Hudson Bay Capital Management
SION

Hudson Bay Capital Management’s Sionna Therapeutics SION Stock Holding History

Hudson Bay Capital Management’s Portfolio SION Stock Details SION Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q1 		$248K Buy
+6,180
New +$236K ﹤0.01% 1069

Other funds holding SION

RCM
RA Capital Management Boston, Massachusetts $9.44B AUM 157.3% 1-Year Est. Return
TGA
TPG GP A Fort Worth, Texas $3.68B AUM 14.99% 1-Year Est. Return
O
OrbiMed New York $5.05B AUM 125.28% 1-Year Est. Return
Viking Global Investors
Viking Global Investors Stamford, Connecticut $35.7B AUM 21.3% 1-Year Est. Return
AVLSA
Atlas Venture Life Science Advisors Cambridge, Massachusetts $790M AUM 223.66% 1-Year Est. Return
ES
Enavate Sciences Menlo Park, California $352M AUM 220.14% 1-Year Est. Return
Jennison Associates
Jennison Associates New York $145B AUM 34.61% 1-Year Est. Return
JP Morgan Chase
JP Morgan Chase New York $1.56T AUM 27.86% 1-Year Est. Return
BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
Citadel Advisors
Citadel Advisors Miami, Florida $618B AUM 30.34% 1-Year Est. Return

Hudson Bay Capital Management's SION Position: Q1 2026 in Review

Hudson Bay Capital Management opened a new position in Sionna Therapeutics (SION) in Q1 2026: 6,180 shares worth $248K. The stake represents ﹤0.01% of the portfolio and ranks #1069 among its holdings.

122 funds tracked by Wall St. Rank hold SION as of Q1 2026.

  • Hudson Bay Capital Management held 6,180 shares of Sionna Therapeutics worth $248K as of Q1 2026.
  • Sionna Therapeutics was a new Hudson Bay Capital Management position in Q1 2026.
  • Sionna Therapeutics made up ﹤0.01% of Hudson Bay Capital Management's portfolio in Q1 2026, its #1069 holding.
  • 122 funds tracked by Wall St. Rank held Sionna Therapeutics as of Q1 2026.

Based on Hudson Bay Capital Management's 13F filing for Q1 2026, filed 13 May 2026.