Home › Stocks › ATEN

ATEN — A10 NETWORKS INC

Reported value held$1.38B
Funds holding (latest)44
SectorCommunication Services
Funds holding (Q2 2026)37
Institutional value$1.24B · 69.20M sh
New / Add / Cut / Exit2 / 17 / 17 / 1
Top-5 / Top-10 concentration62.3% / 79.7%
Institutional holdings change Accumulating +1.3% (+854.66K sh)
Institutional value change Up +64.1%

As of Q2 2026, 37 SEC-registered investment managers reported holding ATEN (A10 NETWORKS INC) in their latest 13F filings, with a combined reported value of $1.24B across 69.20M shares. That is +1.3% by share count (+854.66K shares) versus the previous quarter, while reported value moved +64.1%. Ownership is concentrated: the five largest holders account for 62.3% of reported value and the top ten for 79.7%.

Compared with the prior quarter, 2 opened new positions, 17 added to existing stakes, 17 trimmed, 1 exited entirely. 13F holdings are quarter-end snapshots, so these moves reflect positioning as of Q2 2026, not real-time trading.

ATEN is classified in the Communication Services sector.

All figures on this page are computed from SEC Form 13F quarterly filings. 13F filers disclose long positions of $100,000 or more within 45 days of quarter end; short positions, options overlays and intra-quarter trades are not included, so treat the numbers as a quarterly snapshot of institutional ownership rather than real-time positioning.

Q2 2026 — 37 funds

FundSharesValuePortfolio WeightChange
BlackRock Inc history 13.57M $506.92M 0.01% Reduce
Wellington Management Group history 1.96M $73.22M 0.01% Reduce
Geode Capital Management history 1.81M $67.77M 0.00% Add
Goldman Sachs Group history 1.78M $66.69M 0.01% Add
Renaissance Technologies history 1.52M $56.80M 0.08% Reduce
Arrowstreet Capital history 1.44M $53.71M 0.02% Reduce
Invesco Ltd history 1.24M $46.44M 0.00% Add
Two Sigma Investments history 1.12M $42.03M 0.03% Reduce
Prudential Financial history 1.05M $39.17M 0.04% Add
Morgan Stanley history 908.08K $33.93M 0.00% Add
Charles Schwab Investment Management history 761.68K $28.46M 0.00% Add
Northern Trust Corp history 756.48K $28.26M 0.00% Add
Davidson Kempner Capital Management history 15.00M $25.44M 0.34% New
Royce & Associates history 597.65K $22.33M 0.18% Reduce
D. E. Shaw & Co history 547.58K $20.46M 0.01% Reduce
Fidelity Management & Research (FMR) history 11.00M $18.66M 0.00% Add
Bank of America Corp history 461.39K $17.24M 0.00% Add
Principal Global Investors history 446.42K $16.68M 0.01% Add
Wells Fargo & Co history 329.53K $12.31M 0.00% Reduce
PSP Investments history 247.32K $9.24M 0.02% Reduce
UBS Group AG history 4.99M $8.47M 0.00% Add
Legal & General Investment Management America history 189.45K $7.08M 0.00% Reduce
Millennium Management history 375.58K $6.90M 0.00% Reduce
Citadel Advisors history 136.94K $5.12M 0.00% Reduce
Citigroup Inc history 128.37K $4.80M 0.00% Add
Franklin Resources history 99.73K $3.73M 0.00% Reduce
AQR Capital Management history 83.21K $3.11M 0.00% Add
JPMorgan Chase & Co history 1.79M $2.88M 0.00% New
CPP Investments history 75.50K $2.82M 0.00% Reduce
Deutsche Bank AG history 1.40M $2.37M 0.00% Add
BNY Mellon history 900.00K $1.45M 0.00% Add
Amundi US history 35.47K $1.33M 0.00% Reduce
Manulife Financial history 29.96K $1.12M 0.00% Add
Norges Bank Investment Management history 26.27K $981.52K 0.00% Hold
PNC Financial Services history 3.90K $145.85K 0.00% Reduce
T. Rowe Price Associates history 894.40K $33.42K 0.00% Reduce
Lazard Asset Management history 1.48M $25.18K 0.00% Add

Q1 2026 — 35 funds

FundSharesValuePortfolio WeightChange
BlackRock Inc history 25.77M $313.84M 0.01% Hold
Wellington Management Group history 2.07M $47.96M 0.01% Add
Renaissance Technologies history 1.78M $41.27M 0.07% Reduce
Geode Capital Management history 1.72M $39.71M 0.00% Reduce
Arrowstreet Capital history 1.50M $34.61M 0.02% Add
Two Sigma Investments history 1.32M $30.52M 0.03% Add
Goldman Sachs Group history 1.19M $27.44M 0.00% Add
D. E. Shaw & Co history 23.61M $26.91M 0.02% Add
Prudential Financial history 885.21K $20.47M 0.03% Add
Royce & Associates history 817.43K $18.90M 0.19% Add
Morgan Stanley history 813.09K $18.80M 0.00% Add
Charles Schwab Investment Management history 743.97K $17.20M 0.00% Add
Northern Trust Corp history 704.40K $16.29M 0.00% Add
BNY Mellon history 660.64K $15.27M 0.00% Reduce
Citadel Advisors history 514.02K $11.88M 0.00% Add
Principal Global Investors history 436.28K $10.09M 0.01% Reduce
Millennium Management history 424.92K $9.82M 0.00% Add
UBS Group AG history 390.06K $9.02M 0.00% Reduce
Invesco Ltd history 362.67K $8.38M 0.00% Reduce
Wells Fargo & Co history 332.53K $7.69M 0.00% Add
PSP Investments history 255.79K $5.91M 0.02% Add
Bank of America Corp history 206.67K $4.78M 0.00% Reduce
Legal & General Investment Management America history 190.62K $4.41M 0.00% Reduce
Franklin Resources history 104.00K $2.40M 0.00% Add
Janus Henderson Group history 87.50K $2.02M 0.00% Add
Deutsche Bank AG history 80.53K $1.86M 0.00% Add
CPP Investments history 78.30K $1.81M 0.00% Reduce
AQR Capital Management history 49.85K $1.15M 0.00% Add
Citigroup Inc history 45.74K $1.06M 0.00% Reduce
Amundi US history 40.42K $934.42K 0.00% Add
Manulife Financial history 29.50K $682.06K 0.00% Reduce
Fidelity Management & Research (FMR) history 28.11K $649.80K 0.00% Add
Lazard Asset Management history 17.99K $416.00K 0.00% Reduce
PNC Financial Services history 3.94K $91.05K 0.00% Add
T. Rowe Price Associates history 1.07M $24.80K 0.00% Reduce

Q4 2025 — 38 funds

FundSharesValuePortfolio WeightChange
BlackRock Inc history 25.67M $242.64M 0.00% Hold
Vanguard Group history 7.24M $128.11M 0.00% Hold
Renaissance Technologies history 2.13M $37.76M 0.06% Reduce
Wellington Management Group history 2.02M $35.73M 0.01% Reduce
Geode Capital Management history 1.78M $31.45M 0.00% Add
Arrowstreet Capital history 1.10M $19.38M 0.01% Reduce
Goldman Sachs Group history 1.03M $18.30M 0.00% Add
D. E. Shaw & Co history 17.75M $18.15M 0.01% Add
Invesco Ltd history 836.18K $14.79M 0.00% Add
Morgan Stanley history 804.35K $14.23M 0.00% Add
Two Sigma Investments history 733.73K $12.98M 0.02% Add
Charles Schwab Investment Management history 728.57K $12.89M 0.00% Add
Royce & Associates history 727.41K $12.87M 0.13% Add
Northern Trust Corp history 687.73K $12.17M 0.00% Reduce
BNY Mellon history 665.65K $11.78M 0.00% Reduce
Bank of America Corp history 7.77M $10.68M 0.00% Add
Principal Global Investors history 452.25K $8.00M 0.00% Add
UBS Group AG history 430.20K $7.61M 0.00% Reduce
Wells Fargo & Co history 256.12K $4.53M 0.00% Add
PSP Investments history 248.21K $4.39M 0.01% Reduce
JPMorgan Chase & Co history 217.00K $3.84M 0.00% Reduce
Millennium Management history 212.07K $3.75M 0.00% Add
Legal & General Investment Management America history 208.06K $3.68M 0.00% Reduce
Citadel Advisors history 152.02K $2.69M 0.00% Reduce
Franklin Resources history 102.36K $1.81M 0.00% Reduce
CPP Investments history 82.00K $1.45M 0.00% Reduce
Prudential Financial history 73.41K $1.30M 0.00% Reduce
Deutsche Bank AG history 73.29K $1.30M 0.00% Add
Citigroup Inc history 65.06K $1.15M 0.00% Reduce
AQR Capital Management history 38.61K $682.95K 0.00% Reduce
Amundi US history 37.88K $670.17K 0.00% Reduce
Janus Henderson Group history 32.28K $570.67K 0.00% Hold
Manulife Financial history 30.76K $544.18K 0.00% Reduce
Lazard Asset Management history 28.16K $498.19K 0.00% Reduce
Norges Bank Investment Management history 26.27K $464.75K 0.00% Hold
Fidelity Management & Research (FMR) history 16.72K $295.70K 0.00% Add
PNC Financial Services history 3.45K $61.03K 0.00% Reduce
T. Rowe Price Associates history 1.54M $27.18K 0.00% Reduce

Q3 2025 — 38 funds

FundSharesValuePortfolio WeightChange
BlackRock Inc history 25.74M $249.08M 0.01% Reduce
Vanguard Group history 7.24M $131.32M 0.00% Reduce
Renaissance Technologies history 2.39M $43.32M 0.06% Reduce
Wellington Management Group history 2.05M $37.28M 0.01% Add
Geode Capital Management history 1.77M $32.09M 0.00% Reduce
Arrowstreet Capital history 1.23M $22.26M 0.01% Reduce
D. E. Shaw & Co history 15.01M $14.64M 0.01% Hold
Morgan Stanley history 755.48K $13.71M 0.00% Reduce
Invesco Ltd history 741.03K $13.45M 0.00% Add
Northern Trust Corp history 727.63K $13.21M 0.00% Reduce
BNY Mellon history 717.40K $13.02M 0.00% Reduce
Charles Schwab Investment Management history 709.21K $12.87M 0.00% Hold
Royce & Associates history 694.83K $12.61M 0.13% Reduce
Two Sigma Investments history 683.25K $12.40M 0.02% Add
Goldman Sachs Group history 620.18K $11.26M 0.00% Add
UBS Group AG history 606.16K $11.00M 0.00% Add
Bank of America Corp history 6.58M $9.68M 0.00% Add
Principal Global Investors history 421.42K $7.65M 0.00% Add
JPMorgan Chase & Co history 380.16K $6.90M 0.00% Add
Citadel Advisors history 379.59K $6.89M 0.00% Add
PSP Investments history 281.46K $5.11M 0.02% Add
Legal & General Investment Management America history 214.47K $3.89M 0.00% Reduce
Wells Fargo & Co history 190.33K $3.45M 0.00% Reduce
Prudential Financial history 186.53K $3.39M 0.00% Reduce
Marshall Wace history 175.08K $3.18M 0.00% Reduce
Franklin Resources history 153.03K $2.82M 0.00% Add
Millennium Management history 144.84K $2.63M 0.00% Add
CPP Investments history 85.30K $1.55M 0.00% Reduce
Citigroup Inc history 80.47K $1.46M 0.00% Reduce
Deutsche Bank AG history 71.40K $1.30M 0.00% Add
Amundi US history 46.09K $860.52K 0.00% Hold
AQR Capital Management history 42.46K $770.62K 0.00% Add
Manulife Financial history 33.46K $607.37K 0.00% Reduce
Janus Henderson Group history 32.28K $585.68K 0.00% Hold
Lazard Asset Management history 31.12K $564.86K 0.00% Reduce
Fidelity Management & Research (FMR) history 10.01K $181.58K 0.00% Add
PNC Financial Services history 3.50K $63.45K 0.00% Add
T. Rowe Price Associates history 1.57M $28.55K 0.00% Add

Q2 2025 — 50 funds

FundSharesValuePortfolio WeightChange
BlackRock Inc history 25.91M $266.64M 0.01% Add
BlackRock Inc history 25.91M $266.64M 0.01% Add
Vanguard Group history 7.33M $141.79M 0.00% Reduce
Renaissance Technologies history 2.50M $48.37M 0.06% Add
Renaissance Technologies history 2.50M $48.37M 0.06% Add
Geode Capital Management history 1.78M $34.52M 0.00% Add
Wellington Management Group history 1.47M $28.35M 0.01% Add
Arrowstreet Capital history 1.31M $25.28M 0.02% Add
Morgan Stanley history 1.05M $20.27M 0.00% Reduce
Morgan Stanley history 1.05M $20.27M 0.00% Reduce
Legal & General Investment Management America history 992.68K $19.21M 0.01% Add
Northern Trust Corp history 754.90K $14.61M 0.00% Reduce
BNY Mellon history 733.95K $14.20M 0.00% Reduce
Royce & Associates history 722.17K $13.97M 0.14% Add
Charles Schwab Investment Management history 705.73K $13.66M 0.00% Add
D. E. Shaw & Co history 15.02M $12.89M 0.01% New
Marshall Wace history 617.67K $11.95M 0.01% Add
Invesco Ltd history 596.08K $11.53M 0.00% Reduce
Two Sigma Investments history 573.16K $11.09M 0.02% Add
Two Sigma Investments history 573.16K $11.09M 0.02% Add
Goldman Sachs Group history 556.70K $10.77M 0.00% Reduce
Goldman Sachs Group history 556.70K $10.77M 0.00% Reduce
Principal Global Investors history 413.63K $8.00M 0.00% Reduce
UBS Group AG history 390.25K $7.55M 0.00% Add
Bank of America Corp history 4.52M $6.33M 0.00% Add
JPMorgan Chase & Co history 319.79K $6.19M 0.00% Reduce
JPMorgan Chase & Co history 319.79K $6.19M 0.00% Reduce
Prudential Financial history 287.39K $5.56M 0.01% Reduce
PSP Investments history 245.77K $4.76M 0.02% Add
Wells Fargo & Co history 238.45K $4.61M 0.00% Add
Citadel Advisors history 233.69K $4.52M 0.00% Reduce
Citadel Advisors history 233.69K $4.52M 0.00% Reduce
Citigroup Inc history 115.37K $2.23M 0.00% Reduce
Franklin Resources history 109.64K $2.12M 0.00% Add
CPP Investments history 98.50K $1.91M 0.00% Reduce
CPP Investments history 98.50K $1.91M 0.00% Reduce
Millennium Management history 93.13K $1.80M 0.00% Add
Deutsche Bank AG history 62.92K $1.22M 0.00% Reduce
Deutsche Bank AG history 62.92K $1.22M 0.00% Reduce
Amundi US history 46.09K $910.76K 0.00% Add
AQR Capital Management history 42.08K $814.27K 0.00% Reduce
Manulife Financial history 36.44K $705.08K 0.00% Add
Janus Henderson Group history 32.28K $624.10K 0.00% Hold
Norges Bank Investment Management history 26.27K $508.36K 0.00% Reduce
Norges Bank Investment Management history 26.27K $508.36K 0.00% Reduce
Fidelity Management & Research (FMR) history 8.63K $167.02K 0.00% Add
Fidelity Management & Research (FMR) history 8.63K $167.02K 0.00% Add
PNC Financial Services history 3.24K $62.62K 0.00% Reduce
T. Rowe Price Associates history 1.50M $29.12K 0.00% Reduce
Lazard Asset Management history 40.67K $785 0.00% Reduce

Q1 2025 — 47 funds

FundSharesValuePortfolio WeightChange
BlackRock Inc history 13.35M $218.19M 0.01% Reduce
BlackRock Inc history 13.35M $218.19M 0.01% Reduce
Vanguard Group history 7.39M $120.82M 0.00% Hold
Renaissance Technologies history 2.36M $38.50M 0.06% Add
Renaissance Technologies history 2.36M $38.50M 0.06% Add
Geode Capital Management history 1.73M $28.31M 0.00% Add
Morgan Stanley history 1.48M $24.26M 0.00% Add
Morgan Stanley history 1.48M $24.26M 0.00% Add
Wellington Management Group history 1.13M $18.47M 0.00% Add
Invesco Ltd history 1.05M $17.08M 0.00% Add
Arrowstreet Capital history 938.76K $15.34M 0.01% Add
BNY Mellon history 842.53K $13.77M 0.00% Reduce
Goldman Sachs Group history 835.25K $13.65M 0.00% Add
Goldman Sachs Group history 835.25K $13.65M 0.00% Add
Northern Trust Corp history 765.72K $12.51M 0.00% Hold
Royce & Associates history 708.37K $11.57M 0.13% Reduce
Charles Schwab Investment Management history 675.68K $11.04M 0.00% Add
Marshall Wace history 585.41K $9.57M 0.01% Reduce
Two Sigma Investments history 491.58K $8.03M 0.02% Add
Two Sigma Investments history 491.58K $8.03M 0.02% Add
JPMorgan Chase & Co history 435.31K $7.11M 0.00% Reduce
JPMorgan Chase & Co history 435.31K $7.11M 0.00% Reduce
Principal Global Investors history 416.55K $6.81M 0.00% Add
Citadel Advisors history 415.90K $6.80M 0.00% Add
Citadel Advisors history 415.90K $6.80M 0.00% Add
UBS Group AG history 369.44K $6.04M 0.00% Add
Prudential Financial history 344.30K $5.63M 0.01% Add
PSP Investments history 233.72K $3.82M 0.02% Add
Legal & General Investment Management America history 221.27K $3.62M 0.00% Reduce
Wells Fargo & Co history 181.71K $2.97M 0.00% Add
Deutsche Bank AG history 160.45K $2.62M 0.00% Reduce
Deutsche Bank AG history 160.45K $2.62M 0.00% Reduce
Citigroup Inc history 152.88K $2.50M 0.00% Reduce
Bank of America Corp history 128.41K $2.10M 0.00% Reduce
CPP Investments history 109.40K $1.79M 0.00% Add
CPP Investments history 109.40K $1.79M 0.00% Add
Franklin Resources history 108.91K $1.78M 0.00% Add
AQR Capital Management history 78.70K $1.29M 0.00% Reduce
Millennium Management history 61.59K $1.01M 0.00% Reduce
Manulife Financial history 35.70K $583.35K 0.00% Add
Amundi US history 35.30K $555.70K 0.00% Reduce
Janus Henderson Group history 32.28K $540.17K 0.00% Add
Fidelity Management & Research (FMR) history 6.67K $109.02K 0.00% Add
Fidelity Management & Research (FMR) history 6.67K $109.02K 0.00% Add
PNC Financial Services history 3.40K $55.56K 0.00% Reduce
T. Rowe Price Associates history 1.52M $24.79K 0.00% Add
Lazard Asset Management history 166.26K $2.71K 0.00% Add

View all 44 fund holders →

New Positions (Q2 2026)

Fully Exited (vs previous quarter)

Fund Position History — shares by quarter (top 20 funds)

FundQ2 2026Q1 2026Q4 2025Q3 2025Q2 2025Q1 2025Q4 2024Q3 2024Q2 2024Q1 2024Q4 2023Q3 2023Q2 2023Q1 2023Q4 2022Q3 2022Q2 2022Q1 2022Q4 2021Q3 2021
BlackRock Inc 13.57M 25.77M 25.67M 25.74M 25.91M 13.35M 13.60M 13.11M — — — — — — — — — — — —
Wellington Management Group 1.96M 2.07M 2.02M 2.05M 1.47M 1.13M 230.20K — — — — — — — 34.73K 19.71K 43.86K — — —
Geode Capital Management 1.81M 1.72M 1.78M 1.77M 1.78M 1.73M 1.68M 1.66M 1.57M 1.52M 1.48M 1.39M 1.32M 1.21M 1.15M 1.14M 1.06M 1.02M 1.08M 1.11M
Goldman Sachs Group 1.78M 1.19M 1.03M 620.18K 556.70K 835.25K 784.17K 481.24K 758.89K 352.13K 628.43K 585.58K 798.85K 450.86K 711.42K 523.24K 419.78K 630.15K 681.03K 230.08K
Renaissance Technologies 1.52M 1.78M 2.13M 2.39M 2.50M 2.36M 1.93M 1.95M 2.28M 2.15M 2.32M 2.43M 2.50M 2.49M 2.48M 2.68M 2.96M 2.86M 2.95M 2.93M
Arrowstreet Capital 1.44M 1.50M 1.10M 1.23M 1.31M 938.76K 246.97K 62.01K — 29.89K — — 161.95K 246.79K 77.43K — — — 19.94K —
Invesco Ltd 1.24M 362.67K 836.18K 741.03K 596.08K 1.05M 367.20K 368.26K 308.31K 313.57K 341.56K 570.14K 412.12K 404.69K 557.46K 672.80K 849.80K 34.23K 57.88K 53.62K
Two Sigma Investments 1.12M 1.32M 733.73K 683.25K 573.16K 491.58K 229.65K 268.32K 169.97K 110.75K 337.91K 451.43K 388.89K 438.74K 281.62K — 224.44K 340.27K 641.64K 624.07K
Prudential Financial 1.05M 885.21K 73.41K 186.53K 287.39K 344.30K 272.39K 152.54K 168.64K 79.30K 80.25K 89.89K 107.41K 119.30K 121.02K 273.51K 624.52K 587.67K 496.19K 417.09K
Morgan Stanley 908.08K 813.09K 804.35K 755.48K 1.05M 1.48M 1.15M 2.27M 2.03M 1.33M 1.60M 1.81M 1.40M 1.28M 1.05M 740.44K 606.03K 201.64K 128.99K 376.45K
Charles Schwab Investment Management 761.68K 743.97K 728.57K 709.21K 705.73K 675.68K 668.43K 650.92K 609.02K 592.45K 564.16K 619.28K 669.77K 647.76K 643.95K 645.30K 555.23K 538.46K 618.28K 620.67K
Northern Trust Corp 756.48K 704.40K 687.73K 727.63K 754.90K 765.72K 765.21K 728.32K 726.80K 750.81K 769.72K 754.87K 733.68K 638.72K 635.46K 632.19K 628.65K 560.98K 583.81K 606.06K
Davidson Kempner Capital Management 15.00M — — — — — — — — — — — — — — — — — — —
Royce & Associates 597.65K 817.43K 727.41K 694.83K 722.17K 708.37K 919.07K 842.66K 747.95K 726.99K 672.58K 547.98K 549.67K 625.29K 601.89K 697.99K 711.69K 837.79K 897.79K 1.56M
D. E. Shaw & Co 547.58K 23.61M 17.75M 15.01M 15.02M — — — 246.41K 48.67K — — 13.14K — — 51.12K 127.46K 70.43K 54.26K —
Fidelity Management & Research (FMR) 11.00M 28.11K 16.72K 10.01K 8.63K 6.67K 2.85K 2.65K 3.05K 5.99K 2.40K 2.00K 2.28K 1.84K 2.10K 1.78K 1.63K 1.18K 287 287
Bank of America Corp 461.39K 206.67K 7.77M 6.58M 4.52M 128.41K 181.96K 126.82K 130.81K 250.89K 189.85K 73.75K 186.48K 103.51K 184.53K 52.91K 106.32K 55.80K 57.35K 42.76K
Principal Global Investors 446.42K 436.28K 452.25K 421.42K 413.63K 416.55K 404.27K 389.09K 347.95K 364.39K 390.38K 392.86K 380.22K 399.12K 407.87K 435.18K 434.34K 60.69K 76.38K 11.41K
Wells Fargo & Co 329.53K 332.53K 256.12K 190.33K 238.45K 181.71K 55.05K 25.93K 26.53K 25.85K 46.38K 115.99K 635.76K 807.93K 838.98K 833.36K 864.93K 119.10K 134.64K 164.14K
PSP Investments 247.32K 255.79K 248.21K 281.46K 245.77K 233.72K 183.91K 156.73K 154.03K 144.62K 144.62K 86.10K 114.23K 112.83K 116.25K 121.47K 108.08K — — —

Download holders (CSV)