BSY Options History — December 2025

In December 2025, BSY traded between $38.20 and $42.94. ATM implied volatility averaged 32.0%, placing in the 35.1% IV rank vs the trailing year. The 30-day expected move averaged 9.1%. IV traded above realized volatility by 7.4% (HV 20d: 24.6%). Max pain ranged from $40.00 to $45.00. Net GEX was positive for 3 of 22 trading days. Term structure was in contango for 12 of 22 days. Put/call ratio averaged 0.54.

Notable Days

  • 2025-12-18: Highest Volume — 371 contracts
  • 2025-12-02: Largest IV drop — 13.7% change
  • 2025-12-01: Highest IV Rank — 49.8%
  • 2025-12-01: Largest Expected Move — 11.1%

Monthly Statistics

MetricAvgMinMaxOpenClose
Price$40.55$38.20$42.94$41.88$38.20
Max Pain$43.64$40.00$45.00$45.00$40.00
ATM IV32.0%28.8%38.8%38.8%30.0%
Expected Move9.1%8.3%11.1%11.1%8.6%
HV 20d24.6%14.4%32.7%30.7%14.4%
HV 60d33.4%29.1%34.4%34.0%29.1%
IV Rank35.1%28.3%49.8%49.8%30.8%
IV Percentile56.1%41.3%83.7%83.7%45.2%
Term Structure-1.5%-29.8%3.2%-5.0%0.0%
VWIV32.2%28.9%36.9%36.4%36.9%
Skew 25d4.8%-1.6%10.0%3.0%4.6%
Skew 10d10.3%-10.4%49.2%6.8%5.9%
Call IV 25d32.1%25.9%36.3%35.8%30.3%
Put IV 25d37.0%32.2%39.6%38.8%34.9%
Bid-Ask Spread %92.6278.38102.2283.0598.59
Gamma HHI0.410.200.800.290.23
Net GEX-242.0K-696.6K25.4K-267.0K-9.2K
Net DEX7.1M102.0K12.2M9.6M690.4K
Net VEX-20.5K-36.4K-10.8K-30.8K-12.9K
Div Yield0.0%0.0%0.0%0.0%0.0%
P/C Ratio0.540.002.840.180.50
Total Volume77.955137120433
Total OI41,848.81810,03656,97456,52710,340

Daily Data (22 trading days)

DatePriceMax PainATM IVExp MoveHV 20dIV RankVWIVSkew 25dTerm StrGEXDEXVEXP/CSpread %Call WallPut WallCall VolPut VolCall OIPut OI
2025-12-01$41.88$45.0038.8%11.1%30.7%49.8%36.4%3.0%-5.0%-267.0K9.6M-30.8K0.1883.05N/AN/A1733151,3845,143
2025-12-02$42.81$45.0033.5%9.6%32.7%38.3%31.8%6.5%-0.8%-286.7K7.9M-36.4K1.1378.38N/AN/A404551,5225,172
2025-12-03$42.53$45.0034.5%9.9%32.1%40.5%0.0%3.6%-3.3%-313.1K9.0M-33.3K0.0080.73N/AN/A1051,5505,208
2025-12-04$42.45$45.0036.3%10.0%32.0%44.4%35.4%0.4%-0.2%-289.4K8.5M-34.3K0.1989.09N/AN/A43851,5505,213
2025-12-05$42.94$45.0032.0%9.2%30.5%35.1%32.1%1.7%0.4%-337.6K7.2M-34.5K0.0096.32N/AN/A26051,5645,063
2025-12-08$42.26$45.0034.5%9.3%30.1%40.6%32.0%-1.6%-1.8%-325.8K8.3M-29.0K0.8993.60N/AN/A766851,5645,011
2025-12-09$41.28$45.0035.9%9.2%29.7%43.5%32.7%4.5%1.0%-308.2K10.5M-24.0K0.0994.18N/AN/A11151,5505,014
2025-12-10$40.83$45.0031.7%9.1%27.8%34.5%33.4%4.0%1.0%-301.4K11.5M-20.3K0.9499.36N/AN/A171651,5474,942
2025-12-11$41.03$45.0032.0%9.2%28.0%35.0%31.3%6.3%0.3%-302.2K11.0M-19.4K0.0893.23N/AN/A53451,5494,898
2025-12-12$40.74$45.0030.5%8.7%26.3%31.9%31.0%4.3%3.2%-285.7K11.1M-18.0K0.5494.33N/AN/A281551,5854,853
2025-12-15$40.13$45.0031.4%9.0%26.7%33.7%33.8%1.7%-0.0%-334.6K12.0M-15.7K0.3591.11N/AN/A341251,6034,842
2025-12-16$40.48$45.0031.8%9.1%23.5%34.7%32.0%6.1%0.0%-353.3K11.5M-15.4K0.0593.83N/AN/A153751,6254,854
2025-12-17$40.05$45.0031.0%8.9%23.7%32.9%31.1%5.7%-0.0%-424.7K12.0M-14.9K1.2292.51N/AN/A182251,7594,843
2025-12-18$39.93$45.0031.1%8.9%21.9%33.1%31.1%3.1%0.6%-513.9K12.2M-14.5K0.3784.84N/AN/A27110051,7724,857
2025-12-19$39.84$45.0029.6%8.5%21.5%29.8%29.6%6.0%1.1%-696.6K12.2M-15.4K0.6096.38N/AN/A15952,0344,940
2025-12-22$39.84$45.0030.1%8.6%18.8%31.1%31.5%6.1%0.3%25.4K102.0K-14.7K0.1187.99N/AN/A148169,100936
2025-12-23$39.26$40.0028.8%8.3%19.3%28.3%30.1%8.8%0.6%11.1K245.6K-14.6K0.4596.61N/AN/A29139,246943
2025-12-24$38.95$40.0029.9%8.6%19.1%30.6%29.9%7.7%-0.2%4.3K374.3K-14.0K2.8495.43N/AN/A19549,256949
2025-12-26$38.89$40.0028.9%8.3%19.0%28.5%28.9%6.9%0.2%-7.4K482.1K-13.8K0.1797.52N/AN/A1229,2731,003
2025-12-29$39.13$40.0030.8%8.8%17.0%32.4%30.8%10.0%-0.5%-5.0K380.5K-14.0K0.1998.39N/AN/A53109,2801,003
2025-12-30$38.61$40.0030.9%8.8%17.3%32.6%35.4%7.5%-29.8%-3.6K137.1K-10.8K0.93102.22N/AN/A15149,3261,008
2025-12-31$38.20$40.0030.0%8.6%14.4%30.8%36.9%4.6%0.0%-9.2K690.4K-12.9K0.5098.59N/AN/A22119,3201,020