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Business Summary
Filings
Ownership
Valuation
Ownership — OTLK
Institutional Holdings
Insider Transactions
US Institutional Ownership
10.5%
Institution
Shares
Value
Ownership %
Change
Filing Date
VANGUARD CAPITAL MANAGEMENT LLC
4.38M
$6.0M
2.34%
+2.41M
2026-06-30
PERCEPTIVE ADVISORS LLC
3.14M
$4.0M
1.68%
--
2026-06-30
MARSHALL WACE, LLP
1.99M
$3.0M
1.06%
+1.69M
2026-06-30
BlackRock, Inc.
1.67M
$2.0M
0.89%
+1.19M
2026-06-30
JANE STREET GROUP, LLC
1.66M
$2.0M
0.89%
+1.60M
2026-06-30
GEODE CAPITAL MANAGEMENT, LLC
1.25M
$1.0M
0.67%
+642.3K
2026-06-30
HRT FINANCIAL LP
784.9K
$1.0M
0.42%
+717.1K
2026-06-30
VANGUARD FIDUCIARY TRUST CO
661.7K
$1.0M
0.35%
+485.1K
2026-06-30
GILPIN WEALTH MANAGEMENT, LLC
655.0K
$1.0M
0.35%
-55.2K
2026-06-30
STATE STREET CORP
539.8K
--
0.29%
+376.7K
2026-06-30
CITADEL ADVISORS LLC
393.7K
--
0.21%
+199.2K
2026-06-30
Sanctuary Advisors, LLC
344.5K
--
0.18%
+308.2K
2026-06-30
RAYMOND JAMES FINANCIAL INC
332.1K
--
0.18%
+305.0K
2026-06-30
NORTHERN TRUST CORP
237.6K
--
0.13%
+170.2K
2026-06-30
SIMPLEX TRADING, LLC
205.0K
--
0.11%
+72.3K
2026-06-30
LPL Financial LLC
184.9K
--
0.10%
+151.3K
2026-06-30
UBS Group AG
152.2K
--
0.08%
+19.1K
2026-06-30
DEUTSCHE BANK AG\
130.7K
--
0.07%
+127.8K
2026-06-30
Wealth Management Partners, LLC
118.2K
--
0.06%
--
2026-06-30
Jefferies Financial Group Inc.
62.5K
--
0.03%
--
2026-06-30
MILLENNIUM MANAGEMENT LLC
57.8K
--
0.03%
-106.7K
2026-06-30
Tower Research Capital LLC (TRC)
57.4K
--
0.03%
+42.6K
2026-06-30
Royal Fund Management, LLC
47.2K
--
0.03%
--
2026-06-30
SCOTIA CAPITAL INC.
46.3K
--
0.02%
-27.7K
2026-06-30
Belvedere Trading LLC
45.9K
--
0.02%
--
2026-06-30
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