ACMR Options History — April 2026

In April 2026, ACMR traded between $40.38 and $40.67. ATM implied volatility averaged 79.1%, placing in the 38.7% IV rank vs the trailing year. The 30-day expected move averaged 22.7%. IV traded above realized volatility by 12.4% (HV 20d: 66.7%). Max pain ranged from $44.00 to $50.00. Net GEX was positive for 2 of 2 trading days. Term structure was in contango for 2 of 2 days. Put/call ratio averaged 0.23.

Notable Days

2026-04-02: Highest Volume — 13,439 contracts
2026-04-02: Largest IV spike — 2.6% change
2026-04-02: Highest IV Rank — 40.1%
2026-04-02: Largest Expected Move — 23.0%

Monthly Statistics

Metric	Avg	Min	Max	Open	Close
Price	$40.53	$40.38	$40.67	$40.67	$40.38
Max Pain	$47.00	$44.00	$50.00	$50.00	$44.00
ATM IV	79.1%	78.1%	80.1%	78.1%	80.1%
Expected Move	22.7%	22.4%	23.0%	22.4%	23.0%
HV 20d	66.7%	64.7%	68.8%	68.8%	64.7%
HV 60d	85.4%	85.2%	85.6%	85.6%	85.2%
IV Rank	38.7%	37.4%	40.1%	37.4%	40.1%
IV Percentile	65.9%	64.7%	67.1%	64.7%	67.1%
Term Structure	8.8%	8.6%	9.1%	9.1%	8.6%
VWIV	85.0%	77.4%	92.6%	77.4%	92.6%
Skew 25d	3.8%	2.9%	4.8%	4.8%	2.9%
Skew 10d	15.1%	9.7%	20.4%	20.4%	9.7%
Call IV 25d	78.2%	77.0%	79.4%	77.0%	79.4%
Put IV 25d	82.0%	81.8%	82.2%	81.8%	82.2%
Bid-Ask Spread %	35.99	33.80	38.18	33.80	38.18
Gamma HHI	0.12	0.07	0.16	0.16	0.07
Net GEX	488.7K	382.9K	594.5K	594.5K	382.9K
Net DEX	-18.7M	-19.6M	-17.9M	-19.6M	-17.9M
Net VEX	-215.9K	-217.3K	-214.5K	-217.3K	-214.5K
Div Yield	0.0%	0.0%	0.0%	0.0%	0.0%
P/C Ratio	0.23	0.00	0.45	0.45	0.00
Total Volume	7,015	591	13,439	591	13,439
Total OI	37,413	37,256	37,570	37,256	37,570

Daily Data (2 trading days)

Date	Price	Max Pain	ATM IV	Exp Move	HV 20d	IV Rank	VWIV	Skew 25d	Term Str	GEX	DEX	VEX	P/C	Spread %	Call Wall	Put Wall	Call Vol	Put Vol	Call OI	Put OI
2026-04-01	$40.67	$50.00	78.1%	22.4%	68.8%	37.4%	77.4%	4.8%	9.1%	594.5K	-19.6M	-217.3K	0.45	33.80	N/A	N/A	408	183	28,994	8,262
2026-04-02	$40.38	$44.00	80.1%	23.0%	64.7%	40.1%	92.6%	2.9%	8.6%	382.9K	-17.9M	-214.5K	0.00	38.18	N/A	N/A	13,395	44	29,237	8,333