MIAX John Smollen bought MIAMI INTERNATIONAL HOLDINGS, INC. shares — SEC Form 4BUYMIAMI INTERNATIONAL HOLDINGS, INC.

John Smollen, EVP Traded Products & Relation at MIAMI INTERNATIONAL HOLDINGS, INC. (MIAX), bought 5,000 shares at $23.00 ($115K) on 2025-08-13, disclosed to the SEC on 2025-08-15.

SEC EDGAR Filing

0001628280-25-040559

View on SEC EDGAR

Why this matters (generating…)

High-signal trade — passes our conviction filters but the AI narrative is still being generated. Check back shortly.

Strong74/100

Clearly above the average filing.

Massive Holdings Increase (>100%)First-Time BuyerOpportunistic Buy

Trade Context

•Increased holdings by 225%
•8 other insiders also purchased in last 30 days

Filing Info

Filed2025-08-15

Traded2025-08-13

Accession0001628280-25-040559

SourceSEC EDGAR (Historical)

Insider

NameJohn Smollen

TitleEVP Traded Products & Relation

PIT GradeInsiderUnrated

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MIAX John Smollen bought MIAMI INTERNATIONAL HOLDINGS, INC. shares — SEC Form 4BUYMIAMI INTERNATIONAL HOLDINGS, INC.

Trade Context

Filing Info

Insider

Trade Details

Outcomes