13F Insight
DOSSIER · 13F Holders · Q1 2026Defensive growthQuality
AAOI

Applied optoelectronics Inc

385 institutions still hold Applied optoelectronics Inc as of Q1 2026. Tracked across SEC 13F-HR filings, with insider and 13D/G activity surfaced alongside.

CUSIP 03823u102·385 13F holders·last filed Mar 31, 2026
Market cap
—
▼ 5.7%
vs prior quarter
13F value held
$3.3B
50.0% inst. owned
of float
Holders
385
+31 QoQ
filers reporting
Activity
+74 / −13
+884 added · −840 reduced
this quarter
Concentration
18.23%
BlackRock, Inc. #1
top holder share
AI Holders Summary · Q1 2026

385 institutions reported AAOI in Q1 2026. BlackRock, Inc. leads at 18.2% of the visible book. +31 net new institutions vs prior quarter — accumulation reading.

Top holders

Sorted by position value. Source: SEC EDGAR 13F-HR filings.

#HolderValueShares% port.Quarter
01
BlackRock, Inc.
CIK 0002012383
$608M7.2M0.01%Q1 202602
JANE STREET GROUP, LLC
CIK 0001595888· Market maker
$473M5.6M0.06%Q1 202603
SUSQUEHANNA INTERNATIONAL GROUP, LLP
CIK 0001446194· Market maker
$349M4.1M0.04%Q1 202604
VANGUARD CAPITAL MANAGEMENT LLC
CIK 0002100119· Index
$259M3.1M0.01%Q1 202605
OBERWEIS ASSET MANAGEMENT INC/
CIK 0000937886
$199M2.3M5.87%Q1 202606
Invesco Ltd.
CIK 0000914208
$170M2.0M0.03%Q1 202607
Vanguard Portfolio Management
CIK 0002100121
$152M1.8M0.01%Q1 202608
STATE STREET CORP
CIK 0000093751
$139M1.6M0.00%Q1 202609
GEODE CAPITAL MANAGEMENT, LLC
CIK 0001214717· Index
$137M1.6M0.01%Q1 202610
Value Aligned Research Advisors, LLC
CIK 0001963565
$109M1.3M0.53%Q1 202611
Hood River Capital Management LLC
CIK 0001578177
$108M1.3M1.08%Q1 202612
JPMORGAN CHASE & CO
CIK 0000019617
$95M1.1M0.01%Q1 202613
GOLDMAN SACHS GROUP INC
CIK 0000886982
$92M1.1M0.01%Q1 202614
UBS Group AG
CIK 0001610520
$88M1.0M0.01%Q1 202615
D. E. Shaw & Co., Inc.
CIK 0001009207
$74M2.1M0.04%Q4 202516
RAYMOND JAMES FINANCIAL INC
CIK 0000720005
$62M734K0.02%Q1 202617
MORGAN STANLEY
CIK 0000895421
$62M728K0.00%Q1 202618
Walleye Trading LLC
CIK 0001388391
$58M682K0.10%Q1 202619
DRIEHAUS CAPITAL MANAGEMENT LLC
CIK 0000938206
$53M632K0.39%Q1 202620
NORTHERN TRUST CORP
CIK 0000073124· Index
$49M583K0.01%Q1 2026
Page 1 of 20
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