Investors managed to make it through a volatile April modestly ahead of the game, though individual returns were held back by one principal culprit: Apple.

The tech giant was "the biggest wealth destroyer" for market participants during the month, according to Openfolio, a social networking platform that compares more than 65,000 shared portfolios within its community.

In an April where the managed to eke out a nearly 1 percent gain, Openfolio portfolios on average gained 1.3 percent. Both gains would have been even more if not for Apple, which fell nearly 14 percent in April and, as of the market close Monday, had suffered losses for eight straight days.

Apple's decline hits especially hard because it is both the most-owned stock on Openfolio and atop the favorites list for mutual funds. Apple appears in more than 27 percent of Openfolio portfolios, while mutual funds own 28.1 percent of its shares, according to FactSet. Some 363 mutual funds owned the stock as of the end of 2015, a decline of four from the previous quarter, with Microsoft the second most-popular and Alphabet third, according to Credit Suisse.