Grade: B — Generally Healthy, Minor Concerns
Framework: Schilit *Financial Shenanigans* + Beneish M-Score + forensic accounting principles
Data: SEC EDGAR 10-K (Filed 2026-02-27) + Yahoo Finance
Auditor: Ernst & Young LLP — Clean opinion (auditor since 2019)
One-line verdict: Monolithic Power Systems delivered strong 26.4% revenue growth to $2.8B with 55.2% gross margins, $838M in operating cash flow, and virtually no debt ($20M). Two watch items: AR growth of 48.2% significantly outpaced revenue growth of 26.4%, and CFFO growth of 6.3% lagged revenue growth of 26.4%. These are monitoring items, not red flags. The company restated FY2024 financials due to a material weakness in deferred income tax accounting, which is a governance concern but did not affect operating results. With a Z-Score of 11.63, virtually zero leverage, and strong FCF, this is among the cleanest balance sheets we screen.
| Metric | Result |
|---|---|
| Red Flags | **0** |
| Watch Items | **2** |
| Checks Completed | **17/18** (1 N/A) |
| Beneish M-Score | **-2.43** (safe -- below -2.22 threshold) |
| F-Score (Fraud Probability) | **0.54** (0.20% probability) |
| Altman Z-Score | **11.63** (safe zone -- extremely strong) |
| Auditor | Ernst & Young LLP -- Unqualified opinion |
| Fiscal Year | 2025 (ended December 31, 2025) |
| Report Date | 2026-04-05 |
Fabless Power Semiconductor Growth
MPS designs and sells high-performance power management solutions. Per the filing, revenue segments by end market show broad-based growth: "Revenue for the year ended December 31, 2025 was $2,790.5 million, an increase of $583.4 million, or 26.4%, from $2,207.1 million for the year ended December 31, 2024."
The filing states: "Revenue increased across all end markets." Specifically, enterprise data revenue increased "primarily driven by data center AI-related products." The company utilizes "a fabless business model, working with third parties to manufacture, assemble and test our ICs. This fabless approach allows us to focus our engineering and design resources on our strengths and to reduce our fixed costs and capital expenditures."
Profitability: Premium Margins with Minor Net Income Anomaly
| Metric | FY2022 | FY2023 | FY2024 (Restated) | FY2025 | Trend |
|---|---|---|---|---|---|
| Revenue | $1.8B | $1.8B | $2.2B | $2.8B | +26% YoY |
| Gross Profit | $1.0B | $1.0B | $1.2B | $1.5B | +26% |
| Gross Margin | 58.4% | 56.1% | 55.3% | 55.2% | Stable |
| Net Income | $438M | $427M | $1,592M* | $621M | -61% |
| Net Margin | 24.4% | 23.5% | 72.1%* | 22.3% | Normalized |
*FY2024 net income was abnormally high due to a $1.1B deferred tax benefit. The restated figure still shows this as the primary driver of the spike.
Per the filing: "Gross margin was 55.2% for the year ended December 31, 2025, compared with 55.3% for the year ended December 31, 2024. The decrease in gross margin was mainly driven by higher warranty expenses as a percentage of revenue, partially offset by lower inventory write-downs as a percentage of revenue."
Gross margins are remarkably stable at 55% despite 26% revenue growth -- a sign of pricing power and product mix strength.
Cash Flow: Strong but Lagging Revenue Growth
| Metric | FY2023 | FY2024 | FY2025 |
|---|---|---|---|
| Operating Cash Flow | $638M | $788M | $838M |
| Net Income | $427M | $1,592M | $621M |
| **CFFO / Net Income** | **1.49** | **0.50** | **1.35** |
| CapEx | -$58M | -$164M | -$175M |
| Free Cash Flow | $581M | $624M | $663M |
Per the filing: "For the year ended December 31, 2025, the $49.8 million increase in net cash provided by operating activities compared to the prior period was primarily due to increased accounts receivable collections, partially offset by increased inventory purchases and other changes in working capital."
The watch flag here: CFFO grew only 6.3% while revenue grew 26.4%. This gap is driven by working capital investments -- inventory increased from $419.6M to $564.6M as the company builds ahead of demand. Raw materials grew to $107.8M (from $91.9M), WIP to $220.4M (from $170.0M), and finished goods to $236.4M (from $157.8M).
The FY2024 Restatement: Material Weakness
The filing discloses a material weakness: the company restated FY2024 results due to a misstatement in "deferred income taxes and income tax benefit, net." Per the filing: "Management has been implementing and continues to implement measures designed to remediate the material weakness."
This is a governance concern. The restatement affected the deferred tax line but not revenue, gross profit, or operating income. The core business metrics are unaffected, but the company's internal controls failed on a complex tax accounting issue -- investors should monitor remediation progress.
Balance Sheet: Fortress-Class
MPS has $1.3B in cash and short-term investments against only $20M in debt. Goodwill is just $25.9M (1% of equity) from the small Axign acquisition. The Z-Score of 11.63 is the highest among companies we screen, reflecting the near-zero leverage and strong profitability.
The 18-Point Screening
| # | Check | Result | Detail |
|---|---|---|---|
| A1 | DSO Change | PASS | DSO 33 days, +5 days YoY |
| A2 | AR vs Revenue Growth | WATCH | AR growth 48.2% exceeds revenue growth 26.4% |
| A3 | Revenue vs CFFO | WATCH | Revenue grew 26.4% but CFFO only 6.3% |
| B1 | Inventory vs COGS | PASS | Inventory +34.6% vs COGS +26.8% |
| B2 | CapEx vs Revenue | PASS | CapEx +6.5% vs revenue +26.4% |
| B3 | SG&A Ratio | PASS | SG&A/Gross Profit = 27.9% |
| B4 | Gross Margin | PASS | Gross margin 55.2%, -0.1pp. Stable |
| C1 | CFFO vs Net Income | PASS | CFFO/NI = 1.35 |
| C2 | Free Cash Flow | PASS | FCF $663M, FCF/NI = 1.07 |
| C3 | Accruals Ratio | PASS | -5.2%. Low accruals |
| C4 | Cash vs Debt | PASS | Cash $1.3B covers $20M debt |
| D1 | Goodwill + Intangibles | PASS | $26M = 1% of equity |
| D2 | Leverage | PASS | Debt/EBITDA = 0.0x |
| D3 | Soft Asset Growth | PASS | Other assets +38.8% vs revenue +26.4% |
| D4 | Asset Impairment | N/A | No write-off data |
| E1 | Serial Acquirer FCF | PASS | FCF after acquisitions positive |
| E2 | Goodwill Surge | PASS | Goodwill+Intangibles -3% YoY |
| F1 | Beneish M-Score | PASS | M-Score = -2.43 |
Key Risks from the 10-K
1. Fabless Supply Chain Concentration
The filing warns: "we utilize a fabless business model" and "we have developed our own proprietary process and packaging technologies and collaborate with our foundry partners to install our technologies." Dependence on third-party foundries means supply disruptions could halt production.
2. AR Growth Outpacing Revenue
AR grew 48.2% while revenue grew 26.4%. The DSRI component of the M-Score is elevated at 1.172, the highest among the M-Score components. This is worth monitoring -- if the gap persists, it could signal revenue recognition timing issues or customer payment delays.
3. Tariff and Trade Policy Risk
The filing warns about "new or increased tariffs and other barriers to trade" and notes efforts "to leverage a diversified and resilient supply chain to reduce exposure to trade- and tariff-related risks." With a large Asia-based customer base, tariff exposure is material.
4. Material Weakness Remediation
The restatement and material weakness must be remediated. While the underlying issue was tax accounting rather than revenue or operating results, it raises questions about the maturity of internal controls for a company of this size ($2.8B revenue, ~$40B market cap).
Key Financial Trends (4-Year)
| Metric | FY2022 | FY2023 | FY2024* | FY2025 |
|---|---|---|---|---|
| Revenue | $1.8B | $1.8B | $2.2B | $2.8B |
| Net Income | $438M | $427M | $1,592M | $621M |
| Gross Margin | 58.4% | 56.1% | 55.3% | 55.2% |
| CFFO | $247M | $638M | $788M | $838M |
| FCF | $188M | $581M | $624M | $663M |
| Cash+ST Investments | $738M | $1.1B | $863M | $1.3B |
| Total Debt | $1.7M | $5.6M | $13.0M | $20.0M |
*FY2024 as restated
Summary
Grade: B. Zero red flags, two watch items, exceptionally strong balance sheet.
MPS is one of the cleanest companies in our screening universe. Zero debt of consequence, 55% gross margins, growing FCF, negative accruals, and an M-Score well in the safe zone. The two watch items -- AR growing faster than revenue and CFFO lagging revenue growth -- are typical of a company in a rapid growth phase building working capital.
The FY2024 restatement and material weakness are the primary blemishes. The tax accounting issue did not affect operations, but the internal controls failure at a company of this maturity is noteworthy. Monitor remediation progress.
The business is positioned well for the AI power management cycle, with a fabless model that generates high margins and requires minimal capital. The inventory buildup ($419M to $565M) represents a bet on continued demand growth.
**Disclaimer**: This report is based on Monolithic Power Systems' fiscal year 2025 10-K filed with the SEC on February 27, 2026. This is NOT investment advice.
**About EarningsGrade**: We screen earnings reports for financial red flags using an 18-point forensic framework. Grade B means generally healthy with minor concerns worth monitoring.