ETNB (89bio, Inc. Common Stock)
Historical IV Rank & Volatility Regime
IV Rank measures where ETNB's current 30-day implied volatility sits in its trailing 90-day distribution (0% = lowest in 90 days, 100% = highest). It's the most reliable signal for whether options on ETNB are priced rich or cheap relative to its own recent regime.
Market data may be delayed, incomplete, or inaccurate. Not a recommendation to buy, sell, or hold any security. Verify quotes with your broker before trading. See Terms §17.
ETNB IV Rank Summary
Current
37%
Subdued — neutral to long-vol
30-Day Avg
51%
60-Day Avg
44%
90-Day Avg
40%
90-Day Low
2%
90-Day High
100%
IV Rank is bounded 0%–100% by construction. Sustained levels above 75% historically
precede mean reversion in ETNB's implied vol; sustained sub-25% readings
often coincide with low-realized regimes ahead of catalyst events. See the
Vol Arb Screener for symbols where current IV
rank diverges most from realized volatility.
ETNB IV Rank — Last 90 Trading Days
| Date | IV Rank | Avg IV |
|---|---|---|
| 20251031 | 37% | 1.9% |
| 20251030 | 35% | 1.8% |
| 20251029 | 44% | 2.0% |
| 20251028 | 65% | 2.5% |
| 20251027 | 60% | 2.4% |
| 20251024 | 48% | 2.1% |
| 20251023 | 28% | 1.7% |
| 20251022 | 50% | 2.1% |
| 20251021 | 40% | 2.0% |
| 20251020 | 39% | 1.9% |
| 20251017 | 23% | 1.6% |
| 20251016 | 26% | 1.6% |
| 20251015 | 26% | 1.7% |
| 20251014 | 20% | 1.5% |
| 20251013 | 13% | 1.4% |
| 20251010 | 20% | 1.5% |
| 20251009 | 10% | 1.3% |
| 20251008 | 7% | 1.3% |
| 20251007 | 8% | 1.3% |
| 20251006 | 3% | 1.2% |
| 20251003 | 76% | 2.7% |
| 20251002 | 92% | 3.0% |
| 20251001 | 100% | 3.2% |
| 20250930 | 92% | 2.7% |
| 20250929 | 100% | 2.9% |
| 20250926 | 78% | 2.4% |
| 20250925 | 100% | 2.8% |
| 20250924 | 100% | 2.8% |
| 20250923 | 91% | 2.5% |
| 20250922 | 93% | 2.6% |
| 20250919 | 74% | 2.3% |
| 20250918 | 100% | 2.7% |
| 20250917 | 57% | 1.8% |
| 20250916 | 20% | 1.4% |
| 20250915 | 6% | 1.2% |
| 20250912 | 33% | 1.5% |
| 20250911 | 20% | 1.3% |
| 20250910 | 8% | 1.2% |
| 20250909 | 2% | 1.1% |
| 20250908 | 16% | 1.4% |
| 20250905 | 3% | 1.1% |
| 20250904 | 18% | 1.4% |
| 20250903 | 55% | 2.1% |
| 20250902 | 57% | 2.1% |
| 20250829 | 54% | 2.1% |
| 20250828 | 61% | 2.2% |
| 20250827 | 52% | 2.0% |
| 20250826 | 42% | 1.9% |
| 20250825 | 47% | 1.9% |
| 20250822 | 53% | 2.1% |
| 20250821 | 36% | 1.7% |
| 20250820 | 34% | 1.7% |
| 20250819 | 40% | 1.8% |
| 20250818 | 28% | 1.6% |
| 20250815 | 30% | 1.6% |
| 20250814 | 52% | 2.0% |
| 20250813 | 22% | 1.5% |
| 20250812 | 28% | 1.6% |
| 20250811 | 36% | 1.7% |
| 20250808 | 27% | 1.6% |
| 20250807 | 25% | 1.5% |
| 20250806 | 14% | 1.3% |
| 20250805 | 33% | 1.7% |
| 20250804 | 13% | 1.3% |
| 20250801 | 72% | 2.4% |
| 20250731 | 42% | 1.9% |
| 20250730 | 48% | 2.0% |
| 20250729 | 53% | 2.1% |
| 20250728 | 53% | 2.0% |
| 20250725 | 38% | 1.8% |
| 20250724 | 41% | 1.8% |
| 20250723 | 27% | 1.6% |
| 20250722 | 36% | 1.7% |
| 20250721 | 31% | 1.7% |
| 20250718 | 33% | 1.7% |
| 20250717 | 23% | 1.5% |
| 20250716 | 29% | 1.6% |
| 20250715 | 23% | 1.5% |
| 20250714 | 22% | 1.5% |
| 20250711 | 27% | 1.6% |
| 20250710 | 17% | 1.4% |
| 20250709 | 21% | 1.5% |
| 20250708 | 28% | 1.6% |
| 20250707 | 25% | 1.5% |
| 20250703 | 6% | 1.2% |
| 20250702 | 32% | 1.7% |
| 20250701 | 54% | 2.1% |
| 20250630 | 64% | 2.3% |
| 20250627 | 52% | 2.0% |
| 20250626 | 35% | 1.7% |