JO
CPRX

John Overdeck’s Catalyst Pharmaceutical CPRX Stock Holding History

John Overdeck’s Portfolio CPRX Stock Details CPRX Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q2 		$954K Buy
+30,354
New +$896K ﹤0.01% 3651
2024
Q4 		– Sell
-159,305
Closed -$3.17M – 3247
2024
Q3 		$3.17M Buy
+159,305
New +$2.95M 0.01% 1357
2023
Q3 		– Sell
-25,400
Closed -$341K – 2987
2023
Q2 		$341K Sell
25,400
-1,159,025
-98% -$16.7M ﹤0.01% 2479
2023
Q1 		$19.6M Sell
1,184,425
-740,665
-38% -$12.2M 0.06% 381
2022
Q4 		$35.8M Buy
1,925,090
+190,367
+11% +$2.93M 0.11% 221
2022
Q3 		$22.3M Buy
1,734,723
+1,271,398
+274% +$15.1M 0.08% 304
2022
Q2 		$3.25M Sell
463,325
-611,957
-57% -$4.49M 0.01% 949
2022
Q1 		$8.91M Buy
1,075,282
+314,203
+41% +$2.22M 0.03% 650
2021
Q4 		$5.15M Buy
761,079
+646,508
+564% +$4.25M 0.01% 1179
2021
Q3 		$607K Sell
114,571
-231,494
-67% -$1.27M ﹤0.01% 3068
2021
Q2 		$1.99M Sell
346,065
-235,188
-40% -$1.21M ﹤0.01% 1871
2021
Q1 		$2.68M Buy
581,253
+212,182
+57% +$843K 0.01% 1483
2020
Q4 		$1.23M Buy
+369,071
New +$1.24M ﹤0.01% 1837
2020
Q3 		– Sell
-426,197
Closed -$1.97M – 3161
2020
Q2 		$1.97M Buy
426,197
+413,126
+3,161% +$1.86M 0.01% 1109
2020
Q1 		$50K Sell
13,071
-699,686
-98% -$2.87M ﹤0.01% 2930
2019
Q4 		$2.67M Buy
+712,757
New +$3.33M 0.01% 1362
2019
Q1 		– Sell
-141,004
Closed -$271K – 3089
2018
Q4 		$271K Buy
+141,004
New +$404K ﹤0.01% 2521
2018
Q3 		– Sell
-21,673
Closed -$68K – 3238
2018
Q2 		$68K Buy
21,673
+2,970
+16% +$9.01K ﹤0.01% 3222
2018
Q1 		$45K Sell
18,703
-388,472
-95% -$1.29M ﹤0.01% 3068
2017
Q4 		$1.59M Buy
+407,175
New +$1.35M 0.01% 1636
2016
Q2 		– Sell
-61,434
Closed -$72K – 2941
2016
Q1 		$72K Buy
+61,434
New +$95.3K ﹤0.01% 2708

Other funds holding CPRX

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
American Century Companies
American Century Companies Kansas City, Missouri $226B AUM 44.75% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $552B AUM 44.19% 1-Year Est. Return
GCL
Glazer Capital LLC New York $4.07B AUM 78.71% 1-Year Est. Return
JP Morgan Chase
JP Morgan Chase New York $1.81T AUM 41.13% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return
HI
HBK Investments Dallas, Texas $10.2B AUM 67.73% 1-Year Est. Return
Morgan Stanley
Morgan Stanley New York $1.89T AUM 35.08% 1-Year Est. Return

John Overdeck's CPRX Position: Q2 2026 in Review

John Overdeck opened a new position in Catalyst Pharmaceutical (CPRX) in Q2 2026: 30,354 shares worth $954K. The stake represents ﹤0.01% of the portfolio and ranks #3651 among its holdings. This is a return to the name: John Overdeck previously reported a position in CPRX as recently as Q3 2024.

John Overdeck first reported a position in CPRX in Q1 2016 and has held it in 21 quarters since. The position peaked at $35.8M in Q4 2022. 392 funds tracked by Wall St. Rank hold CPRX as of Q2 2026.

  • John Overdeck held 30,354 shares of Catalyst Pharmaceutical worth $954K as of Q2 2026.
  • Catalyst Pharmaceutical was a new John Overdeck position in Q2 2026.
  • Catalyst Pharmaceutical made up ﹤0.01% of John Overdeck's portfolio in Q2 2026, its #3651 holding.
  • John Overdeck first reported a position in Catalyst Pharmaceutical in Q1 2016 and has held it in 21 quarters since.
  • John Overdeck's Catalyst Pharmaceutical position peaked at $35.8M in Q4 2022.
  • 392 funds tracked by Wall St. Rank held Catalyst Pharmaceutical as of Q2 2026.

Based on Two Sigma Investments's 13F filing for Q2 2026, filed 14 Aug 2026.