61.6% 165K Aug 14, 2023
Q1 2023 First covered – – – 430K May 15, 2023
Q4 2022 New +46K +$704K – 46K Feb 14, 2023
Q2 2022 Reduced −19K −$143K −9.1% 194K Aug 15, 2022
Q1 2022 Added +25K +$178K +13.4% 213K May 16, 2022
Q4 2021 Reduced −72K −$476K −27.8% 188K Feb 14, 2022
Q3 2021 Added +54K +$293K +25.8% 261K Nov 15, 2021
Q2 2021 Added +164K +$844K +375.6% 207K Aug 16, 2021
Q1 2021 First covered – – – 44K May 21, 2021
Data through Q1 2026 · filed May 15, 2026
20 grouped rows from 20 quarters

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Common questions

Does Ken Griffin own CPRX?

Yes. As of Q1 2026, Ken Griffin disclosed 581K shares of CPRX, worth $14M. All figures come from SEC 13F filings for Q1 2026, the latest disclosed quarter.

When did Ken Griffin buy CPRX?

Ken Griffin held CPRX since at least Q1 2021, when this filing coverage begins; the opening snapshot is not a disclosed purchase. All figures come from SEC 13F filings for Q1 2026, the latest disclosed quarter.

Did Ken Griffin sell CPRX?

The quarter-by-quarter table above shows each sale and reduction Ken Griffin disclosed in CPRX. All figures come from SEC 13F filings for Q1 2026, the latest disclosed quarter.

How many shares of CPRX does Ken Griffin own?

Ken Griffin disclosed 581K shares of CPRX as of Q1 2026. All figures come from SEC 13F filings for Q1 2026, the latest disclosed quarter.

What price did Ken Griffin pay for CPRX?

Ken Griffin began building the CPRX position before our 13F history starts, so an exact average buy price cannot be estimated without understating it. All figures come from SEC 13F filings for Q1 2026, the latest disclosed quarter.

How are the estimated trade prices calculated?

13F filings disclose quarter-end holdings, not trade dates or execution prices. These estimates use each covered quarter's average market price; the add average excludes the opening position and quarters without price data. All figures come from SEC 13F filings for Q1 2026, the latest disclosed quarter.