XRT 波动率 State Street SPDR S&P Retail ETF
IV30Implied volatility interpolated to a constant 30-day horizon from the expirations around it, so different stocks and dates can be compared fairly.22.2%
HV20How much the stock actually moved, measured from daily closing prices over a past window (annualized). Compare with implied volatility to see what the options market priced versus what happened.18.7%
HV6021.2%
IV − HV20价差
+3.5pt
全市场百分位Where this IV30 ranks across all securities we cover today (a cross-sectional comparison, not the stock's own history).
18
自身历史百分位Where today's IV30 sits versus its own daily history — 80 means higher than roughly 80% of recorded observations for that period.
3/60 已记录天数
Cboe delayed options data · 截至 18:40 UTC · 计算方法说明
IV期限结构
各上市到期日的平值隐含波动率，以剩余天数为横轴绘制。
| 到期时间 | DTE | ATM IV | 25Δ 偏斜The IV gap between 25-delta puts and 25-delta calls for one expiration. Positive skew means downside protection is priced richer than upside exposure. | 隐含涨跌幅 |
|---|---|---|---|---|
| Sep 04, 2026 | 1 | 34.8% | -12.2pt | ±2.1% |
| Sep 11, 2026 | 8 | 18.2% | -1.4pt | ±2.3% |
| Sep 18, 2026 | 15 | 24.5% | +2.7pt | ±4.1% |
| Sep 25, 2026 | 22 | 23.3% | -1.1pt | ±4.7% |
| Oct 02, 2026 | 29 | 22.1% | +2.0pt | ±5.1% |
| Oct 09, 2026 | 36 | 22.9% | +1.7pt | ±5.8% |
| Oct 16, 2026 | 43 | 23.7% | +1.0pt | ±6.6% |
| Dec 18, 2026 | 106 | 22.5% | +2.2pt | ±9.7% |
| Jan 15, 2027 | 134 | 25.0% | +1.9pt | ±12.0% |
| Mar 19, 2027 | 197 | 24.1% | +4.6pt | ±14.0% |
| Jan 21, 2028 | 505 | 24.5% | +2.5pt | ±22.2% |
波动率微笑 — Sep 18, 2026
各行权价的隐含波动率。向put倾斜（左侧更高）即为偏斜：下行保护的定价高于上行。
看涨期权看跌期权
隐含与已实现波动率，每日记录
IV30HV20