MIAXNYSE · Security Brokers, Dealers & Flotation Companies

MIAMI INTERNATIONAL HOLDINGS, INC.

Alert me on MIAX

Insider buys, 6 months

Congress trades, 6 months

Signals, 6 months

Six months

After each filing

Oct 7 Sale Schafer Douglas M. JR Insider

1 week

−1.5%S&P −1.0%

1 month

Result in9 trading days

3 months

Result in51 trading days

6 months

Result in114 trading days

Sep 18 Sale Brown Shelly Insider

1 week

−10.0%S&P +1.3%

1 month

−18.7%S&P +0.6%

3 months

Result in38 trading days

6 months

Result in101 trading days

Sep 5 Sale Deitzel Edward Insider

1 week

−9.1%S&P −1.1%

1 month

−30.6%S&P +1.7%

3 months

Result in30 trading days

6 months

Result in93 trading days

Sep 5 Sale Teekell Judson Gray Insider

1 week

−9.1%S&P −1.1%

1 month

−30.6%S&P +1.7%

3 months

Result in30 trading days

6 months

Result in93 trading days

Sep 5 Sale Schafer Douglas M. JR Insider

1 week

−9.1%S&P −1.1%

1 month

−30.6%S&P +1.7%

3 months

Result in30 trading days

6 months

Result in93 trading days

Show all 72

Sep 5 Sale Comly Barbara J. Insider

1 week

−9.1%S&P −1.1%

1 month

−30.6%S&P +1.7%

3 months

Result in30 trading days

6 months

Result in93 trading days

Sep 5 Sale Gallagher Thomas P. Insider

1 week

−9.1%S&P −1.1%

1 month

−30.6%S&P +1.7%

3 months

Result in30 trading days

6 months

Result in93 trading days

Aug 21 Sale Gallagher Thomas P. Insider

1 week

+1.0%S&P +0.5%

1 month

−13.7%S&P +1.3%

3 months

Result in19 trading days

6 months

Result in82 trading days

Aug 20 Sale Schwarzkopf Cynthia Insider

1 week

+6.6%S&P +1.1%

1 month

−8.4%S&P +1.7%

3 months

Result in18 trading days

6 months

Result in81 trading days

Aug 20 Sale Emmons Lance Insider

1 week

+6.6%S&P +1.1%

1 month

−8.4%S&P +1.7%

3 months

Result in18 trading days

6 months

Result in81 trading days

Aug 7 Sale Schafer Douglas M. JR Insider

1 week

−1.6%S&P +0.4%

1 month

−1.7%S&P −0.9%

3 months

Result in9 trading days

6 months

Result in72 trading days

Aug 7 Sale Teekell Judson Gray Insider

1 week

−1.6%S&P +0.4%

1 month

−1.7%S&P −0.9%

3 months

Result in9 trading days

6 months

Result in72 trading days

Aug 7 Sale Gallagher Thomas P. Insider

1 week

−1.6%S&P +0.4%

1 month

−1.7%S&P −0.9%

3 months

Result in9 trading days

6 months

Result in72 trading days

Aug 7 Sale Eckert Kurt M. Insider

1 week

−1.6%S&P +0.4%

1 month

−1.7%S&P −0.9%

3 months

Result in9 trading days

6 months

Result in72 trading days

Aug 7 Sale Jayabalan Harish Insider

1 week

−1.6%S&P +0.4%

1 month

−1.7%S&P −0.9%

3 months

Result in9 trading days

6 months

Result in72 trading days

Aug 7 Sale Comly Barbara J. Insider

1 week

−1.6%S&P +0.4%

1 month

−1.7%S&P −0.9%

3 months

Result in9 trading days

6 months

Result in72 trading days

Aug 7 Sale Deitzel Edward Insider

1 week

−1.6%S&P +0.4%

1 month

−1.7%S&P −0.9%

3 months

Result in9 trading days

6 months

Result in72 trading days

Jul 17 Sale Schwarzkopf Cynthia Insider

1 week

+1.1%S&P −0.6%

1 month

+0.2%S&P +4.0%

3 months

−27.1%S&P +4.1%

6 months

Result in57 trading days

Jul 15 Sale Comly Barbara J. Insider

1 week

−1.5%S&P −1.0%

1 month

+3.5%S&P +3.1%

3 months

−30.4%S&P +3.3%

6 months

Result in55 trading days

Jul 15 Sale Gallagher Thomas P. Insider

1 week

−1.5%S&P −1.0%

1 month

+3.5%S&P +3.1%

3 months

−30.4%S&P +3.3%

6 months

Result in55 trading days

Jul 8 Sale Teekell Judson Gray Insider

1 week

+1.4%S&P +1.3%

1 month

+8.6%S&P +3.1%

3 months

−26.4%S&P +4.8%

6 months

Result in50 trading days

Jul 8 Sale Eckert Kurt M. Insider

1 week

+1.4%S&P +1.3%

1 month

+8.6%S&P +3.1%

3 months

−26.4%S&P +4.8%

6 months

Result in50 trading days

Jul 8 Sale Comly Barbara J. Insider

1 week

+1.4%S&P +1.3%

1 month

+8.6%S&P +3.1%

3 months

−26.4%S&P +4.8%

6 months

Result in50 trading days

Jul 8 Sale Jayabalan Harish Insider

1 week

+1.4%S&P +1.3%

1 month

+8.6%S&P +3.1%

3 months

−26.4%S&P +4.8%

6 months

Result in50 trading days

Jul 8 Sale Schafer Douglas M. JR Insider

1 week

+1.4%S&P +1.3%

1 month

+8.6%S&P +3.1%

3 months

−26.4%S&P +4.8%

6 months

Result in50 trading days

Jul 8 Sale Gallagher Thomas P. Insider

1 week

+1.4%S&P +1.3%

1 month

+8.6%S&P +3.1%

3 months

−26.4%S&P +4.8%

6 months

Result in50 trading days

Jul 8 Sale Brown Shelly Insider

1 week

+1.4%S&P +1.3%

1 month

+8.6%S&P +3.1%

3 months

−26.4%S&P +4.8%

6 months

Result in50 trading days

Jul 8 Sale Deitzel Edward Insider

1 week

+1.4%S&P +1.3%

1 month

+8.6%S&P +3.1%

3 months

−26.4%S&P +4.8%

6 months

Result in50 trading days

Jun 18 Sale Brown Shelly Insider

1 week

+0.7%S&P −2.4%

1 month

+11.4%S&P +0.2%

3 months

+3.0%S&P +2.3%

6 months

Result in38 trading days

Jun 13 Sale Schwarzkopf Cynthia Insider

1 week

−18.8%S&P −2.6%

1 month

−2.8%S&P −0.3%

3 months

−10.4%S&P +0.6%

6 months

Result in35 trading days

Jun 11 Sale Jayabalan Harish Insider

1 week

−8.8%S&P +1.5%

1 month

+0.1%S&P +2.2%

3 months

+0.5%S&P +3.9%

6 months

Result in33 trading days

Jun 5 Sale Comly Barbara J. Insider

1 week

+10.4%S&P +0.6%

1 month

+6.8%S&P +1.3%

3 months

+8.1%S&P +4.7%

6 months

Result in29 trading days

Jun 5 Sale Eckert Kurt M. Insider

1 week

+10.4%S&P +0.6%

1 month

+6.8%S&P +1.3%

3 months

+8.1%S&P +4.7%

6 months

Result in29 trading days

Jun 5 Sale Brown Shelly Insider

1 week

+10.4%S&P +0.6%

1 month

+6.8%S&P +1.3%

3 months

+8.1%S&P +4.7%

6 months

Result in29 trading days

Jun 5 Sale Schafer Douglas M. JR Insider

1 week

+10.4%S&P +0.6%

1 month

+6.8%S&P +1.3%

3 months

+8.1%S&P +4.7%

6 months

Result in29 trading days

Jun 5 Sale Teekell Judson Gray Insider

1 week

+10.4%S&P +0.6%

1 month

+6.8%S&P +1.3%

3 months

+8.1%S&P +4.7%

6 months

Result in29 trading days

Jun 5 Sale Deitzel Edward Insider

1 week

+10.4%S&P +0.6%

1 month

+6.8%S&P +1.3%

3 months

+8.1%S&P +4.7%

6 months

Result in29 trading days

Jun 5 Sale Gallagher Thomas P. Insider

1 week

+10.4%S&P +0.6%

1 month

+6.8%S&P +1.3%

3 months

+8.1%S&P +4.7%

6 months

Result in29 trading days

May 19 Sale Emmons Lance Insider

1 week

−5.8%S&P +2.3%

1 month

−29.4%S&P +2.0%

3 months

−23.8%S&P +5.1%

6 months

Result in17 trading days

May 8 Sale Gallagher Thomas P. Insider

1 week

+8.0%S&P +0.2%

1 month

−23.4%S&P −0.1%

3 months

−16.2%S&P +5.1%

6 months

Result in10 trading days

May 5 Sale Eckert Kurt M. Insider

1 week

+10.0%S&P +2.0%

1 month

−17.0%S&P +4.6%

3 months

−3.7%S&P +6.6%

6 months

Result in7 trading days

May 5 Sale Schafer Douglas M. JR Insider

1 week

+10.0%S&P +2.0%

1 month

−17.0%S&P +4.6%

3 months

−3.7%S&P +6.6%

6 months

Result in7 trading days

May 5 Sale Deitzel Edward Insider

1 week

+10.0%S&P +2.0%

1 month

−17.0%S&P +4.6%

3 months

−3.7%S&P +6.6%

6 months

Result in7 trading days

May 5 Sale Gallagher Thomas P. Insider

1 week

+10.0%S&P +2.0%

1 month

−17.0%S&P +4.6%

3 months

−3.7%S&P +6.6%

6 months

Result in7 trading days

May 5 Sale Teekell Judson Gray Insider

1 week

+10.0%S&P +2.0%

1 month

−17.0%S&P +4.6%

3 months

−3.7%S&P +6.6%

6 months

Result in7 trading days

May 5 Sale Comly Barbara J. Insider

1 week

+10.0%S&P +2.0%

1 month

−17.0%S&P +4.6%

3 months

−3.7%S&P +6.6%

6 months

Result in7 trading days

May 5 Sale Brown Shelly Insider

1 week

+10.0%S&P +2.0%

1 month

−17.0%S&P +4.6%

3 months

−3.7%S&P +6.6%

6 months

Result in7 trading days

Apr 18 Sale Gallagher Thomas P. Insider

1 week

+4.0%S&P +0.9%

1 month

+18.7%S&P +3.5%

3 months

−6.7%S&P +5.9%

6 months

−29.8%S&P +8.7%

Apr 18 Sale Comly Barbara J. Insider

1 week

+4.0%S&P +0.9%

1 month

+18.7%S&P +3.5%

3 months

−6.7%S&P +5.9%

6 months

−29.8%S&P +8.7%

Apr 10 Sale Deitzel Edward Insider

1 week

+7.7%S&P +4.5%

1 month

+24.4%S&P +8.8%

3 months

+0.9%S&P +10.5%

6 months

−26.8%S&P +15.2%

Apr 10 Sale Brown Shelly Insider

1 week

+7.7%S&P +4.5%

1 month

+24.4%S&P +8.8%

3 months

+0.9%S&P +10.5%

6 months

−26.8%S&P +15.2%

Apr 9 Sale Brown Shelly Insider

1 week

+8.5%S&P +3.2%

1 month

+25.7%S&P +8.5%

3 months

+3.6%S&P +11.3%

6 months

−25.8%S&P +14.4%

Apr 7 Buy Rep. Gilbert Cisneros House

1 week

+4.7%S&P +3.5%

1 month

+17.9%S&P +8.2%

3 months

+1.8%S&P +11.5%

6 months

−28.5%S&P +15.6%

Apr 3 Sale Teekell Judson Gray Insider

1 week

+3.0%S&P +4.1%

1 month

+14.6%S&P +9.8%

3 months

+5.0%S&P +13.8%

6 months

−17.6%S&P +18.2%

Mar 27 Sale Teekell Judson Gray Insider

1 week

+11.6%S&P +3.9%

1 month

+26.8%S&P +12.2%

3 months

−1.3%S&P +17.2%

6 months

−9.1%S&P +21.3%

Mar 25 Sale Brown Shelly Insider

1 week

+2.2%S&P −0.2%

1 month

+19.1%S&P +8.7%

3 months

−4.6%S&P +12.1%

6 months

−7.5%S&P +17.4%

Mar 21 Sale Eckert Kurt M. Insider

1 week

−4.0%S&P −3.6%

1 month

+15.8%S&P +8.5%

3 months

−8.4%S&P +12.2%

6 months

−5.9%S&P +18.6%

Mar 19 Sale Schafer Douglas M. JR Insider

1 week

−1.8%S&P −2.0%

1 month

+15.1%S&P +7.7%

3 months

−3.5%S&P +13.8%

6 months

−0.6%S&P +16.3%

Mar 7 Buy STAHL MURRAY Insider

1 week

−4.1%S&P −1.4%

1 month

+2.5%S&P −0.1%

3 months

−5.9%S&P +9.3%

6 months

+5.5%S&P +13.5%

Mar 7 Buy HORIZON KINETICS ASSET MANAGEMENT LLC Insider

1 week

−4.1%S&P −1.4%

1 month

+2.5%S&P −0.1%

3 months

−5.9%S&P +9.3%

6 months

+5.5%S&P +13.5%

Mar 7 Buy STAHL MURRAY Insider

1 week

−4.1%S&P −1.4%

1 month

+2.5%S&P −0.1%

3 months

−5.9%S&P +9.3%

6 months

+5.5%S&P +13.5%

Mar 7 Buy HORIZON KINETICS ASSET MANAGEMENT LLC Insider

1 week

−4.1%S&P −1.4%

1 month

+2.5%S&P −0.1%

3 months

−5.9%S&P +9.3%

6 months

+5.5%S&P +13.5%

Mar 5 Sale STAHL MURRAY Insider

1 week

−10.1%S&P −2.2%

1 month

−1.8%S&P −3.0%

3 months

−6.5%S&P +11.4%

6 months

+0.8%S&P +14.1%

Mar 5 Sale HORIZON KINETICS ASSET MANAGEMENT LLC Insider

1 week

−10.1%S&P −2.2%

1 month

−1.8%S&P −3.0%

3 months

−6.5%S&P +11.4%

6 months

+0.8%S&P +14.1%

Dec 16, 2025 Buy STAHL MURRAY Insider

1 week

+9.3%S&P +1.6%

1 month

+0.4%S&P +2.2%

3 months

−10.0%S&P −2.5%

6 months

−13.2%S&P +10.9%

Dec 16, 2025 Buy HORIZON KINETICS ASSET MANAGEMENT LLC Insider

1 week

+9.3%S&P +1.6%

1 month

+0.4%S&P +2.2%

3 months

−10.0%S&P −2.5%

6 months

−13.2%S&P +10.9%

Oct 7, 2025 Buy STAHL MURRAY Insider

1 week

−1.9%S&P −1.0%

1 month

+3.2%S&P +1.3%

3 months

−4.5%S&P +3.4%

6 months

−6.9%S&P +2.2%

Oct 7, 2025 Buy HORIZON KINETICS ASSET MANAGEMENT LLC Insider

1 week

−1.9%S&P −1.0%

1 month

+3.2%S&P +1.3%

3 months

−4.5%S&P +3.4%

6 months

−6.9%S&P +2.2%

Sep 30, 2025 Buy STAHL MURRAY Insider

1 week

+10.3%S&P +0.4%

1 month

+7.2%S&P +3.2%

3 months

+13.5%S&P +3.4%

6 months

−2.2%S&P −1.1%

Sep 30, 2025 Buy HORIZON KINETICS ASSET MANAGEMENT LLC Insider

1 week

+10.3%S&P +0.4%

1 month

+7.2%S&P +3.2%

3 months

+13.5%S&P +3.4%

6 months

−2.2%S&P −1.1%

Sep 30, 2025 Buy STAHL MURRAY Insider

1 week

+10.3%S&P +0.4%

1 month

+7.2%S&P +3.2%

3 months

+13.5%S&P +3.4%

6 months

−2.2%S&P −1.1%

Sep 30, 2025 Buy HORIZON KINETICS ASSET MANAGEMENT LLC Insider

1 week

+10.3%S&P +0.4%

1 month

+7.2%S&P +3.2%

3 months

+13.5%S&P +3.4%

6 months

−2.2%S&P −1.1%

Every purchase and sale on this ticker reported by a member of Congress or an insider, measured from the close of the first trading day after it became public to the close 1 week, 1 month, 3 months and 6 months later, each beside the S&P over the same days.

Filings for MIAX

160 held · newest 5160 held · newest 2

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See all 160 filings for MIAX

Aeon news and offers by email

New sources, new features and offers like our founding price. A few times a month at most. Stop any time.

Signal history

No signal for this ticker yet. A signal is written when insider buying here scores one dot or more.

Stakes

Jun 30, 2026 Schedule 13G

T. Rowe Price Investment Management, Inc.: 5.3%, 5,032,970 shares

Jun 30, 2026 Schedule 13G

BlackRock, Inc.: 5.1%, 4,949,990 shares

May 19, 2026 Schedule 13D, amended

HORIZON KINETICS ASSET MANAGEMENT LLC: 7.8%, 7,400,316 shares

Apr 24, 2026 Schedule 13D, amended

HORIZON KINETICS ASSET MANAGEMENT LLC: 12.2%, 11,162,809 shares

Apr 7, 2026 Schedule 13D, amended

HORIZON KINETICS ASSET MANAGEMENT LLC: 12.1%, 11,061,399 shares

Nov 24, 2025 Schedule 13D, amended

HORIZON KINETICS ASSET MANAGEMENT LLC: 11.7%, 9,499,995 shares

Schedule 13D is filed within 5 business days of crossing 5 percent by an investor who may seek to influence the company. Schedule 13G is filed by a passive holder, and a large institution has up to 45 days after the quarter end.

Government contracts, last 12 months

Awards of $10M and up, from USAspending · context, not a signal

No contracts of $10M or more in the last 12 months.

Lobbying

Last four quarters

No lobbying reports on file.