Shares of Calix Inc. (NYSE: CALX) surged 15.58% in Monday's trading session following the release of the company's impressive first-quarter 2025 financial results, optimistic second-quarter outlook, and an announcement of an increased stock repurchase authorization.

The San Jose-based broadband platform and services company reported adjusted earnings per share of $0.19 for Q1 2025, significantly beating analysts' estimates of $0.13. Revenue for the quarter came in at $220.24 million, also surpassing the expected $206.98 million. This strong performance demonstrates Calix's continued growth and solid market position in the broadband industry.

Adding to the positive sentiment, Calix provided an upbeat outlook for the second quarter of 2025. The company forecasts Q2 revenue between $221 million and $227 million, and adjusted earnings per share in the range of $0.18 to $0.24. Both projections are above current market expectations, indicating continued momentum for the company. Furthermore, Calix's board of directors announced an additional $100 million authorization for its stock repurchase program, signaling confidence in the company's financial position and commitment to enhancing shareholder value.

Michael Weening, President and CEO of Calix, stated in the company's letter to shareholders, "Our focus on operational excellence drove our eighth consecutive quarter of double-digit free cash flow and our 19th consecutive quarter of positive free cash flow, which continued to strengthen our already strong balance sheet." This statement underscores the company's consistent financial performance and sound management practices.

Investors responded enthusiastically to the combination of strong quarterly results, positive future guidance, and the increased stock buyback program, driving the significant stock price increase. The market's reaction reflects growing confidence in Calix's business model and its ability to capitalize on the expanding broadband industry.