AppLovin (APP) will replace MarketAxess in the S&P 500 Index on Sept 22, S&P Dow Jones Indices said. Despite strong Q2 earnings and a 51% YTD rally, retail sentiment on Stocktwits stayed 'neutral' amid past short-seller allegations. Shares closed at $490.24 Friday, valuing the adtech firm at $165.8B. Consensus price target: $501.76, just 2% higher.