Filing Flows › Companies › Quanterix › Timeline
Quanterix stock timeline
A year of the price with every insider trade, planned sale, earnings report and material 8-K marked
252 sessions−42.0% to $2.90
Quanterix (QTRX) stock fell 42% over the last 252 sessions, to $2.90. On the way it reported 4 quarters, its insiders filed 2 open-market trades, and the company filed 5 material 8-Ks. Each is marked on the price and listed with what the stock did next.
Each mark, and what followed
| Date | Kind | What | Next session | 5 sessions | 21 sessions |
|---|---|---|---|---|---|
| Aug 13, 2026 | Insider buy | Donnelly William P bought $212K | −2.4% (−3.1% vs SPY) | +1.0% (+1.4% vs SPY) | −13.5% (−12.4% vs SPY) |
| Aug 12, 2026 | Insider buy | Donnelly William P bought $75K | +11.0% (+10.7% vs SPY) | +2.1% (+2.5% vs SPY) | −4.9% (−3.2% vs SPY) |
| Aug 10, 2026 | Earnings | Earnings: missed the EPS estimate by -153.7% | −51.0% (−51.0% vs SPY) | −44.2% (−44.6% vs SPY) | −39.0% (−38.0% vs SPY) |
| Jun 9, 2026 | 8-K | Directors and officers: departures, appointments, pay | −1.3% (−1.0% vs SPY) | −1.0% (−3.1% vs SPY) | +24.0% (+22.1% vs SPY) |
| May 26, 2026 | 8-K | Directors and officers: departures, appointments, pay | −1.1% (−1.1% vs SPY) | +26.7% (+25.5% vs SPY) | +33.8% (+35.8% vs SPY) |
| May 12, 2026 | 8-K | Directors and officers: departures, appointments, pay | −1.0% (−1.6% vs SPY) | −14.8% (−14.2% vs SPY) | +4.0% (+4.1% vs SPY) |
| May 6, 2026 | Earnings | Earnings: beat the EPS estimate by 126.3% | −0.3% (−1.7% vs SPY) | −12.6% (−14.5% vs SPY) | +14.1% (+9.6% vs SPY) |
| Mar 2, 2026 | Earnings | Earnings: beat the EPS estimate by 2.1% | −3.4% (−3.5% vs SPY) | −25.8% (−23.8% vs SPY) | −64.7% (−56.7% vs SPY) |
| Jan 8, 2026 | 8-K | Directors and officers: departures, appointments, pay | +21.4% (+20.7% vs SPY) | +20.0% (+19.6% vs SPY) | −5.4% (−6.0% vs SPY) |
| Nov 20, 2025 | 8-K | Directors and officers: departures, appointments, pay | +11.9% (+11.0% vs SPY) | +20.6% (+16.0% vs SPY) | +14.0% (+8.9% vs SPY) |
| Nov 10, 2025 | Earnings | Earnings: missed the EPS estimate by -37.7% | +3.6% (+2.0% vs SPY) | +15.0% (+14.9% vs SPY) | +44.0% (+42.2% vs SPY) |
Insiders’ record here
In the year on the chart, Quanterix's insiders reported 2 open-market buys ($286K) and 0 sales ($0).
Across the whole universe (19,782 scored trades), insider buys beat the market 46% of the time and sales were followed by a lagging stock 61% of the time; buys of $1M or more 39%. Every pattern →
What this kind of 8-K usually did
| Item | 8-Ks | Next session, median | Up next session | 21 sessions, median | Typical size |
|---|---|---|---|---|---|
| 5.02 Directors and officers: departures, appointments, pay | 39,174 | −0.1% | 48% | +0.7% | ±1.4% |
Across every company in the move-odds universe, measured from the close before the filing. Every 8-K item ranked →
Report card: every quarter against the estimate → Quanterix: every quarter → Live insider trades →
Prices are daily closes; filings and trades are as filed with the SEC (Form 4 within two business days of the trade, 8-K within four of the event). Moves after a mark are the stock's close-to-close change and the same for SPY; they describe the record, not what the next one will do. Not investment advice.