Cerebras Systems, a Sunnyvale, California-based chip startup known for its wafer-scale processors, is set to begin trading on Wall Street on Thursday at $185 per share, in a listing expected to raise about $5.5 billion, which would become the largest initial public offering in the United States so far this year. Cerebras had earlier aimed for a price range of $115 to $125 per share, later raised the range to $150 to $160, before finally settling at $185 per share. The company plans to issue 30 million shares, with an over-allotment option for another 4.5 million shares, and is being valued at more than $55 billion. A $5.55 billion raise would place Cerebras among the 15 largest IPOs ever completed on Wall Street. In January, OpenAI committed to acquiring a large quantity of Cerebras processors under a contract valued at more than $10 billion, and if certain conditions are fulfilled, OpenAI could control more than 10 percent of Cerebras’ capital.