CALX Options History — May 2025

In May 2025, CALX traded between $41.53 and $47.30. ATM implied volatility averaged 33.5%, placing in the 17.3% IV rank vs the trailing year. The 30-day expected move averaged 9.4%. IV traded below realized volatility by 11.6% (HV 20d: 45.1%). Max pain ranged from $35.00 to $40.00. Net GEX was positive for 21 of 21 trading days. Term structure was in contango for 14 of 21 days. Put/call ratio averaged 0.23.

Notable Days

  • 2025-05-01: Highest Volume — 512 contracts
  • 2025-05-05: Largest IV spike — 27.5% change
  • 2025-05-06: Highest IV Rank — 24.3%
  • 2025-05-06: Largest Expected Move — 11.0%

Monthly Statistics

MetricAvgMinMaxOpenClose
Price$44.75$41.53$47.30$41.53$46.28
Max Pain$39.29$35.00$40.00$35.00$40.00
ATM IV33.5%26.6%38.6%36.7%28.4%
Expected Move9.4%7.6%11.0%10.5%8.1%
HV 20d45.1%15.0%80.8%80.8%15.8%
HV 60d56.5%55.4%57.2%57.2%55.4%
IV Rank17.3%8.0%24.3%21.6%10.4%
IV Percentile14.4%2.0%33.7%21.4%2.8%
Term Structure0.6%-16.5%8.9%-16.5%4.6%
VWIV32.7%22.7%39.4%36.3%31.3%
Skew 25d3.7%-10.2%14.3%13.2%8.2%
Skew 10d6.2%-13.6%22.3%22.3%3.6%
Call IV 25d28.6%19.8%36.2%27.1%22.4%
Put IV 25d32.3%22.0%42.0%40.2%30.6%
Bid-Ask Spread %82.7156.1098.9456.1086.04
Gamma HHI0.320.210.400.220.39
Net GEX412.3K257.5K520.9K257.5K507.0K
Net DEX-8.7M-11.6M-5.1M-5.1M-8.9M
Net VEX-23.1K-25.2K-16.8K-16.8K-24.3K
Div Yield0.0%0.0%0.0%0.0%0.0%
P/C Ratio0.230.000.620.370.33
Total Volume154.0481351251296
Total OI4,567.193,7215,5103,7214,379

Daily Data (21 trading days)

DatePriceMax PainATM IVExp MoveHV 20dIV RankVWIVSkew 25dTerm StrGEXDEXVEXP/CSpread %Call VolPut VolCall OIPut OI
2025-05-01$41.53$35.0036.7%10.5%80.8%21.6%36.3%13.2%-16.5%257.5K-5.1M-16.8K0.3756.103741382,986735
2025-05-02$41.67$37.5029.9%8.6%73.8%12.4%30.5%14.3%3.6%305.6K-6.0M-19.6K0.0365.03461123,303856
2025-05-05$42.15$37.5038.1%10.7%72.0%23.5%31.5%6.2%-0.6%338.9K-6.4M-20.6K0.3875.6293353,599866
2025-05-06$41.67$37.5038.6%11.0%72.1%24.3%39.4%4.7%8.9%332.2K-6.0M-20.9K0.6272.3639243,656890
2025-05-07$42.23$37.5037.5%10.2%71.0%22.6%38.3%10.4%-0.1%361.1K-6.4M-20.7K0.6284.052011243,689909
2025-05-08$42.69$40.0038.6%10.6%58.6%24.2%31.7%-10.2%-1.4%361.2K-7.2M-22.6K0.0685.83205133,7691,014
2025-05-09$42.99$40.0032.7%7.7%54.0%16.2%22.7%7.1%2.1%402.0K-7.7M-23.0K0.4789.912111003,9271,025
2025-05-12$44.14$40.0036.0%9.3%54.2%20.7%33.0%8.9%-1.4%438.1K-9.1M-23.1K0.2984.102884,0901,118
2025-05-13$44.83$40.0037.2%9.5%54.2%22.3%31.1%-1.9%0.0%437.3K-10.6M-23.9K0.1792.2359104,1231,136
2025-05-14$44.78$40.0035.4%10.1%54.4%19.9%32.7%-4.3%-1.7%450.5K-10.4M-23.8K0.1988.85155304,1761,146
2025-05-15$45.22$40.0026.6%7.6%52.9%8.0%0.0%11.4%0.8%459.7K-11.0M-24.7K0.0198.949714,2391,176
2025-05-16$45.38$40.0033.3%9.5%53.0%17.0%33.7%9.5%0.9%520.9K-11.6M-24.1K0.2490.93157384,3331,177
2025-05-19$46.00$40.0034.2%9.8%50.6%18.3%31.8%12.2%1.7%389.0K-8.1M-24.9K0.2181.4967143,404631
2025-05-20$46.66$40.0027.7%7.9%25.6%9.4%29.5%-7.1%0.3%439.2K-9.2M-24.3K0.3193.282683,429644
2025-05-21$46.91$40.0029.5%8.5%22.3%11.9%32.9%0.9%0.5%422.1K-9.4M-24.8K0.0572.6211063,443645
2025-05-22$46.73$40.0031.7%9.1%19.7%14.8%32.0%-2.2%2.0%423.1K-9.4M-25.1K0.3582.9937133,533648
2025-05-23$46.66$40.0033.1%9.5%15.6%16.8%33.1%-3.5%7.0%408.0K-9.3M-25.2K0.0771.657053,556656
2025-05-27$47.30$40.0033.9%9.7%15.0%17.9%36.5%4.8%-0.4%447.6K-10.2M-23.9K0.0679.8813183,595661
2025-05-28$47.19$40.0033.3%9.6%15.1%17.1%33.5%3.2%1.4%463.5K-10.2M-24.7K0.0694.781713,705669
2025-05-29$46.75$40.0031.1%8.9%16.0%14.1%32.7%-8.9%1.6%493.1K-9.7M-24.3K0.0090.161303,706669
2025-05-30$46.28$40.0028.4%8.1%15.8%10.4%31.3%8.2%4.6%507.0K-8.9M-24.3K0.3386.0472243,710669