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Business Summary
Filings
Ownership
Valuation
Ownership — ACET
Institutional Holdings
Insider Transactions
US Institutional Ownership
64.2%
Institution
Shares
Value
Ownership %
Change
Filing Date
RA CAPITAL MANAGEMENT, L.P.
1.18M
$8.0M
12.32%
+234.4K
2026-03-31
ORBIMED ADVISORS LLC
1.03M
$7.0M
10.71%
--
2026-03-31
FRANKLIN RESOURCES INC
626.6K
$4.0M
6.53%
--
2026-03-31
CITADEL ADVISORS LLC
381.8K
$2.0M
3.98%
+274.0K
2026-03-31
VANGUARD CAPITAL MANAGEMENT LLC
336.5K
$2.0M
3.51%
--
2026-03-31
Woodline Partners LP
313.1K
$2.0M
3.26%
-311.9K
2026-03-31
ADAGE CAPITAL PARTNERS GP, L.L.C.
274.4K
$1.0M
2.86%
--
2026-03-31
Prosight Management, LP
250.2K
$1.0M
2.61%
--
2026-03-31
RENAISSANCE TECHNOLOGIES LLC
232.6K
$1.0M
2.42%
-10.4K
2026-03-31
Stonepine Capital Management, LLC
222.0K
$1.0M
2.31%
+1.9K
2026-03-31
Alyeska Investment Group, L.P.
203.8K
$1.0M
2.12%
--
2026-03-31
Carlyle Group Inc.
184.3K
$1.0M
1.92%
--
2026-03-31
NEXTBio Capital Management LP
157.8K
$1.0M
1.64%
--
2026-03-31
GEODE CAPITAL MANAGEMENT, LLC
101.1K
--
1.05%
+12.3K
2026-03-31
DAFNA Capital Management LLC
93.8K
--
0.98%
--
2026-03-31
BURKEHILL GLOBAL MANAGEMENT, LP
62.5K
--
0.65%
--
2026-03-31
Rangeley Capital, LLC
56.0K
--
0.58%
+31.0K
2026-03-31
ADAR1 Capital Management, LLC
53.8K
--
0.56%
-74.8K
2026-03-31
VANGUARD FIDUCIARY TRUST CO
50.3K
--
0.52%
--
2026-03-31
Trexquant Investment LP
43.7K
--
0.45%
--
2026-03-31
RBF Capital, LLC
38.6K
--
0.40%
--
2026-03-31
UBS Group AG
38.4K
--
0.40%
+34.6K
2026-03-31
JANE STREET GROUP, LLC
37.1K
--
0.39%
--
2026-03-31
BlackRock, Inc.
36.6K
--
0.38%
--
2026-03-31
STATE STREET CORP
36.2K
--
0.38%
+10.3K
2026-03-31
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