IQ EQ FUND MANAGEMENT (IRELAND) Ltd QSI — QUANTUM SI INC

Ownership history in IQ EQ FUND MANAGEMENT (IRELAND) Ltd  ·  8 quarters on record

AI Ownership Summary

IQ EQ FUND MANAGEMENT (IRELAND) Ltd reported QUANTUM SI INC (QSI) in 8 quarterly 13F filings from 2024 Q2 through 2026 Q1. Peak portfolio weight reached 0.02% in 2025 Q2. The latest visible filing shows QSI at 0.02% 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 QSI ownership page tells you

This page is designed to answer the real investor question behind a 13F filing: how meaningful was IQ EQ FUND MANAGEMENT (IRELAND) Ltd's position in QUANTUM SI 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

QSI was reported at 0.02% of portfolio in the most recent visible filing.

High-water mark
Peak Conviction
0.02% in 2025 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 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.

QSI stock page IQ EQ FUND MANAGEMENT (IRELAND) Ltd fund profile IQ EQ FUND MANAGEMENT (IRELAND) Ltd full holdings
How IQ EQ FUND MANAGEMENT (IRELAND) Ltd held QSI — position size vs. price
% of Fund (quarterly)    QSI 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 Q1 ADDED — — — 292,107 +38,212 +15.1% 0.02% $226K 2026-05-11 $0.92
2025 Q4 ADDED — — — 253,895 +64,721 +34.2% 0.02% $279K 2026-02-12 $0.98
2025 Q3 ADDED — — — 189,174 +72,346 +61.9% 0.02% $267K 2025-11-05 $1.80
2025 Q2 ADDED — — — 116,828 +46,884 +67.0% 0.02% $229K 2025-08-01 $1.46
2025 Q1 ADDED — — — 69,944 +36,042 +106.3% 0.01% $84K 2025-05-09 $1.26
2024 Q4 ADDED — — — 33,902 +7,704 +29.4% 0.01% $92K 2025-02-12 $1.96
2024 Q3 ADDED — — — 26,198 +4,642 +21.5% 0.00% $23K 2024-10-16 $0.82
2024 Q2 INITIATED — — — 21,556 — — 0.00% $23K 2024-07-29 $1.06

🏢 Other funds also holding QSI

As of 2026 Q2 — sorted by position size

DLK Investment Management, LLC 0.01% RED REEF ADVISORS LLC 0.01% Wealth Management Associates, Inc. 0.01% ANCHYRA PARTNERS LLC 0.0% HBW ADVISORY SERVICES LLC 3Y 0.0% Abel Hall, LLC 0.0% China Universal Asset Management Co., Ltd. 3Y 0.0% Y-Intercept (Hong Kong) Ltd 3Y 0.0% Kovack Advisors, Inc. 3Y 7Y 0.0% Capital Investment Advisory Services, LLC 3Y 7Y 0.0%

FAQ About IQ EQ FUND MANAGEMENT (IRELAND) Ltd and QSI

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

How long has IQ EQ FUND MANAGEMENT (IRELAND) Ltd reported owning QSI?

IQ EQ FUND MANAGEMENT (IRELAND) Ltd reported QSI across 8 quarterly 13F filings, from 2024 Q2 through 2026 Q1.

What was the largest reported QSI position in IQ EQ FUND MANAGEMENT (IRELAND) Ltd's portfolio?

The largest reported portfolio weight for QSI was 0.02% in 2025 Q2.

What is the latest reported QSI position on this page?

The most recent filing on this page is 2026 Q1, when IQ EQ FUND MANAGEMENT (IRELAND) Ltd reported 292,107 shares, equal to 0.02% of portfolio, with an estimated market value of $226K.

What does the chart on this QSI ownership page compare?

The chart compares IQ EQ FUND MANAGEMENT (IRELAND) Ltd's quarterly QSI 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 IQ EQ FUND MANAGEMENT (IRELAND) Ltd time their QSI position?

Based on 13F filing dates vs. subsequent QSI price moves, IQ EQ FUND MANAGEMENT (IRELAND) Ltd correctly timed 3 out of 7 reported position changes (43%). The annualised alpha on QSI relative to SPY over the holding period was -23.1%.

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