CALX Options History — December 2025

In December 2025, CALX traded between $52.84 and $56.15. ATM implied volatility averaged 36.6%, placing in the 22.0% IV rank vs the trailing year. The 30-day expected move averaged 10.5%. IV traded above realized volatility by 5.7% (HV 20d: 30.8%). Max pain ranged from $47.50 to $50.00. Net GEX was positive for 22 of 22 trading days. Term structure was in contango for 19 of 22 days. Put/call ratio averaged 1.37.

Notable Days

  • 2025-12-15: Highest Volume — 358 contracts
  • 2025-12-30: Largest IV drop — 40.3% change
  • 2025-12-29: Highest IV Rank — 44.3%
  • 2025-12-29: Largest Expected Move — 15.0%

Monthly Statistics

MetricAvgMinMaxOpenClose
Price$54.44$52.84$56.15$54.97$52.84
Max Pain$49.66$47.50$50.00$47.50$50.00
ATM IV36.6%30.4%52.2%46.3%36.8%
Expected Move10.5%8.7%15.0%13.3%10.6%
HV 20d30.8%24.6%40.5%40.5%24.7%
HV 60d37.1%36.7%37.5%37.1%37.3%
IV Rank22.0%13.3%44.3%35.9%22.4%
IV Percentile38.6%10.7%83.3%75.0%44.4%
Term Structure6.4%-13.8%30.7%4.1%11.7%
VWIV35.9%24.8%53.8%43.0%45.5%
Skew 25d4.5%-5.8%17.6%1.0%-2.7%
Skew 10d3.6%-11.9%21.8%-3.3%3.2%
Call IV 25d34.0%24.3%46.3%46.3%34.7%
Put IV 25d38.5%30.3%47.3%47.3%32.1%
Bid-Ask Spread %104.2894.13112.88108.25106.61
Gamma HHI0.170.130.210.150.19
Net GEX103.9K74.0K145.4K75.5K103.4K
Net DEX-2.2M-3.1M-1.5M-2.1M-1.5M
Net VEX-7.1K-7.9K-5.4K-7.0K-5.4K
Div Yield0.0%0.0%0.0%0.0%0.0%
P/C Ratio1.370.007.757.750.23
Total Volume50.31803583516
Total OI1,323.9091,0501,6101,0501,344

Daily Data (22 trading days)

DatePriceMax PainATM IVExp MoveHV 20dIV RankVWIVSkew 25dTerm StrGEXDEXVEXP/CSpread %Call VolPut VolCall OIPut OI
2025-12-01$54.97$47.5046.3%13.3%40.5%35.9%43.0%1.0%4.1%75.5K-2.1M-7.0K7.75108.25431912138
2025-12-02$54.55$47.5040.3%11.5%39.4%27.3%0.0%3.6%0.0%74.0K-2.1M-7.0K0.00104.40510911168
2025-12-03$54.32$47.5041.9%12.0%39.3%29.7%53.8%1.9%-4.9%81.3K-2.1M-7.4K0.00109.0020961168
2025-12-04$53.60$50.0039.6%12.3%35.3%26.5%35.5%6.7%3.5%80.1K-2.0M-6.9K0.17100.7061961168
2025-12-05$53.81$50.0036.8%10.7%33.1%22.3%31.5%7.0%2.0%86.3K-2.0M-6.9K4.00103.00312967169
2025-12-08$54.92$50.0040.0%10.8%34.7%26.9%36.9%2.6%3.4%81.9K-2.2M-6.7K0.1899.4914326970172
2025-12-09$55.64$50.0035.1%10.2%35.5%20.0%37.0%7.2%5.0%91.0K-2.5M-7.6K0.5596.9529161,089196
2025-12-10$56.15$50.0032.4%9.3%35.6%16.1%36.9%11.8%6.1%97.4K-2.7M-7.9K0.32106.272581,112205
2025-12-11$56.03$50.0033.2%9.5%34.6%17.2%35.5%2.3%10.2%97.7K-2.7M-7.8K0.3098.6877231,133214
2025-12-12$53.86$50.0032.8%9.4%30.4%16.6%32.7%-3.1%9.4%102.7K-2.2M-7.6K1.8294.1317311,189238
2025-12-15$54.36$50.0030.6%8.8%30.7%13.6%25.2%1.5%8.5%100.9K-2.3M-7.6K0.0898.30331271,203252
2025-12-16$54.16$50.0034.1%9.8%29.1%18.6%36.0%-5.2%6.3%113.6K-2.3M-7.4K0.1399.2280101,270257
2025-12-17$52.91$50.0037.4%10.7%27.1%23.3%34.9%7.6%1.8%136.6K-2.2M-7.4K7.00102.59171,344265
2025-12-18$53.69$50.0035.0%10.0%27.7%19.8%35.5%4.7%-0.4%145.4K-2.5M-7.4K0.53105.7219101,345265
2025-12-19$54.88$50.0032.2%9.2%27.0%15.8%24.8%17.6%8.4%143.3K-3.1M-7.1K3.09103.9111341,355247
2025-12-22$55.70$50.0030.4%8.7%27.2%13.3%28.6%4.4%11.9%120.4K-2.4M-6.7K0.33106.88931,111194
2025-12-23$55.55$50.0034.5%9.9%27.2%19.2%32.8%17.3%7.9%117.2K-2.5M-7.2K0.25108.97821,118197
2025-12-24$54.63$50.0032.7%9.4%24.6%16.5%0.0%1.4%18.1%112.8K-2.4M-7.2K0.00109.61001,126199
2025-12-26$54.41$50.0038.8%11.1%24.6%25.2%0.0%12.6%11.6%114.3K-2.2M-6.8K0.00112.88001,126199
2025-12-29$53.52$50.0052.2%15.0%24.7%44.3%46.1%-5.8%-13.8%104.3K-1.8M-6.6K0.12110.532531,126200
2025-12-30$53.11$50.0031.2%8.9%24.8%14.3%30.8%5.3%30.7%105.1K-1.6M-5.6K0.50108.16421,146196
2025-12-31$52.84$50.0036.8%10.6%24.7%22.4%45.5%-2.7%11.7%103.4K-1.5M-5.4K0.23106.611331,148196