S&P 500 7,757.17 +0.58%
Nasdaq 26,702.86 +1.05%
S&P/TSX 36,324.99 +0.60%
Apple 343.99 +1.32%
Nvidia 221.97 +2.54%
Microsoft 532.95 +0.20%
Shopify 244.93 +0.38%
Royal Bank 283.62 +1.23%
CAD/USD 0.7119 +0.14%
AFTER HRS · 18:25 ET
Market ClerkRecap
Wed Oct 21 · after hours2 signals today106 insider buys this week · $305.5MCIRO short report next: Oct 31The week ahead

MIAX

MIAMI INTERNATIONAL HOLDINGS, INC.
NYSE · FINANCIALS · SECURITY BROKERS, DEALERS & FLOTATION COMPANIES
33.49
+1.08 +3.33%
USD · close Oct 21

A free account adds a watchlist, alerts when insiders, Congress or short sellers move on your tickers, and a morning brief. Sign up

Short interest

FINRA · TWICE MONTHLY
Report dateShares shortChange% of shares outAvg daily volumeDays to cover
2026-08-316.8M−604K6.84%1.2M5.6
2026-08-147.4M+1.2M7.45%1.4M5.4
2026-07-316.2M−1.3M6.27%1.2M5.4
2026-07-157.6M−14K7.63%1.7M4.5

Short Watch, all names.

Watch MIAX. Know when insiders buy.
One email the day a filing lands. Free.