First Trust Large Cap Core AlphaDEX Fund
First Trust Large Cap Core AlphaDEX Fund (FEX) Historical Volatility
FEX 30-day historical volatility is 10%. This ranks in the 3th percentile of readings over the past year.
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Tracking FEX historical volatility helps you see how much First Trust Large Cap Core AlphaDEX Fund'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, First Trust Large Cap Core AlphaDEX Fund's HV tells you what really happened. Use our scanner to monitor FEX 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 FEX 30 day historical volatility is one of the most widely watched readings because it balances responsiveness with stability. Comparing First Trust Large Cap Core AlphaDEX Fund'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 First Trust Large Cap Core AlphaDEX Fund is an exchange-traded fund. The investment objective of the Fund is to seek investment results that correspond generally to the price and yield, before fees and expenses, of an equity index called the Nasdaq AlphaDEX Large Cap Core Index.
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 First Trust Large Cap Core AlphaDEX Fund's historical volatility side-by-side with implied readings across every lookback window, so you can see exactly where FEX HV is running hot, cold, or in line. Make the FEX 30 day historical volatility — and every other window — work for your edge instead of against it.
As of September 17, 2026
As of September 17, 2026
See how volatility has moved over time
Track FEX historical volatility, spot where IV and realized volatility diverge, and find options that are priced in your favor right now.
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