According to the latest comScore figures, Bing has increased its search market share for the 10th straight month in March, moving to 11.7 percent, a slight increase from 11.5 percent in February.
Yahoo moved up slightly as well, to 16.9 percent from 16.8 percent in February.
Despite seeing a decrease in March, Google remained the clear leader, at 65.1 percent. The search giant held 65.5 percent in February.
In fourth place was Ask which increased again, to 3.8 percent from 3.7 percent.
Alongside a giant $100 million USD advertising campaign, Microsoft launched Bing last June, revamping its struggling "Live" search engine.