SC
SION

Stempoint Capital’s Sionna Therapeutics SION Stock Holding History

Stempoint Capital’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 		$1.46M Buy
+36,540
New +$1.39M 0.28% 58
2025
Q2 		– Sell
-60,000
Closed -$628K – 82
2025
Q1 		$628K Buy
+60,000
New +$980K 0.2% 51

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

Stempoint Capital's SION Position: Q1 2026 in Review

Stempoint Capital opened a new position in Sionna Therapeutics (SION) in Q1 2026: 36,540 shares worth $1.46M. The stake represents 0.28% of the portfolio and ranks #58 among its holdings. This is a return to the name: Stempoint Capital previously reported a position in SION as recently as Q1 2025.

Stempoint Capital first reported a position in SION in Q1 2025 and has held it in 2 quarters since. 122 funds tracked by Wall St. Rank hold SION as of Q1 2026.

  • Stempoint Capital held 36,540 shares of Sionna Therapeutics worth $1.46M as of Q1 2026.
  • Sionna Therapeutics was a new Stempoint Capital position in Q1 2026.
  • Sionna Therapeutics made up 0.28% of Stempoint Capital's portfolio in Q1 2026, its #58 holding.
  • Stempoint Capital first reported a position in Sionna Therapeutics in Q1 2025 and has held it in 2 quarters since.
  • 122 funds tracked by Wall St. Rank held Sionna Therapeutics as of Q1 2026.

Based on Stempoint Capital's 13F filing for Q1 2026, filed 15 May 2026.