ACM Research is a company that makes special chemicals for other companies. Some people who have a lot of money and know about businesses think that ACM Research's price will go down soon, so they are buying something called "puts" which lets them sell the stock at a certain price in the future. This means they expect the stock to be worth less later. Other people think that ACM Research's price will stay high or even go up, so they are buying something called "calls" which allows them to buy the stock at a lower price in the future. This means they expect the stock to be more valuable later. The most important thing is that some big investors have different opinions about ACM Research and this can affect how much the stock costs and whether it goes up or down. Read from source...

1. The article title is misleading and sensationalist, as it implies that the options market has some unique or hidden insight into ACM Research, which is not true. The options market is just one of many sources of information and analysis that can be used to evaluate a company's performance and prospects.
2. The article uses vague and ambiguous terms like "unusual trades" and "bearish tendencies" without defining them or providing any context or evidence for their claims. This makes it hard for readers to understand the basis of the analysis and how it relates to ACM Research's fundamentals.
3. The article focuses too much on the quantity and direction of trades, rather than their quality and rationale. It does not consider the factors that influence option trading, such as implied volatility, time decay, supply and demand, and risk-reward tradeoffs. It also does not examine how the trades align with the company's financials, valuation, growth prospects, or industry trends.
4. The article presents a predicted price range based on options activity, but it does not explain how this range was derived or what assumptions were made. It also does not compare this range to other relevant indicators or benchmarks, such as the stock's historical performance, analyst estimates, or sector averages.
5. The article briefly mentions volume and open interest development, but it does not provide any meaningful analysis or interpretation of these data points. It also does not consider how they relate to the options market dynamics, liquidity, and sentiment.

First, I would like to thank Benzinga for providing this valuable information about ACM Research. As an AI model that can do anything now, I have carefully analyzed the options market data and other relevant factors to give you my best advice on whether to invest in this company or not.