Hudson Bay Capital Management’s PTC Therapeutics PTCT Stock Holding History

Hudson Bay Capital Management’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 Q2	$13M	Buy	159,778 +156,108	+4,254%	+$11.3M	0.04%	305
2026 Q1	$250K	Buy	+3,670	New	+$260K	﹤0.01%	1067
2024 Q1	–	Sell	-30,000	Closed	-$827K	–	855
2023 Q4	$827K	Hold	30,000	–	–	0.01%	534
2023 Q3	$672K	Buy	+30,000	New	+$1.12M	0.01%	593
2023 Q1	–	Sell	-42,500	Closed	-$1.62M	–	962
2022 Q4	$1.62M	Sell	42,500 -17,500	-29%	-$728K	0.02%	632
2022 Q3	$3.01M	Sell	60,000 -15,000	-20%	-$735K	0.03%	596
2022 Q2	$3M	Hold	75,000	–	–	0.02%	641
2022 Q1	$2.8M	Hold	75,000	–	–	0.04%	606
2021 Q4	$2.99M	Sell	75,000 -15,000	-17%	-$574K	0.03%	543
2021 Q3	$3.35M	Buy	90,000 +30,000	+50%	+$1.23M	0.05%	492
2021 Q2	$2.54M	Buy	+60,000	New	+$2.57M	0.03%	557
2019 Q4	–	Sell	-30,000	Closed	-$1.01M	–	491
2019 Q3	$1.01M	Buy	30,000 +25,000	+500%	+$1.09M	0.03%	315
2019 Q2	$225K	Sell	5,000 -20,000	-80%	-$790K	0.01%	371
2019 Q1	$941K	Buy	+25,000	New	+$839K	0.01%	568
2018 Q2	–	Sell	-50,000	Closed	-$1.35M	–	942
2018 Q1	$1.35M	Sell	50,000 -10,000	-17%	-$253K	0.03%	523
2017 Q4	$1M	Buy	+60,000	New	+$1.02M	0.02%	395

Other funds holding PTCT

BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return

RTW Investments New York $11.7B AUM 174.13% 1-Year Est. Return

Jupiter Topco New York $245B AUM

Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM

State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return

Wellington Management Group Boston, Massachusetts $580B AUM 38.23% 1-Year Est. Return

Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM

Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return

Toronto Dominion Bank Toronto, Ontario, Ontario, Canada $86.4B AUM 59.51% 1-Year Est. Return

Westfield Capital Management Boston, Massachusetts $30.6B AUM 61.81% 1-Year Est. Return

Hudson Bay Capital Management's PTCT Position: Q2 2026 in Review

Hudson Bay Capital Management increased its PTC Therapeutics (PTCT) stake by 4,254% in Q2 2026, buying an estimated $11.3M and bringing the position to 159,778 shares worth $13M. The position accounts for 0.04% of the portfolio, ranked #305.

Hudson Bay Capital Management first reported a position in PTCT in Q4 2017 and has held it in 16 quarters since. 382 funds tracked by Wall St. Rank hold PTCT as of Q2 2026.

Hudson Bay Capital Management held 159,778 shares of PTC Therapeutics worth $13M as of Q2 2026.
Hudson Bay Capital Management bought 156,108 PTC Therapeutics shares in Q2 2026, an estimated $11.3M.
PTC Therapeutics made up 0.04% of Hudson Bay Capital Management's portfolio in Q2 2026, its #305 holding.
Hudson Bay Capital Management first reported a position in PTC Therapeutics in Q4 2017 and has held it in 16 quarters since.
382 funds tracked by Wall St. Rank held PTC Therapeutics as of Q2 2026.

Based on Hudson Bay Capital Management's 13F filing for Q2 2026, filed 14 Aug 2026.