Facebook closed more than 20 percent off its 52-week high, Twitter dropped to 24 percent off its 52-week high and Snap cratered nearly 40 percent off its 52-week high.
Facebook is still reeling after a massive data leak by research firm Cambridge Analytica and questions about user privacy, while Snap is facing criticism over the recent redesign of its Snapchat app — one Wall Street firm said Monday that students called the redesign "annoying."
"The market pullback and the post Facebook-Cambridge [Analytica] aftermath has been the 'one-two punch' of bad news that has scared the bulls," GBH Insights' Dan Ives told CNBC. "With tech leaders such as Amazon under attack on a daily basis from Trump, and Facebook going through a white knuckle period, as well as the social media names post the Cambridge debacle, this has been a worrisome period for tech investors."
"We believe this is more of a pullback rather than the start of a broader game changer direction for tech stocks," Ives said.
The coming weeks will be a "hand-holding time for tech," he said.
Still, the S&P tech sector is the top-performing sector year to date, gaining less than a percent so far in 2018.
Disclosure: CNBC parent NBCUniversal is an investor in Snap.