Emerging markets have significantly outperformed U.S. stocks over the past month, and some options traders are positioning for a pullback.
In a single transaction, a large investor purchased 20,000 September 30 puts in the MSCI Emerging Markets exchange traded fund for $2.79, according to OptionMonster's monitoring system. The trade dwarfed the strike's existing open interest of 754 contracts.
The ETF has rallied almost 15 percent in the past month, compared with a 9 percent gain for the S&P 500. Investors may be looking to hedge recent profits or bet on a pullback after the index leapt Monday above $30, its highest price since early October. EEM is up 1.3 percent to $31.22 in midday Wednesday trading.
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Major Nation ETFs:
iShares FTSE/Xinhua China 25 Index
iShares MSCI Brazil Index
iShares MSCI Japan Index
iShares MSCI Taiwan Index
David Russell is a reporter and writer for .