https://www.reuters.com/article/us-bright-health-ipo/tiger-global-backed-bright-health-aims-for-over-14-billion-valuation-in-u-s-ipo-idUSKCN2DR1HG >Bright Health Group, a health insurtech firm backed by Tiger Global and Blackstone, is aiming for a valuation of more than $14 billion in its U.S. initial public offering, according to a regulatory filing on Tuesday.