D. E. Shaw & Co., Inc.

SEC CIK: 0001009207
Latest filing: Aug 14, 2026

SEC filings (opens in a new tab)

SION holding history

Sionna Therapeutics, Inc. in every 13F filed by D. E. Shaw & Co., Inc., including the quarters it was sold out or no filing was made. Changes compare share counts with the previous calendar quarter.

SION overview All 13F holders of SION Full Q2 2026 holdings

Shares (Q2 2026): 101,644
Value: $4.47M
% of portfolio: <0.1%
Quarters held: 2; Since Q4 2025

Holdings of SION by D. E. Shaw & Co., Inc., by quarter
Quarter	Shares	Value	% of portfolio	Share change	Action	All holders
Q2 2026	101,644	$4.47M	<0.1%	+101,644	New	Holders
Q1 2026	0	$0	0.0%	−5,742−100.0%	Sold out	Holders
Q4 2025	5,742	$236.2K	<0.1%	+5,742	New	Holders