Roundhill COST WeeklyPay ETF (COSW) Historical Volatility

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

COSW aims to combine weekly income and modest enhanced exposure to the weekly price performance of COST stock. The fund invests in total return swap agreements and COST common stock that in aggregate will return approximately 120% of the calendar week return of COST shares. Aside from providing 1.2x leveraged single-stock exposure, the fund will make weekly distribution payments to shareholders. It also invests in short-term US Treasurys and money market funds for collateral. Unlike traditional ETFs, COSW introduces added volatility due to its lack of diversification and use of leverage. Investors should note that an investment in the fund is not an investment in the underlying stock.

The strategy is subject to all potential losses if COST shares depreciate. The fund may lose all of its value if COST's share price decreases by 83.33% over the course of a week. The fund is a short-term tactical tool, meaning it is designed for investors with a high-risk tolerance and a short-term outlook.

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 Roundhill COST WeeklyPay ETF's historical volatility side-by-side with implied readings across every lookback window, so you can see exactly where COSW HV is running hot, cold, or in line. Make the COSW 30 day historical volatility — and every other window — work for your edge instead of against it.