BSY Options History — September 2025

In September 2025, BSY traded between $51.34 and $54.32. ATM implied volatility averaged 27.2%, placing in the 24.7% IV rank vs the trailing year. The 30-day expected move averaged 7.7%. IV traded above realized volatility by 6.4% (HV 20d: 20.8%). Max pain ranged from $50.00 to $60.00. Net GEX was positive for 21 of 21 trading days. Term structure was in contango for 19 of 21 days. Put/call ratio averaged 0.88.

Notable Days

  • 2025-09-12: Highest Volume — 3,139 contracts
  • 2025-09-23: Largest IV spike — 3.5% change
  • 2025-09-02: Highest IV Rank — 27.7%
  • 2025-09-02: Largest Expected Move — 8.2%

Monthly Statistics

MetricAvgMinMaxOpenClose
Price$52.92$51.34$54.32$54.32$51.34
Max Pain$52.86$50.00$60.00$60.00$50.00
ATM IV27.2%25.4%28.6%28.6%28.3%
Expected Move7.7%7.3%8.2%8.2%8.1%
HV 20d20.8%18.4%25.7%25.7%19.4%
HV 60d20.4%19.7%21.6%21.6%20.4%
IV Rank24.7%20.8%27.7%27.7%27.0%
IV Percentile35.1%15.1%46.4%46.4%45.2%
Term Structure2.0%-2.1%3.2%-1.6%3.0%
VWIV27.5%25.4%30.1%28.8%29.3%
Skew 25d-0.7%-11.8%4.8%-3.0%-2.7%
Skew 10d-1.3%-8.3%10.5%-5.2%-8.3%
Call IV 25d27.7%23.0%30.8%30.8%29.7%
Put IV 25d26.9%16.0%29.4%27.8%27.0%
Bid-Ask Spread %80.6865.4391.1090.2776.17
Gamma HHI0.320.280.350.350.31
Net GEX4.2M3.4M5.1M4.9M3.4M
Net DEX-53.8M-70.6M-38.0M-70.6M-47.2M
Net VEX-365.5K-459.9K-297.7K-459.9K-297.7K
Div Yield0.0%0.0%0.0%0.0%0.0%
P/C Ratio0.880.009.330.161.74
Total Volume680.095913,1395522,980
Total OI63,371.57159,23166,59364,22459,442

Daily Data (21 trading days)

DatePriceMax PainATM IVExp MoveHV 20dIV RankVWIVSkew 25dTerm StrGEXDEXVEXP/CSpread %Call WallPut WallCall VolPut VolCall OIPut OI
2025-09-02$54.32$60.0028.6%8.2%25.7%27.7%28.8%-3.0%-1.6%4.9M-70.6M-459.9K0.1690.27N/AN/A4777557,2936,931
2025-09-03$53.77$60.0028.3%8.1%25.5%27.0%28.2%0.0%-2.1%4.5M-60.9M-426.8K0.1290.88N/AN/A4515557,0396,958
2025-09-04$53.47$50.0027.4%7.3%23.4%25.1%25.6%0.7%2.4%4.3M-57.5M-419.4K0.0379.37N/AN/A302956,9616,962
2025-09-05$53.81$50.0027.7%7.6%19.6%25.6%26.8%0.4%1.7%4.6M-61.7M-421.9K0.0480.81N/AN/A9663657,2046,963
2025-09-08$54.20$50.0027.5%7.3%19.8%25.3%25.4%0.2%3.0%5.1M-64.7M-436.7K0.2180.51N/AN/A2104457,9176,988
2025-09-09$53.33$50.0026.9%7.3%20.2%24.0%25.4%-0.8%2.4%4.5M-53.3M-380.8K0.2381.77N/AN/A1463458,0646,987
2025-09-10$52.60$50.0026.1%7.5%20.7%22.2%26.6%-0.3%2.5%4.0M-46.4M-368.4K3.1082.52N/AN/A25077658,0447,010
2025-09-11$53.41$50.0025.4%7.3%20.7%20.8%26.3%-0.1%2.6%4.6M-56.6M-403.5K9.3383.50N/AN/A1981,84857,9177,725
2025-09-12$52.93$55.0026.3%7.5%20.9%22.7%27.8%-0.7%2.3%4.1M-48.8M-366.2K0.0082.53N/AN/A3,136357,9237,710
2025-09-15$52.73$55.0027.1%7.8%18.6%24.3%27.4%1.4%1.7%4.2M-47.4M-365.1K0.0281.53N/AN/A203458,8847,709
2025-09-16$52.10$55.0027.3%7.8%18.4%24.8%27.7%0.3%1.7%3.4M-38.0M-312.9K0.0283.43N/AN/A464958,8747,707
2025-09-17$52.64$55.0027.1%7.8%18.8%24.4%30.1%-0.7%1.3%4.2M-48.1M-356.1K0.0686.18N/AN/A2641758,6617,702
2025-09-18$52.96$55.0026.7%7.6%19.0%23.4%28.5%-11.8%2.5%4.5M-49.6M-356.1K0.0991.10N/AN/A2262158,8757,703
2025-09-19$52.60$55.0026.6%7.6%19.1%23.3%27.4%-0.2%2.6%4.2M-49.7M-355.1K2.1782.98N/AN/A5311558,9327,660
2025-09-22$53.84$55.0026.5%7.6%20.0%23.0%26.5%4.8%2.7%4.8M-68.5M-374.7K0.0690.91N/AN/A2221354,9954,236
2025-09-23$52.37$50.0027.4%7.8%22.2%25.0%28.0%-0.4%3.2%3.9M-53.8M-322.0K0.0670.81N/AN/A124755,0624,251
2025-09-24$52.33$50.0027.6%7.9%22.2%25.5%28.1%-0.3%2.7%3.9M-53.7M-319.4K0.1165.43N/AN/A1531755,0774,248
2025-09-25$52.07$50.0027.7%7.9%21.4%25.6%28.2%-0.9%2.4%3.7M-49.9M-311.6K0.0371.69N/AN/A178555,1394,256
2025-09-26$52.35$55.0027.3%7.8%21.4%24.7%27.6%-0.4%2.6%3.9M-52.0M-312.9K0.0570.49N/AN/A87455,1294,254
2025-09-29$52.23$50.0028.1%8.0%20.5%26.4%27.1%-0.9%1.9%3.8M-51.2M-308.5K0.7571.33N/AN/A574355,1564,255
2025-09-30$51.34$50.0028.3%8.1%19.4%27.0%29.3%-2.7%3.0%3.4M-47.2M-297.7K1.7476.17N/AN/A1,0881,89255,1604,282