Shares of Twitter Inc. surged on Wednesday, after Morgan Stanley disclosed a large stake in the social-media company, according to a 13G filing.

Twitter stock (TWTR) jumped as much as 4.8 percent in its biggest one-day percentage gain in more than a month. It is on track for its third straight daily gain. Shares of peer Snap Inc. climbed 4 percent.

Morgan Stanley revealed a 5.6 percent stake in Twitter, according to the filing. Based on Bloomberg data, the investment bank owns more than 43.3 million shares, making it the third-largest shareholder behind Vanguard and BlackRock.

Twitter shares have gained more than 10 percent thus far this year. Last week, it gave a lackluster first-quarter sales forecast and reported tepid user growth.