MomentumSift
Learn
Launch app →
The best unusual options activity scanner, compared
The best unusual options activity scanner depends on whether you need a real-time tape or a clean end-of-day shortlist. Here is a fair comparison of the main options, and where a free, premium-ranked scanner fits.
Try the free scanner →What separates a good scanner from a noisy one
Most flow feeds are dominated by the same mega-caps, index ETFs, and deep in-the-money contracts that are really just stock substitutes. The scanners worth using do three things: rank by the premium actually at risk rather than a big headline dollar figure, flag fresh positioning where volume runs above open interest, and give you the context to check a print against the stock's trend instead of trading it blind.
Feature comparison
| Feature | MomentumSift | Unusual Whales | Market Chameleon |
|---|---|---|---|
| Price | Free in beta | Paid (limited free tier) | Freemium |
| Data timing | End of day | Real-time | Intraday and end of day |
| Fresh positioning (volume over OI) | Yes | Yes | Yes |
| Built-in noise filtering | Time-value premium, one row per name, ETFs excluded | Filterable | Filterable |
| Multi-day repeat flow | Yes | Yes | Yes |
| Dark pool and congressional data | No | Yes | Limited |
| Momentum context (RS, cross history) | Yes | Limited | Limited |
Who each is for
MomentumSift fits someone who wants a free, de-noised end-of-day board and the stock context to act on it the next session. Unusual Whales fits an active trader who needs a real-time tape plus dark pool and congressional data, in a paid subscription. Market Chameleon fits a trader who wants deep options analytics (historical volatility, earnings, screeners) on a freemium plan. Many people pair a free end-of-day scanner for research with a paid tape for execution.
What MomentumSift does differently
The unusual options activity scanner ranks by time-value (extrinsic) premium, so a deep in-the-money block that is almost all intrinsic value does not top the board over a real speculative bet. It collapses each name to one row, excludes index ETFs, flags volume above open interest as new positioning, and tracks multi-day repeat flow. Then it sits inside a momentum terminal, so you can line a print up against the stock's RS rating and cross history. It is free while in beta.
FAQ
- What makes a good unusual options activity scanner?
- One that separates real speculation from noise: ranking by the premium actually at risk, flagging volume above open interest, filtering out index-ETF and deep in-the-money stock-substitute flow, and giving context to check a print against the trend. Real-time data helps intraday but is not required to research positioning.
- What is the best free unusual options activity scanner?
- It depends on your workflow. For a free, de-noised end-of-day shortlist, MomentumSift ranks by time-value premium, shows one row per name, excludes index ETFs, and flags volume above open interest. For a real-time tape and alternative data, Unusual Whales does more, and Market Chameleon offers deep analytics on freemium.
- Do I need real-time data to scan unusual options?
- Not to research positioning. An end-of-day snapshot is enough to see where large, unusual bets were placed and build a shortlist. You need real-time data only if you intend to react to flow during the session itself.