ProShares S&P MidCap 400 Div Aristocrats ETF

REGLCBOE · USD
88.60USD0.00 (+0.77%)

ProShares S&P MidCap 400 Div Aristocrats ETF (REGL) Historical Volatility

REGL 30-day historical volatility is 8%. This ranks in the 3th percentile of readings over the past year.

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Tracking REGL historical volatility helps you see how much ProShares S&P MidCap 400 Div Aristocrats 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, ProShares S&P MidCap 400 Div Aristocrats ETF's HV tells you what really happened. Use our scanner to monitor REGL 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 REGL 30 day historical volatility is one of the most widely watched readings because it balances responsiveness with stability. Comparing ProShares S&P MidCap 400 Div Aristocrats 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.

Under normal circumstances, the fund will invest at least 80% of its total assets in component securities of the index. The index contains a minimum of 40 stocks which are equally weighted. No single sector is allowed to comprise more than 30% of the index weight.

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 ProShares S&P MidCap 400 Div Aristocrats ETF's historical volatility side-by-side with implied readings across every lookback window, so you can see exactly where REGL HV is running hot, cold, or in line. Make the REGL 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 25, 2026

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

As of September 25, 2026

See how volatility has moved over time

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

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