Take a look at the top midday traders.

CarMax — CarMax shares dipped more than 8% after reporting a beat on revenue but a miss on earnings for the latest quarter. Auto retailer CarMax earned 98c per share below consensus estimates of $1.25 per shares.

CrowdStrike — Shares of the cybersecurity company jumped 3.7% after Goldman Sachs upgraded the stock to a “buy” from “neutral.” CrowdStrike was rated as neutral.

PG&E — Shares of the utility company rose 3% after it reached settlements to pay $55 million for two firesNorthern California. As part of the agreement, PG&E will not face any criminal prosecution.

Cisco Systems —  Shares of the network technology company fell about 1%, lagging behind the broader market, after Citi downgraded Cisco to sell from neutral. An analyst at Citi stated in a note that Cisco lost market share to its competitors.

Hewlett Packard Enterprise — Shares of Hewlett Packard Enterprise dipped 1% after Morgan Stanley downgraded the stock to underweight from equal weight and said it expects the stock to underperform over the next year.

Chegg — Shares of Chegg dropped 5.5% following a downgrade by KeyBanc Capital Markets. Chegg was downgraded by KeyBanc Capital Markets to sector weight, from overweight. This is because the company had reported less growth in the U.S. during its first quarter.

Chipotle — Shares of the restaurant chain rose 3.1% after Citi initiated coverage of the stockWith a Buy rating According to the firm, Chipotle was a leader in growth. 

Albertsons — The food retailer’s stock sank 6.7% after reporting earnings for the recent quarter. Albertsons beat expectations and reported 75c per share earnings, which was 11 cents more than consensus estimates.

Oil stocks — Energy stocks rose on Tuesday as oil prices, which have seesawed in recent weeks, jumped back above $100 a barrel. Marathon Oil, Devon EnergyAnd Occidental PetroleumThe respective increases were 5.5%, 4.7%, and 3.7%.

— CNBC’s Jesse Pound, Hannah Miao, Tanaya Macheel and Sarah Min contributed reporting