Block Inc. is set to join the S&P 500 index on July 23, 2025, potentially triggering a 759% surge in trading volume. JPMorgan analyst Min Moon forecasts a net demand of 54.2 million shares as S&P 500 index funds are expected to purchase approximately 70.9 million shares. Meanwhile, funds tracking the S&P Composite index will sell about 16.7 million shares due to Block's removal from their benchmark. JPMorgan has increased its price target for Block from $60 to $90, highlighting the company's accelerating product development and marketing efforts. The inclusion in the S&P 500 is anticipated to enhance Block's visibility and attract investor interest, though long-term performance will hinge on the company's execution and fundamentals.