Market Update: Costco, Xencor, and various biotech firms report earnings and stock shifts

Various companies reported significant stock market activity and financial results. Costco Wholesale shares traded near $971.40, supported by a recent quarter where the company reported $70.53 billion in revenue and an earnings per share of $4.93.

In the biotechnology sector, Xencor, Inc. reached a new 52-week high, trading at approximately $28.46. The company reported revenue of $51.22 million for the quarter, with earnings per share of ($0.29), exceeding analyst expectations.

Conversely, REGENXBIO Inc. and Nanobiotix S.A. both experienced share price gaps downward. REGENXBIO opened at $8.29 after a previous close of $10.72, while Nanobiotix shares opened at $40.72 following a close of $43.55.

Omeros Corporation saw Chief Accounting Officer David Borges sell 906 shares at an average price of $19.10. The company recently reported quarterly revenue of $28.53 million, beating consensus estimates.