CSGS Options History — January 2026

In January 2026, CSGS traded between $76.75 and $79.95. ATM implied volatility averaged 20.9%, placing in the 12.7% IV rank vs the trailing year. The 30-day expected move averaged 4.1%. IV traded above realized volatility by 11.0% (HV 20d: 9.9%). Max pain ranged from $75.00 to $80.00. Net GEX was positive for 20 of 20 trading days. Term structure was in contango for 13 of 20 days. Put/call ratio averaged 5.20.

Notable Days

  • 2026-01-29: Highest Volume — 2,275 contracts
  • 2026-01-15: Largest IV spike — 217.1% change
  • 2026-01-08: Highest IV Rank — 33.4%
  • 2026-01-15: Largest Expected Move — 6.8%

Monthly Statistics

MetricAvgMinMaxOpenClose
Price$79.23$76.75$79.95$76.75$79.87
Max Pain$77.86$75.00$80.00$80.00$80.00
ATM IV20.9%7.4%46.6%21.8%15.5%
Expected Move4.1%1.0%6.8%6.2%4.4%
HV 20d9.9%6.1%11.1%6.1%10.6%
HV 60d25.1%7.9%29.7%29.7%7.9%
IV Rank12.7%1.0%33.4%12.8%9.1%
IV Percentile16.7%0.8%70.6%11.9%8.3%
Term Structure-0.5%-12.6%5.9%-12.6%0.6%
VWIV20.9%4.2%66.4%49.6%23.2%
Skew 25d6.6%-19.6%80.2%0.5%13.1%
Skew 10d7.9%-21.8%111.4%34.3%7.8%
Call IV 25d15.4%5.5%42.6%15.3%6.2%
Put IV 25d22.0%5.7%88.2%15.8%19.3%
Bid-Ask Spread %95.0360.31123.70102.0191.94
Gamma HHI0.710.390.990.510.40
Net GEX294.8K175.6K505.2K282.8K309.1K
Net DEX-3.8M-4.5M-2.7M-2.7M-4.2M
Net VEX-8.8K-16.0K-4.9K-11.3K-16.0K
Div Yield0.0%0.0%0.0%0.0%0.0%
P/C Ratio5.200.0015.020.000.67
Total Volume392.4502,27505
Total OI1,859.658094,2228094,222

Daily Data (20 trading days)

DatePriceMax PainATM IVExp MoveHV 20dIV RankVWIVSkew 25dTerm StrGEXDEXVEXP/CSpread %Call WallPut WallCall VolPut VolCall OIPut OI
2026-01-02$76.75$80.0021.8%6.2%6.1%12.8%0.0%0.5%-12.6%282.8K-2.7M-11.3K0.00102.01N/AN/A00674135
2026-01-05$77.05$0.0043.3%6.4%6.2%30.7%0.0%0.4%-3.3%282.6K-2.9M-11.0K0.00123.02N/AN/A04674135
2026-01-06$77.14$0.0022.9%3.9%6.2%13.7%0.0%1.0%-3.4%280.4K-2.9M-11.1K0.00123.70N/AN/A00674139
2026-01-07$79.41$0.0021.8%1.0%11.0%12.9%0.0%0.1%2.1%362.9K-4.1M-5.7K0.00122.08N/AN/A100674139
2026-01-08$79.33$0.0046.6%5.8%11.1%33.4%0.0%-0.1%-2.3%272.3K-4.1M-6.3K0.00122.03N/AN/A00684139
2026-01-09$79.38$0.0024.4%3.0%11.1%15.0%0.0%-7.0%2.2%311.0K-4.1M-5.9K0.00122.07N/AN/A10684139
2026-01-12$79.51$0.0032.3%3.2%10.6%21.6%49.6%-10.0%2.1%199.8K-4.0M-4.9K0.00118.42N/AN/A01,622683139
2026-01-13$79.54$75.0036.9%3.2%10.5%25.4%40.6%-7.5%5.9%175.6K-3.3M-12.2K12.00113.89N/AN/A112683873
2026-01-14$79.49$75.007.4%2.1%10.5%1.0%11.7%4.4%2.3%207.3K-3.9M-5.1K1.6977.07N/AN/A423716684885
2026-01-15$79.47$75.0023.6%6.8%10.5%14.3%0.0%-19.6%-3.1%314.2K-4.1M-7.5K0.0095.20N/AN/A009041,301
2026-01-16$79.63$75.0013.5%3.9%10.4%7.1%0.0%-16.7%2.0%177.5K-3.2M-14.3K12.5095.24N/AN/A2259041,301
2026-01-20$79.53$75.0014.5%4.2%10.4%8.1%5.1%6.7%1.2%257.4K-3.1M-12.6K2.0891.14N/AN/A25528491,023
2026-01-21$79.72$75.007.6%2.2%10.4%1.3%7.6%80.2%-2.4%282.0K-4.2M-5.1K1.8977.29N/AN/A27518741,054
2026-01-22$79.83$80.0014.9%4.3%10.4%8.5%66.4%35.2%-8.1%359.4K-4.1M-5.2K7.7570.96N/AN/A1601,240858987
2026-01-23$79.77$80.0015.6%4.5%10.4%9.2%4.2%9.4%1.0%271.6K-4.2M-6.3K2.4772.06N/AN/A1102729571,678
2026-01-26$79.86$80.0016.6%4.8%10.4%10.2%4.5%9.8%0.8%321.2K-4.5M-7.5K7.9578.27N/AN/A211671,0181,640
2026-01-27$79.95$80.009.9%2.8%10.4%3.6%12.6%8.7%3.0%361.1K-4.5M-7.1K1.7660.31N/AN/A2253951,0391,741
2026-01-28$79.84$80.0014.8%4.2%10.4%8.4%4.7%12.4%0.7%362.8K-4.4M-12.2K7.0075.60N/AN/A171,1271,873
2026-01-29$79.50$80.0015.1%4.3%10.5%8.7%23.2%10.6%1.0%505.2K-4.2M-9.3K15.0268.30N/AN/A1422,1331,1281,878
2026-01-30$79.87$80.0015.5%4.4%10.6%9.1%0.0%13.1%0.6%309.1K-4.2M-16.0K0.6791.94N/AN/A321,2003,022