SEC 13F Intelligence

Rock Springs Capital Management LP / PTCT

Rock Springs Capital Management LP’s Ptc Therapeutics Inc Position

Does Rock Springs Capital Management LP own Ptc Therapeutics Inc (PTCT)? Yes — 161.8K shares worth $11M (+0.65% of its 13F portfolio) as of Q1 2026, up from 61.9K shares the prior filed quarter.

Position Value
$11M
Q1 2026
Shares
161.8K
% of Portfolio
+0.65%
Quarters Held
2
currently held

Position History PTCT

Reported value by quarter
Q4 ’25: $5MQ4 ’25Q1 ’26: $11MQ1 ’26filingsflow.com
QuarterSharesValue% of Portfolio
Q1 2026161.8K$11M+0.65%
Q4 202561.9K$5M+0.24%

Common-stock position only; options are excluded. Quarters where the fund filed no 13F or reported no position are absent. See Rock Springs Capital Management LP’s full portfolio or all institutional holders of PTCT.