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A10 Networks Inc (ATEN)

CUSIP: 002121101 | NYSE | Technology · Software - Infrastructure | Small Cap | 757 institutional holders

Quarters

Q3 2026Q2 2026Q1 2026Q4 2025Q3 2025
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Beneficial Ownership — 13D / 13G

Full history →

5%+ stakes reported outside the quarterly cycle. A 13D is due within five business days of the event below, so these figures lead the holders table until the filer's next 13F catches up to them.

HolderShares% of ClassChangeEvent Datevs 13F
13GVanguard Portfolio Management LLC3,788,3635.2%New 5%+ stakeSep 30, 20263,462,058 sh (Jun 30, 2026)
13G/AVanguard Capital Management LLC3,624,5395.0%Newly reportedSep 30, 20263,071,071 sh (Jun 30, 2026)
13GFirst Trust Portfolios L.P.4,809,2616.7%New 5%+ stakeJun 30, 2026No 13F filer matched
13GVanguard Portfolio Management LLC3,788,363
5.2% of class · Sep 30, 2026New 5%+ stake
3,462,058 sh (Jun 30, 2026)
13G/AVanguard Capital Management LLC3,624,539
5.0% of class · Sep 30, 2026Newly reported
3,071,071 sh (Jun 30, 2026)
13GFirst Trust Portfolios L.P.4,809,261
6.7% of class · Jun 30, 2026New 5%+ stake
No 13F filer matched

Institutional Holders — Q3 2026

Boston Trust Walden Corp3,018,750
0.7% of portfolio›$81.8M
Dimensional Fund Advisors LP1,629,751
0.0% of portfolio›$44.2M
Bank of New York Mellon Corp646,548
0.0% of portfolio›$17.5M
Wasatch Advisors LP535,558
0.1% of portfolio›$14.5M
Principal Financial Group Inc501,171
0.0% of portfolio›$13.6M
Bridge City Capital, LLC334,912
1.9% of portfolio›$9.1M
Summit Partners L P200,065
1.1% of portfolio›$5.4M
Hennion & Walsh Asset Management, Inc.181,287
0.1% of portfolio›$4.9M
Robeco Institutional Asset Management B.V.166,833
0.0% of portfolio›$4.5M
Creative Planning153,610
0.0% of portfolio›$4.2M
Harbor Capital Advisors, Inc.150,072
0.7% of portfolio›$4.1M
Truist Financial Corp136,406
0.0% of portfolio›$3.7M
Citigroup Inc89,935
0.0% of portfolio›$2.4M
Verity Asset Management, Inc.79,624
0.8% of portfolio›$2.2M
Aegon Asset Management UK PLC74,609
0.0% of portfolio›$2.0M
Vest Financial, LLC70,987
0.0% of portfolio›$1.9M
Allspring Global Investments Holdings, LLC59,510
0.0% of portfolio›$1.6M
Summit Global Investments52,464
0.4% of portfolio›$1.4M
Nilsine Partners, LLC48,126
0.1% of portfolio›$1.3M
Thrivent Financial for Lutherans46,181
0.0% of portfolio›$1.3M
Asset Management One Co., Ltd.43,821
0.0% of portfolio›$1.2M
Illinois Municipal Retirement Fund37,688
0.0% of portfolio›$1.0M
Mirae Asset Global Investments Co., Ltd.35,622
0.0% of portfolio›$965.7K
Y-Intercept (Hong Kong) Ltd33,489
0.0% of portfolio›$907.9K
Evergreen Capital Management LLC32,999
0.0% of portfolio›$894.6K
Louisiana State Employees Retirement System30,900
0.0% of portfolio›$837.7K
ABN Amro Investment Solutions29,586
0.0% of portfolio›$802.1K
Strs Ohio29,500
0.0% of portfolio›$799.7K
State of Alaska, Department of Revenue24,616
0.0% of portfolio›$666.0K
Inspire Investing, LLC23,150
0.0% of portfolio›$627.6K
Unique Wealth Strategies, LLC21,365
0.3% of portfolio›$798.2K
Arizona State Retirement System19,271
0.0% of portfolio›$522.4K
Amalgamated Bank18,819
0.0% of portfolio›$510.0K
Yousif Capital Management, LLC18,418
0.0% of portfolio›$499.3K
Simplex Trading, LLC17,856
0.0% of portfolio›$484.1K
New York State Teachers Retirement System17,712
0.0% of portfolio›$480.0K
Linden Thomas Advisory Services, LLC17,289
0.0% of portfolio›$468.7K
Commonwealth of Pennsylvania Public School Empls Retrmt SYS17,108
0.0% of portfolio›$463.8K
Oregon Public Employees Retirement Fund16,318
0.0% of portfolio›$442.4K
Maryland State Retirement & Pension System16,217
0.0% of portfolio›$439.6K
Fifth Third Bancorp15,666
0.0% of portfolio›$424.7K
DekaBank Deutsche Girozentrale14,400
0.0% of portfolio›$388.0K
Park Avenue Securities LLC14,229
0.0% of portfolio›$386.0K
Commonwealth Equity Services, LLC14,149
0.0% of portfolio›$383.6K
Abel Hall, LLC12,666
0.1% of portfolio›$343.4K
US Bancorp \de\11,988
0.0% of portfolio›$325.0K
Caitong International Asset Management Co., Ltd11,106
0.0% of portfolio›$301.1K
Pictet Asset Management Holding SA10,290
0.0% of portfolio›$279.0K
ProShare Advisors LLC9,944
0.0% of portfolio›$269.6K
Hohimer Wealth Management, LLC9,926
0.0% of portfolio›$269.1K
Larson Financial Group LLC9,676
0.0% of portfolio›$262.3K
Swiss Life Asset Management Ltd8,939
0.0% of portfolio›$242.3K
Mutual of America Capital Management LLC8,285
0.0% of portfolio›$224.6K
LeConte Wealth Management, LLC7,512
0.1% of portfolio›$203.7K
Gamma Investing LLC7,079
0.0% of portfolio›$191.9K
Bayforest Capital Ltd6,254
0.3% of portfolio›$169.5K
Nisa Investment Advisors, LLC4,474
0.0% of portfolio›$121.3K
KBC Group NV3,197
0.0% of portfolio›$87.0K
Sterling Capital Management LLC2,413
0.0% of portfolio›$65.4K
Signaturefd, LLC1,687
0.0% of portfolio›$45.7K
Spire Wealth Management1,510
0.0% of portfolio›$40.9K
MassMutual Private Wealth & Trust, FSB1,455
0.0% of portfolio›$39.4K
Farther Finance Advisors, LLC1,343
0.0% of portfolio›$36.4K
Salomon & Ludwin, LLC1,325
0.0% of portfolio›$35.9K
Versant Capital Management, Inc1,247
0.0% of portfolio›$33.8K
SBI Securities Co., Ltd.948
0.0% of portfolio›$25.7K
Pinnacle Wealth Planning Services, Inc.885
0.0% of portfolio›$24.0K
First Horizon Corp700
0.0% of portfolio›$19.0K
Leonteq Securities AG517
0.0% of portfolio›$14.0K
Parallel Advisors, LLC462
0.0% of portfolio›$12.5K
Marquette Asset Management, LLC382
0.0% of portfolio›$10.4K
Bell Investment Advisors, Inc331
0.0% of portfolio›$9.0K
EverSource Wealth Advisors, LLC326
0.0% of portfolio›$8.8K
Assetmark, Inc260
0.0% of portfolio›$7.0K
First Pacific Financial230
0.0% of portfolio›$6.2K
Root Financial Partners, LLC154
0.0% of portfolio›$4.2K
Parkside Financial Bank & Trust146
0.0% of portfolio›$4.0K
Private Wealth Management Group, LLC112
0.0% of portfolio›$3.0K
IFP Advisors, Inc103
0.0% of portfolio›$2.8K
Ascentis Independent Advisors82
0.0% of portfolio›$2.2K
Bare Financial Services, Inc80
0.0% of portfolio›$2.2K
Farmers & Merchants Investments Inc70
0.0% of portfolio›$1.9K
Bear Mountain Capital, Inc.54
0.0% of portfolio›$1.3K
UMB Private Wealth Management, LLC45
0.0% of portfolio›$1.2K
Blue Bell Private Wealth Management, LLC39
0.0% of portfolio›$1.1K
Essential Partners LLC23
0.0% of portfolio›$624
Valley National Advisers Inc19
0.0% of portfolio›$516
Horizon Financial Services, LLC18
0.0% of portfolio›$488
Ares Financial Consulting, LLC17
0.0% of portfolio›$462
Gilpin Wealth Management, LLC15
0.0% of portfolio›$407
Capital Advisors, Ltd. LLC13
0.0% of portfolio›$0
JFS Wealth Advisors, LLC9
0.0% of portfolio›$244
SJS Investment Consulting Inc.6
0.0% of portfolio›$163
Financial Consulate, Inc6
0.0% of portfolio›$163
Davis Capital Management4
0.0% of portfolio›$108
Hughes Financial Services, LLC2
0.0% of portfolio›$52
Illumine Investment Management, LLC0
0.8% of portfolio›$1.1M
StyleTurnoverLocationFiled
Boston Trust Walden Corp
3,018,750$81.8M0.7%CoreLowBoston, MA2026-10-30
Dimensional Fund Advisors LP
1,629,751$44.2M0.0%IndexLowAustin, TX2026-11-04
Bank of New York Mellon Corp
646,548$17.5M0.0%CoreLowNew York, NY2026-11-05
Wasatch Advisors LP
535,558$14.5M0.1%GARPMediumSalt Lake City, UT2026-10-13
Principal Financial Group Inc
501,171$13.6M0.0%CoreLowDes Moines, IA2026-11-02
Bridge City Capital, LLC
334,912$9.1M1.9%ValueMediumLake Oswego, OR2026-10-29
Summit Partners L P
200,065$5.4M1.1%Agg GrowthVery LowBoston, MA2026-10-29
Hennion & Walsh Asset Management, Inc.
181,287$4.9M0.1%ValueMediumParsippany, NJ2026-10-13
Robeco Institutional Asset Management B.V.
166,833$4.5M0.0%CoreMediumRotterdam, Philippines2026-10-20
Creative Planning
153,610$4.2M0.0%IndexVery LowOverland Park, KS2026-11-02
Harbor Capital Advisors, Inc.
150,072$4.1M0.7%ValueHighChicago, IL2026-10-22
Truist Financial Corp
136,406$3.7M0.0%CoreLowCharlotte, NC2026-10-30
Citigroup Inc
89,935$2.4M0.0%CoreMediumNew York, NY2026-11-04
Verity Asset Management, Inc.
79,624$2.2M0.8%CoreMediumDurham, NC2026-10-30
Aegon Asset Management UK PLC
74,609$2.0M0.0%GrowthMediumEdinburgh, United Kingdom2026-11-04
Vest Financial, LLC
70,987$1.9M0.0%ValueMediumMclean, VA2026-10-21
Allspring Global Investments Holdings, LLC
59,510$1.6M0.0%CoreMediumCharlotte, NC2026-11-04
Summit Global Investments
52,464$1.4M0.4%CoreMediumBountiful, UT2026-10-28
Nilsine Partners, LLC
48,126$1.3M0.1%CoreMediumGreenwood Village, CO2026-11-02
Thrivent Financial for Lutherans
46,181$1.3M0.0%GARPMediumMinneapolis, MN2026-11-05
Asset Management One Co., Ltd.
43,821$1.2M0.0%IndexVery LowTokyo, Mexico2026-10-27
Illinois Municipal Retirement Fund
37,688$1.0M0.0%CoreMediumOak Brook, IL2026-11-05
Mirae Asset Global Investments Co., Ltd.
35,622$965.7K0.0%GrowthLowSeoul, Malaysia2026-11-03
Y-Intercept (Hong Kong) Ltd
33,489$907.9K0.0%ValueVery HighHong Kong, South Korea2026-10-16
Evergreen Capital Management LLC
32,999$894.6K0.0%GARPMediumBellevue, WA2026-10-23
Louisiana State Employees Retirement System
30,900$837.7K0.0%IndexLowBaton Rouge, LA2026-10-20
ABN Amro Investment Solutions
29,586$802.1K0.0%GrowthLowParis Cedex 008, India2026-10-21
Strs Ohio
29,500$799.7K0.0%CoreMediumColumbus, OH2026-10-30
State of Alaska, Department of Revenue
24,616$666.0K0.0%CoreVery LowJuneau, AK2026-10-15
Inspire Investing, LLC
23,150$627.6K0.0%GARPHighMeridian, ID2026-10-22
Unique Wealth Strategies, LLC
21,365$798.2K0.3%CoreMediumBurr Ridge, IL2026-10-13
Arizona State Retirement System
19,271$522.4K0.0%IndexVery LowPhoenix, AZ2026-11-03
Amalgamated Bank
18,819$510.0K0.0%CoreVery LowNew York, NY2026-10-23
Yousif Capital Management, LLC
18,418$499.3K0.0%IndexVery LowBloomfield Hills, MI2026-10-22
Simplex Trading, LLC
17,856$484.1K0.0%CoreVery HighChicago, IL2026-11-04
New York State Teachers Retirement System
17,712$480.0K0.0%CoreVery LowAlbany, NY2026-10-22
Linden Thomas Advisory Services, LLC
17,289$468.7K0.0%CoreLowCharlotte, NC2026-10-19
Commonwealth of Pennsylvania Public School Empls Retrmt SYS
17,108$463.8K0.0%CoreLowHarrisburg, PA2026-11-03
Oregon Public Employees Retirement Fund
16,318$442.4K0.0%IndexVery LowTigard, OR2026-10-30
Maryland State Retirement & Pension System
16,217$439.6K0.0%IndexVery LowBaltimore, MD2026-11-05
Fifth Third Bancorp
15,666$424.7K0.0%IndexVery LowCincinnati, OH2026-11-05
DekaBank Deutsche Girozentrale
14,400$388.0K0.0%CoreLowFrankfurt, Hong Kong2026-10-27
Park Avenue Securities LLC
14,229$386.0K0.0%ETFMediumNew York, NY2026-10-26
Commonwealth Equity Services, LLC
14,149$383.6K0.0%ETFLowWaltham, MA2026-11-02
Abel Hall, LLC
12,666$343.4K0.1%CoreMediumBaton Rouge, LA2026-10-19
US Bancorp \de\
11,988$325.0K0.0%IndexLowMinneapolis, MN2026-11-05
Caitong International Asset Management Co., Ltd
11,106$301.1K0.0%GrowthVery HighHong Kong, South Korea2026-10-29
Pictet Asset Management Holding SA
10,290$279.0K0.0%GrowthMediumCarouge, Switzerland2026-11-03
ProShare Advisors LLC
9,944$269.6K0.0%GrowthLowBethesda, MD2026-10-29
Hohimer Wealth Management, LLC
9,926$269.1K0.0%CoreHighSeattle, WA2026-11-04
Larson Financial Group LLC
9,676$262.3K0.0%GrowthLowSt Louis, MO2026-11-05
Swiss Life Asset Management Ltd
8,939$242.3K0.0%CoreLowZurich, Switzerland2026-11-03
Mutual of America Capital Management LLC
8,285$224.6K0.0%IndexLowNew York, NY2026-10-23
LeConte Wealth Management, LLC
7,512$203.7K0.1%GrowthMediumMaryville, TN2026-10-20
Gamma Investing LLC
7,079$191.9K0.0%IndexVery LowFoster City, CA2026-10-08
Bayforest Capital Ltd
6,254$169.5K0.3%Deep ValueVery HighLondon, United Kingdom2026-11-03
Nisa Investment Advisors, LLC
4,474$121.3K0.0%IndexVery LowSt. Louis, MO2026-10-20
KBC Group NV
3,197$87.0K0.0%CoreMediumBrussels, Czech Republic2026-10-22
Sterling Capital Management LLC
2,413$65.4K0.0%GARPMediumCharlotte, NC2026-10-22
Signaturefd, LLC
1,687$45.7K0.0%IndexLowAtlanta, GA2026-10-23
Spire Wealth Management
1,510$40.9K0.0%GrowthMediumMclean, VA2026-10-30
MassMutual Private Wealth & Trust, FSB
1,455$39.4K0.0%CoreLowSpringfield, MA2026-10-05
Farther Finance Advisors, LLC
1,343$36.4K0.0%IndexLowSan Francisco, CA2026-10-08
Salomon & Ludwin, LLC
1,325$35.9K0.0%ETFVery LowRichmond, VA2026-10-29
Versant Capital Management, Inc
1,247$33.8K0.0%GARPLowPhoenix, AZ2026-10-02
SBI Securities Co., Ltd.
948$25.7K0.0%Agg GrowthLowTokyo, Mexico2026-10-22
Pinnacle Wealth Planning Services, Inc.
885$24.0K0.0%GARPLowMansfield, OH2026-10-27
First Horizon Corp
700$19.0K0.0%CoreLowMemphis, TN2026-10-26
Leonteq Securities AG
517$14.0K0.0%CoreHighZurich, Switzerland2026-10-29
Parallel Advisors, LLC
462$12.5K0.0%IndexLowSan Francisco, CA2026-11-03
Marquette Asset Management, LLC
382$10.4K0.0%ETFVery LowMinneapolis, MN2026-10-09
Bell Investment Advisors, Inc
331$9.0K0.0%ETFVery LowOrinda, CA2026-10-29
EverSource Wealth Advisors, LLC
326$8.8K0.0%CoreMediumBirmingham, AL2026-11-04
Assetmark, Inc
260$7.0K0.0%ETFLowConcord, CA2026-10-21
First Pacific Financial
230$6.2K0.0%ETFLowVancouver, WA2026-10-14
Root Financial Partners, LLC
154$4.2K0.0%ETFMediumEncinitas, CA2026-10-21
Parkside Financial Bank & Trust
146$4.0K0.0%CoreVery LowSaint Louis, MO2026-10-27
Private Wealth Management Group, LLC
112$3.0K0.0%ETFLowPrinceton, NJ2026-10-19
IFP Advisors, Inc
103$2.8K0.0%GrowthLowTampa, FL2026-10-16
Ascentis Independent Advisors
82$2.2K0.0%ETFLowDallas, TX2026-11-03
Bare Financial Services, Inc
80$2.2K0.0%ETFVery LowGap, PA2026-11-04
Farmers & Merchants Investments Inc
70$1.9K0.0%CoreVery LowLincoln, NE2026-10-22
Bear Mountain Capital, Inc.
54$1.3K0.0%ETFLowSeattle, WA2026-11-04
UMB Private Wealth Management, LLC
45$1.2K0.0%GrowthN/AKansas City, MO2026-10-19
Blue Bell Private Wealth Management, LLC
39$1.1K0.0%YieldVery LowBlue Bell, PA2026-10-29
Essential Partners LLC
23$6240.0%ValueMediumRancho Santa Fe, CA2026-10-14
Valley National Advisers Inc
19$5160.0%ETFLowBethlehem, PA2026-10-23
Horizon Financial Services, LLC
18$4880.0%ETFLowWinston Salem, NC2026-11-04
Ares Financial Consulting, LLC
17$4620.0%CoreLowCalabasas, CA2026-10-19
Gilpin Wealth Management, LLC
15$4070.0%GrowthLowDenver, CO2026-10-09
Capital Advisors, Ltd. LLC
13$00.0%ETFLowShaker Heights, OH2026-10-27
JFS Wealth Advisors, LLC
9$2440.0%ETFVery LowHermitage, PA2026-11-03
SJS Investment Consulting Inc.
6$1630.0%ETFVery LowSylvania, OH2026-10-26
Financial Consulate, Inc
6$1630.0%ETFLowHunt Valley, MD2026-10-23
Davis Capital Management
4$1080.0%CoreLowJacksonville, FL2026-10-08
Hughes Financial Services, LLC
2$520.0%ETFLowHerndon, VA2026-10-30
Illumine Investment Management, LLC
0$1.1M0.8%Agg GrowthVery LowPoulsbo, WA2026-10-22