ARK Space & Defense Innovation ETF

ARKXCBOE · USD
32.12USD0.00 (-0.56%)

ARK Space & Defense Innovation ETF (ARKX) Historical Volatility

ARKX 30-day historical volatility is 21%. This ranks in the 3th percentile of readings over the past year.

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Tracking ARKX historical volatility helps you see how much ARK Space & Defense Innovation 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, ARK Space & Defense Innovation ETF's HV tells you what really happened. Use our scanner to monitor ARKX 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 ARKX 30 day historical volatility is one of the most widely watched readings because it balances responsiveness with stability. Comparing ARK Space & Defense Innovation 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.

ARKX seeks long-term growth of capital by investing primarily in domestic and foreign equity securities of companies engaged in space exploration and defense innovation.

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 ARK Space & Defense Innovation ETF's historical volatility side-by-side with implied readings across every lookback window, so you can see exactly where ARKX HV is running hot, cold, or in line. Make the ARKX 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 18, 2026

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

As of September 18, 2026

See how volatility has moved over time

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

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