CIGI Options History — September 2025

In September 2025, CIGI traded between $156.21 and $167.72. ATM implied volatility averaged 19.6%, placing in the 13.0% IV rank vs the trailing year. The 30-day expected move averaged 5.5%. IV traded below realized volatility by 0.8% (HV 20d: 20.4%). Max pain ranged from $150.00 to $150.00. Net GEX was positive for 21 of 21 trading days. Term structure was in contango for 19 of 21 days. Put/call ratio averaged 0.42.

Notable Days

  • 2025-09-02: Highest Volume — 21 contracts
  • 2025-09-10: Largest IV drop — 29.2% change
  • 2025-09-09: Highest IV Rank — 22.7%
  • 2025-09-02: Largest Expected Move — 6.2%

Monthly Statistics

MetricAvgMinMaxOpenClose
Price$163.20$156.21$167.72$161.63$156.50
Max Pain$150.00$150.00$150.00$150.00$150.00
ATM IV19.6%17.0%24.3%21.7%21.3%
Expected Move5.5%4.9%6.2%6.2%6.1%
HV 20d20.4%16.0%23.2%22.5%17.6%
HV 60d25.6%24.5%26.6%26.1%24.9%
IV Rank13.0%7.6%22.7%17.4%16.5%
IV Percentile12.7%4.0%37.7%19.4%19.8%
Term Structure6.9%-4.1%12.0%-4.1%12.0%
VWIV20.6%16.6%26.7%22.3%26.7%
Skew 25d1.9%-5.2%6.5%-1.6%-1.7%
Skew 10d-0.3%-12.7%7.7%-5.4%1.6%
Call IV 25d22.1%18.5%29.9%22.5%29.9%
Put IV 25d23.9%20.6%28.2%20.8%28.2%
Bid-Ask Spread %107.30101.23112.63110.02109.02
Gamma HHI0.500.390.780.440.78
Net GEX360.1K260.2K417.6K374.8K285.6K
Net DEX-7.6M-8.9M-5.5M-7.5M-5.5M
Net VEX-13.2K-16.1K-11.6K-15.6K-12.2K
Div Yield0.0%0.0%0.0%0.0%0.0%
P/C Ratio0.420.001.000.051.00
Total Volume3.238021212
Total OI801.952748841827749

Daily Data (21 trading days)

DatePriceMax PainATM IVExp MoveHV 20dIV RankVWIVSkew 25dTerm StrGEXDEXVEXP/CSpread %Call WallPut WallCall VolPut VolCall OIPut OI
2025-09-02$161.63$150.0021.7%6.2%22.5%17.4%22.3%-1.6%-4.1%374.8K-7.5M-15.6K0.05110.02N/AN/A20180621
2025-09-03$160.57$150.0021.3%6.1%21.3%16.6%0.0%0.6%-1.7%375.0K-7.3M-15.8K1.00111.27N/AN/A1180122
2025-09-04$165.01$150.0018.7%5.0%23.2%11.1%0.0%4.6%6.9%381.5K-8.0M-16.1K0.00107.21N/AN/A0080223
2025-09-05$166.20$150.0019.5%5.3%23.1%12.8%0.0%4.0%6.6%407.7K-8.6M-14.9K0.00104.25N/AN/A1080223
2025-09-08$166.02$150.0023.6%5.4%23.1%21.3%16.6%6.5%5.7%417.6K-8.9M-14.4K0.33103.69N/AN/A3180323
2025-09-09$165.95$150.0024.3%5.4%22.7%22.7%0.0%4.5%7.2%403.4K-8.8M-13.9K0.00101.23N/AN/A0080424
2025-09-10$165.42$150.0017.2%4.9%21.7%8.1%0.0%5.1%8.1%392.0K-8.4M-13.1K0.00105.91N/AN/A0080424
2025-09-11$167.72$150.0017.0%4.9%21.0%7.6%18.9%1.3%4.9%402.4K-8.9M-13.9K1.00104.99N/AN/A2280424
2025-09-12$167.13$150.0018.8%5.4%20.9%11.4%0.0%3.6%9.6%400.9K-8.8M-12.9K0.33102.90N/AN/A3180626
2025-09-15$166.75$150.0019.6%5.6%20.8%12.9%0.0%6.2%4.9%407.8K-8.8M-12.2K0.00108.83N/AN/A0080426
2025-09-16$165.76$150.0019.4%5.6%20.9%12.6%0.0%4.5%6.9%387.8K-8.1M-13.6K0.00104.38N/AN/A0080426
2025-09-17$165.38$150.0018.7%5.4%20.8%11.1%0.0%4.4%8.9%389.3K-8.3M-12.2K0.00104.46N/AN/A0080426
2025-09-18$166.13$150.0019.1%5.5%20.8%11.9%20.3%1.1%9.1%382.4K-8.4M-12.1K0.08107.83N/AN/A13180426
2025-09-19$164.70$150.0019.5%5.6%20.6%12.9%18.9%4.7%8.0%377.2K-8.0M-11.7K0.00104.55N/AN/A15081427
2025-09-22$163.88$150.0017.9%5.1%16.3%9.6%0.0%0.2%10.0%321.1K-7.3M-11.6K0.00107.65N/AN/A007399
2025-09-23$162.56$150.0017.9%5.1%16.0%9.4%0.0%-0.3%6.9%323.6K-7.1M-11.6K0.00109.90N/AN/A007399
2025-09-24$158.34$150.0017.3%5.0%18.1%8.3%0.0%-3.8%11.0%300.7K-6.2M-12.5K0.00110.42N/AN/A007399
2025-09-25$156.21$150.0020.3%5.8%18.5%14.5%0.0%0.1%5.6%260.2K-5.6M-12.5K0.00112.63N/AN/A007399
2025-09-26$157.05$150.0018.3%5.3%18.8%10.4%0.0%-5.2%11.7%282.9K-5.6M-12.7K0.00111.07N/AN/A017399
2025-09-29$158.30$150.0020.3%5.8%19.1%14.6%0.0%0.1%6.3%287.3K-5.9M-12.0K0.00111.15N/AN/A0073910
2025-09-30$156.50$150.0021.3%6.1%17.6%16.5%26.7%-1.7%12.0%285.6K-5.5M-12.2K1.00109.02N/AN/A1173910