Guide · 8 min read
Best Free Stock Screeners of 2026
We compared the best free stock screeners of 2026 — Finviz, TradingView, Yahoo Finance and Day Trade Scanner — on the features that actually matter for day traders: real-time gappers, relative volume, catalysts and alerts.
What is a stock screener?
A stock screener is a tool that filters the entire market down to a short list of names matching criteria you choose — price, volume, market cap, percentage change, and so on. Instead of scrolling thousands of tickers, you set filters and get back the handful of stocks worth a closer look. For long-term investors that usually means fundamental filters like P/E ratio or dividend yield. For day traders it means something different: which stocks are gapping in the pre-market, which have unusual volume, and which have a news catalyst that might keep them moving after the 9:30 AM ET open.
There are more free stock screeners than ever, but “free” is not the same as “useful for day trading.” Many of the best free stock screeners are built for end-of-day investors, with delayed quotes and no way to see a pre-market gap or attach a catalyst to a mover. The right free stock screener for you depends on when and how you trade.
What to look for in a free stock screener
If you trade the open, a general-purpose tool is not enough. Here are the six filters that separate a real free stock screener for day trading from a research tool:
- Gap % — how far a stock is trading above or below its prior close in the pre-market. The number every gap trader starts with, and one most free screeners don’t show at all.
- Relative volume (RVOL) — current volume divided by its normal average. RVOL above 3–5× is the tell that a move has real participation and isn’t a head-fake.
- Float — the number of shares available to trade. A low float (under ~20M shares) is what turns an ordinary gap into a squeeze candidate.
- Price — a free screener should let you band the universe (for example $1–$20) so you’re not wasting time on names outside your size.
- Pre-market volume — you want a screener that reads pre-market prints, not just yesterday’s close.
- Catalysts — why is the stock moving? Earnings, FDA news, an upgrade, a buyout. A screener that can’t show the catalyst leaves you guessing.
The best free stock screeners, compared
Every screener below has a genuinely useful free tier — they just serve different jobs.
Finviz — best free fundamentals
Finviz is the default free stock screener for a reason. Its free tier covers fundamentals (P/E, P/S, dividend yield), technicals, sector heatmaps and insider activity, and it’s genuinely free with registration. For a long-term investor or swing trader doing evening research, it’s hard to beat. The catch for day traders is speed: free Finviz quotes are delayed, pre-market and after-hours data sit behind the paid Finviz Elite tier ($39.50/mo), and there’s no catalyst column to tell you why a stock is gapping. Use Finviz to build a watchlist the night before — not to trade the open in real time.
TradingView — best charts, average screener
TradingView’s free plan is famous for its charts and its large community of shared indicators and strategies. Its stock screener is competent and covers most standard filters, including relative volume — but on the free plan you get only one alert, real-time data for major exchanges is gated behind paid data packages, and you have to assemble gap % and catalyst context yourself. It’s a great charting-first tool and a fine free stock screener for swing trading, but it’s not built for the pre-market.
Yahoo Finance — best for casual research
Yahoo Finance is the most approachable free screen, and it’s fine for slow-moving research: sector performance, basic stats, headlines and portfolio tracking. But it’s not a day-trading tool. The free screener lacks float, relative volume, pre-market gappers and intraday alerts. Its reputation as the best free stock screener comes from ubiquity, not trading depth.
Day Trade Scanner — the pre-market gap specialist
Day Trade Scanner (MarketBeacon) is the only screener on this list built specifically for the pre-market. Every row shows real-time gap %, 5-minute relative volume, float, short interest and the primary catalyst behind the move — the exact checklist a gap trader works through before entering. The free tier shows the day’s top 5 gappers with live RVOL and catalyst tagging, no signup required. Pro ($1.99/wk) unlocks the full scanner, advanced filters, alerts and premarket charts; Elite ($3.99/wk) adds the trade journal, gap replay and position sizer.
Quick comparison
| Screener | Free tier | Best for | Gaps / RVOL support |
|---|---|---|---|
| Finviz | Free (registered) | Fundamentals, heatmaps, swing watchlists | RVOL yes; real-time pre-market gaps behind Elite |
| TradingView | Free (1 alert) | Charts & shared indicators | Manual RVOL; gap % needs setup; real-time data paid |
| Yahoo Finance | Free | Casual research & portfolio tracking | No RVOL, no pre-market gappers |
| Day Trade Scanner | Free (top 5 gappers) | Pre-market gap trading | Real-time gaps + 5-min RVOL + catalyst |
Feature-by-feature comparison
| Feature | Finviz | TradingView | Yahoo | Day Trade Scanner |
|---|---|---|---|---|
| Free tier | ||||
| Real-time pre-market gappers | Delayed | Delayed | ||
| Relative volume (RVOL) | Manual | |||
| Catalyst / news per row | ||||
| Short interest & days-to-cover | Paid | Delayed | ||
| Custom alerts (free) | 1 alert | |||
| Float filter | ||||
| After-hours scanner | ||||
| Mobile-friendly UI |
How free screeners stack up against paid scanners
The honest reason these free tiers exist is that the paid tier is where vendors make their money — and the paid tier is expensive. Finviz Elite is $39.50/mo (or $299.50/yr). Trade Ideas, the AI-alert scanner, runs $127–$254/mo. Benzinga Pro ranges from $37–$197/mo depending on news depth. Scanz, a desktop power scanner, is $89–$999/mo, and Momentum Radar is $59/mo. None of these are bad tools; they’re just priced for full-time traders with a serious budget.
Day Trade Scanner sits at the other end of that spectrum. Pro is $1.99/wk (about $8.60/mo) and Elite is $3.99/wk (about $17/mo) — below the cheapest serious paid competitor, Finviz Elite at about $25/mo on the annual plan. You aren’t getting everything Trade Ideas does, and you shouldn’t expect to at a fraction of the price. You’re getting the one thing that matters most for the open: real-time pre-market gaps, relative volume and catalysts, for less than the cost of a coffee.
Why a pre-market gap scanner is different
A general free stock screener answers “what matches my filters right now?” A pre-market gap scanner answers a different question: “what is actually moving before the bell, and why?” The difference is real-time data plus context. A stock that gaps 8% on a confirmed FDA approval with 20× relative volume and a 5M-share float is a very different trade than the same 8% gap on no news and thin volume. A screener that only shows price change can’t tell those two apart — and that’s the gap a best free stock scanner is supposed to close.
That’s why the order of operations matters for day traders: use a fundamentals screener (Finviz) the night before, use charts (TradingView) to mark your levels, then use a pre-market gap scanner the morning of to see which names are actually gapping with volume and a catalyst. When a big name like NVDA gaps on earnings, its chart page is where you mark the pre-market high, low and VWAP levels before the bell. If you want to see what’s moving right now, the top premarket gappers today list shows the same gap %, RVOL and catalyst data the scanner uses.
Which one should you use?
- Long-term investor researching fundamentals → Finviz.
- Swing trader who lives in charts → TradingView.
- Casual portfolio check-ins → Yahoo Finance.
- Day trading the open or scanning gappers in real time → Day Trade Scanner.
Frequently asked questions
What is the best free stock screener for day trading?
For day trading the open, a free stock screener needs real-time pre-market gaps, relative volume and a catalyst. Day Trade Scanner’s free tier shows the top 5 gappers with live RVOL and catalyst tagging; Finviz is the best free screener for fundamentals research the night before.
Is Finviz free to use?
Yes. Finviz has a free registered tier with fundamentals, technicals, heatmaps and insider activity. Real-time pre-market and after-hours data require Finviz Elite ($39.50/mo).
Do free stock screeners show pre-market gappers?
Most do not. TradingView and Yahoo Finance don’t surface real-time pre-market gappers on their free tiers, and Finviz gates pre-market data behind Elite. A dedicated pre-market scanner like Day Trade Scanner shows them free (top 5) with the full list on Pro.
What is the difference between a stock screener and a stock scanner?
The terms are often used interchangeably. Strictly, a screener runs a one-time filtered query, while a scanner runs continuously and alerts you the moment a condition is met. Day traders want scanner behavior: real-time gappers plus alerts, not a static evening list.
Try the scanner free
The free tier shows the day’s top 5 gappers with live RVOL and catalyst tagging — no signup required to look.