Clearstead Advisors, LLC QTRX — QUANTERIX CORP

Ownership history in Clearstead Advisors, LLC  ·  4 quarters on record

AI Ownership Summary

Clearstead Advisors, LLC reported QUANTERIX CORP (QTRX) in 4 quarterly 13F filings from 2025 Q3 through 2026 Q2. The latest visible filing shows QTRX 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 QTRX ownership page tells you

This page is designed to answer the real investor question behind a 13F filing: how meaningful was Clearstead Advisors, LLC's position in QUANTERIX CORP, 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 Q2

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

High-water mark
Peak Conviction
0.0% in 2026 Q1

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

Time in book
Holding Window
2025 Q3 to 2026 Q2

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.

QTRX stock page Clearstead Advisors, LLC fund profile Clearstead Advisors, LLC full holdings
How Clearstead Advisors, LLC held QTRX — position size vs. price
% of Fund (quarterly)    QTRX price (quarter-end, indexed to 100)    SPY (indexed to 100)    QQQ (indexed to 100)
📋 Quarterly Holdings History 4 quarters  ▾
Quarter Action Sold % After 3M Timing Shares Change Chg % % of Fund Mkt Value Filed Price (Filed)
2026 Q2 REDUCED — — — 62,261 -61,859 -49.8% 0.00% $269K 2026-08-06 $3.83
2026 Q1 ADDED — — — 124,120 +124,115 +2482300.0% 0.00% $437K 2026-05-06 $3.29
2025 Q4 REDUCED 96.2% -44.6% ✅ 5 -127 -96.2% 0.00% $32 2026-02-09 $6.17
2025 Q3 INITIATED — — — 132 — — 0.00% $717 2025-11-14 (Est.) $5.74

🏢 Other funds also holding QTRX

As of 2026 Q2 — sorted by position size

GSA CAPITAL PARTNERS LLP 3Y 7Y 0.11% PEDDOCK CAPITAL ADVISORS, LLC 3Y 7Y 0.04% Post Resch Tallon Group Inc. 0.04% First Eagle Investment Management, LLC 3Y 7Y 0.02% AXQ CAPITAL, LP 3Y 0.01% Sachetta, LLC 0.01% SCS Capital Management LLC 3Y 7Y 0.0% Quadrature Capital Ltd 3Y 7Y 0.0% HUB Investment Partners, LLC 3Y 0.0% True Wealth Design, LLC 3Y 0.0%

FAQ About Clearstead Advisors, LLC and QTRX

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

How long has Clearstead Advisors, LLC reported owning QTRX?

Clearstead Advisors, LLC reported QTRX across 4 quarterly 13F filings, from 2025 Q3 through 2026 Q2.

What was the largest reported QTRX position in Clearstead Advisors, LLC's portfolio?

The largest reported portfolio weight for QTRX was 0.00% in 2026 Q1.

What is the latest reported QTRX position on this page?

The most recent filing on this page is 2026 Q2, when Clearstead Advisors, LLC reported 62,261 shares, equal to 0.00% of portfolio, with an estimated market value of $269K.

What does the chart on this QTRX ownership page compare?

The chart compares Clearstead Advisors, LLC's quarterly QTRX 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 Clearstead Advisors, LLC time their QTRX position?

Based on 13F filing dates vs. subsequent QTRX price moves, Clearstead Advisors, LLC correctly timed 3 out of 3 reported position changes (100%). The annualised alpha on QTRX relative to SPY over the holding period was -53.0%.

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