Investors interested in Computer and Technology stocks should always be looking to find the best-performing companies in the group. Has Amkor Technology (AMKR) been one of those stocks this year? Let's take a closer look at the stock's year-to-date performance to find out.Amkor Technology is one of 637 individual stocks in the Computer and Technology sector. Collectively, these companies sit at #6 in the Zacks Sector Rank. The Zacks Sector Rank includes 16 different groups and is listed in order from best to worst in terms of the average Zacks Rank of the individual companies within each of these sectors.The Zacks Rank is a proven system that emphasizes earnings estimates and estimate revisions, highlighting a variety of stocks that are displaying the right characteristics to beat the market over the next one to three months. AMKR is currently sporting a Zacks Rank of #1 (Strong Buy).The Zacks Consensus Estimate for AMKR's full-year earnings has moved 90% higher within the past quarter. This signals that analyst sentiment is improving and the stock's earnings outlook is more positive.Based on the latest available data, AMKR has gained about 5.03% so far this year. Meanwhile, the Computer and Technology sector has returned an average of 16.92% on a year-to-date basis. This shows that Amkor Technology is outperforming its peers so far this year.To break things down more, AMKR belongs to the Electronics - Semiconductors industry, a group that includes 37 individual companies and currently sits at #183 in the Zacks Industry Rank. Stocks in this group have gained about 10.53% so far this year, so AMKR is slightly underperforming its industry this group in terms of year-to-date returns.AMKR will likely be looking to continue its solid performance, so investors interested in Computer and Technology stocks should continue to pay close attention to the company.Want the latest recommendations from Zacks Investment Research? Today, you can download 7 Best Stocks for the Next 30 Days. Click to get this free report Amkor Technology, Inc. (AMKR): Free Stock Analysis Report To read this article on Zacks.com click here. Zacks Investment Research