BKLN Options History — December 2025

In December 2025, BKLN traded between $20.89 and $21.02. ATM implied volatility averaged 6.7%, placing in the 11.5% IV rank vs the trailing year. The 30-day expected move averaged 1.5%. IV traded above realized volatility by 4.9% (HV 20d: 1.7%). Max pain ranged from $20.00 to $22.00. Net GEX was positive for 0 of 22 trading days. Term structure was in contango for 20 of 22 days. Put/call ratio averaged 2.31.

Notable Days

  • 2025-12-18: Highest Volume — 719 contracts
  • 2025-12-02: Largest IV spike — 265.6% change
  • 2025-12-09: Highest IV Rank — 35.7%
  • 2025-12-03: Largest Expected Move — 3.5%

Monthly Statistics

MetricAvgMinMaxOpenClose
Price$20.98$20.89$21.02$20.89$21.01
Max Pain$21.45$20.00$22.00$20.00$21.00
ATM IV6.7%2.3%15.3%3.2%4.1%
Expected Move1.5%0.7%3.5%0.9%1.2%
HV 20d1.7%1.5%2.1%1.5%1.8%
HV 60d2.2%2.0%2.3%2.3%2.2%
IV Rank11.5%0.0%35.7%1.3%5.2%
IV Percentile29.7%0.0%82.1%2.0%11.1%
Term Structure7.1%-1.9%31.3%0.5%11.3%
VWIV14.2%3.8%41.0%41.0%7.7%
Skew 25d25.6%0.5%68.7%65.4%19.6%
Skew 10d37.9%-4.0%100.8%60.3%45.5%
Call IV 25d10.7%3.8%27.8%24.6%27.8%
Put IV 25d36.3%7.3%90.0%90.0%47.4%
Bid-Ask Spread %111.59103.21129.02115.46111.45
Gamma HHI0.720.480.980.820.49
Net GEX-809.7K-1.5M-235.1K-1.3M-494.2K
Net DEX4.0M1.5M6.1M6.1M1.9M
Net VEX-17.7K-29.6K-8.5K-29.6K-13.0K
Div Yield0.0%0.0%0.0%0.0%0.0%
P/C Ratio2.310.0014.6514.653.40
Total Volume95.682171931344
Total OI20,658.13618,69321,60021,38118,929

Daily Data (22 trading days)

DatePriceMax PainATM IVExp MoveHV 20dIV RankVWIVSkew 25dTerm StrGEXDEXVEXP/CSpread %Call VolPut VolCall OIPut OI
2025-12-01$20.89$20.003.2%0.9%1.5%1.3%41.0%65.4%0.5%-1.3M6.1M-29.6K14.65115.46202932,12719,254
2025-12-02$20.89$20.0011.7%3.4%1.5%25.5%0.0%11.6%-1.0%-783.0K5.0M-19.7K0.00114.910412,14719,200
2025-12-03$20.91$20.0012.1%3.5%1.5%26.5%0.0%12.2%-1.9%-1.5M5.6M-23.8K0.00116.970522,14719,201
2025-12-04$20.95$22.0012.5%1.4%1.6%27.7%0.0%2.1%2.5%-1.4M5.1M-22.8K0.00106.44012,14719,225
2025-12-05$20.95$22.0012.9%1.5%1.6%29.0%0.0%2.3%4.0%-1.4M5.7M-26.9K0.04115.992312,14719,226
2025-12-08$20.98$22.0014.6%1.5%1.7%33.7%0.0%0.5%1.5%-1.2M4.9M-18.4K0.03104.376022,17019,227
2025-12-09$20.98$22.0015.3%1.5%1.7%35.7%0.0%2.5%2.6%-1.4M5.6M-28.7K1.09103.2174812,21419,229
2025-12-10$21.01$22.005.4%1.6%1.8%7.7%13.3%2.8%2.1%-1.5M4.7M-20.4K2.55104.46802042,21419,191
2025-12-11$21.01$22.005.5%1.6%1.8%7.8%0.0%3.8%2.7%-1.2M4.2M-16.7K0.00110.06012,29419,294
2025-12-12$21.02$22.004.8%1.4%1.7%5.8%13.6%52.3%1.6%-453.8K3.7M-11.0K0.00109.410402,29419,295
2025-12-15$21.02$22.005.3%1.5%1.7%7.2%0.0%54.6%3.2%-648.0K4.3M-17.4K0.00109.32022,29419,295
2025-12-16$21.02$22.005.1%1.4%1.7%6.6%0.0%55.8%1.6%-393.1K3.7M-10.4K0.00110.560102,29419,297
2025-12-17$20.99$22.005.7%1.6%1.8%8.3%0.0%68.7%1.4%-371.3K4.2M-14.6K0.00116.18092,29419,306
2025-12-18$21.01$22.005.2%1.5%1.8%7.0%9.0%59.0%30.1%-327.5K4.4M-16.0K0.25106.975771422,29419,305
2025-12-19$21.02$22.003.7%1.1%1.6%2.7%21.1%56.4%8.9%-471.0K4.5M-16.7K0.00110.680112,20319,324
2025-12-22$20.95$22.003.9%1.1%2.1%3.4%0.0%3.7%9.1%-455.8K4.3M-15.7K0.00105.500302,18717,302
2025-12-23$20.95$21.004.5%1.3%1.8%5.1%7.9%5.4%31.3%-558.5K2.5M-16.2K0.00103.910302,18716,506
2025-12-24$20.98$21.002.3%0.7%1.9%0.0%3.8%28.3%1.5%-656.1K2.0M-13.7K0.73116.7960442,18716,531
2025-12-26$20.98$21.003.0%0.9%1.9%2.1%0.0%20.8%13.7%-573.0K2.1M-14.4K0.00111.360782,24716,531
2025-12-29$20.98$21.002.6%0.8%1.8%1.0%0.0%22.7%26.6%-548.1K2.8M-14.8K0.38129.0240152,24716,587
2025-12-30$21.01$21.003.3%0.9%1.8%2.8%10.2%12.9%2.5%-235.1K1.5M-8.5K0.00122.004002,28716,602
2025-12-31$21.01$21.004.1%1.2%1.8%5.2%7.7%19.6%11.3%-494.2K1.9M-13.0K3.40111.4510342,32716,602