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Of the 14 tracked institutions holding ATEN, 7 have a 3-year clone track record — 6 of them beat the S&P. Average holder's clone alpha: +3.9pt. It's a gauge of who owns the name, not just how many.
Among the 14 tracked institutional investors we monitor, ATEN (A10 NETWORKS INC) is held with a combined value of $991.58M across 30,603,480 shares. The largest holder is BlackRock, Inc. with a position worth $506.92M. Grantham, Mayo, Van Otterloo & Co. LLC opened a new position in the most recent quarter. 5 funds increased their holdings. 8 funds reduced their position.
Total Institutional Value
$991.58M
Total Shares Held
30,603,480
Institutional Holders
14
Ranked by estimated dollars moved (share change × implied price). 13F data lags up to 45 days.
| # | Fund | Value↓ | Portfolio % | Change |
|---|---|---|---|---|
| 1 | BlackRock, Inc. | $506.92M | 0.01% | +3.7% |
| 2 | VANGUARD GROUP INC | $128.11M | 0.00% | +0.1% |
| 3 | STATE STREET CORP | $115.17M | 0.00% | -0.2% |
| 4 | WELLINGTON MANAGEMENT GROUP LLP | $73.22M | 0.01% | -5.5% |
| 5 | RENAISSANCE TECHNOLOGIES LLC | $56.80M | 0.08% | -14.8% |
| 6 | FMR LLC | $53.57M | 0.00% | +5001.7% |
| 7 | PRICE T ROWE ASSOCIATES INC /MD/ | $33.42M | 0.00% | -16.6% |
| 8 | TWO SIGMA ADVISERS, LP | $8.39M | 0.02% | +4.5% |
| 9 | MILLENNIUM MANAGEMENT LLC | $6.56M | 0.00% | -58.7% |
| 10 | CITADEL ADVISORS LLC | $3.48M | 0.00% | -81.9% |
SEC Schedule 13D (activist) and 13G (passive) filings for ATEN. Filed when an investor acquires 5%+ ownership.
As of the latest SEC 13F filings, BlackRock, Inc. is the largest institutional holder of ATEN with a position worth $506.92M, representing 0.01% of their portfolio. In total, 14 institutional investors hold ATEN with a combined value of $991.58M.
In the most recent quarter, 1 fund opened a new position in ATEN. Additionally, 5 increased their holdings and 8 reduced their positions.
Institutional investors hold $991.58M worth of ATEN stock across 14 positions. The largest institutional holder is BlackRock, Inc. with $506.92M in holdings.
A 13F filing is a quarterly report required by the SEC from institutional investment managers with over $100 million in assets. It discloses their holdings in U.S. equities. For ATEN, these filings reveal which major funds are accumulating or reducing positions, providing insights into institutional sentiment.
Get notified when hedge funds change their ATEN positions.
Alpha = the manager's 3-year clone return minus the S&P 500. A skilled roster is a stronger tell than a crowded one — though even skilled managers' edge doesn't reliably survive the 13F disclosure lag. Why →
Last Close
$27.63
2026-10-02
YTD
+59.3%
51% of 52-week range
