Monolithic Power Systems Inc. Reports Robust Q3 2025 Financial Results

For the three months ending September 30, 2025, MPS reported a remarkable revenue of $737.2 million, representing an 18.9% increase from $620.1 million in the same period last year. This growth can be attributed to higher shipment volumes across several market segments. Notably, the revenue breakdown by market segment for Q3 2025 indicates significant increases:

For the nine months ended September 30, 2025, total revenue reached $2,039.3 million, marking a 28.6% increase from $1,585.4 million in the same period of 2024.

The cost of revenue for Q3 2025 stood at $330.9 million, making up 44.9% of total revenue, slightly up from 44.6% in Q3 2024. The gross margin for this period was 55.1%, a slight decrease from 55.4% in the previous year. For the nine-month period ending September 30, 2025, the cost of revenue was $913.8 million, representing 44.8% of revenue, with a gross margin of 55.2%, marginally down from 55.3% last year.

MPS continues to prioritize research and development (R&D) as a cornerstone of its growth strategy. For Q3 2025, R&D expenses totaled $98.2 million, or 13.3% of revenue, compared to $85.1 million (13.7%) in Q3 2024. This increase reflects higher cash compensation, stock-based compensation, and expenses related to new product development. Over the nine-month period, R&D expenses amounted to $286.7 million, or 14.1% of revenue, up from $239.0 million (15.1%) in the previous year.

Selling, general, and administrative (SG&A) expenses for Q3 2025 were $112.9 million (15.3% of revenue), compared to $94.4 million (15.2%) in Q3 2024. The increase was driven primarily by higher cash compensation and stock-based compensation. For the nine months ending September 30, 2025, SG&A expenses totaled $310.1 million (15.2% of revenue), up from $261.4 million (16.5%) in the same period of 2024.

MPS recorded an income tax expense of $27.3 million for Q3 2025, representing 13.3% of pre-tax income. The effective tax rate was lower than the federal statutory rate of 21%, primarily due to favorable changes in U.S. federal tax law and income from subsidiaries in lower tax jurisdictions.

As of September 30, 2025, MPS reported cash and cash equivalents of $1,081.3 million, alongside short-term investments of $188.2 million, a substantial increase from $691.8 million and $171.1 million, respectively, as of December 31, 2024. The company successfully repatriated $275 million from foreign subsidiaries with minimal tax impact, further enhancing its liquidity position.

The Board of Directors approved a stock repurchase program in February 2025, allowing for the repurchase of up to $500 million of common stock through February 2028. As of September 30, 2025, $495.3 million remained available for future repurchases. Additionally, MPS maintains a dividend program, with accrued cash dividends totaling $74.7 million as of the same date.

Monolithic Power Systems Inc. has demonstrated impressive revenue growth across multiple market segments while effectively managing costs and investing in future growth through R&D. The company remains focused on navigating macroeconomic challenges and leveraging its operational strengths to enhance shareholder value. As MPS continues to capitalize on its market opportunities, stakeholders can remain optimistic about its future trajectory.