NBIX Options History — August 2025

In August 2025, NBIX traded between $124.01 and $139.11. ATM implied volatility averaged 24.9%, placing in the 7.9% IV rank vs the trailing year. The 30-day expected move averaged 7.0%. IV traded below realized volatility by 4.3% (HV 20d: 29.2%). Max pain ranged from $130.00 to $130.00. Net GEX was positive for 18 of 21 trading days. Term structure was in contango for 17 of 21 days. Put/call ratio averaged 1.71.

Notable Days

  • 2025-08-14: Highest Volume — 628 contracts
  • 2025-08-11: Largest IV spike — 24.0% change
  • 2025-08-11: Highest IV Rank — 18.2%
  • 2025-08-01: Largest Expected Move — 8.0%

Monthly Statistics

MetricAvgMinMaxOpenClose
Price$131.78$124.01$139.11$128.76$139.11
Max Pain$130.00$130.00$130.00$130.00$130.00
ATM IV24.9%21.9%33.0%27.8%22.0%
Expected Move7.0%6.3%8.0%8.0%6.3%
HV 20d29.2%20.5%31.2%31.2%20.5%
HV 60d23.1%22.1%24.6%24.6%23.2%
IV Rank7.9%3.6%18.2%11.1%3.9%
IV Percentile12.2%2.4%47.2%20.6%2.8%
Term Structure2.2%-2.6%8.2%-2.0%0.4%
VWIV24.4%18.0%28.3%28.3%22.4%
Skew 25d1.5%-7.2%8.9%2.7%-7.2%
Skew 10d2.3%-7.8%15.7%1.0%-2.7%
Call IV 25d23.4%17.7%27.7%27.7%21.2%
Put IV 25d24.8%13.9%30.4%30.4%13.9%
Bid-Ask Spread %93.1288.3096.7093.1592.36
Gamma HHI0.180.160.210.180.17
Net GEX173.4K-443.0K536.9K223.9K536.9K
Net DEX-6.5M-14.6M6.1M-4.0M-14.6M
Net VEX-107.8K-124.0K-96.6K-105.9K-122.7K
Div Yield0.0%0.0%0.0%0.0%0.0%
P/C Ratio1.710.0011.770.181.59
Total Volume149.23813628322163
Total OI8,309.4296,09110,8389,4906,869

Daily Data (21 trading days)

DatePriceMax PainATM IVExp MoveHV 20dIV RankVWIVSkew 25dTerm StrGEXDEXVEXP/CSpread %Call WallPut WallCall VolPut VolCall OIPut OI
2025-08-01$128.76$130.0027.8%8.0%31.2%11.1%28.3%2.7%-2.0%223.9K-4.0M-105.9K0.1893.15N/AN/A274485,5693,921
2025-08-04$127.59$130.0025.4%7.3%31.2%7.8%25.4%4.9%5.9%122.0K-1.4M-102.4K2.7792.08N/AN/A13365,8033,950
2025-08-05$128.43$130.0022.7%7.1%31.2%4.1%18.0%8.0%5.6%87.5K-2.3M-100.2K2.0995.04N/AN/A11235,8083,982
2025-08-06$127.74$130.0028.0%7.5%29.1%11.3%25.8%8.9%4.4%126.9K-1.9M-102.2K7.0096.23N/AN/A5355,8104,001
2025-08-07$125.54$130.0027.5%6.9%28.2%10.6%25.3%2.2%5.5%6.5K2.0M-98.5K6.0293.96N/AN/A523135,8114,016
2025-08-08$124.41$130.0026.6%6.6%28.0%9.5%24.4%0.5%8.2%-328.5K3.9M-102.4K1.2691.87N/AN/A19245,8574,276
2025-08-11$124.01$130.0033.0%7.4%27.6%18.2%26.0%-0.2%3.5%-443.0K6.1M-96.8K0.5693.96N/AN/A39225,8704,294
2025-08-12$128.76$130.0025.1%7.4%30.4%7.4%24.1%4.2%3.7%-83.2K-2.7M-97.4K0.0294.85N/AN/A4515,9004,314
2025-08-13$131.33$130.0024.0%6.9%30.8%7.1%24.4%0.2%4.4%183.4K-8.6M-99.4K0.4895.63N/AN/A25125,9194,313
2025-08-14$131.41$130.0025.5%7.3%30.8%9.6%25.3%0.6%-0.7%210.8K-9.0M-96.6K1.0093.93N/AN/A3143145,9264,308
2025-08-15$132.97$130.0025.1%7.2%30.4%9.0%23.5%2.0%1.1%94.7K-8.1M-108.7K0.0091.39N/AN/A31516,2244,614
2025-08-18$133.38$130.0024.0%6.9%30.4%7.2%24.0%1.6%-0.0%240.6K-8.7M-112.0K0.0888.30N/AN/A1213,6272,464
2025-08-19$132.92$130.0021.9%6.3%30.3%3.6%24.3%3.9%0.5%273.0K-9.3M-112.2K0.0091.39N/AN/A8103,6362,464
2025-08-20$133.29$130.0024.3%7.0%30.3%7.7%24.0%-4.1%1.0%202.7K-7.9M-112.0K0.6391.79N/AN/A853,6662,464
2025-08-21$135.11$130.0023.1%6.6%30.3%5.7%23.5%0.9%1.7%351.6K-11.5M-110.5K0.1890.37N/AN/A56103,6712,467
2025-08-22$135.17$130.0026.9%7.7%30.3%12.0%27.4%1.4%-2.6%378.6K-11.4M-108.3K0.0694.04N/AN/A3523,7122,457
2025-08-25$133.80$130.0022.7%6.5%30.2%5.1%27.7%4.6%2.7%298.5K-10.5M-104.9K11.7795.99N/AN/A394593,7132,459
2025-08-26$136.80$130.0023.0%6.6%31.2%5.6%24.1%-0.4%1.5%291.2K-10.6M-123.3K0.2191.44N/AN/A166353,7342,947
2025-08-27$138.37$130.0023.1%6.6%31.1%5.9%21.8%1.6%0.4%428.3K-13.2M-122.5K0.0590.97N/AN/A8643,8202,992
2025-08-28$138.43$130.0022.3%6.4%20.5%4.5%22.6%-5.7%0.5%439.1K-13.2M-124.0K0.0096.70N/AN/A3103,8572,993
2025-08-29$139.11$130.0022.0%6.3%20.5%3.9%22.4%-7.2%0.4%536.9K-14.6M-122.7K1.5992.36N/AN/A631003,8762,993