Back to RA CAPITAL MANAGEMENT, L.P. RA CAPITAL MANAGEMENT, L.P.

SIONSION
6 quarters

Position history for RA CAPITAL MANAGEMENT, L.P.RA CAPITAL MANAGEMENT, L.P.'s holdings in SIONNA THERAPEUTICS INC COM

RA CAPITAL MANAGEMENT, L.P. holds 9.9M shares of SION (SIONNA THERAPEUTICS INC COM), worth $435.7M as of 2026-Q2. SION represents 3.8% of RA CAPITAL MANAGEMENT, L.P.'s portfolio.

Current Value

$435.7M

Current Shares

9.9M

Total Value Change

+$326.5M

Total Shares Change

-540,277

Quarter-by-Quarter History
QuarterActionSharesChangeValueWeightPriceConviction
2026-Q2
Latest
Unchanged
9.9M
0.0%
$435.7M3.8%$43.99
0
2026-Q1
Unchanged
9.9M
0.0%
$397.1M4.2%$34.09
0
2025-Q4
Decreased
9.9M
-5.2%
$407.5M4.2%$41.39
0
2025-Q3
Unchanged
10.4M
0.0%
$307.2M3.8%$29.52
0
2025-Q2
Unchanged
10.4M
0.0%
$181.2M3.1%$15.84
0
2025-Q1
New
10.4M
-
$109.3M1.8%$11.56
69

Other major holders of SION: VIKING GLOBAL INVESTORS LP, JPMORGAN CHASE & CO

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