13F Insight
DOSSIER · 13F Holders · Q1 2026Technology · Computer Communications EquipmentDefensive growthQuality
ATEN

A10 NETWORKS INC

275 institutions still hold A10 NETWORKS INC as of Q1 2026. Tracked across SEC 13F-HR filings, with insider and 13D/G activity surfaced alongside.

CUSIP 002121101·Computer Communications Equipment·275 13F holders·last filed Mar 31, 2026
Market cap
—
▲ 4.7%
vs prior quarter
13F value held
$1.1B
47.0% inst. owned
of float
Holders
275
+77 QoQ
filers reporting
Activity
+59 / −37
+969 added · −943 reduced
this quarter
Concentration
28.44%
BlackRock, Inc. #1
top holder share
AI Holders Summary · Q1 2026

275 institutions reported ATEN in Q1 2026. BlackRock, Inc. leads at 28.4% of the visible book. +77 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
$303M13.1M0.01%Q1 202602
Vanguard Portfolio Management
CIK 0002100121
$78M3.4M0.00%Q1 202603
VANGUARD CAPITAL MANAGEMENT LLC
CIK 0002100119· Index
$72M3.1M0.00%Q1 202604
STATE STREET CORP
CIK 0000093751
$71M3.1M0.00%Q1 202605
Boston Trust Walden Corp
CIK 0001534866
$50M2.2M0.41%Q1 202606
WELLINGTON MANAGEMENT GROUP LLP
CIK 0000902219
$48M2.1M0.01%Q1 202607
BARCLAYS PLC
CIK 0000312069
$43M1.9M0.01%Q1 202608
RENAISSANCE TECHNOLOGIES LLC
CIK 0001037389
$41M1.8M0.06%Q1 202609
FIRST TRUST ADVISORS LP
CIK 0001125816· Index
$40M1.7M0.03%Q1 202610
GEODE CAPITAL MANAGEMENT, LLC
CIK 0001214717· Index
$40M1.7M0.00%Q1 202611
DIMENSIONAL FUND ADVISORS LP
CIK 0000354204· Quasi-passive
$38M1.6M0.01%Q1 202612
MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.
CIK 0001705339
$36M1.6M0.05%Q1 202613
ARROWSTREET CAPITAL, LIMITED PARTNERSHIP
CIK 0001164508
$35M1.5M0.02%Q1 202614
PUNCH & ASSOCIATES INVESTMENT MANAGEMENT, INC.
CIK 0001238990
$34M1.5M1.95%Q1 202615
TWO SIGMA INVESTMENTS, LP
CIK 0001179392
$31M1.3M0.02%Q1 202616
GOLDMAN SACHS GROUP INC
CIK 0000886982
$27M1.2M0.00%Q1 202617
PRUDENTIAL FINANCIAL INC
CIK 0001137774
$20M885K0.03%Q1 202618
Boston Partners
CIK 0001386060
$19M816K0.02%Q1 202619
ROYCE & ASSOCIATES LP
CIK 0000906304
$19M817K0.19%Q1 202620
MORGAN STANLEY
CIK 0000895421
$19M813K0.00%Q1 2026
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