Question 1

How many shares of PTCT does D. E. Shaw & Co., Inc. own?

Accepted Answer

As of 2026-Q2, D. E. Shaw & Co., Inc. holds 1.5M shares of PTCT (PTC THERAPEUTICS INC).

Question 2

What is D. E. Shaw & Co., Inc.'s PTCT position worth?

Accepted Answer

As of 2026-Q2, D. E. Shaw & Co., Inc.'s PTCT position is worth $126.3M.

Question 3

Is D. E. Shaw & Co., Inc. buying or selling PTCT?

Accepted Answer

In 2026-Q2, D. E. Shaw & Co., Inc. decreased their PTCT position (-5.6% change in shares).

Question 4

When did D. E. Shaw & Co., Inc. first buy PTCT?

Accepted Answer

Based on available 13F filings, D. E. Shaw & Co., Inc. first reported a position in PTCT in 2024-Q3. They have held the position across 31 quarters.

Quarter	Action	Shares	Change	Value	Weight	Price	Conviction
2026-Q2 Latest	Decreased	1.5M	-5.6%	$126.3M	0.1%	$81.57	0
2026-Q1	Decreased	1.6M	-6.0%	$111.8M	0.1%	$64.39	0
2025-Q4	Decreased	1.7M	-19.8%	$132.5M	0.1%	$76.19	0
2025-Q3	Decreased	2.2M	-10.8%	$133.5M	0.1%	$60.65	0
2025-Q2	Increased	2.4M	+68.7%	$119.1M	0.1%	$49.84	45
2025-Q1	Decreased	1.4M	-6.3%	$73.7M	0.1%	$54.24	0
2024-Q4	Increased	1.5M	+8.7%	$69.6M	0.1%	$45.77	32
2024-Q3	Increased	1.4M	+4.6%	$52.7M	0.0%	$37.56	31

PTCTShowing 8 of 31 quarters

PTCT
Showing 8 of 31 quarters