Ultragenyx Pharmaceutical Inc. (RARE) Most Active Options
The 25 most actively traded Ultragenyx Pharmaceutical Inc. (RARE) option contracts at the latest daily snapshot, ranked by volume. Each row shows the contract's price, implied volatility, delta, open interest, and how today's volume compares with its own 30-day average — click a contract to analyze it in the OptiView platform.
Data as of Aug 24, 2026, 3:55 PM ET · OPRA data 15 minutes delayed · For information only — not investment advice.
Most Active RARE Contracts
| Contract | Expiration | DTE | Last | IV | IV rank (30d) | Delta | Open interest | Volume | vs 30d avg |
|---|---|---|---|---|---|---|---|---|---|
| RARE $20 call | Dec 18, 2026 | 116d | $9.90 | — | — | — | 60 | 2,604 | — |
| RARE $15 put | Oct 16, 2026 | 53d | $0.90 | 500.0% | 100 | 0.00 | 16,782 | 845 | 6.0× avg |
| RARE $25 put | Nov 20, 2026 | 88d | $6.52 | — | — | — | 148 | 211 | — |
| RARE $12.5 put | Jan 15, 2027 | 144d | $0.65 | — | — | — | 40 | 68 | — |
| RARE $35 call | Oct 16, 2026 | 53d | $3.90 | — | — | — | 3,599 | 65 | — |
| RARE $50 call | Jan 15, 2027 | 144d | $2.15 | — | — | — | 65 | 64 | — |
| RARE $17.5 put | Oct 16, 2026 | 53d | $1.80 | — | — | — | 498 | 61 | — |
| RARE $12.5 put | Dec 18, 2026 | 116d | $0.60 | — | — | — | 26 | 58 | — |
| RARE $50 call | Sep 18, 2026 | 25d | $0.22 | — | — | — | 1,020 | 51 | — |
| RARE $30 call | Sep 18, 2026 | 25d | $2.06 | 126.4% | 43 | 0.39 | 1,491 | 46 | 2.3× avg |
| RARE $25 put | Sep 18, 2026 | 25d | $3.09 | — | — | — | 2,829 | 46 | — |
| RARE $50 call | Oct 16, 2026 | 53d | $1.15 | — | — | — | 5,692 | 42 | — |
| RARE $35 call | Sep 18, 2026 | 25d | $1.18 | — | — | — | 324 | 41 | — |
| RARE $32.5 call | Sep 18, 2026 | 25d | $1.51 | — | — | — | 860 | 34 | — |
| RARE $17.5 put | Nov 20, 2026 | 88d | $2.24 | — | — | — | 31 | 32 | — |
| RARE $25 put | Oct 16, 2026 | 53d | $5.90 | — | — | — | 8,611 | 25 | — |
| RARE $50 call | Feb 19, 2027 | 179d | $2.60 | — | — | — | 14 | 25 | — |
| RARE $30 call | Oct 16, 2026 | 53d | $5.11 | — | — | — | 431 | 21 | — |
| RARE $25 call | Sep 18, 2026 | 25d | $3.76 | — | — | — | 161 | 20 | — |
| RARE $20 put | Sep 18, 2026 | 25d | $0.90 | — | — | — | 384 | 19 | — |
| RARE $22.5 put | Dec 18, 2026 | 116d | $5.20 | — | — | — | 31 | 18 | — |
| RARE $27.5 call | Jan 21, 2028 | 515d | $10.80 | — | — | — | 4 | 18 | — |
| RARE $17.5 put | Sep 18, 2026 | 25d | $0.35 | — | — | — | 837 | 18 | — |
| RARE $22.5 put | Oct 16, 2026 | 53d | $4.37 | — | — | — | 1,044 | 17 | — |
| RARE $27.5 call | Sep 18, 2026 | 25d | $2.70 | — | — | — | 126 | 16 | — |
Ranked by volume at the latest daily snapshot. "vs 30d avg" compares today's volume with the contract's own 30-day average.
The most active RARE contract today is the $20 call expiring in 116 days, with 2,604 contracts traded. Calls dominate the most-active list (13 of the top 25), showing where trading interest concentrates. One of these contracts is running well ahead of the usual daily volume.
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RARE Options FAQ
Which RARE option contract is most active today?
The most traded RARE contract is the $20 call expiring Dec 18, 2026, with 2,604 contracts traded as of Aug 24, 2026.
How does OptiView rank the most active RARE options?
The table lists the 25 RARE contracts with the highest volume at the latest daily snapshot, alongside price, implied volatility, delta, open interest, and each contract's volume versus its own 30-day average.
Methodology. IV rank compares the current 30-day at-the-money implied volatility with its highest and lowest values over the past 52 weeks. Max pain is the strike that minimizes the total payout to option holders at expiration. The call and put walls are the strikes carrying the largest call and put open interest across all expirations. Net gamma exposure (GEX) is measured from the dealer perspective. All statistics are derived from delayed OPRA options data.
Options trading involves significant risk, and losses can exceed your initial investment. Always consult a licensed financial professional before making investment decisions. OptiView does not provide financial advice; all figures on this page are descriptive statistics, not recommendations.