ACMR Options History — August 2025

In August 2025, ACMR traded between $23.81 and $30.85. ATM implied volatility averaged 58.3%, placing in the 11.1% IV rank vs the trailing year. The 30-day expected move averaged 15.7%. IV traded below realized volatility by 16.5% (HV 20d: 74.8%). Max pain ranged from $25.00 to $30.00. Net GEX was positive for 12 of 21 trading days. Term structure was in contango for 15 of 21 days. Put/call ratio averaged 0.93.

Notable Days

  • 2025-08-22: Highest Volume — 9,475 contracts
  • 2025-08-06: Largest IV drop — 33.2% change
  • 2025-08-05: Highest IV Rank — 53.0%
  • 2025-08-01: Largest Expected Move — 23.2%

Monthly Statistics

MetricAvgMinMaxOpenClose
Price$26.87$23.81$30.85$29.60$28.17
Max Pain$26.67$25.00$30.00$25.00$27.00
ATM IV58.3%49.5%90.5%80.9%51.4%
Expected Move15.7%14.2%23.2%23.2%14.7%
HV 20d74.8%38.3%101.7%38.3%101.7%
HV 60d55.7%45.6%66.7%50.9%66.7%
IV Rank11.1%0.0%53.0%40.2%2.6%
IV Percentile21.5%0.0%89.3%79.4%3.6%
Term Structure1.3%-19.5%9.0%-19.5%2.0%
VWIV55.1%50.1%83.1%83.1%52.9%
Skew 25d1.7%-1.2%4.5%4.5%-1.2%
Skew 10d4.0%-5.0%11.2%11.2%-5.0%
Call IV 25d54.5%49.1%80.5%80.5%53.8%
Put IV 25d56.3%50.8%85.0%85.0%52.6%
Bid-Ask Spread %54.0413.1769.4060.8062.22
Gamma HHI0.090.070.130.090.08
Net GEX148.5K-252.9K643.9K410.3K508.0K
Net DEX-12.8M-35.3M8.4M-29.2M-26.5M
Net VEX-205.2K-270.3K-180.7K-209.6K-262.8K
Div Yield0.0%0.0%0.0%0.0%0.0%
P/C Ratio0.930.156.890.850.83
Total Volume2,883.9054079,4751,261678
Total OI57,34447,00164,73554,32563,131

Daily Data (21 trading days)

DatePriceMax PainATM IVExp MoveHV 20dIV RankVWIVSkew 25dTerm StrGEXDEXVEXP/CSpread %Call WallPut WallCall VolPut VolCall OIPut OI
2025-08-01$29.60$25.0080.9%23.2%38.3%40.2%83.1%4.5%-19.5%410.3K-29.2M-209.6K0.8560.80N/AN/A68058126,87227,453
2025-08-04$30.64$30.0085.9%17.7%39.4%46.9%61.7%2.2%-0.3%485.8K-35.3M-204.4K1.3613.17N/AN/A52471527,03027,764
2025-08-05$29.64$30.0090.5%17.9%41.5%53.0%62.4%1.4%-0.9%408.9K-29.8M-204.3K0.6614.72N/AN/A4,5903,04327,27228,385
2025-08-06$25.36$30.0060.5%15.5%68.8%13.1%55.0%2.7%4.7%-131.5K-749.7K-188.2K0.3238.08N/AN/A4,7921,53429,64830,883
2025-08-07$24.20$26.0054.0%14.9%69.9%4.5%52.3%2.8%5.7%-162.2K4.9M-182.3K3.2454.90N/AN/A9192,97431,03831,207
2025-08-08$23.81$27.0051.7%14.6%69.6%1.6%50.1%1.5%6.6%-252.9K8.4M-185.9K0.1752.35N/AN/A1,16819831,09033,315
2025-08-11$23.99$27.0059.8%14.8%69.6%12.3%51.2%2.4%6.9%-242.6K7.7M-181.9K0.2955.85N/AN/A1,70949331,37933,356
2025-08-12$24.91$27.0057.9%14.7%70.4%9.7%51.1%1.2%6.4%-91.5K1.3M-183.9K0.4545.27N/AN/A92141030,88533,154
2025-08-13$25.59$26.0049.5%14.2%71.5%0.0%50.4%2.1%9.0%-41.2K-4.7M-188.3K0.3061.98N/AN/A95529031,08433,174
2025-08-14$25.45$26.0051.3%14.7%71.1%2.4%51.0%2.6%1.6%67.2K-2.6M-184.3K6.8964.61N/AN/A6194,26331,38833,208
2025-08-15$25.00$26.0049.7%14.3%71.1%0.3%50.7%2.5%1.6%173.7K-2.6M-180.7K0.6669.40N/AN/A2,9381,94431,75132,365
2025-08-18$25.09$26.0050.2%14.4%71.0%0.9%51.1%2.3%0.3%-43.8K-3.8M-186.2K0.7564.65N/AN/A39029121,42225,579
2025-08-19$25.21$26.0050.3%14.4%71.1%1.1%50.3%2.6%0.5%-34.7K-4.2M-187.3K0.3066.95N/AN/A46013721,72525,751
2025-08-20$25.02$26.0050.6%14.5%70.8%1.5%50.7%2.9%0.5%-47.2K-3.3M-189.5K0.4362.08N/AN/A28412321,80825,824
2025-08-21$25.61$26.0051.5%14.8%71.8%2.7%51.5%2.0%0.0%5.2K-6.3M-190.8K0.5863.23N/AN/A68640121,98425,897
2025-08-22$30.85$25.0057.8%16.6%99.4%10.8%58.7%0.6%-1.4%345.8K-31.7M-205.2K0.3046.28N/AN/A7,2622,21322,28625,897
2025-08-25$28.66$26.0057.2%16.4%99.7%10.1%57.4%2.1%-0.0%275.9K-21.2M-221.3K0.2057.93N/AN/A4,81194624,71927,296
2025-08-26$29.64$26.0054.4%15.6%100.7%6.4%55.8%0.4%1.7%429.7K-30.6M-250.0K0.1561.81N/AN/A1,34720527,99927,654
2025-08-27$28.40$26.0055.8%16.0%101.5%8.2%55.2%-0.0%-0.5%412.2K-25.4M-252.6K0.2058.30N/AN/A2,16443931,22527,791
2025-08-28$29.36$26.0052.4%15.0%101.1%3.8%53.6%-0.6%1.3%643.9K-33.9M-270.3K0.6160.27N/AN/A91055534,53827,997
2025-08-29$28.17$27.0051.4%14.7%101.7%2.6%52.9%-1.2%2.0%508.0K-26.5M-262.8K0.8362.22N/AN/A37130734,80028,331