What happened Shares of Amkor Technology (NASDAQ: AMKR), a semiconductor packaging and test services company, were falling today after the company's stock received a downgrade from Credit Suisse analyst Randy Abrams. The tech stock had fallen by 11.3% as of 3:46 p.m. EDT. So what Abrams downgraded Amkor's stock to a neutral rating, down from outperform, and put a price target on the stock of $27, which was down from $28.50. While that wasn't welcome news, the analyst still believes the company could reach the higher end of its third-quarter sales guidance. Image source: Getty Images. Of course, investors don't like to see a stock get downgraded or for its target price to be lowered, so it's no surprise that Amkor's stock took a hit today. But today's drop may sting a little more than usual considering that the stock has been sliding over the past four weeks and, with today's drop, Amkor's share price is down nearly 20% over the past month. Now what Amkor released solid results for the second quarter (reported on Oct. 4), with sales increasing 20% and EBITDA spiking 40% from the year-ago quarter. The company's management also issued guidance for the third quarter, with sales expected to be in the range between $1.65 billion to $1.75 billion. That represents a nearly 30% increase, at the high end of Amkor's guidance. While today's share price dive isn't a fun experience, long-term investors may want to take it in stride. Amkor's stock is still up 77% over the past year and, based on its revenue guidance for the third quarter, the company appears to be on pace for more growth. 10 stocks we like better than Amkor TechnologyWhen our award-winning analyst team has a stock tip, it can pay to listen. After all, the newsletter they have run for over a decade, Motley Fool Stock Advisor, has tripled the market.* They just revealed what they believe are the ten best stocks for investors to buy right now... and Amkor Technology wasn't one of them! That's right -- they think these 10 stocks are even better buys. See the 10 stocks *Stock Advisor returns as of September 17, 2021 Chris Neiger has no position in any of the stocks mentioned. The Motley Fool has no position in any of the stocks mentioned. The Motley Fool has a disclosure policy.Source