Find the right screener for how you actually trade
Screeners run from free tools that build a first watchlist to professional platforms that scan thousands of contracts in real time. The right one depends on what gets traded, how fast the data needs to be, and how deep the filters go. These comparisons make that choice take minutes, not weekends.
What separates a good screener from a weak one
Four things decide whether a screener fits a given trader. Everything else is detail.
Coverage
US-only, global, or a single market like India, and whether it reaches ETFs, futures, forex, and options. Coverage decides if the tool can even see what a trader wants to trade.
Data timing
Real-time, 15-minute delayed, or end-of-day. Intraday traders need real-time; an end-of-day screen is fine for a weekly watchlist and useless at the open.
Filter depth
A handful of basic fields versus hundreds of fundamental and technical criteria with custom formulas. Depth is what separates a quick look from a real edge.
Price
Free with an account, a modest subscription, or well past $100 a month for flow and scanning. The best free tools do most of what a beginner needs.
A few that earn their place
A taste of where the full rankings land, two for stocks and two for options.
Finviz
Sorts the entire US market on hundreds of filters in seconds, and the free version does what most traders ever need.
TradingView
Screens stocks, ETFs, forex, and crypto across 50-plus countries on the free tier, then charts any result in one click.
Market Chameleon
The deepest options screening for the price, with IV rank, unusual activity, and full strategy screeners in one place.
Unusual Whales
Real-time options flow and a screener across every US contract, with a free tier to start before paying for the live data.
Compare every tool, ranked and matched to a trader
Two roundups do the work of choosing. Each one names clear winners and says who the tool is actually for, rather than listing everything as equal.
Best Stock Screeners
From free market maps to professional real-time scanners, ranked and matched to value investing, day trading, dividends, and global markets.
Compare stock screeners → 19 tools comparedBest Options Screeners
Covering unusual activity, real-time flow, implied volatility, and full strategy screening, ranked by who each platform genuinely suits.
Compare options screeners →Guides to go deeper
Short, practical walk-throughs for getting real results out of a screener.
How to Use a Stock Screener
Turn a goal into filters, read the output, and avoid the value traps a screen cannot see.
StocksHow to Build a Watchlist From a Screener
Move results into a focus list, organize by strategy and levels, and keep it from going stale.
OptionsHow to Screen for Unusual Options Activity
Use the volume-to-open-interest ratio to spot where real money is quietly positioning.
OptionsHow to Read Options Flow: Sweeps vs Blocks
Tell aggressive sweeps from negotiated blocks, and read what each order type signals.
Every tool is judged on what it does, what it costs, and who it is for. No screener is treated as one-size-fits-all.