COST Options History — May 2019

In May 2019, COST traded between $239.22 and $249.99. ATM implied volatility averaged 23.4%, placing in the 52.0% IV rank vs the trailing year. The 30-day expected move averaged 6.4%. IV traded above realized volatility by 6.7% (HV 20d: 16.8%). Max pain ranged from $230.00 to $240.00. Net GEX was positive for 21 of 22 trading days. Term structure was in contango for 0 of 22 days. Put/call ratio averaged 0.75.

Notable Days

  • 2019-05-31: Highest Volume — 45,564 contracts
  • 2019-05-31: Largest IV drop — 20.4% change
  • 2019-05-29: Highest IV Rank — 71.9%
  • 2019-05-29: Largest Expected Move — 8.2%

Monthly Statistics

MetricAvgMinMaxOpenClose
Price$244.70$239.22$249.99$242.03$239.86
Max Pain$231.59$230.00$240.00$240.00$235.00
ATM IV23.4%20.0%26.9%20.9%20.0%
Expected Move6.4%4.5%8.2%4.5%5.7%
HV 20d16.8%14.8%18.7%15.2%17.4%
HV 60d17.2%16.3%18.1%16.5%18.1%
IV Rank52.0%32.1%71.9%37.6%32.1%
IV Percentile79.5%51.2%96.4%59.5%51.2%
Term Structure-0.9%-1.5%-0.1%-0.4%-0.1%
VWIV22.7%15.8%29.4%15.8%20.6%
Skew 25d3.5%1.8%4.5%1.8%3.0%
Skew 10d7.1%4.9%8.7%4.9%5.9%
Call IV 25d21.8%18.7%24.9%20.1%18.7%
Put IV 25d25.4%21.8%28.4%21.8%21.8%
Bid-Ask Spread %4.542.6312.4812.484.87
Gamma HHI0.140.080.310.110.31
Net GEX17.6M-40.8M65.6M2.9M-40.8M
Net DEX-436.2M-645.2M-180.7M-345.6M-180.7M
Net VEX-4.1M-4.3M-3.9M-3.9M-4.1M
Div Yield0.0%0.0%0.0%0.0%0.0%
P/C Ratio0.750.251.280.611.28
Total Volume19,460.8648,32245,5649,09345,564
Total OI151,989.636141,550178,943144,419178,943

Daily Data (22 trading days)

DatePriceMax PainATM IVExp MoveHV 20dIV RankVWIVSkew 25dTerm StrGEXDEXVEXP/CSpread %Call VolPut VolCall OIPut OI
2019-05-01$242.03$240.0020.9%4.5%15.2%37.6%15.8%1.8%-0.4%2.9M-345.6M-3.9M0.6112.485,6593,43466,48977,930
2019-05-02$242.43$240.0021.7%4.8%15.0%42.1%16.9%3.0%-0.6%6.0M-364.0M-4.0M0.744.877,0175,21768,23278,510
2019-05-03$244.58$240.0021.2%4.5%15.1%39.4%16.0%2.7%-0.4%34.9M-468.9M-4.0M0.563.557,4154,12169,55879,828
2019-05-06$244.30$230.0022.2%5.9%14.8%45.2%21.2%3.0%-0.8%19.8M-453.5M-4.0M0.933.494,3054,01766,20677,369
2019-05-07$239.22$230.0025.4%6.7%16.5%63.5%23.4%3.6%-1.1%3.1M-224.4M-4.2M0.975.577,4057,21467,23379,193
2019-05-08$242.04$230.0024.4%6.6%17.0%57.5%22.6%3.6%-1.1%9.5M-339.2M-4.3M0.255.6626,5406,55769,22381,611
2019-05-09$243.38$230.0025.3%6.6%17.1%62.4%24.8%3.9%-1.2%15.4M-365.6M-4.3M0.324.5932,13510,17668,73085,167
2019-05-10$247.30$230.0022.7%6.2%16.8%47.8%21.5%3.7%-1.1%65.6M-579.6M-4.2M0.556.7915,1468,34668,14485,354
2019-05-13$241.92$230.0024.9%7.0%18.7%60.7%24.0%4.3%-0.3%10.0M-323.3M-4.2M1.004.376,5446,55563,37079,799
2019-05-14$243.18$230.0025.0%6.7%17.5%60.8%23.3%4.4%-1.5%12.3M-368.0M-4.2M0.483.4515,4837,50666,58083,247
2019-05-15$244.63$230.0023.4%6.4%17.5%51.9%23.4%4.5%-1.0%22.2M-455.7M-4.2M0.884.945,8945,20670,76185,353
2019-05-16$246.89$230.0022.3%6.3%17.7%45.7%21.9%3.7%-0.6%33.9M-582.0M-4.1M0.703.9911,5828,05872,33887,553
2019-05-17$248.34$230.0022.4%6.1%17.8%45.9%21.0%3.4%-1.4%21.9M-644.4M-4.1M0.542.6312,4996,70571,53889,534
2019-05-20$249.47$230.0023.4%6.6%17.4%52.0%24.3%3.7%-0.8%23.9M-600.0M-4.1M0.813.417,4926,03562,81778,733
2019-05-21$249.92$230.0023.2%6.6%17.1%50.7%23.4%3.6%-0.9%30.3M-631.5M-4.2M0.512.8911,6725,91765,49081,129
2019-05-22$249.99$230.0023.0%6.6%16.5%49.8%23.5%3.5%-1.1%35.0M-645.2M-4.1M0.792.805,1714,07367,44783,166
2019-05-23$248.10$230.0024.6%7.1%16.4%58.9%25.4%4.0%-1.3%29.6M-548.9M-4.3M0.833.056,3125,22368,41883,880
2019-05-24$247.15$230.0023.0%6.7%15.9%49.5%23.4%3.6%-0.9%26.2M-500.7M-4.2M0.813.297,1975,79569,13684,923
2019-05-28$246.51$230.0024.3%7.3%15.8%56.7%26.1%3.7%-1.1%16.4M-464.4M-4.1M0.803.707,7976,20465,74181,143
2019-05-29$240.85$230.0026.9%8.2%17.9%71.9%29.4%3.5%-1.5%4.0M-240.3M-4.3M1.194.2311,58913,75069,28484,400
2019-05-30$241.27$230.0025.1%7.6%17.3%61.3%26.7%3.3%-1.3%5.5M-270.5M-4.3M0.895.2419,90617,70672,40087,872
2019-05-31$239.86$235.0020.0%5.7%17.4%32.1%20.6%3.0%-0.1%-40.8M-180.7M-4.1M1.284.8719,96625,59882,68796,256