ACMR Options History — May 2025

In May 2025, ACMR traded between $18.59 and $25.15. ATM implied volatility averaged 72.9%, placing in the 29.6% IV rank vs the trailing year. The 30-day expected move averaged 19.0%. IV traded below realized volatility by 15.8% (HV 20d: 88.7%). Max pain ranged from $19.00 to $21.00. Net GEX was positive for 13 of 21 trading days. Term structure was in contango for 12 of 21 days. Put/call ratio averaged 1.26.

Notable Days

  • 2025-05-08: Highest Volume — 4,965 contracts
  • 2025-05-08: Largest IV drop — 33.7% change
  • 2025-05-06: Highest IV Rank — 81.9%
  • 2025-05-02: Largest Expected Move — 28.5%

Monthly Statistics

MetricAvgMinMaxOpenClose
Price$22.47$18.59$25.15$18.59$22.60
Max Pain$20.24$19.00$21.00$20.00$21.00
ATM IV72.9%57.7%112.4%98.4%59.8%
Expected Move19.0%16.5%28.5%28.2%17.2%
HV 20d88.7%72.8%99.8%97.1%72.8%
HV 60d88.6%79.0%94.4%90.0%79.0%
IV Rank29.6%9.5%81.9%63.4%12.3%
IV Percentile50.4%15.5%99.2%96.4%24.6%
Term Structure-1.2%-24.3%7.8%-23.8%-0.3%
VWIV66.9%58.7%101.3%99.5%60.8%
Skew 25d4.3%0.9%9.6%4.2%2.3%
Skew 10d11.2%4.2%24.5%21.7%5.5%
Call IV 25d64.5%57.0%97.3%97.3%58.9%
Put IV 25d68.8%60.3%104.6%101.5%61.2%
Bid-Ask Spread %40.8827.9868.3568.3555.96
Gamma HHI0.090.070.150.080.09
Net GEX108.4K-86.9K530.6K-86.9K-19.7K
Net DEX-4.7M-21.4M10.0M10.0M-2.0M
Net VEX-217.5K-241.7K-179.9K-179.9K-216.9K
Div Yield0.0%0.0%0.0%0.0%0.0%
P/C Ratio1.260.106.380.251.78
Total Volume1,319.9523084,9651,814492
Total OI57,600.66744,68269,12261,99847,717

Daily Data (21 trading days)

DatePriceMax PainATM IVExp MoveHV 20dIV RankVWIVSkew 25dTerm StrGEXDEXVEXP/CSpread %Call WallPut WallCall VolPut VolCall OIPut OI
2025-05-01$18.59$20.0098.4%28.2%97.1%63.4%99.5%4.2%-23.8%-86.9K10.0M-179.9K0.2568.35N/AN/A1,45036432,56629,432
2025-05-02$19.98$20.0099.4%28.5%99.8%64.8%101.3%9.6%-24.3%-8.9K4.4M-198.2K1.2358.79N/AN/A79196933,50029,655
2025-05-05$19.80$19.00110.6%21.9%95.7%79.6%78.8%6.9%-3.2%-12.3K4.7M-193.4K0.3030.38N/AN/A75622633,55829,774
2025-05-06$19.62$19.00112.4%22.1%91.1%81.9%77.3%8.1%-3.9%-30.7K5.9M-193.6K6.2030.62N/AN/A1891,17233,67929,809
2025-05-07$19.94$19.00109.9%21.6%89.7%78.7%76.2%5.3%-2.5%-28.5K5.5M-196.9K4.6339.56N/AN/A3281,52033,70830,883
2025-05-08$22.59$19.0072.8%18.5%93.1%29.5%65.2%4.6%2.8%182.5K-6.1M-218.6K0.2236.76N/AN/A4,07389233,94031,805
2025-05-09$22.07$20.0062.4%18.2%87.2%15.8%62.8%6.0%4.7%144.7K-3.5M-222.4K0.2631.54N/AN/A1,89049535,60032,032
2025-05-12$24.30$20.0073.2%17.4%91.2%30.0%59.9%4.2%5.2%406.3K-16.4M-237.6K0.2342.17N/AN/A2,51358936,45732,074
2025-05-13$25.04$20.0072.9%16.7%90.9%29.6%59.1%4.5%7.8%509.2K-20.6M-241.3K0.3727.98N/AN/A84931836,59032,319
2025-05-14$25.15$20.0058.8%16.9%90.8%11.0%58.9%3.3%6.6%530.6K-21.4M-241.7K0.2138.62N/AN/A73215636,73132,391
2025-05-15$24.08$20.0059.0%16.9%90.3%11.2%59.7%3.1%1.2%479.0K-12.9M-232.9K0.3830.57N/AN/A38814636,68632,401
2025-05-16$23.62$20.0057.7%16.5%90.6%9.5%60.7%3.1%1.6%41.8K-12.1M-228.5K0.3842.30N/AN/A98737436,72031,443
2025-05-19$23.20$21.0058.5%16.8%87.8%10.5%58.7%3.9%0.9%33.3K-4.8M-221.8K0.5534.54N/AN/A19910920,66424,018
2025-05-20$24.30$21.0059.1%16.9%88.6%11.3%58.8%3.7%0.8%68.1K-8.6M-227.6K0.1033.19N/AN/A5014920,73324,095
2025-05-21$23.09$21.0061.6%17.7%88.8%14.6%59.5%3.1%-0.1%40.2K-4.8M-221.7K0.3744.16N/AN/A67324821,11224,112
2025-05-22$22.48$21.0061.7%17.7%88.1%14.8%61.3%3.0%-0.0%18.4K-2.5M-216.7K1.4531.22N/AN/A12718421,18424,303
2025-05-23$22.45$21.0061.0%17.5%87.9%13.8%63.3%4.1%1.2%13.8K-3.4M-221.7K6.3849.19N/AN/A2241,42821,26624,428
2025-05-27$23.30$21.0060.9%17.5%88.0%13.8%61.2%3.0%0.2%8.6K-5.0M-221.8K0.2842.36N/AN/A47213221,41625,835
2025-05-28$22.79$21.0061.0%17.5%77.2%13.8%61.0%3.0%-0.8%-9.7K-2.9M-218.0K0.2133.31N/AN/A2575521,54325,853
2025-05-29$22.78$21.0060.1%17.2%75.6%12.7%60.7%0.9%0.2%-3.7K-3.0M-216.8K0.7156.88N/AN/A23516721,70725,875
2025-05-30$22.60$21.0059.8%17.2%72.8%12.3%60.8%2.3%-0.3%-19.7K-2.0M-216.9K1.7855.96N/AN/A17731521,72825,989