Trade Desk shares climbed 21.6% in premarket trading as investors responded to news that OpenAI may rely on external partners to sell ads on ChatGPT, following last month’s ad rollout. KeyBanc maintained an Overweight rating but lowered its price target from $40 to $35, and Piper Sandler kept a Neutral rating while cutting its target from $50 to $28, reflecting ongoing volatility in the ad-tech sector. The Trade Desk operates a programmatic advertising platform used by brands and agencies worldwide to purchase digital ad inventory across channels, positioning it to benefit if an OpenAI ad sales partnership materializes. CEO Jeffrey Terry Green purchased 6,398,089 Class A shares between March 2 and March 4 at weighted-average prices of $23.49 to $25.08 (trade range $22.93–25.25), totaling approximately $148.1 million while the stock traded near multi-year lows.