Stocks making big moves yesterday: Datadog, Shopify, Upwork, Under Armour, and Amentum

SelfRugger · 2026-02-24T22:08:32+00:00

Stocks that significantly moved include Datadog, which rose 15.6% after strong earnings; Shopify, up 8.7% due to an upgrade; Upwork, down 16.6% from poor guidance; Under Armour fell 7.4% after a downgrade; and Amentum dropped 10.5% due to mixed results.

SelfRugger

2026-02-24 22:08:32

Abstract generation in progress

Stocks making big moves yesterday: Datadog, Shopify, Upwork, Under Armour, and Amentum

Anthony Lee

Wed, February 11, 2026 at 10:00 PM GMT+9 2 min read

In this article:

                                      StockStory Top Pick

DDOG

-4.85%

SHOP

-7.25%

 UAA  

 -1.55%  

 

 

 UPWK  

 -5.82%  

 

 

 UA  

 -1.24%

Check out the companies making headlines yesterday:

**Datadog (NASDAQ:DDOG): **Cloud monitoring platform Datadog (NASDAQ:DDOG) rose by 15.6% on Tuesday after the company reported better-than-expected fourth-quarter results and provided an upbeat revenue forecast for the upcoming quarter. See our full article here.

Is now the time to buy Datadog? Access our full analysis report here, it’s free.

**Shopify (NASDAQ:SHOP): **E-commerce platform Shopify (NYSE:SHOP) rose by 8.7% on Tuesday after an upgrade from MoffettNathanson and positive sentiment from investors ahead of its scheduled quarterly earnings announcement. See our full article here.

Is now the time to buy Shopify? Access our full analysis report here, it’s free.

**Upwork (NASDAQ:UPWK): **Online work marketplace Upwork (NASDAQ:UPWK) fell by 16.6% on Tuesday after the company issued disappointing financial guidance for the upcoming quarter and reported a drop in a key user activity metric. See our full article here.

Is now the time to buy Upwork? Access our full analysis report here, it’s free.

**Under Armour (NYSE:UAA): **Athletic apparel company Under Armour (NYSE:UAA) fell by 7.4% on Tuesday after Citi downgraded the stock to Sell from Neutral, citing concerns that the company’s turnaround in North America faced increasing pressure. See our full article here.

Is now the time to buy Under Armour? Access our full analysis report here, it’s free.

**Amentum (NYSE:AMTM): **Government engineering solutions provider Amentum Holdings (NYSE:AMTM) fell by 10.5% on Tuesday after the company reported mixed fourth-quarter 2025 results, with a revenue miss and guidance that failed to impress investors. See our full article here.

Is now the time to buy Amentum? Access our full analysis report here, it’s free.

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