Tracking MDYG historical volatility helps you see how much State Street SPDR S&P 400 TM Mid Cap Growth 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 S&P 400 TM Mid Cap Growth ETF's HV tells you what really happened. Use our scanner to monitor MDYG 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 MDYG 30 day historical volatility is one of the most widely watched readings because it balances responsiveness with stability. Comparing State Street SPDR S&P 400 TM Mid Cap Growth 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 S&P 400 Mid Cap Growth ETF seeks to provide investment results that, before fees and expenses, correspond generally to the total return performance of the S&P MidCap 400 Growth Index (the "Index")The Index contains stocks that exhibit the strongest growth characteristics based on: sales growth, earnings change to price ratio, and momentum
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 S&P 400 TM Mid Cap Growth ETF's historical volatility side-by-side with implied readings across every lookback window, so you can see exactly where MDYG HV is running hot, cold, or in line. Make the MDYG 30 day historical volatility — and every other window — work for your edge instead of against it.
