Instrumentation: 5 stocks

These companies make test and measurement instruments, machine vision systems, and control software. Their orders follow factory, chip, and research spending.

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Instrumentation: 5 stocks
StockPriceQuality Score
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Tested. Our top-⁠scored stocks returned 2.2x the average stock over the next month. How we tested it

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Why instrumentation stocks are down this week

Instrumentation stocks fell a median 3.0% since the close on Oct 26 (5 stocks); the S&P 500 fell 1.6%.

What moved them

  • No single story: 3 of 5 fell with the market this week.
1 stock's story, for Pro members. See them free →

Questions about instrumentation

Why are instrumentation stocks down this week?

Instrumentation stocks fell a median 3.0% since the close on Oct 26 (5 stocks); the S&P 500 fell 1.6%. No single story: 3 of 5 fell with the market this week.

Which instrumentation stocks fell most this week?

Keysight Technologies (KEYS) fell 8.1%, Mesa Laboratories (MLAB) fell 5.8%, and MKS (MKSI) fell 3.0%.

What are the biggest companies in instrumentation?

The biggest by market cap are Keysight Technologies (KEYS) at $56B, Roper Technologies (ROP) at $44B, and MKS (MKSI) at $15B.

Which companies in instrumentation does Breakaway rank highest?

Roper Technologies (ROP) 18, Keysight Technologies (KEYS) 9, and Mesa Laboratories (MLAB) 7, the highest Quality Scores of the 5. Breakaway ranks every stock by its Quality Score, which reads each company's numbers and its chart; the ranking is information, not advice, and each stock's page shows the reasons behind its score.

Our top-scored stocks' record: Oct 2021 to Sep 2026, before costs. Recorded live since Sep 9 2026.

Breakaway publishes impersonal securities research and analytical tools: one formula, the same score for everyone. It is not personalized investment advice, and nothing here is a recommendation to buy or sell any security.

Market data from a licensed vendor. The age of every quote is shown on the page.

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