MKS Q2 2026 earnings: Broad-based growth lifts operating margin

MKS Inc. (NASDAQ: MKSI) reported Q2 2026 revenue of $1.248 billion, up 28.3% from $973 million a year earlier, while GAAP diluted EPS increased to $2.41 from $0.92. All three end markets delivered double-digit growth, helping GAAP operating margin expand to 20.1% from 13.9%. Free cash flow reached $188 million, and management’s Q3 revenue guidance implies further sequential growth at the midpoint.

Core earnings data

For the quarter ended June 30, 2026, revenue growth combined with higher gross margin and slower expense growth to produce a larger increase in operating income. GAAP operating expenses rose about 8% to $344 million, substantially less than the 28.3% increase in revenue.

The improvement extended to non-GAAP results and cash generation. Adjusted EBITDA rose 49.2%, while free cash flow increased despite higher capital expenditures.

Business and segment performance

Revenue increased across Semiconductor, Electronics & Packaging, and Specialty Industrial. Electronics & Packaging recorded the fastest percentage growth, while Semiconductor remained the largest segment by revenue.

Management linked momentum in semiconductor and advanced-packaging applications to intensifying AI-related investment and said order volumes were growing rapidly. MKS did not disclose order totals, but each segment also grew sequentially from Q1 2026, indicating that the quarterly improvement was broadly distributed rather than dependent on one end market.

Product revenue rose to $1.104 billion from $848 million, while service revenue increased to $144 million from $125 million. Products therefore accounted for most of the company’s overall revenue increase.

Profitability, cash flow, and balance sheet

Gross margin increased by 100 basis points to 47.6%. Because revenue grew much faster than operating expenses, GAAP operating margin expanded by 620 basis points and non-GAAP operating margin rose by 480 basis points to 25.6%. Lower interest expense also supported net income, falling to $38 million from $55 million.

Non-GAAP net earnings were $232 million, compared with GAAP net income of $175 million. The largest adjustment was $62 million of acquired-intangible amortization, alongside $6 million of restructuring and other costs and smaller debt-related adjustments.

Operating cash flow increased to $243 million from $165 million. Capital expenditures rose to $55 million from $29 million, leaving free cash flow of $188 million compared with $136 million a year earlier.

MKS ended June with $611 million in cash and cash equivalents. It also had $1.5 billion of secured term-loan principal, $1.4 billion of convertible senior notes, and €1.0 billion of senior notes outstanding. The company reported up to $1.0 billion of additional revolving-credit capacity, subject to leverage requirements.

Short-term debt increased to $1.399 billion from $51 million at the end of 2025 because the stock-price conversion condition for the convertible notes was satisfied. Noteholders can elect to convert during Q3 2026, so the notes were classified as short-term debt. This was a classification change rather than a newly issued short-term borrowing. MKS subsequently made a voluntary $100 million term-loan prepayment in August.

Quarterly cash flow rebounded, but first-half working capital remained a drag

The Q2 cash-flow improvement did not fully carry through to the six-month comparison. First-half net income more than doubled to $258 million, but operating cash flow declined to $296 million from $306 million and free cash flow fell to $217 million from $259 million.

Changes in operating assets and liabilities used $151 million of cash during the first half, compared with a $17 million contribution a year earlier. Accounts receivable increased to $830 million from $651 million at year-end, while inventories rose to $1.033 billion from $921 million. First-half capital expenditures also increased to $79 million from $47 million. These working-capital and investment requirements explain why cash generation lagged the sharp improvement in reported earnings over the six-month period.

Q3 2026 guidance

MKS guided to a Q3 revenue midpoint of $1.35 billion, approximately 8% above Q2 revenue. The gross-margin midpoint of 47.0% is 60 basis points below the Q2 result, suggesting that management expects further sales growth with a modest sequential normalization in gross margin.

The guidance incorporates the effects of U.S. import tariffs and retaliatory actions considered through the period immediately before the earnings release. Subsequent changes in trade policy are not reflected in these ranges.

Recent insider transactions

The supplied insider data show 15 purchases totaling 117,773 shares and 28 sales totaling 139,980 shares over the latest six-month period, resulting in a net sale of 22,207 shares. The 10 most recent reported transactions were all sales; this information alone does not establish insiders’ views about the company’s outlook.

Risks investors should monitor

• Tariff and trade-policy changes: Q3 guidance reflects tariff conditions considered before the release date. New U.S. measures or retaliatory actions could alter costs, demand, or gross margin.
• Working-capital requirements: Rising receivables and inventory weighed on first-half operating cash flow even as earnings increased. Continued expansion in these balances could limit cash conversion.
• Debt and convertible-note exposure: MKS carries substantial term-loan and note obligations. The $1.4 billion convertible-note classification also introduces potential conversion, settlement, and dilution considerations during Q3.
• Demand sustainability: Management tied part of the current momentum to AI-related semiconductor and advanced-packaging investment. Changes in customer capital spending or order conversion could affect the revenue trajectory embedded in guidance.

Summary

MKS’s Q2 2026 results featured broad-based end-market growth, higher gross margin, significant operating leverage, and improved quarterly free cash flow. Electronics & Packaging grew fastest, while Semiconductor remained the company’s largest business and benefited from AI-related investment. The Q3 outlook points to additional sequential revenue growth, but investors will need to monitor gross-margin normalization, tariff changes, working-capital demands, and the treatment of the convertible notes.