Barrons 400 ETF
Barrons 400 ETF (BFOR) Historical Volatility
BFOR 30-day historical volatility is 9%. This ranks in the 0th percentile of readings over the past year.
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Tracking BFOR historical volatility helps you see how much Barrons 400 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, Barrons 400 ETF's HV tells you what really happened. Use our scanner to monitor BFOR 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 BFOR 30 day historical volatility is one of the most widely watched readings because it balances responsiveness with stability. Comparing Barrons 400 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 Barron's 400 ETF (BFOR) seeks investment results that correspond generally, before fees and expenses, to the performance of the Barron’s 400 Index (B400).
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 Barrons 400 ETF's historical volatility side-by-side with implied readings across every lookback window, so you can see exactly where BFOR HV is running hot, cold, or in line. Make the BFOR 30 day historical volatility — and every other window — work for your edge instead of against it.
As of September 25, 2026
As of September 25, 2026
See how volatility has moved over time
Track BFOR historical volatility, spot where IV and realized volatility diverge, and find options that are priced in your favor right now.
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