Market leaders usually start outperforming before the story becomes obvious. A good relative strength screener helps you see that leadership early.
Quick Answer
The best relative strength screener depends on how you trade:
| Tool | Best For | Main Strength |
|---|---|---|
| Stock Alarm Pro | RS plus screener, charts, and alerts | Find leaders and turn them into monitored watchlists |
| IBD MarketSurge | CANSLIM growth investors | Proprietary RS ratings and growth-stock workflow |
| TradingView | Custom chart builders | Flexible relative performance charts and scripts |
| StockCharts | Technical RS charting | Ratio charts, relative rotation, and technical overlays |
| Finviz | Fast free screening | Simple performance and technical filters |
| Koyfin | Dashboard-driven research | Relative performance charts with market data context |
Relative strength is simple: is this stock beating the thing it should be compared with? That comparison might be the S&P 500, the Nasdaq 100, a sector ETF, or a basket of peers.
Relative Strength vs. RSI
| Concept | What It Measures | Example |
|---|---|---|
| Relative strength | Performance vs. another asset or benchmark | NVDA outperforming SPY over 26 weeks |
| RSI | A stock's own recent momentum | NVDA RSI above 70 after a sharp rally |
| Relative strength rank | Percentile rank vs. a universe | Top 10% of S&P 500 by 6-month performance |
| Sector relative strength | Stock vs. sector or sector vs. market | XLI outperforming SPY |
Do not confuse them. RSI can say a stock is stretched. Relative strength can say the same stock is still a leader. Both can be true.
What to Look For in a Relative Strength Screener
| Feature | Why It Matters |
|---|---|
| Benchmark choice | A tech stock should be compared with market and sector context |
| Ranking percentile | Percentiles are easier to screen than raw performance numbers |
| Time horizons | 1-month, 3-month, 6-month, and 12-month RS answer different questions |
| Sector view | Leadership often starts at the sector level |
| Alert workflow | A leader is only useful if you monitor the breakout or breakdown |
| Fundamental overlay | The best leaders often combine price strength with business strength |
The Contenders
1. Stock Alarm Pro
Best for: Investors who want to find relative strength leaders and monitor them with alerts.
Stock Alarm Pro combines ranking, screening, charting, and alerting. That matters because relative strength is not a one-time discovery task. Leadership changes. A stock can move from emerging leader to crowded winner to broken leader in a few months.
What stands out:
- Relative strength views connected to the broader screener
- Power rankings for finding market leaders
- Sector and market context
- Chart and quote-page workflow
- Alerts for breakout, volume, price, RSI, and moving average conditions
- Atlas AI follow-up for researching why a leader is outperforming
Limitations:
- Not built around a single proprietary CANSLIM rating system
- Advanced custom ratio scripting is better in TradingView
Try it:
2. IBD MarketSurge
Best for: Growth investors following CANSLIM-style leadership screens.
IBD has long emphasized relative strength as a core growth-stock factor. MarketSurge is useful for investors who want RS ratings, chart patterns, earnings strength, and growth-stock discipline in one workflow.
What stands out:
- Well-known RS rating framework
- Growth-stock focus
- Chart pattern workflow
- Strong education around leaders and breakouts
Limitations:
- More specialized toward growth and CANSLIM
- Less flexible for investors who want broader cross-asset or custom workflows
3. TradingView
Best for: Traders building custom relative performance charts.
TradingView is extremely flexible. You can plot ratio charts, compare symbols, write scripts, and build alerts around custom logic.
What stands out:
- Flexible charting engine
- Ratio charts and custom scripts
- Large community library
- Strong technical alert workflow
Limitations:
- Requires more setup
- Screening for RS rankings can be less direct than dedicated screeners
- Fundamental and portfolio monitoring are not the core advantage
4. StockCharts
Best for: Technical analysts who use ratio charts and relative rotation.
StockCharts has a long history in technical analysis. Its relative strength and ratio chart tools are useful for visualizing leadership and rotation.
What stands out:
- Ratio charting
- Relative rotation style workflows
- Technical analysis depth
- Good educational material
Limitations:
- Less modern app workflow than newer platforms
- Alerts and research integration depend on setup
5. Finviz
Best for: Fast free screening.
Finviz is useful for quick screens by performance, sector, market cap, and other simple filters. It is not the deepest relative strength platform, but it is fast.
What stands out:
- Free and fast
- Simple performance filters
- Good market snapshot
- Easy for idea generation
Limitations:
- Relative strength ranking is not as rich
- Limited workflow after discovery
- Alerts and portfolio monitoring are not central
6. Koyfin
Best for: Dashboard users who want relative performance in a broader research platform.
Koyfin is strong for charting, dashboards, and market data context. It can help investors compare stocks, ETFs, sectors, and macro assets.
What stands out:
- Clean relative performance charts
- Strong dashboards
- Good market and macro context
- Useful for multi-asset comparisons
Limitations:
- Less direct as a dedicated RS screener
- Alerts are not the main workflow
Head-to-Head Comparison
| Feature | Stock Alarm Pro | IBD MarketSurge | TradingView | StockCharts | Finviz | Koyfin |
|---|---|---|---|---|---|---|
| RS ranking workflow | Yes | Yes | Custom | Yes | Basic | Yes |
| Sector leadership context | Yes | Yes | Custom | Yes | Basic | Yes |
| Screener integration | Yes | Yes | Yes | Limited | Yes | Yes |
| Alert integration | Yes | Yes | Yes | Limited | Limited | Limited |
| Fundamental overlay | Yes | Yes | Limited | Limited | Basic | Yes |
| Best role | RS to alert workflow | Growth leaders | Custom charts | Technical RS | Free scan | Dashboard research |
A Relative Strength Workflow
| Step | What to Do | Why |
|---|---|---|
| 1. Rank the universe | Sort by 3-month or 6-month relative strength | Find current leadership |
| 2. Check sector context | Confirm the sector is also improving | Sector tailwinds make leadership more durable |
| 3. Filter for setup | Look for consolidation, volume, and trend support | Avoid chasing extended names |
| 4. Check fundamentals | Confirm revenue, margins, and earnings are not breaking | Price strength without business support is fragile |
| 5. Set alerts | Monitor breakout level, pullback zone, or RS deterioration | Leadership changes need follow-up |
Which Tool Should You Use?
Use Stock Alarm Pro if you want to go from relative strength discovery to charts, research, and alerts in one place.
Use IBD MarketSurge if you follow CANSLIM and want a growth-stock RS framework.
Use TradingView if you want custom ratio charts and scripts.
Use StockCharts if you like traditional technical RS and rotation workflows.
Use Finviz if you need a fast free scan.
Use Koyfin if you want relative performance inside a broad research dashboard.
FAQ
What is the best relative strength screener?
Stock Alarm Pro is strongest when you want relative strength connected to a screener and alerts. IBD MarketSurge is strong for growth investors. TradingView and StockCharts are strong for custom technical charting.
What does relative strength mean in stocks?
Relative strength measures how a stock performs compared with a benchmark, sector, or peer group. High relative strength means the stock is outperforming.
Is relative strength the same as RSI?
No. Relative strength compares one asset to another. RSI measures a stock's own recent momentum.
How do traders use relative strength screeners?
They find stocks outperforming the market, identify sector leaders, and set alerts for breakouts or leadership deterioration.
Can relative strength help long-term investors?
Yes. It can help long-term investors avoid persistent laggards and notice when leadership shifts away from their holdings.
Find Leaders, Then Monitor Them
Start with Stock Alarm Pro:
Relative strength is most useful when it becomes a process: rank, verify, monitor, and update.
Disclaimer: This article is for informational and educational purposes only and is not investment advice. Relative strength is backward-looking and can reverse quickly.
