AOSL — Alpha & Omega Semiconductor com

Ownership history in OBERWEIS ASSET MANAGEMENT INC/  ·  15 quarters on record

AI Ownership Summary

OBERWEIS ASSET MANAGEMENT INC/ reported Alpha & Omega Semiconductor com (AOSL) in 15 quarterly 13F filings from 2024 Q2 through 2025 Q3. Peak portfolio weight reached 0.41% in 2024 Q2. The latest visible filing shows AOSL at 0.29% 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 AOSL ownership page tells you

This page is designed to answer the real investor question behind a 13F filing: how meaningful was OBERWEIS ASSET MANAGEMENT INC/'s position in Alpha & Omega Semiconductor com, 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 Q3

AOSL was reported at 0.29% of portfolio in the most recent visible filing.

High-water mark
Peak Conviction
0.41% 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
2024 Q2 to 2025 Q3

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.

AOSL stock page OBERWEIS ASSET MANAGEMENT INC/ fund profile OBERWEIS ASSET MANAGEMENT INC/ full holdings
How OBERWEIS ASSET MANAGEMENT INC/ held AOSL — position size vs. price
% of Fund (quarterly)    AOSL price (quarter-end, indexed to 100)
📋 Quarterly Holdings History 6 quarters  ▾
Quarter Action Shares Change Chg % % of Fund Mkt Value Filed Price (Filed)
2025 Q3 ADDED 271,100 +26,800 +11.0% 0.29% $7.6M 2025-11-17 $17.47
2025 Q2 ADDED 244,300 +66,600 +37.5% 0.27% $6.3M 2025-08-14 $27.06
2025 Q1 UNCHANGED 177,700 — 0% 0.22% $4.4M 2025-05-15 $23.46
2024 Q4 REDUCED 177,700 -27,000 -13.2% 0.31% $6.6M 2025-02-14 $34.74
2024 Q3 ADDED 204,700 +24,700 +13.7% 0.39% $7.6M 2024-11-14 $29.85
2024 Q2 ADDED 180,000 +131,300 +269.6% 0.41% $6.7M 2024-08-14 $35.09
9 older quarters hidden  —  Sign in free or upgrade to Premium to see full history

🏢 Other funds also holding AOSL

As of 2026 Q1 — sorted by position size

WEDGE CAPITAL MANAGEMENT L L P/NC 3Y 7Y 0.05% GAMMA Investing LLC 0.0% Versant Capital Management, Inc 3Y 7Y 0.0% EASTERN BANK 3Y 7Y 0.0% True Wealth Design, LLC 3Y 0.0% SIGNATUREFD, LLC 3Y 7Y 0.0% Farther Finance Advisors, LLC 0.0% MassMutual Private Wealth & Trust, FSB 3Y 7Y 0.0% IFP Advisors, Inc 3Y 7Y 0.0%

FAQ About OBERWEIS ASSET MANAGEMENT INC/ and AOSL

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

How long has OBERWEIS ASSET MANAGEMENT INC/ reported owning AOSL?

OBERWEIS ASSET MANAGEMENT INC/ reported AOSL across 6 quarterly 13F filings, from 2024 Q2 through 2025 Q3.

What was the largest reported AOSL position in OBERWEIS ASSET MANAGEMENT INC/'s portfolio?

The largest reported portfolio weight for AOSL was 0.41% in 2024 Q2.

What is the latest reported AOSL position on this page?

The most recent filing on this page is 2025 Q3, when OBERWEIS ASSET MANAGEMENT INC/ reported 271,100 shares, equal to 0.29% of portfolio, with an estimated market value of $7.6M.

What does the chart on this AOSL ownership page compare?

The chart compares OBERWEIS ASSET MANAGEMENT INC/'s quarterly AOSL 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.

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