Emerging markets had been the darlings of the financial world between 2009 and early 2013, driven by a belief that countries such as China and Brazil would lead global growth in the next few years, while developed world economies would remain nearly stagnant.
But emerging markets investors have turned nervous for many reasons, from the U.S. Federal Reserve's pullback in its bond buying program to upcoming elections in India, Brazil, Turkey, Indonesia and elsewhere. The street battles between protesters and the authorities in Ukraine, turmoil over elections in Thailand, and bomb blasts in Egypt are not helping either.
So jittery are investors that a shock 425-basis-point hike in interest rates by Turkey's central bank last week did not even buy the currency a 24-hour reprieve before selling started again.
(Read more: Fed volatility isemerging markets' 'poison': Analyst)
Illustrative of this is the iShares MSCI Emerging Markets fund, which is down 9.7 percent in 2014 through Wednesday. The ETF—the second-most actively traded in the United States—ended last year down 5.8 percent and rose 17 percent in 2012.
Fund investors worldwide pulled $6.4 billion from emerging market stock funds in the week ended January 29, their biggest outflows since August 2011, according to data from a Bank of America/Merrill Lynch Global Research report.
And investors and analysts say that the debt markets can be just as treacherous.
"I'd advise only those investors with much higher risk tolerances to invest in emerging market debt as they become much more volatile," David Sekera, corporate bond strategist with Morningstar, said on a webcast.
Brazil, bane or benefit?
Brazil, Latin America's largest economy, has dragged down many funds this year, including T. Rowe Price's Latin America Fund, which has declined about 11 percent.
The Dreyfus Brazil equity fund and the Fidelity Latin America fund are also both down about 11 percent.
Investors are still not swayed, however, to trim their exposure in Brazil.
(Read more: Is the emerging market selloff a buying opportunity?)
"Even after the 13-14-15 percent declines, I am sticking with my big bets. I am thinking long-term," said Jose Costa Buck, who oversees the T. Rowe fund, adding that he plans to hold many of his stocks for "at least three years."
BlackRock's Landers shares the same sentiment and sees opportunity in the selling pressure. He said in an email to Reuters: "For a long-term investor, this offers an opportunity to buy some cheap stocks," citing Vale, down about 6 percent so far in 2014; Itau, down about 0.4 percent; and Ambev, down about 9.5 percent.
Brazil is also grappling with other concerns, from outdated infrastructure to a stubbornly high inflation rate, and a reputation for state intervention that has spooked many investors.
Landers cautioned that significant improvements in the Brazilian economy probably will not happen until after the October presidential election.
Scott Mather, head of global portfolio management at Pimco, also signaled he sees the declines as an opportunity. He tweeted on Wednesday: "Indiscriminate selling in EM bonds & panic buying of developed world is subsiding. Time for value investors to consider stepping in."
Dreyfus and Fidelity declined to comment.
Latin America is not the only weak spot: Funds focused on Russia, China, emerging Europe, and some other emerging market areas, are also down 9 percent or more so far this year.
Some hedge funds have not been immune to the plunge.