Shares of Tesla (TSLA) are on the rise in after-hours trading after the car maker reporting production and deliveries for the first quarter. WHAT’S NEW: Tesla said it produced nearly 103,000 vehicles and delivered roughly 88,400 vehicles in the quarter, which is its “best ever” Q1 performance. Tesla noted that Model Y production started in January and deliveries began in March, “significantly” ahead of schedule. “Our delivery count should be viewed as slightly conservative, as we only count a car as delivered if it is transferred to the customer and all paperwork is correct,” the company said. “Final numbers could vary by up to 0.5% or more. Tesla vehicle deliveries represent only one measure of the company’s financial performance and should not be relied on as an indicator of quarterly financial results, which depend on a variety of factors, including the cost of sales, foreign exchange movements and mix of directly leased vehicles.” WHAT’S NOTABLE: Earlier today, Jim Chanos of Kynikos Associates said that Tesla remains a “maximum short” position at his firm, adding that the short continues to be one of his “favorite” positions. Chanos said that while Tesla is not an insolvency story, it “has a market cap,” and that it likely won’t have 1M robotaxis this year as promised. PRICE ACTION: After closing the regular trading session down 5.63%, Tesla shares are up over 20% in after-hours trading.