SEC 13F Intelligence

Mfn Partners Management, LP / IRWD

Mfn Partners Management, LP’s Ironwood Pharmaceuticals Inc Position

Does Mfn Partners Management, LP own Ironwood Pharmaceuticals Inc (IRWD)? Not currently — the last reported position was 3.37M shares worth $34M in Q1 2020; the fund’s latest 13F (Q1 2026) no longer reports it.

Position Value
$34M
Q1 2020
Shares
3.37M
% of Portfolio
+4.50%
Quarters Held
6
position exited

Position History IRWD

Reported value by quarter
Q4 ’18: $51MQ4 ’18Q1 ’19: $67MQ1 ’19Q2 ’19: $54MQ2 ’19Q3 ’19: $55MQ3 ’19Q4 ’19: $86MQ4 ’19Q1 ’20: $34MQ1 ’20filingsflow.com
QuarterSharesValue% of Portfolio
Q1 20203.37M$34M+4.50%
Q4 20196.44M$86M+17.66%
Q3 20196.44M$55M+8.26%
Q2 20194.94M$54M+8.58%
Q1 20194.94M$67M+10.78%
Q4 20184.94M$51M+8.68%

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