Avanza Fonder AB OSIS — OSI SYSTEMS INC

Ownership history in Avanza Fonder AB  ·  8 quarters on record

AI Ownership Summary

Avanza Fonder AB reported OSI SYSTEMS INC (OSIS) in 8 quarterly 13F filings from 2024 Q4 through 2026 Q3. Peak portfolio weight reached 0.01% in 2025 Q1. The latest visible filing shows OSIS at 0.00% 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.

What this OSIS ownership page tells you

This page is designed to answer the real investor question behind a 13F filing: how meaningful was Avanza Fonder AB's position in OSI SYSTEMS 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 Q3

OSIS was reported at 0.00% of portfolio in the most recent visible filing.

High-water mark
Peak Conviction
0.01% in 2025 Q1

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

Time in book
Holding Window
2024 Q4 to 2026 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.

OSIS stock page Avanza Fonder AB fund profile Avanza Fonder AB full holdings
How Avanza Fonder AB held OSIS — position size vs. price
% of Fund (quarterly)    OSIS price (quarter-end, indexed to 100)    SPY (indexed to 100)    QQQ (indexed to 100)
📋 Quarterly Holdings History 8 quarters  ▾
Quarter Action Sold % After 3M Timing Shares Change Chg % % of Fund Mkt Value Filed Price (Filed)
2026 Q3 ADDED — — — 805 +480 +147.7% 0.00% $156K 2026-10-13 $194.70
2026 Q2 REDUCED 66.1% -11.7% ✅ 325 -635 -66.1% 0.00% $71K 2026-07-17 $212.66
2026 Q1 ADDED — — — 960 +11 +1.2% 0.01% $255K 2026-04-15 $305.90
2025 Q4 REDUCED 9.7% +4.1% ❌ 949 -102 -9.7% 0.01% $242K 2026-01-12 $269.12
2025 Q3 UNCHANGED — — — 1,051 — 0% 0.01% $262K 2025-10-16 $246.74
2025 Q2 REDUCED 45.5% +5.8% ❌ 1,051 -876 -45.5% 0.01% $236K 2025-07-14 $212.30
2025 Q1 REDUCED 12.7% +15.7% ❌ 1,927 -280 -12.7% 0.01% $382K 2025-04-15 $193.10
2024 Q4 INITIATED — — — 2,207 — — 0.01% $370K 2025-01-15 $163.21

🏢 Other funds also holding OSIS

As of 2026 Q3 — sorted by position size

CHATHAM CAPITAL GROUP, INC. 3Y 7Y 0.44% Stanley-Laman Group, Ltd. 3Y 7Y 0.39% GHP Investment Advisors, Inc. 3Y 7Y 0.25% Byrne Asset Management LLC 3Y 0.07% ARGENT CAPITAL MANAGEMENT LLC 3Y 7Y 0.06% WEDGE CAPITAL MANAGEMENT L L P/NC 3Y 7Y 0.05% NorthCrest Asset Manangement, LLC 3Y 0.04% Louisiana State Employees Retirement System 3Y 7Y 0.02% FULTON BANK, N.A. 3Y 7Y 0.01% WEST PACES ADVISORS INC. 0.01%

FAQ About Avanza Fonder AB and OSIS

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

How long has Avanza Fonder AB reported owning OSIS?

Avanza Fonder AB reported OSIS across 8 quarterly 13F filings, from 2024 Q4 through 2026 Q3.

What was the largest reported OSIS position in Avanza Fonder AB's portfolio?

The largest reported portfolio weight for OSIS was 0.01% in 2025 Q1.

What is the latest reported OSIS position on this page?

The most recent filing on this page is 2026 Q3, when Avanza Fonder AB reported 805 shares, equal to 0.00% of portfolio, with an estimated market value of $156K.

What does the chart on this OSIS ownership page compare?

The chart compares Avanza Fonder AB's quarterly OSIS 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 Avanza Fonder AB time their OSIS position?

Based on 13F filing dates vs. subsequent OSIS price moves, Avanza Fonder AB correctly timed 2 out of 6 reported position changes (33%). The annualised alpha on OSIS relative to SPY over the holding period was -6.4%.

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