NBIX Options History — September 2025

In September 2025, NBIX traded between $136.60 and $147.34. ATM implied volatility averaged 27.3%, placing in the 12.6% IV rank vs the trailing year. The 30-day expected move averaged 7.6%. IV traded below realized volatility by 0.1% (HV 20d: 27.3%). Max pain ranged from $130.00 to $145.00. Net GEX was positive for 18 of 21 trading days. Term structure was in contango for 21 of 21 days. Put/call ratio averaged 6.65.

Notable Days

  • 2025-09-18: Highest Volume — 2,801 contracts
  • 2025-09-09: Largest IV spike — 32.0% change
  • 2025-09-09: Highest IV Rank — 26.9%
  • 2025-09-16: Largest Expected Move — 9.2%

Monthly Statistics

MetricAvgMinMaxOpenClose
Price$142.61$136.60$147.34$142.24$141.62
Max Pain$135.24$130.00$145.00$130.00$145.00
ATM IV27.3%21.9%35.5%23.9%28.7%
Expected Move7.6%6.3%9.2%6.8%8.2%
HV 20d27.3%20.8%31.6%20.8%31.0%
HV 60d26.4%23.6%28.0%23.6%28.0%
IV Rank12.6%3.8%26.9%7.2%14.1%
IV Percentile28.0%2.8%65.1%9.9%35.7%
Term Structure6.6%0.7%10.0%0.7%8.1%
VWIV27.8%22.9%32.7%28.8%28.2%
Skew 25d1.1%-10.7%9.3%-9.8%1.3%
Skew 10d3.4%-8.2%18.9%1.3%0.3%
Call IV 25d26.0%17.4%31.4%27.6%28.2%
Put IV 25d27.0%15.1%32.8%17.8%29.4%
Bid-Ask Spread %93.9787.1798.6295.7698.62
Gamma HHI0.270.160.840.160.24
Net GEX800.1K-508.6K5.8M649.0K-423.9K
Net DEX-15.1M-31.7M509.7K-18.3M-1.3M
Net VEX-127.8K-141.9K-120.5K-120.5K-131.0K
Div Yield0.0%0.0%0.0%0.0%0.0%
P/C Ratio6.650.0092.731.190.04
Total Volume47242,80159525
Total OI7,370.5246,1459,5906,9947,058

Daily Data (21 trading days)

DatePriceMax PainATM IVExp MoveHV 20dIV RankVWIVSkew 25dTerm StrGEXDEXVEXP/CSpread %Call WallPut WallCall VolPut VolCall OIPut OI
2025-09-02$142.24$130.0023.9%6.8%20.8%7.2%28.8%-9.8%0.7%649.0K-18.3M-120.5K1.1995.76N/AN/A27323,9013,093
2025-09-03$136.60$130.0021.9%6.3%26.4%3.8%22.9%0.9%3.4%312.9K-10.8M-122.3K1.7695.13N/AN/A661163,9113,122
2025-09-04$139.75$130.0023.1%6.4%27.1%5.8%0.0%9.3%9.1%536.1K-13.0M-126.8K0.8797.23N/AN/A46403,9283,235
2025-09-05$144.05$130.0025.1%6.9%27.3%9.2%24.2%9.2%8.7%837.2K-21.8M-123.0K1.9796.14N/AN/A1523003,9683,275
2025-09-08$143.94$130.0026.9%6.7%26.8%12.3%24.2%2.0%6.2%753.6K-19.5M-130.7K0.8694.08N/AN/A22193,9913,575
2025-09-09$143.69$135.0035.5%7.6%26.8%26.9%27.9%4.9%4.8%680.1K-17.5M-133.1K0.3590.79N/AN/A2694,0023,593
2025-09-10$141.17$135.0025.7%7.4%25.6%10.2%26.8%4.5%7.0%702.9K-15.4M-129.7K1.5090.50N/AN/A464,0033,602
2025-09-11$143.34$135.0023.4%6.7%25.3%6.4%25.6%4.4%8.7%803.5K-16.5M-129.0K0.3392.42N/AN/A314,0053,607
2025-09-12$142.21$135.0026.7%7.6%25.7%11.9%27.5%1.6%6.1%728.3K-16.6M-126.3K0.0093.60N/AN/A2703,9663,608
2025-09-15$140.58$135.0025.0%7.2%26.1%9.1%32.7%2.6%8.6%567.4K-13.4M-126.3K0.0197.66N/AN/A59633,9813,608
2025-09-16$139.91$135.0032.3%9.2%26.2%21.3%31.9%0.9%3.2%920.3K-14.9M-129.3K0.0595.39N/AN/A681314,4053,609
2025-09-17$142.99$135.0031.9%9.1%27.0%20.7%31.2%1.5%3.8%1.6M-24.1M-127.7K0.0193.27N/AN/A7114,8513,634
2025-09-18$145.55$135.0031.8%9.1%27.4%20.5%30.8%-2.8%3.6%1.4M-29.3M-122.9K0.0388.43N/AN/A2,728734,7373,635
2025-09-19$144.30$135.0025.8%7.4%27.6%10.4%25.9%1.8%10.0%5.8M-31.7M-123.4K0.0188.73N/AN/A2,513165,9233,667
2025-09-22$146.95$135.0026.8%7.7%28.1%12.0%26.4%0.1%7.5%515.0K-14.8M-125.1K0.3887.17N/AN/A134513,0123,133
2025-09-23$146.75$135.0026.7%7.7%27.6%11.9%25.6%-10.7%7.4%520.3K-14.4M-127.6K0.0094.65N/AN/A1103,0813,182
2025-09-24$147.34$135.0026.8%7.7%26.8%12.0%29.9%-8.0%7.5%529.7K-15.3M-124.5K0.2295.52N/AN/A923,0823,182
2025-09-25$141.10$135.0028.6%8.2%31.4%13.9%29.7%6.5%8.1%309.3K-8.4M-129.3K92.7392.10N/AN/A111,0203,0903,183
2025-09-26$141.17$145.0028.1%8.1%31.4%12.9%26.1%1.5%6.0%-508.6K509.7K-141.9K36.5098.16N/AN/A145113,0924,199
2025-09-29$139.59$145.0028.2%8.1%31.6%13.1%29.0%0.6%9.5%-378.7K-326.7K-134.3K0.8898.08N/AN/A873,0923,960
2025-09-30$141.62$145.0028.7%8.2%31.0%14.1%28.2%1.3%8.1%-423.9K-1.3M-131.0K0.0498.62N/AN/A507183,0973,961