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Form 4 reporting owner · CIK 0001056823

HORIZON KINETICS ASSET MANAGEMENT LLC · STAHL MURRAY

10% owner

6,199Open-market trades
3Tickers
+8.74%Avg 90d after buys
−7.48%Avg 90d after sales
+12.1%Avg 180d after buys
+0.05%Avg 180d after sales

MIAX price and prints

MIAMI INTERNATIONAL HOLDINGS, INC. 9 open-market prints by this insider, 8/28/20253/5/2026. Triangles mark only their Form 4 purchases and sales. Full MIAX chart

MIAX adjusted close▲ buy▼ sale
30.7437.2643.7950.3256.842026-03-05 buy HORIZON KINETICS ASSET MANAGEMENT LLC · STAHL MURRAY2026-03-04 buy HORIZON KINETICS ASSET MANAGEMENT LLC · STAHL MURRAY2026-03-02 sell HORIZON KINETICS ASSET MANAGEMENT LLC · STAHL MURRAY2025-12-12 buy HORIZON KINETICS ASSET MANAGEMENT LLC · STAHL MURRAY2025-10-03 buy HORIZON KINETICS ASSET MANAGEMENT LLC · STAHL MURRAY2025-09-26 buy HORIZON KINETICS ASSET MANAGEMENT LLC · STAHL MURRAY2025-08-28 buy HORIZON KINETICS ASSET MANAGEMENT LLC · STAHL MURRAY2025-08-142026-09-18

MIAX trades

Clear
DateForm 4TickerSideSharesValue90d180d
3/5/2026
MIAXMIAMI INTERNATIONAL HOLDINGS, INC
MIAMI INTERNATIONAL HOLDINGS, INC · Security Brokers, Dealers & Flotation CompaniesIndustrySecurity Brokers, Dealers & Flotation CompaniesMkt cap (est.)$13.46BPrice$38.7952w high$56.8452w low$35.81
BUY7,200$310.2K−4.84%−0.64%
3/4/2026
MIAXMIAMI INTERNATIONAL HOLDINGS, INC
MIAMI INTERNATIONAL HOLDINGS, INC · Security Brokers, Dealers & Flotation CompaniesIndustrySecurity Brokers, Dealers & Flotation CompaniesMkt cap (est.)$13.46BPrice$38.7952w high$56.8452w low$35.81
BUY7,200$312.3K−0.72%+0.12%
3/4/2026
MIAXMIAMI INTERNATIONAL HOLDINGS, INC
MIAMI INTERNATIONAL HOLDINGS, INC · Security Brokers, Dealers & Flotation CompaniesIndustrySecurity Brokers, Dealers & Flotation CompaniesMkt cap (est.)$13.46BPrice$38.7952w high$56.8452w low$35.81
BUY7,200$312.3K−0.72%+0.12%
3/2/2026
MIAXMIAMI INTERNATIONAL HOLDINGS, INC
MIAMI INTERNATIONAL HOLDINGS, INC · Security Brokers, Dealers & Flotation CompaniesIndustrySecurity Brokers, Dealers & Flotation CompaniesMkt cap (est.)$13.46BPrice$38.7952w high$56.8452w low$35.81
SELL121,054$4.95M−7.48%+0.05%
3/2/2026
MIAXMIAMI INTERNATIONAL HOLDINGS, INC
MIAMI INTERNATIONAL HOLDINGS, INC · Security Brokers, Dealers & Flotation CompaniesIndustrySecurity Brokers, Dealers & Flotation CompaniesMkt cap (est.)$13.46BPrice$38.7952w high$56.8452w low$35.81
SELL53,578$2.19M−7.48%+0.05%
12/12/2025
MIAXMIAMI INTERNATIONAL HOLDINGS, INC
MIAMI INTERNATIONAL HOLDINGS, INC · Security Brokers, Dealers & Flotation CompaniesIndustrySecurity Brokers, Dealers & Flotation CompaniesMkt cap (est.)$13.46BPrice$38.7952w high$56.8452w low$35.81
BUY2,439$100.0K−10.8%−4.43%
10/3/2025
MIAXMIAMI INTERNATIONAL HOLDINGS, INC
MIAMI INTERNATIONAL HOLDINGS, INC · Security Brokers, Dealers & Flotation CompaniesIndustrySecurity Brokers, Dealers & Flotation CompaniesMkt cap (est.)$13.46BPrice$38.7952w high$56.8452w low$35.81
BUY2$83.94+3.71%−6.46%
9/26/2025
MIAXMIAMI INTERNATIONAL HOLDINGS, INC
MIAMI INTERNATIONAL HOLDINGS, INC · Security Brokers, Dealers & Flotation CompaniesIndustrySecurity Brokers, Dealers & Flotation CompaniesMkt cap (est.)$13.46BPrice$38.7952w high$56.8452w low$35.81
BUY4$167.04+13.2%−6.60%
8/28/2025
MIAXMIAMI INTERNATIONAL HOLDINGS, INC
MIAMI INTERNATIONAL HOLDINGS, INC · Security Brokers, Dealers & Flotation CompaniesIndustrySecurity Brokers, Dealers & Flotation CompaniesMkt cap (est.)$13.46BPrice$38.7952w high$56.8452w low$35.81
BUY34,470$1.24M+29.2%+11.5%

Chart uses split-adjusted closes from the first print through the latest available bar. Returns use the last close on or before the trade date and the first close on or after 90 and 180 calendar days. Sales are signed so a declining price is a positive result for the seller. Not investment advice.