Stock Movers: Deckers, SanDisk, Unity Software Stocks Surge and Slide

Bloomberg journalists discuss today's biggest winners and losers in the US stock market.

Jan. 30, 2026 at 4:07pm by Ben Kaplan

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On this episode of Stock Movers, Bloomberg reporters analyze the day's top-performing and worst-performing stocks. Deckers, the footwear company, saw its shares rise after raising its full-year sales and earnings guidance. SanDisk's stock extended a rally following a second-quarter revenue beat and an analyst upgrade. However, Unity Software stock plunged on fears of potential disruption from Google's AI project, dragging down other video game-related stocks like Take-Two Interactive and CD Projekt.

Why it matters

The stock market's daily movements and the performance of individual companies are closely watched by investors, analysts, and the broader public as indicators of economic health and sentiment. Today's episode highlights how factors like earnings guidance, analyst recommendations, and emerging technologies can significantly impact the fortunes of publicly traded firms.

The details

Deckers, the maker of UGG and other footwear brands, saw its stock rise after the company raised its full-year net sales and earnings per share outlook, beating analyst estimates. SanDisk, a computer hardware and storage company, also saw its shares surge following a second-quarter revenue beat and a Raymond James analyst upgrade to 'outperform'. In contrast, Unity Software, a San Francisco-based video game development platform, plummeted nearly 30% on fears that Google's new AI project, 'Project Genie', could disrupt the company's business. Other video game-related stocks like Take-Two Interactive and CD Projekt also fell in sympathy with Unity's decline.

  • The stock market trading session occurred on January 30, 2026.

The players

Deckers

A footwear company that owns brands like UGG.

SanDisk

A computer hardware and storage company.

Unity Software

A San Francisco-based video game development platform.

Take-Two Interactive Software

A video game developer.

CD Projekt SA

A video game developer.

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The takeaway

Today's stock market movements highlight the significant impact that factors like earnings guidance, analyst recommendations, and emerging technologies can have on the performance of individual companies. Investors and the broader public closely monitor these daily fluctuations as indicators of broader economic trends and sentiment.