BITO volatility ProShares Bitcoin ETF
IV30Implied volatility interpolated to a constant 30-day horizon from the expirations around it, so different stocks and dates can be compared fairly.38.8%
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.41.0%
HV6035.9%
IV − HV20 spread
-2.1pt
Universe percentileWhere this IV30 ranks across all securities we cover today (a cross-sectional comparison, not the stock's own history).
63
Own-history percentileWhere today's IV30 sits versus its own daily history — 80 means higher than roughly 80% of recorded observations for that period.
3/60 days recorded
Cboe delayed options data · as of 03:33 UTC · How these are computed
IV term structure
At-the-money implied volatility for each listed expiration, plotted by days remaining.
| Expires | DTE | ATM IV | 25Δ skewThe IV gap between 25-delta puts and 25-delta calls for one expiration. Positive skew means downside protection is priced richer than upside exposure. | Implied move |
|---|---|---|---|---|
| Sep 04, 2026 | 2 | 38.7% | +2.0pt | ±3.0% |
| Sep 11, 2026 | 9 | 35.6% | +1.0pt | ±4.9% |
| Sep 18, 2026 | 16 | 34.2% | -3.1pt | ±6.0% |
| Sep 25, 2026 | 23 | 32.8% | +1.0pt | ±6.9% |
| Sep 30, 2026 | 28 | 46.1% | +8.6pt | ±10.7% |
| Oct 02, 2026 | 30 | 38.8% | -8.5pt | ±9.2% |
| Oct 09, 2026 | 37 | 39.4% | +17.2pt | ±10.3% |
| Oct 16, 2026 | 44 | 39.6% | -0.1pt | ±11.4% |
| Dec 18, 2026 | 107 | 41.3% | -2.8pt | ±17.7% |
| Dec 31, 2026 | 120 | 44.3% | -4.2pt | ±20.0% |
| Jan 15, 2027 | 135 | 42.5% | +2.5pt | ±19.8% |
| Mar 19, 2027 | 198 | 41.8% | -1.1pt | ±23.9% |
| Mar 31, 2027 | 210 | 39.6% | +3.9pt | ±23.3% |
| Jun 30, 2027 | 301 | 55.3% | — | ±37.9% |
| Jan 21, 2028 | 506 | 58.7% | +3.2pt | ±50.4% |
Volatility smile — Sep 18, 2026
Implied volatility by strike. The tilt toward puts (left side higher) is the skew: downside protection priced richer than upside.
callsputs
Implied vs realized, daily record
IV30HV20