If you hold Illumina (ILMN) stock, circle Sept. 21 on your calendar. That is the day Illumina officially joins the S&P 500 ($SPX), one of the most closely followed stock indices in the world.
S&P Dow Jones Indices announced the index rebalancing change on Friday. Illumina will be added to the benchmark alongside Bloom Energy (BE) and Everpure (P). The three companies are replacing Molson Coors Beverage (TAP), The Trade Desk (TTD), and Builders FirstSource (BLDR).