Financial Derivatives Scanner for Options

Filter and Screen over 10 million options by 26 metrics including implied volatility, greeks, Percentage OTM and more. With our Options Scanner, you can be much more efficient finding the ideal option for hedging, trading, or premium selling.
Use our Tendies Index and Skew Index to find underpriced options and unusual activity scanner to find moves by big players.


Have you ever researched options by going to one option chain at a time? Did you find that inefficient and time consuming?

FDscanner started because the site creator wanted to optimize his research for selling put premium, and expand his research across the entire option universe. 

We launched with the Options Scanner, and over time added additional features. The Tendies index screens for unusually low priced options with respect to 10 day stock price volatility, while the Skew index finds stocks with high Put/Call price imbalances.

If you made over $100 with this site, consider upgrading to Pro which has all 3702 US stocks with options. The free site contains S&P500 stocks.

Option Scanner

Filter and screen millions of options to your liking

Put/Call Skew

Finds stocks with unusual Put/Call price imbalance

Tendies Index

Find weekly options with high multibagging potential

Unusual Activity

Finds options with high volume to open interest ratio

MAX Tendies Index

A purpose built screener for weekly options with tight spreads.

 We built a custom indicator, NTR, based on past 10 days volatility and used it to set price targets for every stock. Then we rank all options by the number of times it will multibag if that price target is hit. The number of times it’ll multibag is the Tendies Index.

In short, the Tendies index finds options that are underpriced relative to recent price movement, narrowing down millions of options to a hundred. It will then be up to you, the trader, to find and seize profitable trades. The index updates every 15 minutes during trading hours, and does a final update at Friday, 90 minutes after open.

Put/Call Skew Index

What is Skew index

Call Skew index shows the ratio of 10% OTM calls to 10% OTM puts and vice versa for Put Skew index. 

The option expiry date used is the next monthly expiry date, it’s always between 30 – 60 DTE.

Find Supply/Demand imbalances​

An equally OTM put and call should theoretically be priced the same. Skew index curates a list of stocks with unusual supply/demand imbalance in options for you to research further.

Using the Skew index

  • If you’re a contrarian, you yield better risk/reward ratios betting against the skew.
  • Put premium sellers benefits from high put skew.
  • A basket of put options with high call skew could be a more effective hedge than SPY puts.

Unusual Option Activity

Retrieves unusual stock option activity, defined by high volume to open interest ratio. Option volume that exceeds open interest signals new positions by institutional traders. 

Arbitrage Scanner

We find options that deviates significantly from the Theo value, allowing you to open a position and immediately book a mark to market profit. It scans for calls and puts where Theo is above ask (Underpriced) or Theo is below bid (Overpriced).

Tutorial & Blogs

Our blog covers option scanning tutorials, hedging strategies and more.

Unlock all 3702 US Stocks with Options for $45/month

If you have made money with FDscanner, consider upgrading to Pro with 7.5x the number of stocks available in the Option Scanner, Arbitrage Scanner, Tendies and Skew index and Unusual activity scanner.

For Intraday Traders

We created a new service, MiiAlgo for intraday traders. MiiAlgo finds and alerts you as stocks start exhibiting unusual and extreme momentum so that you can jump in the trend early. Find out more at the link below