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AI-Powered Market Intelligence
Understand the reason behind any stock move.
Compare expected move versus realized move with deterministic math.
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Expected Move vs Actual Move Calculator
Compare implied expected move with actual post-event move.
Evaluate whether realized event volatility came in above or below expected move assumptions.
Results
Move surprise
+2.00%
Actual move was +8.00% vs 6.00% expected.
- Actual move
- +8.00%
- Expected move
- 6.00%
- Absolute actual move
- 8.00%
- Surprise
- +2.00%
Formula
Move Surprise = |Actual Move %| - Expected Move %
Example
- Expected move %: 6
- Pre-event price: 100
- Post-event price: 108
What does this mean?
- •Positive surprise means actual move exceeded expected move.
- •Negative surprise means realized move was smaller.
- •Useful for post-event volatility review.
See if volatility was underpriced or overpriced
Compare expected move versus realized move with deterministic math.
What is a expected move vs actual move?
Evaluate whether realized event volatility came in above or below expected move assumptions. In practice, this means you can quantify expected move vs actual move using expected move %, pre-event price, and post-event price without relying on hidden assumptions or black-box scoring.
Primary input set for this calculator: Expected move %, Pre-event price, Post-event price.
How to calculate expected move vs actual move
- 1.Step 1: Enter expected move % with the timeframe/context you want to evaluate.
- 2.Step 2: Enter pre-event price with the timeframe/context you want to evaluate.
- 3.Step 3: Enter post-event price with the timeframe/context you want to evaluate.
- 4.Step 4: Apply formula Move Surprise = |Actual Move %| - Expected Move %.
- 5.Step 5: Interpret output together with risk, liquidity, and catalyst context.
Why this metric matters
This metric standardizes raw price action so you can compare moves across different tickers, sessions, and catalyst windows.
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 expected move vs actual move 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
Positive surprise means actual move exceeded expected move
Use this expected move vs actual move workflow to quantify this scenario with deterministic inputs.
Negative surprise means realized move was smaller
Use this expected move vs actual move workflow to quantify this scenario with deterministic inputs.
Useful for post-event volatility review
Use this expected move vs actual move workflow to quantify this scenario with deterministic inputs.
Event reaction review
Recalculate expected move vs actual move immediately after earnings, filings, or macro headlines.
Interpretation tips
- •Re-run expected move vs actual move 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 expected move vs actual move calculator work?
Expected Move vs Actual Move Calculator is deterministic and uses only your inputs (expected move %, pre-event price, post-event price). Formula: Move Surprise = |Actual Move %| - Expected Move %.
What does this output tell me in practice?
Compare implied expected move with actual post-event move. Pair this with a stop-loss and thesis review, not just return math.
Does the expected move vs actual move 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.
Related tools
Earnings Move Calculator→Stock Percentage Move Calculator→Pre-Market Move Calculator→After-Hours Move Calculator→
Popular searches
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