A trader watches Twitter stock on the day of its IPO in 2013.

On Thursday, shares of social media company Twitter dropped below their IPO price of $26. The intraday low was $25.94 a share. Shares later ended the day down 5.8 percent at $26.

Twitter went public on Nov. 7, 2013, and ended its first trading day at $44.94 (up 72.84 percent).