SEC 13F Intelligence

Octagon Capital Advisors LP / XLRN

Octagon Capital Advisors LP’s Acceleron Pharma Inc Position

Does Octagon Capital Advisors LP own Acceleron Pharma Inc (XLRN)? Not currently — the last reported position was 112.4K shares worth $14M in Q2 2021; the fund’s latest 13F (Q1 2026) no longer reports it.

Position Value
$14M
Q2 2021
Shares
112.4K
% of Portfolio
+2.92%
Quarters Held
3
position exited

Position History XLRN

Reported value by quarter
Q4 ’20: $14MQ4 ’20Q1 ’21: $15MQ1 ’21Q2 ’21: $14MQ2 ’21filingsflow.com
QuarterSharesValue% of Portfolio
Q2 2021112.4K$14M+2.92%
Q1 2021112.4K$15M+5.74%
Q4 2020112.4K$14M+4.98%

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