ActivistsInvestorsTrumpPoliticiansSerenityCitriniSemianalysisTradeArbitrageSearch
By filer · By stock · Search

$MIAX:NYSE · MIAMI INTERNATIONAL HOLDINGS, INC.

Conviction from: Citrini

Miami International Holdings — options exchanges (IPO'd 2025)

Not currently held by tracked 13F filers — this page aggregates activist, insider, politician and research activity.

Beyond 13F — activists, insiders, politicians & research

Activist 13D filings daily digest →

FiledFormActivist% of classConviction
2026-04-28SCHEDULE 13D/AHORIZON KINETICS ASSET MANAGEMENT LLC12.2%Highfiling
2026-04-14SCHEDULE 13D/AHORIZON KINETICS ASSET MANAGEMENT LLC12.1%Highfiling

Insider open-market buys daily digest →

FiledInsiderRoleSharesValue
2026-03-06STAHL MURRAYdirector+10%-owner7,200$312,336Form 4
2026-03-06STAHL MURRAYdirector+10%-owner7,200$310,176Form 4

Congressional trades all politician trades →

1 disclosed trade(s) by 1 filer(s).

Trade dateWhoTypeAmount
2026-03-20Gilbert Cisneros CA31BUY$15,001 - $50,000PTR

Citrini Research coverage report library →

ReportDateStance
#126 — Small Themes: June 20262026-06-24LONG

from2028 — cross-site stock view. Rebuilt at publish time.