Trade Desk stock rallies on news it will join S&P 500 index on July 18th. Here's why index inclusion is meaningfully positive for TTD shares.

Wedbush believes perception around Trade Desk ( NASDAQ: TTD) has "improved modestly" following the announcement of the company's inclusion in the benchmark S&P index ( SP500) late on Monday. Shares of the company are up 14% at $86 in premarket trading on Tuesday. Stock is set for its best open since Feb 12, 2025, at over a five-month high.

Shares of Trade Desk Inc (NASDAQ:TTD) are up 11.4% to trade at $84.06 this morning, after news broke that the software firm will replace Ansys (ANSS) on the S&P 500 Index (SPX) before the open this Friday,