SEC 13F Intelligence

Orbimed Advisors LLC / SION

Orbimed Advisors LLC’s Sionna Therapeutics Inc Position

Does Orbimed Advisors LLC own Sionna Therapeutics Inc (SION)? Yes — 3.53M shares worth $142M (+2.81% of its 13F portfolio) as of Q1 2026, down from 3.56M shares the prior filed quarter.

Position Value
$142M
Q1 2026
Shares
3.53M
% of Portfolio
+2.81%
Quarters Held
5
currently held

Position History SION

Reported value by quarter
Q1 ’25: $39MQ1 ’25Q2 ’25: $64MQ2 ’25Q3 ’25: $109MQ3 ’25Q4 ’25: $147MQ4 ’25Q1 ’26: $142MQ1 ’26filingsflow.com
QuarterSharesValue% of Portfolio
Q1 20263.53M$142M+2.81%
Q4 20253.56M$147M+2.99%
Q3 20253.70M$109M+2.56%
Q2 20253.70M$64M+1.61%
Q1 20253.70M$39M+0.92%

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