// company-profile

Miami International Holdings, Inc.

MIAX
ExchangeNYSESectorSecurity Brokers, Dealers & Flotation CompaniesInc.DEFilings119Insiders26
// api This Miami International Holdings, Inc. insider-trading data is served live by the Form4API insider trading API. Get the same data via API.

// activity-summary

Recent insider activity is bullish. Over the last 30 days, 49 insiders purchased shares (net $192K). Buying was led by Raymond Mark F..

// 90-day insight

Over the last 90 days, Miami International Holdings, Inc. insiders bought $192K across 49 transactions with no open-market sales.

  • Most active insider: Brown Shelly with 4 transactions totaling $209K.
  • Largest single sale: $209K by Brown Shelly on Jun 15, 2026.
  • 100% of recent sales were pre-scheduled 10b5-1 trades — typically less informative than open-market activity.

Activity skews bullish — buys outpace sales.

Institutional Ownership

Top 13F-HR holders of Miami International Holdings, Inc. as of 2026-03-31

↑ increasing
Total reported AUM
$1.65B
QoQ change
+17.1%
Reporting period
2026-03-31
#1
HORIZON KINETICS ASSET MANAGEMENT LLC
CIK 1056823
$134.3M
3.5M shares
#2
SUSQUEHANNA INTERNATIONAL GROUP, LLP
CIK 1446194
$127.1M
3.3M shares
#3
Alyeska Investment Group, L.P.
CIK 1453072
$56.3M
1.4M shares

Data source: SEC Form 13F-HR filings. Joined with insider activity above — see who's loading up institutionally while insiders are trading. Full 13F-HR API →

Insider Transactions

Sourced from SEC EDGAR Form 4 filings. Updated hourly.

DateInsiderCompanyTypeSharesPriceValue
Jun 16, 2026Lozier Kenneth W.MIAX
Award
2,571$0.00$0K
Jun 16, 2026Comly Barbara J.MIAX
Award
39,140$0.00$0K
Jun 16, 2026Massad Mark I.MIAX
Award
4,970$0.00$0K
Jun 16, 2026Lozier Kenneth W.MIAX
Award
4,970$0.00$0K
Jun 16, 2026Teekell Judson GrayMIAX
Award
4,970$0.00$0K

45 more transactions hidden

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