Core Insights - Calix (CALX) shares have declined by 11.9% following the release of its fourth-quarter 2025 results, primarily due to a disappointing outlook for the first quarter of 2026 [1][10] Financial Performance - In the fourth quarter of 2025, Calix reported non-GAAP earnings of 39 cents per share, exceeding the Zacks Consensus Estimate by 1.75%, compared to 8 cents in the same quarter the previous year [2][10] - Non-GAAP revenues reached $272.4 million, surpassing the consensus mark by 0.90%, and showed a 3% increase sequentially and a 32% increase year-over-year, driven by strong demand from broadband experience provider (BXP) customers [3][10] - Appliance revenues were $225.8 million, accounting for 82.9% of total revenues, reflecting a year-over-year increase of 35.8% and a 2% sequential increase [4] - Software and Services revenues amounted to $46.6 million, contributing 17.1% of total revenues, with a year-over-year increase of 17.2% and a 7% sequential increase [5] Margins and Expenses - The non-GAAP gross margin expanded by 250 basis points year-over-year to 58%, with the appliance gross margin at 57.4%, up 120 basis points sequentially and 380 basis points year-over-year [6] - The non-GAAP software and services gross margin was 61.3%, down 390 basis points sequentially and 240 basis points year-over-year, mainly due to dual cloud costs during the transition to the third-generation platform [7] - Sales and marketing expenses as a percentage of revenues decreased by 350 basis points to 21.9%, while research and development expenses decreased by 230 basis points to 17.3% [7][8] Cash Flow and Balance Sheet - As of December 31, 2025, cash and cash equivalents were $388.1 million, an increase from $339.6 million as of September 27, 2025 [9] - The company generated cash flow from operations of $46.046 million and free cash flow of $40 million in the reported quarter, compared to $32.314 million and $27 million in the previous quarter, respectively [11] Guidance - For the first quarter of 2026, Calix expects non-GAAP revenues between $275 million and $281 million, indicating a 2% growth at the midpoint from the prior quarter [12] - The company anticipates non-GAAP earnings between 34 cents and 40 cents per share, with a projected non-GAAP gross margin between 56.25% and 58.25%, reflecting a decline of 75 basis points from the previous quarter [13]