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SION
SIONAdd to Watchlist
41.640USD
-2.350-5.34%
Close 07/01, 16:00（ET）Quotes delayed by 15 min
1.88BMarket Cap
LossP/E TTM
Shareholding Stats
Updated: Sun, May 10
Updated: Sun, May 10
Shareholders
Shareholder Types
Shareholders
Shareholders
Proportion
RA Capital Management, LP
21.94%
TPG Capital, L.P.
14.39%
Viking Global Investors LP
7.08%
Atlas Venture
6.63%
OrbiMed Advisors, LLC
5.92%
Other
44.05%
Shareholders
Shareholders
Proportion
RA Capital Management, LP
21.94%
TPG Capital, L.P.
14.39%
Viking Global Investors LP
7.08%
Atlas Venture
6.63%
OrbiMed Advisors, LLC
5.92%
Other
44.05%
Shareholder Types
Shareholders
Proportion
Venture Capital
28.59%
Private Equity
24.82%
Investment Advisor/Hedge Fund
17.11%
Investment Advisor
16.23%
Hedge Fund
6.99%
Sovereign Wealth Fund
5.49%
Corporation
5.49%
Individual Investor
1.36%
Research Firm
0.28%
Institutional Shareholding
Updated: Wed, Apr 1
Updated: Wed, Apr 1
Reporting Period
No. of institutions
Shares Held
Proportion
Change
2026Q1
183
46.20M
102.34%
+5.84M
2025Q4
146
42.16M
94.64%
+62.95K
2025Q3
113
43.75M
98.38%
+4.40M
2025Q2
67
44.67M
101.23%
+10.09M
2025Q1
60
42.19M
95.62%
+9.56M
Shareholder Activity
Name
Shares Held
Proportion
Change
Chg %
Date
RA Capital Management, LP
9.91M
22.01%
--
--
Dec 31, 2025
TPG Capital, L.P.
6.49M
14.43%
-250.00K
-3.71%
Jan 22, 2026
Viking Global Investors LP
3.20M
7.1%
--
--
Dec 31, 2025
Atlas Venture
3.00M
6.66%
-88.88K
-2.88%
Dec 31, 2025
OrbiMed Advisors, LLC
3.53M
7.85%
-30.95K
-0.87%
Feb 03, 2026
Enavate Sciences GP, LLC
2.48M
5.51%
--
--
Dec 31, 2025
Qatar Investment Authority
2.21M
4.91%
+2.21M
--
Jun 11, 2025
Jennison Associates LLC
1.12M
2.48%
+117.90K
+11.82%
Dec 31, 2025
Perceptive Advisors LLC
1.18M
2.62%
--
--
Dec 31, 2025
BlackRock Institutional Trust Company, N.A.
1.17M
2.6%
+390.95K
+50.28%
Dec 31, 2025
View more
Related ETFs
Updated: Sat, Dec 6
Updated: Sat, Dec 6
Name
Proportion
Virtus LifeSci Biotech Clinical Trials ETF
1.52%
JPMorgan Fundamental Data Science Small Core ETF
0.36%
iShares Micro-Cap ETF
0.09%
iShares Russell 2000 Growth ETF
0.03%
iShares Russell 2000 ETF
0.02%
Proshares Ultra Russell 2000
0.02%
Global X Russell 2000 ETF
0.02%
ProShares UltraPro Russell2000
0.02%
ProShares Hedge Replication ETF
0.02%
Schwab U.S. Small-Cap ETF
0.01%
View more
Virtus LifeSci Biotech Clinical Trials ETF
Proportion1.52%
JPMorgan Fundamental Data Science Small Core ETF
Proportion0.36%
iShares Micro-Cap ETF
Proportion0.09%
iShares Russell 2000 Growth ETF
Proportion0.03%
iShares Russell 2000 ETF
Proportion0.02%
Proshares Ultra Russell 2000
Proportion0.02%
Global X Russell 2000 ETF
Proportion0.02%
ProShares UltraPro Russell2000
Proportion0.02%
ProShares Hedge Replication ETF
Proportion0.02%
Schwab U.S. Small-Cap ETF
Proportion0.01%