FGEN (FibroGen, Inc)
Historical IV Rank & Volatility Regime
IV Rank measures where FGEN'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 FGEN 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.
FGEN IV Rank Summary
Current
16%
Compressed — premium buying regime
30-Day Avg
14%
60-Day Avg
15%
90-Day Avg
32%
90-Day Low
5%
90-Day High
91%
IV Rank is bounded 0%–100% by construction. Sustained levels above 75% historically
precede mean reversion in FGEN'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.
FGEN IV Rank — Last 90 Trading Days
| Date | IV Rank | Avg IV |
|---|---|---|
| 20260609 | 16% | 4.6% |
| 20260608 | 16% | 4.6% |
| 20260605 | 13% | 4.0% |
| 20260604 | 16% | 4.5% |
| 20260603 | 15% | 4.4% |
| 20260602 | 15% | 4.4% |
| 20260601 | 15% | 4.4% |
| 20260529 | 14% | 4.3% |
| 20260528 | 15% | 4.3% |
| 20260527 | 14% | 4.3% |
| 20260526 | 15% | 4.3% |
| 20260502 | 13% | 4.1% |
| 20260501 | 13% | 4.1% |
| 20260430 | 13% | 4.1% |
| 20260429 | 13% | 4.1% |
| 20260428 | 13% | 4.1% |
| 20260427 | 13% | 4.1% |
| 20260424 | 13% | 4.0% |
| 20260423 | 13% | 4.0% |
| 20260422 | 13% | 4.0% |
| 20260421 | 13% | 4.0% |
| 20260420 | 13% | 4.0% |
| 20260417 | 13% | 4.0% |
| 20260416 | 13% | 4.0% |
| 20260415 | 13% | 4.0% |
| 20260414 | 13% | 4.0% |
| 20260413 | 13% | 4.0% |
| 20260410 | 12% | 3.9% |
| 20260409 | 12% | 3.9% |
| 20260408 | 12% | 3.9% |
| 20260407 | 12% | 3.9% |
| 20260406 | 12% | 3.9% |
| 20260402 | 12% | 3.9% |
| 20260401 | 12% | 4.0% |
| 20260331 | 13% | 4.0% |
| 20260330 | 13% | 4.0% |
| 20260327 | 13% | 4.0% |
| 20260326 | 12% | 3.9% |
| 20260325 | 12% | 3.9% |
| 20260324 | 12% | 3.8% |
| 20260323 | 12% | 3.8% |
| 20260320 | 12% | 3.8% |
| 20260319 | 5% | 2.8% |
| 20260318 | 12% | 3.8% |
| 20260317 | 12% | 3.9% |
| 20260316 | 21% | 3.8% |
| 20260313 | 21% | 3.7% |
| 20260312 | 21% | 3.8% |
| 20260311 | 21% | 3.8% |
| 20260310 | 19% | 3.8% |
| 20260309 | 19% | 3.8% |
| 20260308 | 19% | 3.8% |
| 20260306 | 19% | 3.8% |
| 20260305 | 19% | 3.8% |
| 20260304 | 19% | 3.7% |
| 20260303 | 19% | 3.8% |
| 20260108 | 10% | 1.9% |
| 20260107 | 19% | 3.8% |
| 20260106 | 27% | 5.5% |
| 20260105 | 35% | 7.0% |
| 20260102 | 87% | 17.4% |
| 20251231 | 84% | 16.7% |
| 20251230 | 81% | 16.2% |
| 20251229 | 77% | 15.4% |
| 20251226 | 73% | 14.7% |
| 20251224 | 70% | 13.9% |
| 20251223 | 68% | 13.6% |
| 20251222 | 67% | 13.4% |
| 20251219 | 63% | 12.7% |
| 20251218 | 61% | 12.1% |
| 20251217 | 59% | 11.8% |
| 20251216 | 59% | 11.7% |
| 20251215 | 59% | 11.8% |
| 20251212 | 55% | 11.1% |
| 20251211 | 55% | 11.0% |
| 20251210 | 55% | 11.1% |
| 20251209 | 54% | 10.9% |
| 20251208 | 54% | 10.7% |
| 20251205 | 52% | 10.4% |
| 20251204 | 51% | 10.2% |
| 20251203 | 58% | 11.5% |
| 20251202 | 91% | 18.1% |
| 20251201 | 85% | 16.9% |
| 20251128 | 79% | 15.8% |
| 20251126 | 79% | 15.8% |
| 20251125 | 77% | 15.4% |
| 20251124 | 75% | 15.1% |
| 20251121 | 71% | 14.1% |
| 20251120 | 70% | 14.0% |
| 20251119 | 69% | 13.8% |