▶D1 Capital has approximately $25 billion in AUM, with about two-thirds allocated to private companies and $10 billion to public equities, as stated in claims [5] and [19].May 2026

▶Following the January 2021 GameStop event, D1 Capital halted all short-selling for about a year, as confirmed by claims [4] and [16]. The event caused some of its short positions to increase 400% in two weeks without fundamental changes, per claims [11] and [26].May 2026

▶The firm's hiring strategy almost exclusively targets professionals from private equity with no prior public market investing experience, a point made in claims [14] and [27].May 2026

▶Founder Dan Sundheim personally makes the final decision on over 95% of the firm's investments and trades, according to claims [2] and [31].May 2026

▶Analysts at D1 Capital are required to maintain a weekly 'mock portfolio' of their ideas, and its performance is a factor in their compensation, as detailed in claims [12], [24], and [28].May 2026

▶There is a strategic evolution in D1 Capital's short-selling approach. Before January 2021, the strategy was more concentrated, but after a one-year pause post-GameStop, the firm adopted a highly diversified portfolio of many smaller positions to mitigate risk [20], which has reportedly produced comparable or better short alpha [8, 30].May 2026

▶A contrast exists between the firm's hiring profile and employee development timeline. D1 Capital specifically recruits analysts without public equity experience [14, 27], but founder Dan Sundheim estimates it takes approximately three years for these hires to become fully contributing team members [1, 7].May 2026

▶The firm exhibits a dual focus between public and private markets. While two-thirds of its capital is in private companies [5, 19] and it is reluctant to sell its best private assets [3], it also operates a sophisticated long/short public fund [18] and is considering a new long-only public fund [29].May 2026