BSX Options History — May 2023

In May 2023, BSX traded between $50.52 and $53.98. ATM implied volatility averaged 20.9%, placing in the 13.0% IV rank vs the trailing year. The 30-day expected move averaged 6.0%. IV traded above realized volatility by 1.1% (HV 20d: 19.8%). Max pain ranged from $47.00 to $50.00. Net GEX was positive for 20 of 22 trading days. Term structure was in contango for 17 of 22 days. Put/call ratio averaged 0.95.

Notable Days

  • 2023-05-08: Highest Volume — 19,151 contracts
  • 2023-05-08: Largest IV spike — 13.3% change
  • 2023-05-26: Highest IV Rank — 21.4%
  • 2023-05-26: Largest Expected Move — 6.7%

Monthly Statistics

MetricAvgMinMaxOpenClose
Price$52.65$50.52$53.98$52.77$51.59
Max Pain$49.32$47.00$50.00$50.00$50.00
ATM IV20.9%18.9%23.3%18.9%20.4%
Expected Move6.0%5.4%6.7%5.4%5.9%
HV 20d19.8%15.6%22.8%18.6%22.8%
HV 60d17.4%16.2%19.5%17.1%19.5%
IV Rank13.0%6.2%21.4%6.2%11.5%
IV Percentile14.9%3.6%34.9%3.6%13.1%
Term Structure0.8%-1.2%2.5%0.8%-0.1%
VWIV20.6%18.2%23.8%20.6%22.4%
Skew 25d3.9%2.4%7.7%2.9%7.7%
Skew 10d8.5%5.4%19.0%7.3%19.0%
Call IV 25d19.1%16.0%20.7%18.4%16.0%
Put IV 25d23.0%21.0%25.3%21.4%23.6%
Bid-Ask Spread %24.646.1581.9481.9423.91
Gamma HHI0.310.210.490.280.28
Net GEX4.6M-2.5M11.4M3.4M3.5M
Net DEX-122.9M-202.0M-32.2M-122.5M-61.5M
Net VEX-1.2M-1.3M-982.8K-982.8K-1.2M
Div Yield0.0%0.0%0.0%0.0%0.0%
P/C Ratio0.950.103.890.310.55
Total Volume5,172.51,03919,1511,6152,185
Total OI169,026.864130,800202,124153,363142,426

Daily Data (22 trading days)

DatePriceMax PainATM IVExp MoveHV 20dIV RankVWIVSkew 25dTerm StrGEXDEXVEXP/CSpread %Call WallPut WallCall VolPut VolCall OIPut OI
2023-05-01$52.77$50.0018.9%5.4%18.6%6.2%20.6%2.9%0.8%3.4M-122.5M-982.8K0.3181.94N/AN/A1,23238360,13193,232
2023-05-02$52.86$50.0020.1%5.8%18.0%10.5%22.7%2.4%-0.0%2.8M-116.5M-1.0M0.7911.57N/AN/A7,9666,30560,62393,523
2023-05-03$52.78$50.0020.6%5.9%17.9%12.2%21.4%3.2%0.1%2.4M-117.1M-1.1M0.3462.61N/AN/A77626367,36599,513
2023-05-04$52.00$47.0021.8%6.1%18.6%16.2%21.3%4.3%1.9%-693.0K-85.0M-1.1M3.0523.51N/AN/A9542,90767,56499,670
2023-05-05$51.56$47.0020.4%5.7%18.5%11.6%19.6%4.0%2.0%-2.5M-68.4M-1.1M2.5021.46N/AN/A1,5823,95567,529102,448
2023-05-08$53.03$47.0023.2%6.3%20.8%21.1%21.1%3.7%1.4%1.6M-121.4M-1.1M0.1040.85N/AN/A17,4601,69168,785107,810
2023-05-09$53.28$47.0022.2%6.4%20.4%17.8%21.7%4.3%1.3%4.8M-154.0M-1.2M0.8449.73N/AN/A1,16598480,528108,586
2023-05-10$53.19$47.0021.7%6.2%20.5%15.9%20.1%3.5%1.2%5.2M-162.4M-1.2M0.2354.70N/AN/A8,0941,83580,473109,178
2023-05-11$53.34$50.0021.3%6.1%20.0%14.5%23.8%3.5%1.4%5.4M-156.5M-1.2M1.7916.84N/AN/A1,3392,39782,874110,732
2023-05-12$53.27$50.0021.5%6.2%20.0%15.3%19.4%4.5%1.6%7.6M-171.1M-1.2M0.198.50N/AN/A7,4611,44783,497112,766
2023-05-15$53.70$50.0020.5%5.9%20.1%11.8%20.0%3.3%2.5%9.2M-185.8M-1.2M0.348.69N/AN/A1,70257382,885114,000
2023-05-16$53.98$50.0019.5%5.6%20.2%8.2%19.9%3.6%2.3%11.4M-202.0M-1.1M0.138.84N/AN/A2,51932783,317114,469
2023-05-17$53.39$50.0019.8%5.7%19.6%9.3%19.4%2.9%2.4%7.7M-175.7M-1.2M0.8341.15N/AN/A1,4361,19284,014114,471
2023-05-18$53.50$50.0020.2%5.8%19.5%10.6%19.9%3.4%0.6%7.4M-184.0M-1.2M1.9413.28N/AN/A1,9463,78284,612115,408
2023-05-19$53.45$50.0019.3%5.5%15.6%7.7%18.2%3.6%0.9%7.7M-183.6M-1.2M0.216.15N/AN/A3,90884085,575116,549
2023-05-22$53.72$50.0020.0%5.7%15.6%10.1%20.2%3.4%0.4%8.0M-132.3M-1.2M0.728.43N/AN/A1,5161,09067,29563,505
2023-05-23$51.52$50.0019.4%5.5%22.1%7.7%20.3%3.5%0.3%3.8M-68.2M-1.2M0.899.15N/AN/A5,2384,65667,92263,882
2023-05-24$52.05$50.0021.2%6.1%22.3%14.3%19.5%4.6%-0.6%5.3M-85.2M-1.2M3.8930.07N/AN/A1,0464,07070,99266,792
2023-05-25$51.67$50.0020.7%5.9%21.4%12.6%20.8%4.5%0.2%3.7M-66.3M-1.3M0.267.40N/AN/A1,66843371,40769,198
2023-05-26$51.11$50.0023.3%6.7%21.6%21.4%20.6%4.4%-1.1%2.6M-51.5M-1.2M0.736.72N/AN/A1,3961,02372,10068,756
2023-05-30$50.52$50.0023.0%6.6%21.3%20.6%20.7%4.6%-1.2%1.2M-32.2M-1.2M0.316.55N/AN/A80624772,72369,466
2023-05-31$51.59$50.0020.4%5.9%22.8%11.5%22.4%7.7%-0.1%3.5M-61.5M-1.2M0.5523.91N/AN/A1,40877773,05469,372