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AI-Powered Market Intelligence
Understand the reason behind any stock move.
Beta helps frame how strongly a stock moves with broad market swings.
AI-Powered InsightsReal-Time DataNo Noise. Just Clarity.
Beta Calculator
Calculate beta versus market return observations.
Estimate beta deterministically from stock and market return pairs using covariance and market variance.
Results
Beta
1.608
Estimated beta is 1.608 from 5 paired return observations.
- Covariance
- 0.000145
- Market variance
- 0.000090
- Beta
- 1.608
Formula
Beta = Cov(stock returns, market returns) ÷ Var(market returns)
Example
- Stock return 1 (%): 1.6
- Market return 1 (%): 1
- Stock return 2 (%): -1.2
- Market return 2 (%): -0.7
- Stock return 3 (%): 2.3
- Market return 3 (%): 1.5
- Stock return 4 (%): 0.2
- Market return 4 (%): 0.1
- Stock return 5 (%): -0.9
- Market return 5 (%): -0.5
What does this mean?
- •Beta above 1 implies higher market sensitivity.
- •Beta below 1 implies lower sensitivity to broad index moves.
- •Negative beta can indicate inverse behavior over sample period.
Measure systematic sensitivity to the market
Beta helps frame how strongly a stock moves with broad market swings.
What is a beta?
Estimate beta deterministically from stock and market return pairs using covariance and market variance. In practice, this means you can quantify beta using stock return 1 (%), market return 1 (%), stock return 2 (%), market return 2 (%), stock return 3 (%), market return 3 (%), stock return 4 (%), market return 4 (%), stock return 5 (%), and market return 5 (%) without relying on hidden assumptions or black-box scoring.
Primary input set for this calculator: Stock return 1 (%), Market return 1 (%), Stock return 2 (%), Market return 2 (%), Stock return 3 (%), Market return 3 (%), Stock return 4 (%), Market return 4 (%), Stock return 5 (%), Market return 5 (%).
How to calculate beta
- 1.Step 1: Enter stock return 1 (%) with the timeframe/context you want to evaluate.
- 2.Step 2: Enter market return 1 (%) with the timeframe/context you want to evaluate.
- 3.Step 3: Enter stock return 2 (%) with the timeframe/context you want to evaluate.
- 4.Step 4: Enter market return 2 (%) with the timeframe/context you want to evaluate.
- 5.Step 5: Enter stock return 3 (%) with the timeframe/context you want to evaluate.
- 6.Step 6: Enter market return 3 (%) with the timeframe/context you want to evaluate.
- 7.Step 7: Enter stock return 4 (%) with the timeframe/context you want to evaluate.
- 8.Step 8: Enter market return 4 (%) with the timeframe/context you want to evaluate.
- 9.Step 9: Enter stock return 5 (%) with the timeframe/context you want to evaluate.
- 10.Step 10: Enter market return 5 (%) with the timeframe/context you want to evaluate.
- 11.Step 11: Apply formula Beta = Cov(stock returns, market returns) ÷ Var(market returns).
- 12.Step 12: Interpret output together with risk, liquidity, and catalyst context.
Why this metric matters
This metric helps convert raw time-series data into consistent signals for momentum, mean-reversion, and volatility context.
Pair this calculator with catalyst context from headlines, filings, and options flow to avoid relying on isolated numbers.
When to use this calculator
- ✓Before opening a new position where beta impacts sizing or risk.
- ✓After a catalyst to quantify how much conditions changed versus your baseline.
- ✓When comparing setups across multiple tickers with one consistent formula.
- ✓During weekly review to keep decision-making tied to measurable inputs.
Common scenarios
Beta above 1 implies higher market sensitivity
Use this beta workflow to quantify this scenario with deterministic inputs.
Beta below 1 implies lower sensitivity to broad index moves
Use this beta workflow to quantify this scenario with deterministic inputs.
Negative beta can indicate inverse behavior over sample period
Use this beta workflow to quantify this scenario with deterministic inputs.
Event reaction review
Recalculate beta immediately after earnings, filings, or macro headlines.
Interpretation tips
- •Re-run beta whenever key inputs change materially, not only when price moves.
- •Document assumptions so the same methodology can be repeated across watchlist names.
- •Use this metric as one layer in the decision stack, not as a standalone trade trigger.
Data caveats
- –Outputs are deterministic from your inputs; input quality determines output quality.
- –This page does not auto-adjust for broker fees, taxes, or slippage unless you include them in your assumptions.
- –Validate corporate action details, filing dates, and data freshness before acting on results.
FAQ
How does the beta calculator work?
Beta Calculator is deterministic and uses only your inputs (stock return 1 (%), market return 1 (%), stock return 2 (%), market return 2 (%), stock return 3 (%), market return 3 (%), stock return 4 (%), market return 4 (%), stock return 5 (%), market return 5 (%)). Formula: Beta = Cov(stock returns, market returns) ÷ Var(market returns).
What does this output tell me in practice?
Calculate beta versus market return observations. Technical indicators are context tools, so combine them with trend, liquidity, and catalyst awareness.
Does the beta calculator use real-time market feeds?
No. This page does not auto-pull live data. You control all inputs and can rerun instantly as market conditions change.
Can I use this result directly for trading decisions?
Use it as a planning layer. Combine with position sizing, liquidity, and catalyst context before any execution.
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