SUMMIT PARTNERS L P ATEN — A10 NETWORKS, INC.

Ownership history in SUMMIT PARTNERS L P  ·  48 quarters on record

AI Ownership Summary

SUMMIT PARTNERS L P reported A10 NETWORKS, INC. (ATEN) in 48 quarterly 13F filings from 2023 Q4 through 2026 Q1. Peak portfolio weight reached 2.95% in 2024 Q1. The latest visible filing shows ATEN at 0.69% of the fund.

This page tracks quarterly shares, estimated market value, portfolio weight, filing dates, and disclosure-aligned stock prices directly from SEC EDGAR 13F filings. Older history is available after unlock; the visible window still shows the most recent pattern.

What this ATEN ownership page tells you

This page is designed to answer the real investor question behind a 13F filing: how meaningful was SUMMIT PARTNERS L P's position in A10 NETWORKS, INC., and how did that conviction change over time? You can read the holding window, peak weight, latest reported size, disclosure timing, and quarter-by-quarter changes without piecing the story together from raw SEC rows.

Freshest filing
Latest Reported Filing
2026 Q1

ATEN was reported at 0.69% of portfolio in the most recent visible filing.

High-water mark
Peak Conviction
2.95% in 2024 Q1

Peak weight helps separate a token disclosure from a real conviction holding the fund genuinely cared about.

Time in book
Holding Window
2023 Q4 to 2026 Q1

Longer holding windows often tell a very different story from short-lived tactical trades or one-quarter experiments.

Decision context
Why It Matters
Position size beats headlines

Knowing that a fund owned a stock is useful. Knowing whether it was a 0.20% placeholder or a true high-conviction position is where the signal actually starts.

ATEN stock page SUMMIT PARTNERS L P fund profile SUMMIT PARTNERS L P full holdings
How SUMMIT PARTNERS L P held ATEN — position size vs. price
% of Fund (quarterly)    ATEN price (quarter-end, indexed to 100)    SPY (indexed to 100)    QQQ (indexed to 100)
📋 Quarterly Holdings History 10 quarters  ▾
Quarter Action Sold % After 3M Timing Shares Change Chg % % of Fund Mkt Value Filed Price (Filed)
2026 Q1 ADDED — — — 200,065 +12,698 +6.8% 0.69% $4.6M 2026-05-08 $27.80
2025 Q4 UNCHANGED — — — 187,367 — 0% 0.32% $3.3M 2026-02-06 $19.61
2025 Q3 UNCHANGED — — — 187,367 — 0% 0.37% $3.4M 2025-11-04 $17.41
2025 Q2 UNCHANGED — — — 187,367 — 0% 0.26% $3.6M 2025-07-16 $17.82
2025 Q1 ADDED — — — 187,367 +12,903 +7.4% 0.19% $3.1M 2025-05-05 $16.35
2024 Q4 REDUCED 71.2% -11.0% ✅ 174,464 -431,799 -71.2% 0.14% $3.2M 2025-02-04 $19.96
2024 Q3 UNCHANGED — — — 606,263 — 0% 0.39% $8.8M 2024-10-31 $14.36
2024 Q2 REDUCED 84.5% +4.7% ❌ 606,263 -3,296,047 -84.5% 0.50% $8.4M 2024-07-18 $13.46
2024 Q1 ADDED — — — 3,902,310 +14,104 +0.4% 2.95% $53.4M 2024-05-15 $15.48
2023 Q4 UNCHANGED — — — 3,888,206 — 0% 1.87% $51.2M 2024-01-12 $13.11
38 older quarters hidden  —  Sign in free or upgrade to Premium to see full history

🏢 Other funds also holding ATEN

As of 2026 Q1 — sorted by position size

Illumine Investment Management, LLC 0.76% Verity Asset Management, Inc. 3Y 7Y 0.6% Boston Trust Walden Corp 3Y 7Y 0.41% HARBOR CAPITAL ADVISORS, INC. 3Y 0.35% DEPRINCE RACE & ZOLLO INC 3Y 7Y 0.25% 1492 Capital Management LLC 3Y 7Y 0.23% PEREGRINE CAPITAL MANAGEMENT LLC 3Y 7Y 0.19% AlphaQuest LLC 0.16% Banque Cantonale Vaudoise 3Y 0.12% Nilsine Partners, LLC 0.12%

FAQ About SUMMIT PARTNERS L P and ATEN

These are the practical questions this page is built to answer before you even open the full history table.

How long has SUMMIT PARTNERS L P reported owning ATEN?

SUMMIT PARTNERS L P reported ATEN across 10 quarterly 13F filings, from 2023 Q4 through 2026 Q1.

What was the largest reported ATEN position in SUMMIT PARTNERS L P's portfolio?

The largest reported portfolio weight for ATEN was 2.95% in 2024 Q1.

What is the latest reported ATEN position on this page?

The most recent filing on this page is 2026 Q1, when SUMMIT PARTNERS L P reported 200,065 shares, equal to 0.69% of portfolio, with an estimated market value of $4.6M.

What does the chart on this ATEN ownership page compare?

The chart compares SUMMIT PARTNERS L P's quarterly ATEN portfolio weight with the stock's indexed share price, so you can see whether the fund was building, trimming, or holding the position as price moved.

How well did SUMMIT PARTNERS L P time their ATEN position?

Based on 13F filing dates vs. subsequent ATEN price moves, SUMMIT PARTNERS L P correctly timed 10 out of 16 reported position changes (62%).

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