All three major US stock indexes were up in late-morning trading Tuesday, as investors continue to monitor developments in Iran and the Strait of Hormuz.

In company news, Delta Air Lines (DAL) on Tuesday projected total Q1 revenue of $15 billion to $15.30 billion, up from $14.04 billion a year ago. The airline also forecast Q1 adjusted revenue of $13.90 billion to $14.20 billion, up from $12.98 billion a year earlier. Analysts polled by FactSet expect Q1 revenue of $13.82 billion. Delta shares were up 4.3% around midday.

Uber Technologies (UBER) and Nvidia (NVDA) said late Monday they plan to roll out a global fleet of autonomous vehicles powered entirely by L4 software from the chipmaker in H1 2027. The initial deployment will occur in Los Angeles and San Francisco before expanding to 28 cities globally by 2028, they said. Uber shares were up 4.8%, while Nvidia shares were down 0.6%.

Nebius Group (NBIS) said Tuesday it plans to offer $3.75 billion in convertible senior notes in a private placement to qualified institutional buyers. The offering includes $2 billion of notes due 2031 and $1.75 billion of notes due 2033, with an over-allotment option of up to $300 million for the 2031 notes and $262.5 million for the 2033 notes. Separately, CrowdStrike (CRWD) and Nebius said Tuesday they have entered into a partnership to integrate the CrowdStrike Falcon platform into Nebius' AI cloud environment. Nebius shares were down 11.5%, while CrowdStrike shares were up 2.5%.

Mastercard (MA) said Tuesday it has agreed to buy stablecoin infrastructure provider BVNK for up to $1.80 billion, including $300 million in contingent payments. The deal is expected to be completed by the end of the year, the company said. Mastercard shares were up 0.7%.

Six Flags Entertainment (FUN) is being urged by activist investor Jana Partners to explore a sale and immediately appoint a new chairman of its board of directors, Reuters reported Tuesday, citing a letter it reviewed. Six Flags shares were up 6.9%.

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