Stocks making the biggest moves midday: MongoDB, Pinterest, NRG Energy, Kontoor Brands & more

March 3, 2026

TL;DR

AeroVironment stock rose 9% on ongoing Space Force contract talks.
Elliott Management will invest $1 billion in Pinterest, boosting its stock.
Ziff Davis shares surged 74% after agreeing to sell its connectivity division for $1.2 billion.
AutoZone fell over 5% due to disappointing Q2 results attributed to winter storms and tariffs.
NRG Energy dropped about 8% following a large shareholder sale.
Kontoor Brands jumped nearly 15% on strong Q4 earnings and revenue that topped expectations.
Surgery Partners shares tanked nearly 17% after issuing weak 2026 guidance.
Cigna's stock tumbled 5% with the announcement of CEO David Cordani's retirement.
Ingram Micro soared 18% on strong Q4 performance, a dividend increase, and a buyback authorization.
MongoDB plunged about 22% after providing Q1 guidance below analyst expectations.
Target jumped about 5% on better-than-expected Q4 earnings.
Best Buy rallied 5% despite revenue falling short of consensus.
On Holding dropped more than 10% after its 2026 guidance disappointed investors.
Plug Power surged more than 15% on strong Q4 sales and better-than-expected losses.
Credo Technology dropped more than 18% after its Q4 gross margin forecast was slightly below estimates.
Tidewater gained 7% after raising its full-year guidance.
Archer Aviation saw shares drop more than 12% due to wider-than-expected Q1 loss estimates.

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