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Investors rebel against rate hikes in South Africa, Turkey

Interest rate hikes in Turkey and South Africa

Markets are waging war against central bankers.

After initially rising, U.S. stock futures sold off sharply as selling returned to emerging markets, reversing gains in currencies that were boosted by the Turkish central bank's sharp rate hike.

An employee uses a machine to count a bundle of 100 Turkish lira banknotes inside a currency exchange office in Istanbul, Turkey.
Kerim Okten | Bloomberg | Getty Images
An employee uses a machine to count a bundle of 100 Turkish lira banknotes inside a currency exchange office in Istanbul, Turkey.

"I think that on the flip side of the rate hikes, where people thought this would stabilize things, the extent of the hikes are now freaking people out. The Turkish lira is getting slammed now and the South Africa is getting slammed now," said Peter Boockvar, chief market analyst with the Lindsey Group.

South Africa on Wednesday followed Turkey's rate hike with a half percentage point boost, taking its repo rate to 5.5 percent. Turkey surprised markets with a massive hike, taking its benchmark to 12 percent from 7.75 percent late Tuesday. This came on the heels of a rate hike in India on Tuesday, which helped steady markets ahead of Turkey's rate decision.

(Watch: Cramer: Turkey's interest rate hike won't work)

The latest rout comes on a day that the Fed is widely expected to announce it will taper its bond buying program by another $10 billion, taking it to a $65 billion monthly program. Traders say the Fed's move away from the easy money policy has aggravated the situation in emerging markets and has caused market readjustments across the globe in anticipation of rising U.S. interest rates.

(Read more: Fed poised for $10 bln taper as Bernanke bids adieu)

"These big currency defenses either work quickly because there are these big short positions you can squeeze, or they fail slowly," said Robert Sinche, global head of currency strategy at Pierpont Securities." They may be able to keep rates at 10 percent or 12 percent for a while but with inflation at about 5 percent, eventually this will wear down on the economy."

South Africa's rate hike was seen as insufficient by the market and it further soured the mood, as the rand fell.

(Watch: Not all emerging markets are at risk: Citi)

"The currency defense through interest rates can work in the short run, but you have to back it up with structural changes to shrink the current account deficit," said Sinche. "You're looking at places that have current account deficits that need capital inflows, and they don't have the political will or political stability to make structural changes and that's the problem, and we're back to where we are wondering if there are enough of those problems where it becomes a macro issue."

Sinche said sentiment about the emerging world has shifted, and investors have been hunting out the weak links and are shorting them.

(Watch: Ford CEO: Emerging markets are a concern)

—By CNBC's Patti Domm. Follow her on Twitter @pattidomm.

  • Patti Domm

    Patti Domm is CNBC Executive Editor, News, responsible for news coverage of the markets and economy.

  • A CNBC reporter since 1990, Bob Pisani covers Wall Street from the floor of the New York Stock Exchange.

  • CNBC's Senior Personal Finance Correspondent

  • JeeYeon Park is a writer for CNBC.com. Follow her on Twitter: @JeeYeonParkCNBC

  • Rick Santelli joined CNBC Business News as an on-air editor in 1999, reporting live from the floor of the Chicago Board of Trade.

  • Senior Producer at CNBC's Breaking News Desk.