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Definitions

beta

[bay-tuh, bee-] / ˈbeɪ tə, ˈbi- /


Example Sentences

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With fewer options free of AI risks, investors have had to turn to other corners of the stock market to provide some buffer against an AI-related unwinding, and negative beta has increasingly become an option.

From MarketWatch ● Oct. 7, 2026

Negative beta stocks helped limit the S&P 500’s losses during the March selloff and again in July, when the powerful artificial-intelligence-driven momentum trade hit the rocks, Emanuel said.

From MarketWatch ● Oct. 7, 2026

With every merger there’s a dominant and a submissive, an alpha and a beta, a winner and a loser.

From The Wall Street Journal ● Sep. 15, 2026

Another yeast strain can use ethylene glycol derived from PET to produce beta carotene, which the human body can convert into vitamin A.

From Science Daily ● Sep. 13, 2026

This is different from beta decay, in which a neutron is transformed into a proton by the emission of an electron.

From "Big Science" by Michael Hiltzik

While most of those chip makers have “betas” greater than 1—meaning their daily moves in the last few years have been larger than the S&P 500’s moves—all of the stocks above have betas below 1.

From Barron's ● Jun. 16, 2026

Consider the performance of a hypothetical portfolio that buys the 10% of stocks with the highest betas and sells short the decile of stocks with the lowest betas.

From MarketWatch ● Oct. 23, 2025

“We’re betas pretending to be alphas,” Denton said.

From New York Times ● Nov. 3, 2022

Even in the early betas, iOS 16 was more stable than most new software, which says something not only about Apple’s capabilities but also about how much it’s really writing from scratch here.

From The Verge ● Sep. 12, 2022

Greek letters move across the undersides of his eyelids: isosceles triangles, betas, sine curves.

From "All the Light We Cannot See" by Anthony Doerr




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