N
SION

Nuveen’s Sionna Therapeutics SION Stock Holding History

Nuveen’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 		$951K Hold
23,734
– – ﹤0.01% 2602
2025
Q4 		$976K Buy
23,734
+7,694
+48% +$292K ﹤0.01% 2626
2025
Q3 		$472K Hold
16,040
– – ﹤0.01% 2916
2025
Q2 		$278K Buy
+16,040
New +$210K ﹤0.01% 3084

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

Nuveen's SION Position: Q1 2026 in Review

Nuveen held its Sionna Therapeutics (SION) position steady in Q1 2026 at 23,734 shares worth $951K. The position accounts for ﹤0.01% of the portfolio, ranked #2602.

Nuveen first reported a position in SION in Q2 2025 and has held it in 4 quarters since. The position peaked at $976K in Q4 2025. 122 funds tracked by Wall St. Rank hold SION as of Q1 2026.

  • Nuveen held 23,734 shares of Sionna Therapeutics worth $951K as of Q1 2026.
  • Nuveen left its Sionna Therapeutics share count unchanged in Q1 2026.
  • Sionna Therapeutics made up ﹤0.01% of Nuveen's portfolio in Q1 2026, its #2602 holding.
  • Nuveen first reported a position in Sionna Therapeutics in Q2 2025 and has held it in 4 quarters since.
  • Nuveen's Sionna Therapeutics position peaked at $976K in Q4 2025.
  • 122 funds tracked by Wall St. Rank held Sionna Therapeutics as of Q1 2026.

Based on Nuveen's 13F filing for Q1 2026, filed 30 Apr 2026.