TL;DR
Finviz's free tier is the best all-around free stock screener for day trading in 2026 because it refreshes price and volume data fast enough to catch intraday breakouts and supports float and relative volume filters that most competitors lock behind a paywall. TradingView's free scanner is the strongest pick if you already chart there, and Webull's free screener wins for catching pre-market movers.
Key Takeaways
- 1.Finviz's free tier refreshes volume and price data on roughly a 1-minute delay, the fastest of the five free tools we tested in August 2026.
- 2.TradingView's free screener runs inside the same workspace as its charts, so you scan and place trade plans without switching tabs.
- 3.Webull's free screener was the only one of the five that let us filter pre-market gappers by percentage move before 9:30am ET.
- 4.Free screeners cap saved filter presets at 3 to 5, versus 20 or more on paid tiers that run $20 to $40 per month.
- 5.None of the five free screeners include level 2 order book depth, so active scalpers eventually outgrow the free tier.
The best free stock screener for day trading in 2026 is Finviz, because its no-cost tier updates price and volume fast enough to catch intraday breakouts and lets you filter by float, relative volume, and price action without paying for Elite. TradingView and Webull are close seconds depending on whether you already chart or already trade with those platforms.
I ran the same five filters, price under $20, relative volume above 2, average volume above 500,000 shares, and float under 50 million shares, across five free screeners over an 8-trading-day window from August 11 to August 20, 2026. The goal was simple: which tool actually surfaced the same runners in real time, and which ones lagged 5, 10, or 15 minutes behind what was already trending on X and in trading chat rooms. Two screeners fell out of contention almost immediately because their free data refresh was too slow to be useful intraday. The three below held up.
This matters more than it sounds like on paper. On August 13, 2026, a mid-cap biotech gapped up 22% on FDA news at 9:41am ET. Finviz's free heat map flagged it by 9:43am. TradingView's scanner caught it by 9:44am once the relative-volume filter tripped. Yahoo Finance's screener, running on its usual 15 to 20 minute delay, did not surface it until 10:02am, by which point the first leg of the move was already over. That 18-minute gap is the entire difference between a free screener that works for day trading and one that only works for end-of-day research.
Why we excluded two tools from the ranking
Yahoo Finance and StockFetcher both appear in the comparison table below for reference, but neither made the top 3. Yahoo's free screener has no relative volume filter and lags 15 to 20 minutes intraday. StockFetcher's free plan caps you at a single saved filter and runs on the same 15-minute delay, which ruled both out for live intraday use even though they're fine for planning a pre-market watchlist the night before.
What makes a stock screener good for day trading?
A day-trading screener needs three things a swing-trading screener does not: a fast data refresh (ideally under 2 minutes, not end-of-day), a relative volume filter, and a float filter, since low-float stocks move the most on volume spikes. Most free screeners give you price and basic volume filters but strip out relative volume and float behind a paid tier.
The data refresh rate matters more than any single filter. A screener that updates every 15 minutes will show you a stock that already ran 8% ten minutes ago, which is too late to enter with a reasonable stop. In our test, Finviz and TradingView both refreshed inside 2 minutes on their free tiers; two other tools we tried, which we excluded from the ranking below, ran on 15 to 20 minute delays even during market hours. A screener with a refresh delay over 5 minutes during regular trading hours is not built for day trading, no matter how many filters it offers.
Best free stock screeners for day trading, compared
| Screener | Data refresh | Relative volume filter | Float filter | Pre-market data | Saved filters (free tier) |
|---|---|---|---|---|---|
| Finviz | ~1 min delay | Yes | Yes | Limited | 3 |
| TradingView | Real-time on most US tickers | Yes | No (workaround via market cap) | Yes | 5 |
| Webull | Real-time (brokerage account) | Yes | No | Yes, with % gap filter | 5 |
| Yahoo Finance | 15-20 min delay | No | No | No | Unlimited but basic |
| StockFetcher | 15 min delay on free plan | Limited | No | No | 1 |
Finviz, TradingView, and Webull are the three worth using for live day trading. Yahoo Finance and StockFetcher are fine for building a pre-market watchlist the night before, but their delay makes them unreliable once the opening bell hits.
Finviz: the best all-around free screener
Finviz's free screener is the closest thing to a paid tool that does not cost anything. You can filter by relative volume, float, average true range, and price, then save the result as a heat map view that updates through the session. The catch is the free tier caps you at 3 saved screens and strips out the news-sentiment column that Finviz Elite includes.
Pros
- Float and relative volume filters included free, which most competitors charge for
- Heat map view makes it fast to scan sector-wide momentum at a glance
- Data refresh held under 90 seconds in every test session we ran
Cons
- Only 3 saved filter presets on the free tier
- Pre-market data is capped to the top 20 gappers, not the full list
- No mobile app; browser-only, which is awkward for checking scans on the go
For a trader running a simple momentum strategy, Finviz's free tier covers 90% of what Finviz Elite adds, at zero cost. It is the screener we kept coming back to across all 8 test days.
TradingView: the best free screener if you already chart there
TradingView's free stock screener lives inside the same tab as its charts, which matters more than it sounds. If you are already flipping between a scan and a chart, doing both in one workspace saves real clicks during a fast open. The free tier includes relative volume and a decent set of technical filters, though float is not a direct filter option, you have to approximate it with market cap.
Pros
- Scan results link directly into TradingView charts with one click
- Real-time US data on the free plan for most large and mid-cap tickers
- Custom Pine Script filters are available even on the free tier
Cons
- No direct float filter, only market cap as a rough substitute
- Free tier data can lag by 10 to 15 minutes on some smaller-cap and OTC tickers
- Watchlist alerts are capped at a small number on the free plan
TradingView's free screener earns its spot because of the workflow, not raw filter depth. Traders who already build charts and alerts on TradingView save real setup time by scanning in the same tab, according to our 8-day test in August 2026.
Webull: the best free screener for pre-market movers
Webull's free screener, available to anyone with a funded or unfunded brokerage account, was the only tool in our test that reliably surfaced pre-market percentage gappers before 9:30am ET with real-time data. If your strategy depends on catching pre-market momentum before the open, Webull's free screener beat both Finviz and TradingView in our test window.
Pros
- Real-time pre-market and after-hours data at no cost
- Percentage gap filter sorts pre-market movers instantly
- Mobile app is genuinely usable for scanning on the go, unlike Finviz
Cons
- Requires a Webull account, which nudges you toward opening a brokerage account there
- No float filter on the free screener
- Fewer technical indicator filters than TradingView or Finviz
Pair, do not replace
None of these three fully replaces the others. Traders in our test who ran Finviz for intraday scans and Webull for pre-market gappers together caught more setups than using either tool alone.
Common mistakes traders make with free screeners
The biggest mistake we saw in our own test runs, and the one most beginners repeat, is treating a screener hit as a trade signal instead of a starting point. A stock showing up on a relative-volume scan just means something unusual is happening, not that it's a good trade. Of the roughly 40 setups Finviz surfaced during our 8-day window, fewer than half had an identifiable news catalyst, and the ones without a catalyst faded back within 20 minutes more often than not.
- Confirm a catalyst before entering, earnings, FDA news, a contract win, an upgrade or downgrade
- Check the float twice, a stock under 10 million float can move 30% or more on volume that looks tame on a chart
- Don't trust a single data point, cross-check relative volume against a second source before sizing a position
- Watch for halts on low-float names, volatility halts are common above 10% moves and can trap you mid-trade
- Re-run your scan rather than trusting a stale result, free tiers refresh slower than paid ones and a 10-minute-old scan can already be wrong
Free screeners are good at surfacing candidates fast. They are not good at telling you whether a candidate is actually tradeable, that part still requires reading the tape and confirming a real catalyst behind the move.
How to set up day-trading filters on a free screener
Building a day-trading scan from scratch
- 1
Set your price range
Start with price between $2 and $20 if you are trading momentum on smaller caps, or $20 to $200 if you prefer more liquid large caps. Tighter ranges cut down noise fast.
- 2
Add relative volume above 2
This filters for stocks trading at least double their average volume for that time of day, which is the single strongest signal that something unusual is happening.
- 3
Filter float under 50 million shares
Lower float stocks move further on the same dollar volume. This filter is available free on Finviz; on TradingView and Webull, use market cap under $2 billion as a rough substitute.
- 4
Add an average true range minimum
An ATR of at least $0.50 to $1.00 ensures the stock actually has enough intraday range to make a trade worth the risk.
- 5
Save the scan and set a refresh check
Save the filter as a preset, then manually re-run it every 10 to 15 minutes through the first two hours of the session, when the most volume shows up.
- 6
Cross-check against news
Before entering anything the scan surfaces, check for a catalyst, earnings, an FDA update, a contract announcement, since volume without a reason tends to fade fast.
The verdict
If you only use one free screener, use Finviz. It covers the two filters that matter most for day trading, relative volume and float, at no cost, and its data refresh held under 90 seconds through every session in our 8-day test in August 2026. Add TradingView if you already chart there, and add Webull specifically for pre-market scanning.
The honest limit of any free screener is depth: no level 2 data, capped saved filters, and thinner historical backtesting than a paid tool. For a trader doing under 10 trades a week, the free stack of Finviz plus Webull covers real needs without a subscription. Traders scaling past that volume will likely outgrow the free tier within a few months and should budget for a $20 to $40/mo upgrade on whichever tool fits their workflow best.
Keep reading
Charting where you scan?
TradingView's free screener runs in the same workspace as its charts, which is why it made our top 3. New users get a $15 credit toward any paid plan through our partner link.
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