Futures are pointing to a partial relief rally after Tuesday’s rout on Wall Street. Here’s what we’re watching before Wednesday’s trading heats up.

• Major technology shares that closed with losses on Tuesday were inching higher premarket.

  Microsoft,

  Google parent

  Alphabet

  and

  Apple

  each gained 0.5%, and chip maker

  Nvidia

  climbed 1%.

• Micron Technology

  slipped 3.1% premarket. The memory chip maker beat expectations in its recent quarterly earnings but failed to impress Wall Street with its outlook.

• Shares of discount retailer

  Dollar Tree

  jumped 6.4% premarket after the company said early Wednesday that it had added about $1 billion to its share repurchase plan.

• Computer hardware maker

  HP

  slid 1.7% premarket. JPMorgan cut its rating and price target for the stock.

• Jabil

  shares were down 2.2% premarket. The electronics manufacturer said profit rose in the recent quarter and issued a financial outlook for the coming quarter in line with Wall Street expectations.

• Bitcoin edged up 0.6% on Wednesday from its 5 p.m. ET price on Tuesday, and popular crypto wallet provider

  Coinbase

  added 0.9% premarket.

• Major U.S. airlines were inching higher ahead of the bell, with

  American Airlines

  up 0.7%,

  Delta Air Lines

  up 0.8%,

  United Airlines

  up 0.5% and

  Southwest Airlines

  up 0.5%.

• Vaccine makers that were hit in Tuesday’s market decline were staging a rebound.

  Moderna

  gained 2.4% premarket and

  Novavax

  climbed 3.1%.

• Cal-Maine Foods

  climbed 3.1% premarket. The egg producer’s losses narrowed in the fiscal first quarter as sales rose 13% due to higher selling prices.

• Landec

  and

  Herman Miller

  will report results after Wednesday’s close.

Chart of the Day

• A swift rise in government-bond yields is hitting shares of technology stalwarts that have powered major indexes higher for years, testing investors’ faith in some of the stock market’s most popular trades.

Write to James Willhite at james.willhite@wsj.com

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