Group One Trading
PTCT icon

Group One Trading’s PTC Therapeutics PTCT Stock Holding History

Group One Trading’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
2025
Q3 		– Sell
-5,700
Closed -$278K – 8994
2025
Q2 		$278K Buy
5,700
+1,600
+39% +$76K ﹤0.01% 4000
2025
Q1 		$209K Buy
4,100
+900
+28% +$44.9K ﹤0.01% 3973
2024
Q4 		$144K Sell
3,200
-5,600
-64% -$240K ﹤0.01% 4209
2024
Q3 		$326K Buy
+8,800
New +$295K ﹤0.01% 3187
2024
Q2 		– Sell
-501,300
Closed -$14.6M – 7335
2024
Q1 		$14.6M Buy
501,300
+500,400
+55,600% +$14M 0.06% 285
2023
Q4 		$24.8K Sell
900
-2,000
-69% -$45.7K ﹤0.01% 5582
2023
Q3 		$65K Sell
2,900
-2,700
-48% -$100K ﹤0.01% 4858
2023
Q2 		$228K Buy
+5,600
New +$274K ﹤0.01% 3796
2022
Q3 		– Sell
-300
Closed -$12K – 8089
2022
Q2 		$12K Sell
300
-4,700
-94% -$165K ﹤0.01% 6661
2022
Q1 		$187K Buy
+5,000
New +$193K ﹤0.01% 4864
2021
Q4 		– Sell
-300
Closed -$11K – 8727
2021
Q3 		$11K Buy
+300
New +$12.3K ﹤0.01% 7458
2021
Q2 		– Sell
-7,100
Closed -$336K – 8494
2021
Q1 		$336K Buy
+7,100
New +$422K ﹤0.01% 4468
2020
Q4 		– Sell
-20,900
Closed -$977K – 6903
2020
Q3 		$977K Sell
20,900
-20,000
-49% -$985K ﹤0.01% 2213
2020
Q2 		$2.08M Buy
40,900
+13,300
+48% +$654K 0.01% 1449
2020
Q1 		$1.23M Sell
27,600
-76,000
-73% -$3.83M 0.01% 1371
2019
Q4 		$4.98M Buy
103,600
+14,100
+16% +$599K 0.03% 694
2019
Q3 		$3.03M Buy
89,500
+85,500
+2,138% +$3.72M 0.02% 903
2019
Q2 		$180K Buy
4,000
+3,800
+1,900% +$150K ﹤0.01% 2937
2019
Q1 		$8K Sell
200
-69,400
-100% -$2.33M ﹤0.01% 4340
2018
Q4 		$2.39M Sell
69,600
-24,100
-26% -$867K 0.02% 919
2018
Q3 		$4.4M Sell
93,700
-31,400
-25% -$1.3M 0.03% 658
2018
Q2 		$4.22M Sell
125,100
-56,100
-31% -$1.75M 0.04% 634
2018
Q1 		$4.9M Sell
181,200
-703,600
-80% -$17.8M 0.05% 485
2017
Q4 		$14.8M Buy
884,800
+317,100
+56% +$5.37M 0.1% 215
2017
Q3 		$11.4M Buy
567,700
+332,400
+141% +$6.51M 0.1% 223
2017
Q2 		$4.31M Sell
235,300
-289,000
-55% -$3.89M 0.04% 529
2017
Q1 		$5.16M Buy
524,300
+316,400
+152% +$3.83M 0.06% 391
2016
Q4 		$2.27M Buy
207,900
+82,700
+66% +$868K 0.02% 848
2016
Q3 		$1.75M Buy
125,200
+38,200
+44% +$311K 0.02% 919
2016
Q2 		$611K Sell
87,000
-12,100
-12% -$88.7K 0.01% 1589
2016
Q1 		$638K Sell
99,100
-41,300
-29% -$717K 0.01% 1505
2015
Q4 		$4.55M Sell
140,400
-7,200
-5% -$212K 0.05% 418
2015
Q3 		$3.94M Buy
147,600
+88,800
+151% +$3.8M 0.05% 432
2015
Q2 		$2.83M Buy
58,800
+40,200
+216% +$2.35M 0.04% 559
2015
Q1 		$1.13M Sell
18,600
-1,400
-7% -$85.4K 0.02% 976
2014
Q4 		$1.03M Buy
+20,000
New +$880K 0.02% 1054

Other funds holding PTCT

BlackRock
BlackRock New York $5.72T AUM 30.48% 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 $1.91T AUM
State Street
State Street Boston, Massachusetts $2.9T AUM 29.55% 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 $4.04T 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 $1.61T AUM 30.72% 1-Year Est. Return
AC
Armistice Capital New York $5.62B AUM 36.06% 1-Year Est. Return

Group One Trading's PTCT Position: Q1 2026 in Review

Group One Trading opened a new position in PTC Therapeutics (PTCT) in Q1 2026: 52,713 shares worth $3.59M. The stake represents 0.01% of the portfolio and ranks #1561 among its holdings. This is a return to the name: Group One Trading previously reported a position in PTCT as recently as Q3 2025.

Group One Trading first reported a position in PTCT in Q4 2014 and has held it in 32 quarters since. The position peaked at $9.5M in Q4 2017. 349 funds tracked by Wall St. Rank hold PTCT as of Q1 2026.

  • Group One Trading held 52,713 shares of PTC Therapeutics worth $3.59M as of Q1 2026.
  • PTC Therapeutics was a new Group One Trading position in Q1 2026.
  • PTC Therapeutics made up 0.01% of Group One Trading's portfolio in Q1 2026, its #1561 holding.
  • Group One Trading first reported a position in PTC Therapeutics in Q4 2014 and has held it in 32 quarters since.
  • Group One Trading's PTC Therapeutics position peaked at $9.5M in Q4 2017.
  • 349 funds tracked by Wall St. Rank held PTC Therapeutics as of Q1 2026.

Based on Group One Trading's 13F filing for Q1 2026, filed 13 May 2026.