What happened Shares of Appian (NASDAQ: APPN), Pinterest (NYSE: PINS), and MongoDB (NASDAQ: MDB) were falling this morning as the broader tech sector tumbled in response to rising bond yields. Investors have, in general, been selling technology stocks over the past few months as bond yields have risen, fearing that increased rates will lead to inflation. For example, shares of bank stocks and airlines are looking increasingly appealing to investors as they anticipate Americans getting back to relative normal later this year.