EWZ 波动率 iShares MSCI Brazil ETF
IV30Implied volatility interpolated to a constant 30-day horizon from the expirations around it, so different stocks and dates can be compared fairly.33.1%
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.25.3%
HV6022.3%
IV − HV20价差
+7.7pt
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).
51
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.
4/60 已记录天数
Cboe delayed options data · 截至 21:50 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 | 27.8% | -9.4pt | ±1.2% |
| Sep 11, 2026 | 8 | 29.3% | -6.2pt | ±3.5% |
| Sep 18, 2026 | 15 | 29.4% | +7.8pt | ±4.8% |
| Sep 25, 2026 | 22 | 26.7% | -0.9pt | ±5.3% |
| Sep 30, 2026 | 27 | 27.7% | +18.5pt | ±6.0% |
| Oct 02, 2026 | 29 | 31.9% | +12.3pt | ±7.2% |
| Oct 09, 2026 | 36 | 38.2% | -25.2pt | ±9.6% |
| Oct 16, 2026 | 43 | 37.1% | -2.2pt | ±10.2% |
| Oct 23, 2026 | 50 | 38.3% | -16.4pt | ±11.3% |
| Nov 20, 2026 | 78 | 40.9% | -0.5pt | ±15.1% |
| Dec 18, 2026 | 106 | 40.0% | +0.4pt | ±17.4% |
| Dec 31, 2026 | 119 | 38.4% | +4.1pt | ±17.5% |
| Jan 15, 2027 | 134 | 37.5% | +1.0pt | ±18.0% |
| Mar 19, 2027 | 197 | 36.1% | +1.4pt | ±20.8% |
| Mar 31, 2027 | 209 | 35.3% | -1.6pt | ±20.9% |
| Jun 17, 2027 | 287 | 32.1% | -2.6pt | ±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