NEW YORK (TheStreet) -- Welcome to Don Dion's "Daily ETF Winners and Losers." Be sure to stop by each day to find out which ETFs are gaining or losing.
iShares FTSE NAREIT Mortgage Plus Capped Index Fund ( REM) -3.1% Notable losses from top holdings Annaly Capital Management ( NLY) and American Capital Agency Corp ( AGNC) are weighing heavily on the performance of REM. This fund highlights the challenges that come with owning a top-heavy ETF. REM dedicates over a third of its portfolio to the two companies mentioned above. NLY alone accounts for more than a quarter. All prices as of 2:15 PM EST Written by Don Dion in Williamstown, Mass.