Filing Flows › Companies › Miami International Holdings › Timeline
Miami International Holdings stock timeline
A year of the price with every insider trade, planned sale, earnings report and material 8-K marked
252 sessions−26.6% to $34.48
Miami International Holdings (MIAX) stock fell 27% over the last 252 sessions, to $34.48. On the way it reported 4 quarters, its insiders filed 4 open-market trades and 16 Form 144 notices of planned sales, and the company filed 4 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 |
|---|---|---|---|---|---|
| Nov 4, 2026 | Form 144 | Form 144: Barbara J. Comly plans to sell $5.1M | +3.2% (+1.6% vs SPY) | — | — |
| Oct 29, 2026 | Earnings | Earnings: beat the EPS estimate by 21.0% | −1.7% (−1.3% vs SPY) | +8.9% (+9.6% vs SPY) | — |
| Oct 2, 2026 | Form 144 | Form 144: Douglas M. Schafer Jr. plans to sell $4.0M | −2.2% (−3.0% vs SPY) | −9.5% (−10.8% vs SPY) | −0.4% (+0.7% vs SPY) |
| Sep 16, 2026 | Form 144 | Form 144: Shelly Brown plans to sell $838K | −3.8% (−3.4% vs SPY) | −7.2% (−9.6% vs SPY) | −28.5% (−30.3% vs SPY) |
| Sep 3, 2026 | Form 144 | Form 144: Gallagher Investments LLC plans to sell $5.7M | +5.0% (+4.0% vs SPY) | +4.6% (+5.6% vs SPY) | −20.8% (−21.6% vs SPY) |
| Aug 19, 2026 | Form 144 | Form 144: Gallagher Investments LLC plans to sell $6.3M | −3.2% (−3.4% vs SPY) | +5.6% (+5.8% vs SPY) | −10.7% (−10.0% vs SPY) |
| Aug 17, 2026 | Form 144 | Form 144: Lance Emmons plans to sell $1.5M | −2.6% (−2.1% vs SPY) | −2.2% (−0.8% vs SPY) | −9.7% (−7.2% vs SPY) |
| Aug 5, 2026 | Earnings | Earnings: beat the EPS estimate by 17.5% | +1.4% (+1.6% vs SPY) | −6.9% (−6.8% vs SPY) | −11.0% (−10.2% vs SPY) |
| Aug 4, 2026 | Form 144 | Form 144: Edward Deitzel plans to sell $2.1M | −3.2% (−5.0% vs SPY) | −7.2% (−9.2% vs SPY) | −10.6% (−11.2% vs SPY) |
| Aug 4, 2026 | Form 144 | Form 144: Barbara J. Comly plans to sell $8.5M | −3.2% (−5.0% vs SPY) | −7.2% (−9.2% vs SPY) | −10.6% (−11.2% vs SPY) |
| Aug 4, 2026 | Form 144 | Form 144: Harish Jayabalan plans to sell $3.0M | −3.2% (−5.0% vs SPY) | −7.2% (−9.2% vs SPY) | −10.6% (−11.2% vs SPY) |
| Aug 4, 2026 | Form 144 | Form 144: J. Gray Teekell plans to sell $281K | −3.2% (−5.0% vs SPY) | −7.2% (−9.2% vs SPY) | −10.6% (−11.2% vs SPY) |
| Aug 4, 2026 | Form 144 | Form 144: Gallagher Investments LLC plans to sell $2.3M | −3.2% (−5.0% vs SPY) | −7.2% (−9.2% vs SPY) | −10.6% (−11.2% vs SPY) |
| Jul 15, 2026 | Form 144 | Form 144: Cynthia Schwarzkopf plans to sell $620K | +2.7% (+2.3% vs SPY) | +1.5% (+2.0% vs SPY) | +5.1% (+2.4% vs SPY) |
| Jul 6, 2026 | Form 144 | Form 144: Shelly Brown plans to sell $653K | +2.5% (+1.6% vs SPY) | +4.8% (+3.4% vs SPY) | +13.7% (+12.0% vs SPY) |
| Jul 6, 2026 | Form 144 | Form 144: Harish Jayabalan plans to sell $817K | +2.5% (+1.6% vs SPY) | +4.8% (+3.4% vs SPY) | +13.7% (+12.0% vs SPY) |
| Jul 2, 2026 | Form 144 | Form 144: Kurt M. Eckert plans to sell $247K | +4.5% (+4.6% vs SPY) | +9.6% (+8.8% vs SPY) | +18.6% (+18.4% vs SPY) |
| Jul 2, 2026 | Form 144 | Form 144: Douglas M. Schafer Jr. plans to sell $5.6M | +4.5% (+4.6% vs SPY) | +9.6% (+8.8% vs SPY) | +18.6% (+18.4% vs SPY) |
| Jun 17, 2026 | 8-K | Directors and officers: departures, appointments, pay | −0.4% (−1.4% vs SPY) | −2.8% (−2.2% vs SPY) | +10.6% (+10.2% vs SPY) |
| May 6, 2026 | Earnings | Earnings: beat the EPS estimate by 14.8% | 0.0% (−1.4% vs SPY) | +9.5% (+7.5% vs SPY) | −18.6% (−23.1% vs SPY) |
| Apr 27, 2026 | 8-K | Directors and officers: departures, appointments, pay | +1.8% (+1.7% vs SPY) | +2.8% (+1.9% vs SPY) | +7.0% (+2.0% vs SPY) |
| Apr 9, 2026 | 8-K | Directors and officers: departures, appointments, pay | +1.4% (+1.5% vs SPY) | +8.1% (+5.0% vs SPY) | +22.9% (+14.8% vs SPY) |
| Mar 26, 2026 | 8-K | Directors and officers: departures, appointments, pay | −2.6% (−0.9% vs SPY) | +4.7% (+3.1% vs SPY) | +19.9% (+9.5% vs SPY) |
| Mar 25, 2026 | Insider sale | Teekell Judson Gray sold $12K | −2.4% (−3.0% vs SPY) | −1.4% (−1.0% vs SPY) | +14.2% (+6.1% vs SPY) |
| Mar 5, 2026 | Insider buy | Stahl Murray bought $310K | −1.0% (−0.5% vs SPY) | −8.1% (−6.8% vs SPY) | −6.4% (−2.3% vs SPY) |
| Mar 4, 2026 | Insider buy | Horizon Kinetics Asset Management LLC bought $312K | +1.8% (+1.1% vs SPY) | −3.6% (−3.2% vs SPY) | −6.6% (−3.1% vs SPY) |
| Mar 2, 2026 | Insider sale | Horizon Kinetics Asset Management LLC sold $5.0M | +0.7% (+0.6% vs SPY) | −3.9% (−1.9% vs SPY) | −12.7% (−4.8% vs SPY) |
| Feb 25, 2026 | Earnings | Earnings: beat the EPS estimate by 27.6% | +3.5% (+2.7% vs SPY) | +6.1% (+7.1% vs SPY) | −2.7% (+1.6% vs SPY) |
Insiders’ record here
In the year on the chart, Miami International Holdings' insiders reported 2 open-market buys ($623K) and 2 sales ($5.0M). Of the 4 old enough to score, 2 were followed by the stock doing what the trade implied over the next 63 sessions (beating SPY after a buy, lagging it after a sale); the median excess return after a buy was −15.9% and after a sale −3.0%.
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 → Miami International Holdings: 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.