Real time insider trading transaction history:
- Insiders are prohibited from making short-swing profits by trading their shares within 6 months of the registration or acquiring the shares.
- Shares are not adjusted for stock split.
"Insiders might sell their shares for any number of reasons, but they buy them for only one: they think the price will rise"
- Peter Lynch
What is insider trading>>
- Peter Lynch
What is insider trading>>
Common stock purchase or sale:
| Transaction Date | Reported DateTime | Company | Symbol | Insider Relationship | Shares Traded | Average Price | Total Amount | Shares Owned | Filing |
| 2026-08-04 Sale | 2026-08-06 4:06 pm | MIAMI INTERNATIONAL HOLDINGS INC. | MIAX | Schafer Douglas M. JR EVP and CIO | 48,000 | $45.71 | $2,194,080 | 430,748 (Direct) | View |
| 2026-07-02 Sale | 2026-07-07 4:06 pm | MIAMI INTERNATIONAL HOLDINGS INC. | MIAX | Schafer Douglas M. JR EVP and CIO | 48,000 | $41.22 | $1,978,560 | 478,748 (Direct) | View |
| 2026-06-02 Sale | 2026-06-04 4:40 pm | MIAMI INTERNATIONAL HOLDINGS INC. | MIAX | Schafer Douglas M. JR EVP and CIO | 48,000 | $42.84 | $2,056,320 | 402,681 (Direct) | View |
| 2026-05-04 Sale | 2026-05-05 07:32 am | MIAMI INTERNATIONAL HOLDINGS INC. | MIAX | Schafer Douglas M. JR EVP and CIO | 48,000 | $47.25 | $2,268,000 | 450,681 (Direct) | View |
| 2026-03-17 Sale | 2026-03-18 4:23 pm | MIAMI INTERNATIONAL HOLDINGS INC. | MIAX | Schafer Douglas M. JR EVP and CIO | 48,000 | $39.74 | $1,907,520 | 498,681 (Direct) | View |
Stock options: Exercise, Award, Grant, Conversion
| Transaction Date | Reported DateTime | Exercisable Expiration | Company | Symnbol | Insider Relationship | Shares Traded | Conversion Price | Shares Owned | Filing |
| 2026-08-04 Exercise | 2026-08-06 4:06 pm | N/A 2028-05-17 | MIAMI INTERNATIONAL HOLDINGS INC. | MIAX | Schafer Douglas M. JR EVP and CIO | 48,000 | $0 | 430,748 (Direct) | View |
| 2026-08-04 Exercise | 2026-08-06 4:06 pm | N/A N/A | MIAMI INTERNATIONAL HOLDINGS INC. | MIAX | Schafer Douglas M. JR EVP and CIO | 48,000 | $12 | 430,748 (Direct) | View |
| 2026-07-02 Exercise | 2026-07-07 4:06 pm | N/A 2026-08-02 | MIAMI INTERNATIONAL HOLDINGS INC. | MIAX | Schafer Douglas M. JR EVP and CIO | 48,000 | $0 | 478,748 (Direct) | View |
| 2026-07-02 Exercise | 2026-07-07 4:06 pm | N/A N/A | MIAMI INTERNATIONAL HOLDINGS INC. | MIAX | Schafer Douglas M. JR EVP and CIO | 48,000 | $12 | 478,748 (Direct) | View |
| 2026-06-16 Option Award | 2026-06-18 4:24 pm | N/A 2036-06-15 | MIAMI INTERNATIONAL HOLDINGS INC. | MIAX | Schafer Douglas M. JR EVP and CIO | 47,264 | $0 | 411,380 (Direct) | View |
| 2026-06-11 Tax Withholding | 2026-06-12 4:16 pm | N/A N/A | MIAMI INTERNATIONAL HOLDINGS INC. | MIAX | Schafer Douglas M. JR EVP and CIO | 32,565 | $40.79 | 364,116 (Direct) | View |
| 2026-06-02 Exercise | 2026-06-04 4:40 pm | N/A 2026-08-02 | MIAMI INTERNATIONAL HOLDINGS INC. | MIAX | Schafer Douglas M. JR EVP and CIO | 48,000 | $0 | 402,681 (Direct) | View |
| 2026-06-02 Exercise | 2026-06-04 4:40 pm | N/A N/A | MIAMI INTERNATIONAL HOLDINGS INC. | MIAX | Schafer Douglas M. JR EVP and CIO | 48,000 | $12 | 402,681 (Direct) | View |
| 2026-05-04 Exercise | 2026-05-05 07:32 am | N/A 2026-08-02 | MIAMI INTERNATIONAL HOLDINGS INC. | MIAX | Schafer Douglas M. JR EVP and CIO | 48,000 | $0 | 450,681 (Direct) | View |
| 2026-05-04 Exercise | 2026-05-05 07:32 am | N/A N/A | MIAMI INTERNATIONAL HOLDINGS INC. | MIAX | Schafer Douglas M. JR EVP and CIO | 48,000 | $12 | 450,681 (Direct) | View |
| 2026-03-17 Exercise | 2026-03-18 4:23 pm | N/A 2026-08-02 | MIAMI INTERNATIONAL HOLDINGS INC. | MIAX | Schafer Douglas M. JR EVP and CIO | 48,000 | $0 | 498,681 (Direct) | View |
| 2026-03-17 Exercise | 2026-03-18 4:23 pm | N/A N/A | MIAMI INTERNATIONAL HOLDINGS INC. | MIAX | Schafer Douglas M. JR EVP and CIO | 48,000 | $12 | 498,681 (Direct) | View |
| 2026-02-18 Tax Withholding | 2026-02-20 4:33 pm | N/A N/A | MIAMI INTERNATIONAL HOLDINGS INC. | MIAX | Schafer Douglas M. JR EVP and CIO | 32,565 | $40.89 | 396,681 (Direct) | View |
| 2026-02-10 Tax Withholding | 2026-02-12 4:40 pm | N/A N/A | MIAMI INTERNATIONAL HOLDINGS INC. | MIAX | Schafer Douglas M. JR EVP and CIO | 108,550 | $41.33 | 429,246 (Direct) | View |
| 2025-08-15 Conversion | 2025-08-19 4:07 pm | N/A N/A | MIAMI INTERNATIONAL HOLDINGS INC. | MIAX | Schafer Douglas M. JR EVP and CIO | 387,796 | $0 | 1,337,796 (Direct) | View |
| 2025-08-15 Exercise | 2025-08-19 4:07 pm | N/A 2028-05-17 | MIAMI INTERNATIONAL HOLDINGS INC. | MIAX | Schafer Douglas M. JR EVP and CIO | 1,600,000 | $0 | 1,337,796 (Direct) | View |
| 2025-08-13 Tax Withholding | 2025-08-15 4:49 pm | N/A N/A | MIAMI INTERNATIONAL HOLDINGS INC. | MIAX | Schafer Douglas M. JR EVP and CIO | 21,710 | $23 | 387,296 (Direct) | View |
Ownership | 2025-08-13 5:07 pm | N/A N/A | MIAMI INTERNATIONAL HOLDINGS INC. | MIAX | Schafer Douglas M. JR EVP and CIO | 0 | $0 | 1,650,587 (Direct) | View |