Tesla Inc. TSLA, -10.34% is laying off about 9% of its workforce, according to online publication Electrek, citing sources familiar with the matter. The round of layoffs started on Monday and it is going to be made official today, Electrek said. The layoffs affect only salaried employees and no production employees will be let go as the company is focused on increasing Model 3 production. Tesla shares rose more than 4% Tuesday, on track for their highest close since February 27 and up four of the past five days. Tesla did not immediately return a request for comment.