CALF Options History — August 2025

In August 2025, CALF traded between $39.34 and $43.41. ATM implied volatility averaged 24.8%, placing in the 18.3% IV rank vs the trailing year. The 30-day expected move averaged 6.4%. IV traded above realized volatility by 5.1% (HV 20d: 19.7%). Max pain ranged from $35.00 to $41.00. Net GEX was positive for 21 of 21 trading days. Term structure was in contango for 8 of 21 days. Put/call ratio averaged 0.18.

Notable Days

  • 2025-08-13: Highest Volume — 145 contracts
  • 2025-08-13: Largest IV drop — 39.0% change
  • 2025-08-11: Highest IV Rank — 44.8%
  • 2025-08-01: Largest Expected Move — 7.2%

Monthly Statistics

MetricAvgMinMaxOpenClose
Price$41.70$39.34$43.41$39.34$43.23
Max Pain$40.41$35.00$41.00$35.00$41.00
ATM IV24.8%19.0%37.1%25.2%21.4%
Expected Move6.4%5.4%7.2%7.2%6.1%
HV 20d19.7%17.6%22.0%19.0%18.4%
HV 60d17.9%16.7%19.4%19.1%17.9%
IV Rank18.3%5.7%44.8%19.1%10.8%
IV Percentile47.0%3.6%93.7%54.8%21.4%
Term Structure-0.1%-2.4%3.4%-0.2%-1.9%
VWIV19.5%14.0%25.3%19.8%15.7%
Skew 25d0.4%-7.7%10.8%10.8%-0.9%
Skew 10d0.3%-6.6%6.2%6.2%1.6%
Call IV 25d18.5%14.5%22.5%17.0%15.9%
Put IV 25d18.9%14.3%29.3%27.8%15.1%
Bid-Ask Spread %128.70114.41135.37135.37135.34
Gamma HHI0.680.600.740.730.61
Net GEX53.4K43.6K61.2K43.6K55.8K
Net DEX-1.3M-1.6M-805.8K-805.8K-1.6M
Net VEX-3.8K-4.5K-3.1K-3.3K-3.9K
Div Yield0.0%0.0%0.0%0.0%0.0%
P/C Ratio0.180.001.000.001.00
Total Volume8.714014542
Total OI473.524411558412513

Daily Data (21 trading days)

DatePriceMax PainATM IVExp MoveHV 20dIV RankVWIVSkew 25dTerm StrGEXDEXVEXP/CSpread %Call WallPut WallCall VolPut VolCall OIPut OI
2025-08-01$39.34$35.0025.2%7.2%19.0%19.1%19.8%10.8%-0.2%43.6K-805.8K-3.3K0.00135.37N/AN/A404075
2025-08-04$39.99$0.0027.5%6.3%19.3%24.1%0.0%2.4%-0.3%45.8K-858.3K-3.4K0.00129.54N/AN/A004065
2025-08-05$40.24$0.0026.8%6.5%18.7%22.5%0.0%2.8%-0.4%44.9K-910.5K-3.3K0.00130.60N/AN/A204065
2025-08-06$40.14$0.0026.3%6.4%18.7%21.5%0.0%2.1%-0.5%46.8K-919.6K-3.3K0.00133.99N/AN/A004065
2025-08-07$40.09$0.0028.6%6.8%17.9%26.5%22.2%6.8%0.2%46.4K-916.1K-3.3K0.00114.41N/AN/A204065
2025-08-08$40.30$40.0029.1%5.9%17.6%27.6%25.3%2.8%3.4%46.9K-940.9K-3.3K0.00126.19N/AN/A104065
2025-08-11$40.28$40.0037.1%6.3%17.6%44.8%14.0%1.1%-0.8%47.7K-960.5K-3.2K0.00127.56N/AN/A204075
2025-08-12$41.31$40.0033.2%5.7%19.1%36.5%19.6%-1.7%0.5%49.5K-1.0M-3.2K0.40124.05N/AN/A524085
2025-08-13$42.34$40.0020.3%5.8%20.8%8.5%17.7%-1.9%0.3%47.4K-1.2M-3.1K0.00121.69N/AN/A14504067
2025-08-14$42.00$41.0023.1%6.6%20.9%14.5%23.1%-4.2%-2.4%61.0K-1.5M-4.5K0.20130.00N/AN/A515497
2025-08-15$42.00$41.0022.8%6.5%20.8%13.8%0.0%-0.5%-1.5%61.2K-1.6M-4.4K0.00127.06N/AN/A005508
2025-08-18$42.08$41.0022.4%6.4%20.7%13.1%20.2%-2.7%-0.6%60.7K-1.4M-4.5K0.00128.77N/AN/A025046
2025-08-19$42.16$41.0019.9%5.7%19.4%7.7%17.6%0.2%0.2%59.4K-1.5M-4.3K0.00129.12N/AN/A405046
2025-08-20$42.02$41.0021.9%6.3%18.9%12.0%0.0%0.1%-1.4%59.5K-1.4M-4.4K0.00135.18N/AN/A005076
2025-08-21$41.96$41.0021.9%6.3%18.4%12.1%0.0%-3.2%-1.1%60.6K-1.4M-4.4K0.00134.98N/AN/A005076
2025-08-22$43.41$41.0019.0%5.4%21.9%5.7%15.7%-7.7%3.1%57.7K-1.6M-4.0K0.50130.34N/AN/A215076
2025-08-25$43.22$41.0024.0%6.9%22.0%16.5%0.0%-1.2%0.3%56.6K-1.6M-3.9K0.00132.80N/AN/A305095
2025-08-26$42.97$41.0023.7%6.8%21.9%15.9%0.0%1.2%-0.1%56.9K-1.6M-3.9K0.00130.16N/AN/A005085
2025-08-27$43.41$41.0022.2%6.4%21.1%12.6%0.0%0.9%1.7%56.2K-1.6M-3.7K0.00123.26N/AN/A005085
2025-08-28$43.28$41.0025.0%7.2%20.6%18.7%0.0%0.6%-1.2%57.2K-1.6M-3.7K0.00122.29N/AN/A005085
2025-08-29$43.23$41.0021.4%6.1%18.4%10.8%0.0%-0.9%-1.9%55.8K-1.6M-3.9K1.00135.34N/AN/A115085