SIONNA THERAPEUTICS INC

Watch

Share

SION·829401108·US·equity·Healthcare - Biotechnology-Activist

SION (SIONNA THERAPEUTICS INC) is held by 72 institutional investors as of Q1 2026. Largest holders: RA CAPITAL MANAGEMENT, L.P. ($397.1M), VIKING GLOBAL INVESTORS LP ($128.1M), JENNISON ASSOCIATES LLC ($58.2M). Net institutional sentiment: Mixed.

72

Holders

Avg rating(4 Elite)

$940.6M

Total Value

61% (76)

Fund Consensus

41 buying - 26 selling

Smart Money Verdict

View all

41Weak MomentumSplit Signals

Institutional (13F)61

Insider (Form 4)2

Activist (13D/13G)51

Congressional (STOCK Act)

No data

Get 5 free verdicts/month - sign up in 10 seconds

See how SION's score breaks down across 4 SEC sources

Holder Quality

4

★★★★★

Elite

26

★★★★

Strong

22

★★★

Solid

20

★★

Below

4

★

Weak

Held by 72 funds

4 elite

Who's Trading

ActivistQIQatar Investment Authority4.5%May 12, 2026

13F: Mar 31, 2026Insider & Congress: Updated regularly

Positions (76)History

AllNewIncreasedHeldDecreasedExited

Fund	Action	Shares	Value	Weight	Est. P&L	Conviction
RA CAPITAL MANAGEMENT, L.P.	Unchanged	9.9M	$397.1M	4.2%	+247.92%	0
VIKING GLOBAL INVESTORS LP	Unchanged	3.2M	$128.1M	0.4%	+238.42%	0
JENNISON ASSOCIATES LLC	Increased	1.5M(+30.1%)	$58.2M	0.0%	+80.96%	37
JPMORGAN CHASE & CO	Increased	1.5M(+18.9%)	$53.7M	0.0%	+164.09%	35
BlackRock, Inc.	Increased	1.3M(+0.3%)	$52M	0.0%	+53.23%	29
CITADEL ADVISORS LLC	Increased	1.2M(+7.3%)	$46.8M	0.0%	+0.62%	31
STATE STREET CORP	Increased	756,227(+9.1%)	$30.3M	0.0%	+15.98%	31
Aberdeen Group plc	Decreased	564,175(-32.8%)	$22.6M	0.0%	+222.24%	0
BAKER BROS. ADVISORS LP	Unchanged	400,000	$16M	0.1%	+247.92%	0
GEODE CAPITAL MANAGEMENT, LLC	Increased	389,872(+2.6%)	$15.6M	0.0%	+101.81%	29
GOLDMAN SACHS GROUP INC	Increased	263,174(+625.6%)	$10.6M	0.0%	+19.29%	45
Ensign Peak Advisors, Inc	Increased	255,636(+220.1%)	$10.2M	0.0%	+10.58%	45
Candriam S.C.A.	New	236,813	$9.5M	0.0%	+17.98%	38
FRANKLIN RESOURCES INC	Unchanged	175,483	$7M	0.0%	+247.92%	0
AGADAGE CAPITAL PARTNERS GP, L.L.C.	New	150,000	$6M	0.0%	+17.98%	38
UBS Group AG	Increased	147,641(+65.6%)	$5.9M	0.0%	+33.49%	40
MILLENNIUM MANAGEMENT LLC	Increased	140,641(+74.6%)	$5.6M	0.0%	+30.59%	41
Point72 Asset Management, L.P.	New	136,549	$5.5M	0.0%	+17.98%	37
AIAlyeska Investment Group, L.P.	Unchanged	136,222	$5.5M	0.0%	+247.92%	0
MORGAN STANLEY	Increased	133,023(+166.7%)	$5.3M	0.0%	+24.23%	44