Bull of the Day: Amphenol (APH)

Amphenol Corporation, a Zacks Rank #1 (Strong Buy), has quietly become one of the most essential companies in the artificial intelligence buildout — and one of the best-executing large caps in the entire market.

While investors have fixated on the chipmakers, Amphenol supplies the connectors, cables, sensors and interconnect systems that make those chips usable inside a data center. Every AI server rack requires high-speed copper, fiber and power interconnects, and Amphenol makes essentially all of it. The stock’s top rating reflects a powerful wave of upward earnings estimate revisions, historically the most reliable force driving share prices higher.

Shares have been in a sustained uptrend, gaining roughly 57% over the past year and about 27% year-to-date — comfortably outpacing the S&P 500’s 22% and 13% respective returns over those periods. That kind of persistent relative strength, backed by accelerating fundamentals, is exactly what we look for.

Amphenol is part of the Zacks Electronics – Connectors industry group, which currently ranks in the top 3% out of approximately 250 Zacks Ranked Industries. Because it is ranked in the top half of all Zacks Ranked Industries, we expect this group to outperform over the next 3 to 6 months, just as it has over the past year:

Image Source: Zacks Investment Research

The industry’s positioning has been driven by a positive earnings outlook for its constituent companies in aggregate — a powerful foundation that should lead to higher prices in the future. Historical research studies suggest that approximately half of a stock’s price appreciation is due to its industry grouping. In fact, the top 50% of Zacks Ranked Industries outperforms the bottom 50% by a factor of more than 2 to 1.

It’s no secret that investing in stocks that are part of leading industry groups can give us a leg up relative to the market. By focusing on leading stocks within the top 50% of Zacks Ranked Industries, we can dramatically improve our stock-picking success.

Company Description

Founded more than 90 years ago and headquartered in Wallingford, Connecticut, Amphenol designs and manufactures connectors, cables, antennas, sensors and interconnect systems used across virtually every industry on earth. Its end markets span IT datacom, communications, automotive, industrial, commercial aerospace, defense, mobile devices and broadband — an unusually diversified base that has historically cushioned the company through market downturns.

What separates Amphenol from a typical component supplier is its disciplined acquisition machine. Management has spent decades acquiring niche interconnect businesses and integrating them into a decentralized operating model that preserves entrepreneurial accountability.

The most consequential recent example is the CommScope connectivity and cable business, and the early returns have been striking: management raised its full-year expectations for the acquired operation to $4.6 billion in sales and 30 cents of adjusted EPS accretion, up sharply from prior guidance of $4.1 billion and 15 cents. That is the sort of upside revision that signals integration is running well ahead of plan.

Earnings Trends and Future Estimates

The second quarter, reported in late July, was a genuine blowout. Amphenol delivered record adjusted earnings of $1.35 per share, up 66.7% year over year and beating the Zacks Consensus Estimate of $1.19 by 13.5%. Revenues surged 55% to a record $8.76 billion, topping the consensus mark by 5.5%, with organic growth of over 30% and acquisitions contributing another 24 percentage points.

Communications Solutions led the way with 42% organic growth on exceptional IT datacom demand. Profitability expanded alongside the volume: adjusted operating margin reached a record 29.8%, up 420 basis points year over year.

The forward-looking indicators were even better than the quarter itself. Orders hit a record $10.7 billion, producing a book-to-bill ratio of 1.23:1 — meaning Amphenol is booking business considerably faster than it can ship it. For the third quarter, management guided revenues to $9.3–$9.4 billion, implying 50–52% growth, with adjusted EPS of $1.40–$1.42, up 51–53%.

Analysts have responded emphatically. Over the last 30 days, estimates have moved higher, lifting the full-year Zacks Consensus EPS Estimate by 11.7%. The consensus now stands at $5.25 per share, representing 57% growth.

Image Source: Zacks Investment Research

Amphenol has now surpassed the Zacks Consensus Estimate in each of the last four quarters, delivering an 11.8% average beat over that timeframe. Capital returns remain robust as well, with $208 million in share repurchases and $307 million in dividends returned during the latest quarter.

Let’s Get Technical

Amphenol APH has been one of the cleanest uptrends among large-cap technology names. This is exactly the kind of stock we want to include in our portfolio — one that is trending well and receiving positive earnings estimate revisions.

Image Source: StockCharts

Notice how shares reside above upward-sloping 50-day (blue line) and 200-day (red line) moving averages, a hallmark of a healthy bull trend, with the stock advancing on strong volume following the July earnings report. Momentum has built steadily throughout 2026.

Empirical research shows a strong correlation between near-term stock movements and trends in earnings estimate revisions. As we know, Amphenol has recently witnessed sharp upward revisions. As long as this trend remains intact (and APH continues to deliver earnings beats), the stock will likely continue its bullish run.

Bottom Line

Backed by a leading industry group and a flawless record of recent earnings beats, it’s not difficult to see why this interconnect powerhouse has captured investor attention. Currently, APH sports the highly coveted Zacks Rank #1 (Strong Buy), placing it in the top 5% of Zacks-covered stocks on estimate revisions.

With a record backlog, expanding margins, an acquisition integrating ahead of plan, and consensus estimates marching higher, the setup is compelling. If you haven’t already done so, be sure to put Amphenol on your watchlist.

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This article originally published on Zacks Investment Research (zacks.com).

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