Unusual Options Activity Scanner & Retail Order Flow

Retail traders evaluating alternative market scanners on our institutional options analytics portal rely heavily on an unusual options activity scanner retail trader order flow engine. By filtering the consolidated Options Price Reporting Authority (OPRA) feed for trades where volume exceeds open interest (Vol > OI), algorithms isolate aggressive directional positioning.

Dissecting flow mechanics requires distinguishing between intermarket sweeps and floor blocks. An intermarket sweep print executed at the ask across multiple exchanges indicates urgency, signaling that an institutional participant is paying a volatility premium to establish delta exposure before a catalyst unfolds.

However, professional desk quantitative traders combine raw volume alerts with implied volatility skews and dealer gamma positioning. Without analyzing whether call buyers are matched against retail market makers or sophisticated proprietary desks, following unverified alerts often results in buying inflated premium at local implied volatility tops.