State Street SPDR MSCI ACWI ex-US ETF

CWIAMEX · USD
40.83USD0.00 (-1.69%)

State Street SPDR MSCI ACWI ex-US ETF (CWI) Historical Volatility

CWI 30-day historical volatility is 14%. This ranks in the 40th percentile of readings over the past year.

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Tracking CWI historical volatility helps you see how much State Street SPDR MSCI ACWI ex-US ETF's stock price has actually moved over past periods, giving you a baseline to judge whether current option premiums are fair, cheap, or expensive. While implied volatility tells you what the market expects, State Street SPDR MSCI ACWI ex-US ETF's HV tells you what really happened. Use our scanner to monitor CWI 30 day historical volatility alongside longer lookback windows and spot the moments when realized and implied diverge.

Historical volatility is the annualized standard deviation of an underlying's past returns, typically measured over rolling windows like 10, 20, 30, or 60 days. The CWI 30 day historical volatility is one of the most widely watched readings because it balances responsiveness with stability. Comparing State Street SPDR MSCI ACWI ex-US ETF's HV to its implied volatility reveals the volatility risk premium — when IV sits well above HV, option sellers tend to have an edge; when HV runs hot relative to IV, buyers may be underpaying for movement.

The State Street SPDR MSCI ACWI ex-US ETF seeks to provide investment results that, before fees and expenses, correspond generally to the total return performance of the MSCI ACWI ex USA Index (the "Index")Seeks to provide access to virtually all developed and emerging market countries outside of the USThe Index provides a broad measure of stock performance covering approximately 85% of the global equity opportunity set outside the USSeeks to provide large and mid cap security exposure using a market-cap weighted index methodology

Sizing a long premium trade, modeling a covered call, or hunting volatility arbitrage all come back to one question: how much has the stock actually moved? Our scanner puts State Street SPDR MSCI ACWI ex-US ETF's historical volatility side-by-side with implied readings across every lookback window, so you can see exactly where CWI HV is running hot, cold, or in line. Make the CWI 30 day historical volatility — and every other window — work for your edge instead of against it.

IV vs HV
Implied Volatility (IV) vs Historical Volatility (HV) over the past month.

As of September 23, 2026

IV - HV Difference
Difference between IV and HV over time. Positive values indicate IV > HV.

As of September 23, 2026

See how volatility has moved over time

Track CWI historical volatility, spot where IV and realized volatility diverge, and find options that are priced in your favor right now.

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