BKLN Options History — September 2025

In September 2025, BKLN traded between $20.88 and $21.04. ATM implied volatility averaged 7.3%, placing in the 14.5% IV rank vs the trailing year. The 30-day expected move averaged 1.5%. IV traded above realized volatility by 5.4% (HV 20d: 2.0%). Max pain ranged from $20.00 to $26.00. Net GEX was positive for 0 of 21 trading days. Term structure was in contango for 4 of 21 days. Put/call ratio averaged 273.99.

Notable Days

  • 2025-09-09: Highest Volume — 1,978 contracts
  • 2025-09-08: Largest IV spike — 738.7% change
  • 2025-09-08: Highest IV Rank — 100.0%
  • 2025-09-02: Largest Expected Move — 3.4%

Monthly Statistics

MetricAvgMinMaxOpenClose
Price$20.95$20.88$21.04$20.91$20.93
Max Pain$23.71$20.00$26.00$20.00$22.00
ATM IV7.3%4.1%37.9%11.7%6.5%
Expected Move1.5%1.0%3.4%3.4%1.9%
HV 20d2.0%1.0%2.3%2.2%2.3%
HV 60d2.2%2.0%2.3%2.3%2.2%
IV Rank14.5%5.5%100.0%27.1%12.3%
IV Percentile29.7%9.9%100.0%66.3%41.7%
Term Structure-1.7%-4.7%1.9%1.7%-3.6%
VWIV8.0%3.2%15.1%6.3%5.8%
Skew 25d17.4%-7.5%48.1%10.6%-7.5%
Skew 10d23.9%-13.6%71.8%6.7%-13.0%
Call IV 25d13.3%6.8%18.7%7.8%18.7%
Put IV 25d30.7%6.8%60.9%18.5%11.1%
Bid-Ask Spread %108.01101.64112.52111.01105.33
Gamma HHI0.570.440.680.650.60
Net GEX-2.9M-4.9M-1.4M-2.0M-4.2M
Net DEX13.3M9.3M15.8M10.4M14.1M
Net VEX-47.6K-61.4K-15.6K-34.3K-57.5K
Div Yield0.0%0.0%0.0%0.0%0.0%
P/C Ratio273.991.251977.002.301.25
Total Volume353.33381,97810640
Total OI22,990.90521,32324,60221,32324,338

Daily Data (21 trading days)

DatePriceMax PainATM IVExp MoveHV 20dIV RankVWIVSkew 25dTerm StrGEXDEXVEXP/CSpread %Call VolPut VolCall OIPut OI
2025-09-02$20.91$20.0011.7%3.4%2.2%27.1%0.0%10.6%1.7%-2.0M10.4M-34.3K0.00111.0101061,21520,108
2025-09-03$20.91$20.004.2%1.2%2.1%5.7%0.0%5.7%1.7%-1.7M11.3M-40.0K2.30107.74601381,21520,142
2025-09-04$20.93$25.007.3%1.6%2.1%14.6%6.3%-5.0%-2.1%-1.8M12.2M-48.6K9.50112.522191,21520,133
2025-09-05$20.94$25.004.5%1.9%2.2%6.7%8.1%-3.5%-2.2%-1.6M13.2M-50.8K0.00108.1801821,21720,130
2025-09-08$20.95$25.0037.9%1.0%2.2%100.0%10.1%45.8%-2.3%-1.4M13.4M-52.6K0.00107.5501301,21720,150
2025-09-09$20.95$25.0015.3%1.7%2.2%36.8%6.7%-4.3%-2.4%-1.8M12.0M-44.3K1977.00112.2411,9771,21820,200
2025-09-10$20.95$25.004.6%1.3%2.1%6.9%4.8%48.1%-0.9%-2.1M14.8M-53.8K0.00110.2302871,21821,593
2025-09-11$20.98$25.004.4%1.3%2.2%6.3%10.7%45.6%1.1%-2.4M12.4M-41.0K0.00104.0802801,21821,691
2025-09-12$20.98$25.004.3%1.2%2.2%6.0%3.2%44.6%-2.5%-2.0M15.8M-61.4K0.00111.2301951,21821,811
2025-09-15$21.01$25.004.8%1.4%2.2%7.4%0.0%44.7%-1.0%-2.3M14.3M-50.4K1.40109.8710141,21821,851
2025-09-16$21.01$25.004.3%1.2%1.0%6.1%0.0%45.6%-1.6%-2.5M15.1M-52.2K0.00105.110201,22821,856
2025-09-17$21.01$25.004.4%1.3%1.0%6.2%11.8%46.5%-1.7%-2.8M13.8M-45.6K0.00107.190301,22821,856
2025-09-18$21.04$25.004.6%1.3%1.0%6.9%5.0%41.9%-3.5%-1.9M9.3M-15.6K0.00104.8501,6221,22821,856
2025-09-19$21.02$25.005.1%1.5%1.1%8.3%12.2%45.7%-4.7%-3.8M15.8M-52.4K0.00112.080531,22823,374
2025-09-22$20.91$26.004.7%1.3%2.2%7.0%4.4%-7.3%-3.7%-4.4M13.6M-35.8K106.50101.64101,0651,10123,373
2025-09-23$20.91$22.004.8%1.4%2.2%7.3%0.0%-7.4%-1.5%-4.3M14.5M-60.3K7.00107.49171,09222,765
2025-09-24$20.91$22.004.9%1.4%2.2%7.5%4.9%-7.4%-1.6%-4.6M14.4M-51.7K87.00111.6265221,09322,768
2025-09-25$20.88$22.004.1%1.2%2.3%5.5%6.4%-3.3%1.9%-3.5M15.0M-61.1K0.00104.9801531,09323,016
2025-09-26$20.88$22.005.5%1.6%2.3%9.3%12.2%-7.3%-3.2%-4.0M12.1M-44.2K0.00110.0002061,09323,032
2025-09-29$20.91$22.006.1%1.8%2.3%11.1%15.1%-6.5%-3.5%-4.9M12.7M-46.0K1.25103.351261581,09323,120
2025-09-30$20.93$22.006.5%1.9%2.3%12.3%5.8%-7.5%-3.6%-4.2M14.1M-57.5K0.00105.330401,22323,115