Shares of The Trade Desk Inc. (NASDAQ: TTD) climbed 9.7% Wednesday despite no news regarding the precision digital ad targeting company.
The S&P 500 and NASDAQ both had a reasonably strong day, hitting intraday records and closing comfortably higher. But there were no new Trade Desk press releases, analyst upgrades, insider purchases, or SEC filings of the sort that tend to drive significant upward moves like this one.