Sionna Therapeutics, Inc.

SION

Exchange: Nasdaq
Industry: Pharmaceutical Preparations
SEC CIK: 0002036042

SEC filings (opens in a new tab)

In the last 90 days, Sionna Therapeutics, Inc. insiders filed 0 open-market purchases and 2 sales; 146 institutions reported holding it in 13F filings for Q2 2026, worth $2.11B in total; Viking Global Investors is the only superinvestor holding it.

Q1 2025 vs. Q4 2024

How the institutions holding Sionna Therapeutics, Inc. changed between Q4 2024 and Q1 2025.

All holders in Q1 2025 All holders in Q4 2024

13F holders of SION: Q4 2024 compared with Q1 2025
Measure	Q4 2024	Q1 2025	Change
Holders	0	47	+47
Shares	0	41.5M	+41.5M
Value	$0	$434.1M	+$434.1M

New holders (47)

Institutions that held Sionna Therapeutics, Inc. at the end of Q1 2025 but not at the end of Q4 2024.

Institutions new to SION in Q1 2025
Institution	Shares	Value	% of portfolio
Ra Capital Management, L.P.	10,445,322	$109.3M	1.82%
TPG GP A, LLC	6,684,962	$69.9M	1.41%
OrbiMed Advisors LLC	3,704,959	$38.8M	0.93%
Atlas Venture Life Science Advisors, LLC	3,694,020	$38.6M	7.41%
Viking Global Investors LPSuperinvestorViking Global Investors	2,952,754	$30.9M	0.10%
Enavate Sciences GP, LLC	2,478,030	$25.9M	19.53%
JPMorgan Chase & Co	2,169,599	$22.7M	0.00%
Perceptive Advisors LLC	1,251,101	$13.1M	0.46%
Price T Rowe Associates Inc	996,212	$10.4M	0.00%
Jennison Associates LLC	859,927	$8.99M	0.01%
Deerfield Management Company, L.P. (Series C)	747,000	$7.81M	0.15%
Standard Life Aberdeen plc	745,964	$7.80M	0.02%
Vanguard Group Inc	546,167	$5.71M	0.00%
Franklin Resources Inc	500,023	$5.23M	0.00%
Baker Bros. Advisors LP	400,000	$4.18M	0.05%
Driehaus Capital Management LLC	328,889	$3.44M	0.03%
Citadel Advisors LLC	326,500	$3.42M	0.00%
Siren, L.L.C.	325,000	$3.40M	0.19%
Soleus Capital Management, L.P.	240,000	$2.51M	0.20%
Zimmer Partners, LP	237,500	$2.48M	0.05%
Ameriprise Financial Inc	209,266	$2.19M	0.00%
BlackRock, Inc.	198,396	$2.08M	0.00%
Alyeska Investment Group, L.P.	186,222	$1.95M	0.01%
Millennium Management LLC	179,072	$1.87M	0.00%
Geode Capital Management, LLC	135,563	$1.42M	0.00%
CenterBook Partners LP	114,284	$1.20M	0.08%
Silverarc Capital Management, LLC	114,138	$1.19M	0.25%
Rock Springs Capital Management LP	99,429	$1.04M	0.06%
Woodline Partners LP	80,000	$836.8K	0.01%
Charles Schwab Investment Management Inc	64,644	$676.2K	0.00%
Goldman Sachs Group Inc	63,741	$666.7K	0.00%
Prudential Financial Inc	63,000	$659.0K	0.00%
StemPoint Capital LP	60,000	$627.6K	0.20%
TD Asset Management Inc	55,366	$579.1K	0.00%
Holocene Advisors, LP	50,000	$523.0K	0.00%
Squarepoint Ops LLC	33,964	$355.3K	0.00%
Manufacturers Life Insurance Company, The	33,549	$350.9K	0.00%
Northern Trust Corp	26,822	$280.6K	0.00%
Aster Capital Management (DIFC) Ltd	14,757	$203.2K	0.04%
State Street Corp	14,400	$150.6K	0.00%
Balyasny Asset Management LLC	13,060	$136.6K	0.00%
Marshall Wace, LLP	12,188	$127.5K	0.00%
Two Sigma Investments, LP	11,715	$122.5K	0.00%
UBS Group AG	11,146	$116.6K	0.00%
Bank of America Corp	8,739	$91.4K	0.00%
Morgan Stanley	3,939	$41.2K	0.00%
Royal Bank of Canada	618	$6.00K	0.00%

Sold out (0)

Institutions that held Sionna Therapeutics, Inc. at the end of Q4 2024 and filed for Q1 2025 without it.

None.