Reddit Joins S&P 500 on Aug. 18 After Shares Jump 13%

Reddit shares jumped about 12.6% in after-hours trading on Aug. 14 after the company said it will be added to the S&P 500 on Aug. 18, according to AP.

Reddit, Inc. (NYSE: RDDT) confirmed the inclusion in a company statement, noting the change takes effect prior to market open on Aug. 18 as an off-cycle index addition prompted by the acquisition of a current S&P 500 constituent (press release).

Reddit’s S&P 500 inclusion: confirmed details

Reddit said RDDT will enter the S&P 500 before the opening bell on Aug. 18.

The company described the move as an off-cycle addition triggered by the acquisition of an existing S&P 500 member, which created a vacancy in the benchmark index. The announcement came via a corporate press release distributed on Aug. 14.

What the inclusion means for trading

Market reaction was immediate, with RDDT up about 12.6% after hours on Aug. 14 following the announcement, per AP.

Inclusions of this kind typically draw interest from index-tracking funds and benchmark-aware managers who align portfolios with the S&P 500. That process can increase trading volume, liquidity, and short-term volatility around the effective date as funds adjust exposures. Pricing in the closing auctions ahead of the change often becomes a focus as passive and active flows concentrate.

… Continue reading the full article at the original source below.