CSGS Options History — December 2025

In December 2025, CSGS traded between $76.24 and $78.31. ATM implied volatility averaged 21.7%, placing in the 12.8% IV rank vs the trailing year. The 30-day expected move averaged 5.9%. IV traded above realized volatility by 14.8% (HV 20d: 6.9%). Max pain ranged from $70.00 to $80.00. Net GEX was positive for 22 of 22 trading days. Term structure was in contango for 2 of 22 days. Put/call ratio averaged 0.44.

Notable Days

  • 2025-12-24: Highest Volume — 66 contracts
  • 2025-12-03: Largest IV spike — 214.7% change
  • 2025-12-05: Highest IV Rank — 27.6%
  • 2025-12-03: Largest Expected Move — 10.7%

Monthly Statistics

MetricAvgMinMaxOpenClose
Price$77.05$76.24$78.31$78.31$76.73
Max Pain$78.57$70.00$80.00$70.00$80.00
ATM IV21.7%11.6%39.6%11.6%20.4%
Expected Move5.9%3.3%10.7%3.3%5.8%
HV 20d6.9%4.9%7.8%5.0%6.9%
HV 60d30.8%29.7%32.0%31.9%29.7%
IV Rank12.8%4.4%27.6%4.4%11.7%
IV Percentile12.3%2.0%44.8%2.0%11.1%
Term Structure-6.6%-11.0%15.5%2.8%-11.0%
VWIV16.0%7.1%19.9%7.1%19.9%
Skew 25d5.0%-26.5%28.4%-0.8%0.6%
Skew 10d12.6%-25.8%67.1%-25.8%32.1%
Call IV 25d19.4%8.6%45.3%12.9%14.3%
Put IV 25d24.4%11.5%50.1%12.0%14.9%
Bid-Ask Spread %106.0299.88118.70118.7099.88
Gamma HHI0.790.500.960.880.51
Net GEX151.6K60.9K289.5K60.9K283.0K
Net DEX-2.1M-3.0M-1.6M-1.7M-2.7M
Net VEX-9.0K-11.7K-7.1K-7.6K-11.4K
Div Yield0.0%0.0%0.0%0.0%0.0%
P/C Ratio0.440.002.000.300.00
Total Volume16.68206600
Total OI607.864471809471809

Daily Data (22 trading days)

DatePriceMax PainATM IVExp MoveHV 20dIV RankVWIVSkew 25dTerm StrGEXDEXVEXP/CSpread %Call WallPut WallCall VolPut VolCall OIPut OI
2025-12-01$78.31$70.0011.6%3.3%5.0%4.4%0.0%-0.8%2.8%60.9K-1.7M-7.6K0.00118.70N/AN/A0037893
2025-12-02$78.22$70.0011.8%3.4%4.9%4.6%0.0%1.9%15.5%68.3K-1.9M-7.1K0.00112.89N/AN/A0037893
2025-12-03$77.44$70.0037.2%10.7%5.9%25.6%7.1%15.4%-10.4%76.1K-1.7M-7.3K0.00112.94N/AN/A0437893
2025-12-04$77.30$0.0031.1%6.6%5.8%20.6%18.7%0.7%-6.5%78.6K-1.7M-7.3K0.30105.78N/AN/A30937896
2025-12-05$77.13$80.0039.6%6.7%5.8%27.6%18.5%0.6%-6.4%84.4K-1.8M-8.1K2.00105.12N/AN/A1240899
2025-12-08$76.24$80.0024.4%7.0%7.0%15.0%0.0%21.3%-9.2%153.3K-1.8M-7.2K0.81104.17N/AN/A312540998
2025-12-09$76.36$80.0024.9%7.0%7.0%15.5%0.0%21.1%-9.1%142.7K-1.7M-7.5K0.00104.41N/AN/A07424124
2025-12-10$76.42$80.0014.8%4.2%6.4%7.0%19.9%8.1%-9.1%97.3K-1.6M-8.1K0.30104.46N/AN/A103424127
2025-12-11$77.22$80.0014.4%4.1%7.7%6.8%0.0%4.0%-6.6%94.1K-1.7M-9.0K0.00106.10N/AN/A02454130
2025-12-12$77.06$80.0025.3%7.2%7.7%15.7%0.0%0.6%-7.4%120.4K-2.0M-8.5K0.00105.00N/AN/A250454131
2025-12-15$77.01$80.0015.5%4.4%7.7%7.6%0.0%4.5%-9.0%139.6K-2.2M-8.9K0.00105.82N/AN/A220479131
2025-12-16$77.14$80.0015.5%4.4%7.7%7.6%0.0%3.3%-9.0%143.8K-2.3M-8.9K0.00105.10N/AN/A00501131
2025-12-17$76.91$80.0027.7%7.9%7.7%17.7%0.0%0.5%-10.6%138.4K-2.2M-9.5K0.00104.82N/AN/A10501131
2025-12-18$76.97$80.0016.2%4.6%7.8%8.2%0.0%6.4%-7.4%115.3K-2.1M-9.6K1.33104.60N/AN/A68501131
2025-12-19$76.97$80.0016.6%4.8%7.7%8.6%0.0%14.4%-7.9%136.9K-2.2M-9.3K0.06103.48N/AN/A362507135
2025-12-22$77.06$80.0017.2%4.9%7.7%9.1%0.0%3.9%-8.8%135.8K-2.1M-10.0K0.00105.56N/AN/A00498124
2025-12-23$76.95$80.0013.8%4.0%7.6%6.2%0.0%-26.5%-6.7%186.5K-2.3M-9.1K0.00105.88N/AN/A500498104
2025-12-24$77.02$80.0029.9%8.6%7.4%19.5%0.0%28.4%-6.9%223.5K-2.5M-9.5K0.00105.81N/AN/A660548104
2025-12-26$76.99$80.0031.4%9.0%7.0%20.8%0.0%0.8%-2.1%289.5K-2.8M-11.4K0.00105.91N/AN/A02674109
2025-12-29$76.91$80.0019.0%5.4%7.0%10.5%0.0%0.3%-9.3%287.0K-2.8M-11.7K0.00105.69N/AN/A020674110
2025-12-30$76.78$80.0019.7%5.6%6.9%11.1%0.0%1.6%-10.2%279.4K-3.0M-10.9K0.00100.41N/AN/A05674130
2025-12-31$76.73$80.0020.4%5.8%6.9%11.7%0.0%0.6%-11.0%283.0K-2.7M-11.4K0.0099.88N/AN/A00674135