Check out the companies making headlines in premarket trading. Tesla – The electric vehicle stock gained nearly 6% before the bell after second-quarter deliveries came in ahead of Wall Street estimates. Atlassian Corporation — Shares advanced nearly 2% following an upgrade to overweight from Piper Sandler. Analyst Rob Owens opined that the software stock could find growth as consumers migrate their data to the cloud. Owens added that the stock’s current price is an attractive entry point for investors. Paramount Global — Stock in the legacy media company climbed more than 3% following news that its streaming arm was in talks with several companies concerning a potential merger. One of the parties involved is Warner Bros Discovery , a deal that would potentially see Paramount+ merge with Max, CNBC previously reported . D.R. Horton , Lennar Corporation — Both home construction stocks were more than 2% lower on Tuesday on the heels of a downgrade to neutral from Citi. Analyst Anthony Pettinari noted that “there is much to like about DHI and LEN (share gain, strong cash flows, resilient GM), we see risk and reward in 2H as roughly balanced, and move to the sidelines.” CrowdStrike Holdings — The cybersecurity company declined 2% after Piper Sandler downgraded shares to neutral from overweight. The firm cited high valuations and no near-term catalyst for further increases. — CNBC’s Samantha Subin and Hakyung Kim contributed reporting.