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Business Summary
Filings
Ownership
Valuation
Ownership — ACET
Institutional Holdings
Insider Transactions
US Institutional Ownership
64.1%
Institution
Shares
Value
Ownership %
Change
Filing Date
RA CAPITAL MANAGEMENT, L.P.
932.6K
$8.0M
9.96%
-250.0K
2026-06-30
ORBIMED ADVISORS LLC
844.8K
$7.0M
9.02%
-183.2K
2026-06-30
FRANKLIN RESOURCES INC
626.6K
$5.0M
6.69%
--
2026-06-30
CITADEL ADVISORS LLC
466.2K
$4.0M
4.98%
+84.4K
2026-06-30
VANGUARD CAPITAL MANAGEMENT LLC
343.2K
$2.0M
3.67%
+6.7K
2026-06-30
ADAGE CAPITAL PARTNERS GP, L.L.C.
274.4K
$2.0M
2.93%
--
2026-06-30
RENAISSANCE TECHNOLOGIES LLC
265.9K
$2.0M
2.84%
+33.4K
2026-06-30
Stonepine Capital Management, LLC
245.5K
$2.0M
2.62%
+23.6K
2026-06-30
Alyeska Investment Group, L.P.
203.8K
$1.0M
2.18%
--
2026-06-30
Schonfeld Strategic Advisors LLC
195.5K
$1.0M
2.09%
--
2026-06-30
Carlyle Group Inc.
184.3K
$1.0M
1.97%
--
2026-06-30
NEXTBio Capital Management LP
157.8K
$1.0M
1.69%
--
2026-06-30
TWO SIGMA INVESTMENTS, LP
96.8K
--
1.03%
--
2026-06-30
GEODE CAPITAL MANAGEMENT, LLC
95.6K
--
1.02%
-5.5K
2026-06-30
DAFNA Capital Management LLC
93.8K
--
1.00%
--
2026-06-30
BRIDGEWAY CAPITAL MANAGEMENT, LLC
86.0K
--
0.92%
+29.6K
2026-06-30
MARSHALL WACE, LLP
79.5K
--
0.85%
--
2026-06-30
Trexquant Investment LP
78.0K
--
0.83%
+34.3K
2026-06-30
JANE STREET GROUP, LLC
70.6K
--
0.75%
+33.5K
2026-06-30
Burkehill Global Management, LP
62.5K
--
0.67%
--
2026-06-30
BlackRock, Inc.
62.1K
--
0.66%
+25.5K
2026-06-30
REGENERON PHARMACEUTICALS, INC.
60.5K
--
0.65%
--
2026-06-30
Rangeley Capital, LLC
50.9K
--
0.54%
-5.1K
2026-06-30
VANGUARD FIDUCIARY TRUST CO
50.7K
--
0.54%
+336
2026-06-30
RBF Capital, LLC
38.6K
--
0.41%
--
2026-06-30
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