These are the top mid-day traders.

Twitter — Shares of the social media company rallied more than 3% after Twitter announced that Elon Musk will join its board of directors. Stocks rose 27% during the session, making it its highest day since Musk’s disclosure of a 9.2% share. Tesla CEO, Elon Musk said that Twitter would see “significant improvements” in the months ahead.

Carnival — The cruise stock rose more than 2% after Carnival said that March 28-April 3 was the busiest booking week in the company’s history. Carnival is now operating 22 of its 23 ships again following the end of the global pandemic that effectively stopped the cruise industry.

First Solar — The solar panel stock dropped 4.8% following a downgrade to underperform from neutral at Bank of America. In a note, the investment company stated that First Solar had received too much credit for a reality which has not yet materialized.

Ralph Lauren — Shares for the apparel retailer tumbled 3.7% in midday trading. Wells Fargo analysts downgraded Ralph Lauren’s stock to equal weight, from overweight. They said Tuesday that they are cautious about the sector’s future prospects. Analysts said that a drop in consumer spending would likely affect the retailer at mid-tier.

MarketAxess Holdings — Shares of the fixed income trading platform fell more than 9% after MarketAxess released its monthly volume statistics for March. This company saw its total credit monthly average daily volumes fall by 3% in March 2021.

Starbucks — Shares of the coffee chain fell another 4.1% on Tuesday, as Wall Street digested returning CEO Howard Schultz’s decision to halt the company’s stock buyback program. Stock fell by 3.7% Monday. Wedbush downgraded Starbucks to neutralIt stated in a note that outperform was lower than expected and said it wasn’t as certain about the earnings of its clients.

Coinbase — Shares of the crypto exchange sank 7.4% on Tuesday after investment firm Mizuho highlighted spending on nonfungible tokens as a rising cost for Coinbase. Mizuho also cut its price target on the stock.

Carvana — The used car dealer’s stock dropped more than 9% after a downgrade to sector performRBC Capital Markets. RBC stated in a note it doubted that Carvana’s financial fundamentals would support its expansion plans.

This report was contributed by Sarah Min and Yun Li of CNBC.