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Ownership — ABOS
Institutional Holdings
Insider Transactions
US Institutional Ownership
65.7%
Institution
Shares
Value
Ownership %
Change
Filing Date
RA Capital Management, L.P.
20.99M
$56.0M
29.03%
--
2026-06-30
Sands Capital Alternatives, LLC
3.72M
$9.0M
5.14%
--
2026-06-30
BlackRock, Inc.
2.49M
$6.0M
3.44%
+2.31M
2026-06-30
Alyeska Investment Group, L.P.
2.45M
$6.0M
3.39%
--
2026-06-30
Franklin Resources Inc
2.31M
$6.0M
3.19%
--
2026-06-30
ADAR1 Capital Management, LLC
2.11M
$5.0M
2.92%
-45.0K
2026-06-30
Vanguard Capital Management LLC
1.67M
$4.0M
2.31%
+165.8K
2026-06-30
Knollwood Investment Advisory, LLC
1.63M
$4.0M
2.25%
--
2026-06-30
Geode Capital Management, LLC
1.14M
$3.0M
1.58%
+725.6K
2026-06-30
Ikarian Capital, LLC
1.05M
$2.0M
1.46%
--
2026-06-30
Hudson Bay Capital Management LP
955.0K
$2.0M
1.32%
-13.9K
2026-06-30
Pathstone Holdings, LLC
859.1K
$2.0M
1.19%
--
2026-06-30
Renaissance Technologies LLC
675.0K
$1.0M
0.93%
+201.1K
2026-06-30
Two Sigma Investments, LP
622.9K
$1.0M
0.86%
--
2026-06-30
State Street Corp
600.5K
$1.0M
0.83%
+448.8K
2026-06-30
Northern Trust Corp
360.7K
--
0.50%
+285.5K
2026-06-30
Vanguard Portfolio Management LLC
320.8K
--
0.44%
--
2026-06-30
Dimensional Fund Advisors LP
291.6K
--
0.40%
+171.8K
2026-06-30
Vanguard Fiduciary Trust Co
291.2K
--
0.40%
+92.0K
2026-06-30
Bank of America Corp
274.8K
--
0.38%
-45.4K
2026-06-30
Boothbay Fund Management, LLC
273.0K
--
0.38%
--
2026-06-30
Nomura Holdings Inc
189.7K
--
0.26%
--
2026-06-30
Goldman Sachs Group Inc
183.9K
--
0.25%
-22.8K
2026-06-30
Bridgeway Capital Management, LLC
176.2K
--
0.24%
--
2026-06-30
Morgan Stanley
136.8K
--
0.19%
-7.8K
2026-06-30
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