Today's Morning Movers and Top Ratings: ZI, DDOG, SHOP and More

$JetBlue Airways (JBLU.US)$ was rising 15% after activist Carl Icahn disclosed a 9.9% stake in the carrier, calling it an undervalued and "attractive" investment opportunity. Icahn said he has been talking to JetBlue's management and directors about possible representation on the company's board.

$ZoomInfo (ZI.US)$, a provider of database information for corporate sales and marketing teams, was surging 20% after posting fourth-quarter adjusted earnings and revenue that topped Wall Street estimates.

Shares of $Expedia (EXPE.US)$ jumped 12% after the travel advice site said it formed a special committee to consider "any proposals that may be brought forward for a potential transaction."

$Datadog (DDOG.US)$'s fourth-quarter earnings and revenue beat Wall Street expectations, but the company's financial projections for the year disappointed, pushing the stock lower by 8%.

$Shopify (SHOP.US)$ beat profit expectations for the latest quarter and projected margin improvement for the current one, but its shares were pulling back 8%.

$Arm Holdings (ARM.US)$ was down 7% in premarket trading after closing with a gain of 29% on Monday. Shares of the chip-design company have nearly doubled since Arm last week raised its guidance for the fiscal year.

$Hasbro (HAS.US)$ declined 10% after the toy maker reported fourth-quarter adjusted earnings that missed analysts' estimates as revenue fell 23% from a year earlier. Hasbro said it expects consumer products revenue to fall 7% to 12% in 2024.

$Arista Networks (ANET.US)$ reported fourth-quarter earnings of $2.08 a share, beating analysts' estimates of $1.70, as revenue jumped 21% $1.54 billion. The cloud-networking solutions company said it expects first-quarter revenue of between $1.52 billion to $1.56 billion versus estimates of $1.53 billion. The stock declined 7%.