The online auto retailer's inclusion is well deserved.Carvana (CVNA +1.86%) shares jumped a significant 12% on Monday, fueled by the news of its inclusion in the S&P 500, bringing its year-to-date gains to 125%.The online used car retailer underwent key changes in operational efficiency and financial management in 2023, resulting in the stock surging an astounding 9,540% since January 2023. What's the benefit?Carvana's inclusion in the S&P 500, a highly regarded index, triggered passive funds and ETFs that ...