The stock will be added at its full float-adjusted market capitalization before the open of trading on Dec. 21, the index provider said. Float-adjusted means that only shares available to the public are considered when evaluating a company’s weighting. The company that Tesla will replace will be named on Dec. 11, according to a press release.
“In its decision, S&P DJI considered the wide range of responses it received, as well as, among other factors, the expected liquidity of Tesla and the market’s ability to accommodate significant trading volumes on this date,” the index provider said. Tesla’s addition to the S&P 500 will coincide with the expiration of stock options and stock futures, among other financial instruments, which should help facilitate the addition because of the high trading volume that day.