Position Volatility Impact Calculator
From account value, the position's share and the asset's move %, estimate the dollar and percentage impact on the account.
Results
Fill in the inputs and click Calculate.
- Impact Amount
- –
- Account Impact %
- –
Risk disclaimer
Assumes independence of weight and move; excludes correlation, leverage and slippage.
What does this answer?
A 10% move hits a 10% weight by 1% of the account, but a 50% weight by 5%.
Convert the asset move into an account move first, then judge whether it is tolerable.
How to use
- Enter total account value.
- Enter the position's share (e.g. 20%).
- Enter the expected move (e.g. 10%) and click Calculate.
Formula
- Account impact = account × weight × move
- Account impact % = weight × move
Example
Account 100,000, weight 20%, move 10% → impact 2,000 (2%).
At a 5% weight the same move hits only 0.5%.
FAQ
Is the move a forecast?
No — it is your scenario; pick a plausible value with volatility tools.