MIAX
Miami International Holdings, Inc. $34.47+0.84 (+2.50%)Prev Close$33.63·MCap$3.34B·P/E19.33·Vol89.6K·Yield—
▲
Buys (12M)
2
$410.2K
▼
Sells (12M)
63
$79.63M
◆
Net Activity
Net Seller
$79.22M
●
Active Insiders
12
last 12 mo
Over the past 12 months, insider activity at Miami International Holdings, Inc. (MIAX) has been dominated by selling, with 2 insider purchases totaling $410.2K and 63 insider sales totaling $79.63M. The most recent insider transaction was by Schafer Douglas M. JR (officer: EVP and CIO), who sold $280.5K worth of shares on Oct 26, 2026. Miami International Holdings, Inc. operates in the Financial Services sector, within the Financial - Capital Markets industry, with a market cap of $3.34B.
MIAX Insider Trading Activity
| Date | Insider | Role | Type | Shares | Avg Price | Value | Shares After |
|---|---|---|---|---|---|---|---|
| Oct 26, 2026 | Schafer Douglas M. JR | officer: EVP and CIO | Sell | 8,000 | $35.06 | $280.5K | 387,414 |
| Oct 26, 2026 | Comly Barbara J. | officer: EVP, GC & Corporate Secretary | Sell | 12,306 | $35.04 | $431.2K | 839,564 |
| Oct 6, 2026 | Schafer Douglas M. JR | officer: EVP and CIO | Sell | 40,000 | $33.34 | $1.33M | 387,414 |
| Sep 17, 2026 | Brown Shelly | officer: EVP, Chief Strategy Officer | Sell | 21,217 | $38.61 | $819.2K | 316,490 |
| Sep 4, 2026 | Deitzel Edward | officer: EVP, CRO, CCO MIAX Exchanges | Sell | 11,000 | $42.21 | $464.3K | 119,601 |
| Sep 4, 2026 | Teekell Judson Gray | director | Sell | 8,545 | $41.34 | $353.2K | 81,000 |
| Sep 4, 2026 | Comly Barbara J. | officer: EVP, GC & Corporate Secretary | Sell | 44,445 | $40.49 | $1.80M | 839,564 |
| Sep 4, 2026 | Schafer Douglas M. JR | officer: EVP and CIO | Sell | 48,000 | $40.48 | $1.94M | 387,414 |
| Sep 4, 2026 | Gallagher Thomas P. | director, officer: Chairman & CEO | Sell | 47,000 | $42.43 | $1.99M | 1,423,275 |
| Aug 20, 2026 | Gallagher Thomas P. | director, officer: Chairman & CEO | Sell | 149,700 | $41.13 | $6.16M | 1,423,275 |
| Aug 19, 2026 | Emmons Lance | officer: EVP and CFO | Sell | 35,000 | $42.83 | $1.50M | 86,538-29% |
| Aug 19, 2026 | Schwarzkopf Cynthia | director | Sell | 5,000 | $42.85 | $214.3K | 88,545 |
| Aug 6, 2026 | Teekell Judson Gray | director | Sell | 3,000 | $45.79 | $137.4K | 72,251 |
| Aug 6, 2026 | Schafer Douglas M. JR | officer: EVP and CIO | Sell | 48,000 | $45.71 | $2.19M | 387,414 |
| Aug 6, 2026 | Eckert Kurt M. | director | Sell | 1,063 | $45.80 | $48.7K | 149,612 |
| Aug 6, 2026 | Gallagher Thomas P. | director, officer: Chairman & CEO | Sell | 48,334 | $45.69 | $2.21M | 1,723,275 |
| Aug 6, 2026 | Comly Barbara J. | officer: EVP, GC & Corporate Secretary | Sell | 44,445 | $45.69 | $2.03M | 882,984 |
| Aug 6, 2026 | Deitzel Edward | officer: EVP, CRO, CCO MIAX Exchanges | Sell | 11,000 | $45.78 | $503.6K | 119,601 |
| Aug 6, 2026 | Jayabalan Harish | officer: EVP, CISO and CRO | Sell | 20,000 | $45.90 | $918.0K | 78,065 |
| Jul 16, 2026 | Schwarzkopf Cynthia | director | Sell | 5,000 | $42.00 | $210.0K | 88,545 |
| Jul 14, 2026 | Gallagher Thomas P. | director, officer: Chairman & CEO | Sell | 70,000 | $42.52 | $2.98M | 1,723,275 |
| Jul 14, 2026 | Comly Barbara J. | officer: EVP, GC & Corporate Secretary | Sell | 28,000 | $41.98 | $1.18M | 882,984 |
| Jul 7, 2026 | Comly Barbara J. | officer: EVP, GC & Corporate Secretary | Sell | 28,000 | $41.22 | $1.15M | 882,984 |
| Jul 7, 2026 | Schafer Douglas M. JR | officer: EVP and CIO | Sell | 48,000 | $41.22 | $1.98M | 387,414 |
| Jul 7, 2026 | Brown Shelly | officer: EVP, Chief Strategy Officer | Sell | 16,000 | $42.13 | $674.1K | 353,990 |
| Jul 7, 2026 | Gallagher Thomas P. | director, officer: Chairman & CEO | Sell | 70,000 | $42.16 | $2.95M | 1,723,275 |
| Jul 7, 2026 | Deitzel Edward | officer: EVP, CRO, CCO MIAX Exchanges | Sell | 11,000 | $42.04 | $462.4K | 119,601 |
| Jul 7, 2026 | Jayabalan Harish | officer: EVP, CISO and CRO | Sell | 20,000 | $42.12 | $842.4K | 78,065 |
| Jul 7, 2026 | Eckert Kurt M. | director | Sell | 5,250 | $39.35 | $206.6K | 149,612 |
| Jul 7, 2026 | Teekell Judson Gray | director | Sell | 3,000 | $40.00 | $120.0K | 75,251 |
| Jun 17, 2026 | Brown Shelly | officer: EVP, Chief Strategy Officer | Sell | 4,714 | $44.23 | $208.5K | 316,714 |
| Jun 12, 2026 | Schwarzkopf Cynthia | director | Sell | 19,500 | $41.73 | $813.7K | 81,308 |
| Jun 10, 2026 | Jayabalan Harish | officer: EVP, CISO and CRO | Sell | 20,000 | $40.08 | $801.6K | 73,405 |
| Jun 4, 2026 | Eckert Kurt M. | director | Sell | 5,250 | $42.76 | $224.5K | 142,375 |
| Jun 4, 2026 | Deitzel Edward | officer: EVP, CRO, CCO MIAX Exchanges | Sell | 11,000 | $42.16 | $463.8K | 116,221 |
| Jun 4, 2026 | Brown Shelly | officer: EVP, Chief Strategy Officer | Sell | 16,000 | $42.12 | $673.9K | 325,047 |
| Jun 4, 2026 | Comly Barbara J. | officer: EVP, GC & Corporate Secretary | Sell | 28,000 | $42.85 | $1.20M | 843,844 |
| Jun 4, 2026 | Gallagher Thomas P. | director, officer: Chairman & CEO | Sell | 70,000 | $42.36 | $2.97M | 1,723,275 |
| Jun 4, 2026 | Teekell Judson Gray | director | Sell | 3,000 | $42.78 | $128.3K | 71,014 |
| Jun 4, 2026 | Schafer Douglas M. JR | officer: EVP and CIO | Sell | 48,000 | $42.84 | $2.06M | 396,681 |
| May 18, 2026 | Emmons Lance | officer: EVP and CFO | Sell | 35,000 | $56.36 | $1.97M | 84,262-29% |
| May 7, 2026 | Gallagher Thomas P. | director, officer: Chairman & CEO | Sell | 15,771 | $47.92 | $755.7K | 1,723,275 |
| May 5, 2026 | Brown Shelly | officer: EVP, Chief Strategy Officer | Sell | 16,000 | $47.28 | $756.5K | 325,047 |
| May 5, 2026 | Teekell Judson Gray | director | Sell | 3,000 | $47.30 | $141.9K | 56,338 |
| May 5, 2026 | Comly Barbara J. | officer: EVP, GC & Corporate Secretary | Sell | 28,000 | $47.26 | $1.32M | 843,844 |
| May 5, 2026 | Schafer Douglas M. JR | officer: EVP and CIO | Sell | 48,000 | $47.25 | $2.27M | 396,681 |
| May 5, 2026 | Eckert Kurt M. | director | Sell | 5,625 | $47.29 | $266.0K | 142,375 |
| May 5, 2026 | Gallagher Thomas P. | director, officer: Chairman & CEO | Sell | 54,229 | $47.26 | $2.56M | 1,723,275 |
| May 5, 2026 | Deitzel Edward | officer: EVP, CRO, CCO MIAX Exchanges | Sell | 11,000 | $47.28 | $520.1K | 116,221 |
| Apr 17, 2026 | Gallagher Thomas P. | director, officer: Chairman & CEO | Sell | 224,025 | $43.43 | $9.73M | 1,827,399 |
Showing 1–50 of 76
1 / 2
MIAX Insider Buying Activity
The following table shows recent insider purchases of Miami International Holdings, Inc. (MIAX) stock reported via SEC Form 4 filings.
No insider buying activity found for MIAX in the last 12 months.
MIAX Insider Selling Activity
The following table shows recent insider sales of Miami International Holdings, Inc. (MIAX) stock reported via SEC Form 4 filings.
| Date | Insider | Role | Type | Shares | Avg Price | Value | Shares After |
|---|---|---|---|---|---|---|---|
| Oct 26, 2026 | Schafer Douglas M. JR | officer: EVP and CIO | Sell | 8,000 | $35.06 | $280.5K | 387,414 |
| Oct 26, 2026 | Comly Barbara J. | officer: EVP, GC & Corporate Secretary | Sell | 12,306 | $35.04 | $431.2K | 839,564 |
| Oct 6, 2026 | Schafer Douglas M. JR | officer: EVP and CIO | Sell | 40,000 | $33.34 | $1.33M | 387,414 |
| Sep 17, 2026 | Brown Shelly | officer: EVP, Chief Strategy Officer | Sell | 21,217 | $38.61 | $819.2K | 316,490 |
| Sep 4, 2026 | Deitzel Edward | officer: EVP, CRO, CCO MIAX Exchanges | Sell | 11,000 | $42.21 | $464.3K | 119,601 |
| Sep 4, 2026 | Teekell Judson Gray | director | Sell | 8,545 | $41.34 | $353.2K | 81,000 |
| Sep 4, 2026 | Comly Barbara J. | officer: EVP, GC & Corporate Secretary | Sell | 44,445 | $40.49 | $1.80M | 839,564 |
| Sep 4, 2026 | Schafer Douglas M. JR | officer: EVP and CIO | Sell | 48,000 | $40.48 | $1.94M | 387,414 |
| Sep 4, 2026 | Gallagher Thomas P. | director, officer: Chairman & CEO | Sell | 47,000 | $42.43 | $1.99M | 1,423,275 |
| Aug 20, 2026 | Gallagher Thomas P. | director, officer: Chairman & CEO | Sell | 149,700 | $41.13 | $6.16M | 1,423,275 |
| Aug 19, 2026 | Emmons Lance | officer: EVP and CFO | Sell | 35,000 | $42.83 | $1.50M | 86,538-29% |
| Aug 19, 2026 | Schwarzkopf Cynthia | director | Sell | 5,000 | $42.85 | $214.3K | 88,545 |
| Aug 6, 2026 | Teekell Judson Gray | director | Sell | 3,000 | $45.79 | $137.4K | 72,251 |
| Aug 6, 2026 | Schafer Douglas M. JR | officer: EVP and CIO | Sell | 48,000 | $45.71 | $2.19M | 387,414 |
| Aug 6, 2026 | Eckert Kurt M. | director | Sell | 1,063 | $45.80 | $48.7K | 149,612 |
| Aug 6, 2026 | Gallagher Thomas P. | director, officer: Chairman & CEO | Sell | 48,334 | $45.69 | $2.21M | 1,723,275 |
| Aug 6, 2026 | Comly Barbara J. | officer: EVP, GC & Corporate Secretary | Sell | 44,445 | $45.69 | $2.03M | 882,984 |
| Aug 6, 2026 | Deitzel Edward | officer: EVP, CRO, CCO MIAX Exchanges | Sell | 11,000 | $45.78 | $503.6K | 119,601 |
| Aug 6, 2026 | Jayabalan Harish | officer: EVP, CISO and CRO | Sell | 20,000 | $45.90 | $918.0K | 78,065 |
| Jul 16, 2026 | Schwarzkopf Cynthia | director | Sell | 5,000 | $42.00 | $210.0K | 88,545 |
| Jul 14, 2026 | Gallagher Thomas P. | director, officer: Chairman & CEO | Sell | 70,000 | $42.52 | $2.98M | 1,723,275 |
| Jul 14, 2026 | Comly Barbara J. | officer: EVP, GC & Corporate Secretary | Sell | 28,000 | $41.98 | $1.18M | 882,984 |
| Jul 7, 2026 | Comly Barbara J. | officer: EVP, GC & Corporate Secretary | Sell | 28,000 | $41.22 | $1.15M | 882,984 |
| Jul 7, 2026 | Schafer Douglas M. JR | officer: EVP and CIO | Sell | 48,000 | $41.22 | $1.98M | 387,414 |
| Jul 7, 2026 | Brown Shelly | officer: EVP, Chief Strategy Officer | Sell | 16,000 | $42.13 | $674.1K | 353,990 |
| Jul 7, 2026 | Gallagher Thomas P. | director, officer: Chairman & CEO | Sell | 70,000 | $42.16 | $2.95M | 1,723,275 |
| Jul 7, 2026 | Deitzel Edward | officer: EVP, CRO, CCO MIAX Exchanges | Sell | 11,000 | $42.04 | $462.4K | 119,601 |
| Jul 7, 2026 | Jayabalan Harish | officer: EVP, CISO and CRO | Sell | 20,000 | $42.12 | $842.4K | 78,065 |
| Jul 7, 2026 | Eckert Kurt M. | director | Sell | 5,250 | $39.35 | $206.6K | 149,612 |
| Jul 7, 2026 | Teekell Judson Gray | director | Sell | 3,000 | $40.00 | $120.0K | 75,251 |
| Jun 17, 2026 | Brown Shelly | officer: EVP, Chief Strategy Officer | Sell | 4,714 | $44.23 | $208.5K | 316,714 |
| Jun 12, 2026 | Schwarzkopf Cynthia | director | Sell | 19,500 | $41.73 | $813.7K | 81,308 |
| Jun 10, 2026 | Jayabalan Harish | officer: EVP, CISO and CRO | Sell | 20,000 | $40.08 | $801.6K | 73,405 |
| Jun 4, 2026 | Eckert Kurt M. | director | Sell | 5,250 | $42.76 | $224.5K | 142,375 |
| Jun 4, 2026 | Deitzel Edward | officer: EVP, CRO, CCO MIAX Exchanges | Sell | 11,000 | $42.16 | $463.8K | 116,221 |
| Jun 4, 2026 | Brown Shelly | officer: EVP, Chief Strategy Officer | Sell | 16,000 | $42.12 | $673.9K | 325,047 |
| Jun 4, 2026 | Comly Barbara J. | officer: EVP, GC & Corporate Secretary | Sell | 28,000 | $42.85 | $1.20M | 843,844 |
| Jun 4, 2026 | Gallagher Thomas P. | director, officer: Chairman & CEO | Sell | 70,000 | $42.36 | $2.97M | 1,723,275 |
| Jun 4, 2026 | Teekell Judson Gray | director | Sell | 3,000 | $42.78 | $128.3K | 71,014 |
| Jun 4, 2026 | Schafer Douglas M. JR | officer: EVP and CIO | Sell | 48,000 | $42.84 | $2.06M | 396,681 |
| May 18, 2026 | Emmons Lance | officer: EVP and CFO | Sell | 35,000 | $56.36 | $1.97M | 84,262-29% |
| May 7, 2026 | Gallagher Thomas P. | director, officer: Chairman & CEO | Sell | 15,771 | $47.92 | $755.7K | 1,723,275 |
| May 5, 2026 | Brown Shelly | officer: EVP, Chief Strategy Officer | Sell | 16,000 | $47.28 | $756.5K | 325,047 |
| May 5, 2026 | Teekell Judson Gray | director | Sell | 3,000 | $47.30 | $141.9K | 56,338 |
| May 5, 2026 | Comly Barbara J. | officer: EVP, GC & Corporate Secretary | Sell | 28,000 | $47.26 | $1.32M | 843,844 |
| May 5, 2026 | Schafer Douglas M. JR | officer: EVP and CIO | Sell | 48,000 | $47.25 | $2.27M | 396,681 |
| May 5, 2026 | Eckert Kurt M. | director | Sell | 5,625 | $47.29 | $266.0K | 142,375 |
| May 5, 2026 | Gallagher Thomas P. | director, officer: Chairman & CEO | Sell | 54,229 | $47.26 | $2.56M | 1,723,275 |
| May 5, 2026 | Deitzel Edward | officer: EVP, CRO, CCO MIAX Exchanges | Sell | 11,000 | $47.28 | $520.1K | 116,221 |
| Apr 17, 2026 | Gallagher Thomas P. | director, officer: Chairman & CEO | Sell | 224,025 | $43.43 | $9.73M | 1,827,399 |
MIAX Insiders
Gallagher Thomas P.
director, officer: Chairman & CEO
Bought $276.0KSold $32.30M
10 tradesLast: Sep 4, 2026
Similar Stocks to MIAX
GS
The Goldman Sachs Group, Inc.
$915.72+2.33%
$260.10B
SCHW
The Charles Schwab Corporation
$89.07+1.20%
$155.17B
HOOD
Robinhood Markets, Inc.
$86.31+1.73%
$73.40B
TW
Tradeweb Markets Inc.
$123.64+0.89%
$25.88B
LPLA
LPL Financial Holdings Inc.
$291.89+2.89%
$21.20B
CRCL
Circle Internet Group
$73.93+1.92%
$20.74B
HUT
Hut 8 Corp.
$57.83-2.64%
$7.32B
SNEX
StoneX Group Inc.
$54.35+2.89%
$6.37B