SUMMIT PARTNERS PUBLIC ASSET MANAGEMENT, LLC SIMO — SILICON MOTION TECHNOLOGY CO

Ownership history in SUMMIT PARTNERS PUBLIC ASSET MANAGEMENT, LLC  ·  19 quarters on record

AI Ownership Summary

SUMMIT PARTNERS PUBLIC ASSET MANAGEMENT, LLC reported SILICON MOTION TECHNOLOGY CO (SIMO) in 19 quarterly 13F filings from 2023 Q4 through 2025 Q4. Peak portfolio weight reached 1.46% in 2024 Q2. The latest visible filing shows SIMO at 1.03% 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 SIMO ownership page tells you

This page is designed to answer the real investor question behind a 13F filing: how meaningful was SUMMIT PARTNERS PUBLIC ASSET MANAGEMENT, LLC's position in SILICON MOTION TECHNOLOGY CO, 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
2025 Q4

SIMO was reported at 1.03% of portfolio in the most recent visible filing.

High-water mark
Peak Conviction
1.46% in 2024 Q2

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 2025 Q4

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.

SIMO stock page SUMMIT PARTNERS PUBLIC ASSET MANAGEMENT, LLC fund profile SUMMIT PARTNERS PUBLIC ASSET MANAGEMENT, LLC full holdings
How SUMMIT PARTNERS PUBLIC ASSET MANAGEMENT, LLC held SIMO — position size vs. price
% of Fund (quarterly)    SIMO price (quarter-end, indexed to 100)    SPY (indexed to 100)    QQQ (indexed to 100)
📋 Quarterly Holdings History 15 quarters  ▾
Quarter Action Sold % After 3M Timing Shares Change Chg % % of Fund Mkt Value Filed Price (Filed)
2025 Q4 ADDED — — — 534,932 +467,932 +698.4% 1.03% $49.6M 2026-02-14 (Est.) $136.28
2025 Q3 REDUCED 70.2% -5.4% ✅ 67,000 -158,000 -70.2% 0.13% $6.4M 2025-11-14 $86.41
2025 Q3 REDUCED 59.7% -5.4% ✅ 225,000 -333,005 -59.7% 0.44% $21.3M 2025-11-14 $86.41
2025 Q3 ADDED — — — 558,005 +44,068 +8.6% 1.10% $52.9M 2025-11-14 $86.41
2025 Q2 ADDED — — — 513,937 +230,025 +81.0% 0.98% $38.6M 2025-08-14 $74.76
2025 Q1 ADDED — — — 283,912 +82,312 +40.8% 0.37% $14.4M 2025-05-15 $60.19
2024 Q4 REDUCED 60.2% -5.6% ✅ 201,600 -304,405 -60.2% 0.21% $10.9M 2025-02-14 $55.04
2024 Q4 ADDED — — — 506,005 +371,005 +274.8% 0.52% $27.3M 2025-02-14 $55.04
2024 Q3 REDUCED 56.3% -9.2% ✅ 135,000 -174,099 -56.3% 0.25% $8.2M 2024-11-14 $52.17
2024 Q3 ADDED — — — 309,099 +59,099 +23.6% 0.58% $18.8M 2024-11-14 $52.17
2024 Q2 REDUCED 47.2% -24.4% ✅ 250,000 -223,290 -47.2% 0.77% $20.2M 2024-08-14 $60.38
2024 Q2 ADDED — — — 473,290 +95,303 +25.2% 1.46% $38.3M 2024-08-14 $60.38
2024 Q1 ADDED — — — 377,987 +347,987 +1160.0% 1.00% $29.1M 2024-05-15 $72.08
2023 Q4 REDUCED 86.3% +31.0% ❌ 30,000 -188,700 -86.3% 0.08% $1.8M 2024-02-14 $64.52
2023 Q4 REDUCED 65.3% +31.0% ❌ 218,700 -411,506 -65.3% 0.56% $13.4M 2024-02-14 $64.52
4 older quarters hidden  —  Sign in free or upgrade to Premium to see full history

🏢 Other funds also holding SIMO

As of 2026 Q1 — sorted by position size

REINHART PARTNERS, LLC. 3Y 7Y 4.24% TEALWOOD ASSET MANAGEMENT INC 3Y 7Y 0.88% BRIAN LOW FINANCIAL GROUP, LLC 0.8% ALPINE ASSOCIATES MANAGEMENT INC. 3Y 7Y 0.77% Skylands Capital, LLC 3Y 7Y 0.72% HARBOR CAPITAL ADVISORS, INC. 3Y 0.58% OVERSEA-CHINESE BANKING Corp Ltd 3Y 0.16% Henry James International Management Inc. 3Y 7Y 0.15% NAPLES GLOBAL ADVISORS, LLC 3Y 7Y 0.14% Robeco Institutional Asset Management B.V. 3Y 7Y 0.1%

FAQ About SUMMIT PARTNERS PUBLIC ASSET MANAGEMENT, LLC and SIMO

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

How long has SUMMIT PARTNERS PUBLIC ASSET MANAGEMENT, LLC reported owning SIMO?

SUMMIT PARTNERS PUBLIC ASSET MANAGEMENT, LLC reported SIMO across 15 quarterly 13F filings, from 2023 Q4 through 2025 Q4.

What was the largest reported SIMO position in SUMMIT PARTNERS PUBLIC ASSET MANAGEMENT, LLC's portfolio?

The largest reported portfolio weight for SIMO was 1.46% in 2024 Q2.

What is the latest reported SIMO position on this page?

The most recent filing on this page is 2025 Q4, when SUMMIT PARTNERS PUBLIC ASSET MANAGEMENT, LLC reported 534,932 shares, equal to 1.03% of portfolio, with an estimated market value of $49.6M.

What does the chart on this SIMO ownership page compare?

The chart compares SUMMIT PARTNERS PUBLIC ASSET MANAGEMENT, LLC's quarterly SIMO 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 PUBLIC ASSET MANAGEMENT, LLC time their SIMO position?

Based on 13F filing dates vs. subsequent SIMO price moves, SUMMIT PARTNERS PUBLIC ASSET MANAGEMENT, LLC correctly timed 7 out of 18 reported position changes (39%). The annualised alpha on SIMO relative to SPY over the holding period was +23.4%.

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