Stock futures inched lower Tuesday premarket amid fresh Iran conflict escalation, as President Donald Trump hinted at a prolonged U.S.-Israel campaign, stating Washington will do “whatever it takes.”
Here are some of Tuesday’s biggest stock movers:
Biggest stock gainers
- Plug Power (PLUG) +10% – Shares climbed after a Q4 earnings beat highlighted ~13% Y/Y revenue growth and a dramatic gross margin improvement from -122.5% in Q4 2024 to +2.4% in Q4 2025. The company reported a record $187M year for electrolyzer revenue in 2025 and cited an ~$8B global sales funnel, underscoring commercial momentum. Incoming CEO Jose Luis Crespo, effective March 2, 2026, said 2025 revenue reached $710M with the Q4 margin turning positive as projected, and reiterated targets of positive EBITDA in Q4 2026, positive operating income by end-2027, and full profitability by end-2028 while continuing to scale the business.
Biggest stock losers
- MongoDB (MDB) -24% – Shares plunged after issuing mixed guidance despite otherwise solid results, as investors focused on softer near-term expectations. The company projected Q1 FY2027 adjusted EPS of $1.15–$1.19, slightly below the $1.20 consensus estimate, while FY2027 adjusted EPS of $5.75–$5.93 came in above the $5.69 estimate, suggesting longer-term profitability strength but near-term moderation that weighed on sentiment.
- Credo Technology (CRDO) -8% – Shares dipped despite reporting FQ3 results and forward guidance above Wall Street expectations, suggesting elevated investor expectations heading into the print. The company guided revenue to $425M–$435M, modestly above the $428.5M consensus in FQ4, with adjusted gross margin projected at 64%–66% and adjusted operating expenses of $76M–$80M.
- Archer Aviation (ACHR) -6% – Shares slid after reporting a wider-than-expected Q4 EPS loss, though its adjusted EBITDA loss of $137.9M was within guidance, driven partly by higher personnel and vendor expenses. The company ended FY2025 with roughly $2.0B in liquidity and said it remains disciplined on spending as it scales operations. Archer is expanding its Midnight aircraft fleet and flight test program, with its newest aircraft progressing through VTOL testing ahead of piloted transition flights, and remains on track for piloted VTOL operations in the UAE and its first passenger-carrying flights later this year.