Ken Griffin
PTCT icon

Ken Griffin’s PTC Therapeutics PTCT Stock Holding History

Ken Griffin’s Portfolio PTCT Stock Details PTCT Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q1 		$26.2M Sell
385,199
-769,256
-67% -$54.5M ﹤0.01% 1996
2025
Q4 		$87.7M Sell
1,154,455
-576,570
-33% -$41.9M 0.01% 946
2025
Q3 		$106M Buy
1,731,025
+810,532
+88% +$42.2M 0.02% 809
2025
Q2 		$45M Sell
920,493
-247,128
-21% -$11.7M 0.01% 1321
2025
Q1 		$59.5M Buy
1,167,621
+709,606
+155% +$35.4M 0.01% 1028
2024
Q4 		$20.7M Buy
458,015
+218,886
+92% +$9.37M ﹤0.01% 2131
2024
Q3 		$8.87M Sell
239,129
-30,950
-11% -$1.04M ﹤0.01% 3110
2024
Q2 		$8.26M Buy
270,079
+241,741
+853% +$7.83M ﹤0.01% 3029
2024
Q1 		$824K Sell
28,338
-262,580
-90% -$7.36M ﹤0.01% 7346
2023
Q4 		$8.02M Buy
290,918
+165,512
+132% +$3.78M ﹤0.01% 3135
2023
Q3 		$2.81M Buy
125,406
+51,098
+69% +$1.9M ﹤0.01% 4596
2023
Q2 		$3.02M Buy
+74,308
New +$3.64M ﹤0.01% 4464
2023
Q1 		– Sell
-1,395
Closed -$63.8K – 15332
2022
Q4 		$53.2K Sell
1,395
-381,590
-100% -$15.9M ﹤0.01% 12042
2022
Q3 		$19.2M Buy
382,985
+306,990
+404% +$15M ﹤0.01% 1911
2022
Q2 		$3.04M Sell
75,995
-18,312
-19% -$642K ﹤0.01% 4733
2022
Q1 		$3.52M Buy
94,307
+77,506
+461% +$2.99M ﹤0.01% 4859
2021
Q4 		$669K Buy
16,801
+10,389
+162% +$398K ﹤0.01% 8945
2021
Q3 		$239K Sell
6,412
-19,111
-75% -$785K ﹤0.01% 11577
2021
Q2 		$1.08M Sell
25,523
-55,453
-68% -$2.38M ﹤0.01% 8180
2021
Q1 		$3.83M Buy
80,976
+47,766
+144% +$2.84M ﹤0.01% 4873
2020
Q4 		$2.03M Buy
33,210
+18,051
+119% +$1.06M ﹤0.01% 5329
2020
Q3 		$709K Sell
15,159
-19,823
-57% -$976K ﹤0.01% 6665
2020
Q2 		$1.77M Sell
34,982
-49,476
-59% -$2.43M ﹤0.01% 4788
2020
Q1 		$3.77M Sell
84,458
-1,314,660
-94% -$66.2M ﹤0.01% 3114
2019
Q4 		$67.2M Sell
1,399,118
-772,498
-36% -$32.8M 0.03% 602
2019
Q3 		$73.4M Buy
2,171,616
+382,672
+21% +$16.7M 0.03% 550
2019
Q2 		$80.5M Sell
1,788,944
-303,251
-14% -$12M 0.04% 483
2019
Q1 		$78.8M Buy
2,092,195
+312,142
+18% +$10.5M 0.04% 474
2018
Q4 		$61.1M Buy
1,780,053
+1,317,478
+285% +$47.4M 0.03% 522
2018
Q3 		$21.7M Buy
462,575
+286,164
+162% +$11.8M 0.01% 1328
2018
Q2 		$5.95M Buy
176,411
+150,387
+578% +$4.69M ﹤0.01% 2537
2018
Q1 		$704K Sell
26,024
-144,007
-85% -$3.65M ﹤0.01% 5318
2017
Q4 		$2.84M Buy
+170,031
New +$2.88M ﹤0.01% 3172
2017
Q3 		– Sell
-39,051
Closed -$765K – 7929
2017
Q2 		$716K Sell
39,051
-2,291
-6% -$30.9K ﹤0.01% 4599
2017
Q1 		$407K Buy
+41,342
New +$500K ﹤0.01% 5377
2016
Q4 		– Sell
-62,442
Closed -$655K – 7720
2016
Q3 		$875K Buy
+62,442
New +$508K ﹤0.01% 4017
2016
Q2 		– Sell
-150,594
Closed -$1.1M – 7277
2016
Q1 		$970K Buy
150,594
+124,168
+470% +$2.16M ﹤0.01% 3531
2015
Q4 		$856K Sell
26,426
-151,698
-85% -$4.46M ﹤0.01% 3776
2015
Q3 		$4.75M Sell
178,124
-69,792
-28% -$2.99M ﹤0.01% 1997
2015
Q2 		$11.9M Buy
247,916
+207,291
+510% +$12.1M 0.01% 1353
2015
Q1 		$2.47M Sell
40,625
-214,554
-84% -$13.1M ﹤0.01% 2805
2014
Q4 		$13.2M Buy
255,179
+16,837
+7% +$741K 0.01% 1209
2014
Q3 		$10.5M Buy
+238,342
New +$7.46M 0.01% 1329
2014
Q2 		– Sell
-122,692
Closed -$3.21M – 8232
2014
Q1 		$3.21M Buy
+122,692
New +$3.3M ﹤0.01% 2158

Other funds holding PTCT

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
RI
RTW Investments New York $10B AUM 135.35% 1-Year Est. Return
Janus Henderson Group
Janus Henderson Group London, United Kingdom $209B AUM 37.72% 1-Year Est. Return
VPM
Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
Wellington Management Group
Wellington Management Group Boston, Massachusetts $535B AUM 26.23% 1-Year Est. Return
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
Toronto Dominion Bank
Toronto Dominion Bank Toronto, Ontario, Ontario, Canada $69.7B AUM 40.86% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return
AC
Armistice Capital New York $5.62B AUM 36.06% 1-Year Est. Return

Ken Griffin's PTCT Position: Q1 2026 in Review

Ken Griffin reduced its PTC Therapeutics (PTCT) stake by 67% in Q1 2026, selling an estimated $54.5M and leaving 385,199 shares worth $26.2M. The position accounts for ﹤0.01% of the portfolio, ranked #1996.

Ken Griffin first reported a position in PTCT in Q1 2014 and has held it in 44 quarters since. The position peaked at $106M in Q3 2025. 351 funds tracked by Wall St. Rank hold PTCT as of Q1 2026.

  • Ken Griffin held 385,199 shares of PTC Therapeutics worth $26.2M as of Q1 2026.
  • Ken Griffin sold 769,256 PTC Therapeutics shares in Q1 2026, an estimated $54.5M.
  • PTC Therapeutics made up ﹤0.01% of Ken Griffin's portfolio in Q1 2026, its #1996 holding.
  • Ken Griffin first reported a position in PTC Therapeutics in Q1 2014 and has held it in 44 quarters since.
  • Ken Griffin's PTC Therapeutics position peaked at $106M in Q3 2025.
  • 351 funds tracked by Wall St. Rank held PTC Therapeutics as of Q1 2026.

Based on Citadel Advisors's 13F filing for Q1 2026, filed 15 May 2026.