https://www.reuters.com/article/us-panasonic-results/tesla-up-20-after-panasonic-posts-1st-quarterly-profit-at-battery-business-idUSKBN1ZX0MO >Tesla Inc's stock surged 20% on Monday in its largest one-day gain since 2013, fueled by a quarterly profit at Panasonic's battery business with the U.S. car maker and an investor report predicting its shares would rise more than ten-fold by 2024.