Amphenol Q3 2026 earnings: AI data-center boom drives another record quarter

October 28, 2026

Amphenol topped Wall Street's targets again, as surging demand for AI data-center connectors pushed sales and profit above the high end of its own guidance.

Key takeaways

• Both sales and adjusted profit came in above the top end of the range Amphenol itself had guided to just a few months earlier, extending a run of record quarters for the connector maker.
• Amphenol completed a 2-for-1 stock split in September 2026, which roughly halved its per-share earnings figures and guidance ranges compared with earlier quarters this year — so the dollar EPS numbers look much smaller than the EPS reported a year ago, even though underlying profit grew sharply.
• Revenue was up 65% from a year earlier in dollar terms, and still up 37% after stripping out currency swings and recent acquisitions — meaning the bulk of the growth came from genuine demand, not just from buying other companies.
• New orders came in above sales for the quarter, producing a book-to-bill ratio of about 1.19-to-1 — a sign that customers, many of them building out AI data centers, are lining up more work than Amphenol can currently fill.
• Profitability kept pace with the growth rather than being diluted by it: over the past year Amphenol kept close to 39 cents of every revenue dollar after production costs and converted nearly 18 cents of every dollar into bottom-line profit, with both measures improving from a year earlier as higher sales volumes spread fixed costs over a larger base.
• The board raised the quarterly dividend by 20% and approved a new three-year, $4 billion share buyback program set to begin in 2027, moves that signal management’s confidence in the company’s ongoing cash generation.
• Growth was powered mainly by the IT datacom business, which makes the cables and connectors used in AI servers and data centers, alongside contributions from several small acquisitions completed during the quarter, including Empire Electronics, Dexgreen and Humanetics Sensors.
• Return on equity over the trailing year ran above 37%, underscoring how efficiently the company is turning shareholder capital into profit as the AI-related buildout continues.

How the stock took it

Amphenol Corp closed at $78.21 on Oct 27, 2026, the last session before the report, and at $82.08 on Oct 29, 2026, the first session after it — +5.0% across the report.

Closes from the market's daily record. Each figure spans the report date — from the last session that closed before it to the first that closed after — because a company may report before the open or after the close.

Fundamentals

Sources: company report · Barchart