In the last trading session, U.S. stocks were mixed. Rate hike worries in the U.S., the impending start of the all-important holiday shopping season and supportive policies in other developed economies set the tone for the global investing backdrop. Among the top ETFs, investors saw SPY lose 0.01%, DIA shed 0.03% and QQQ move higher by about 0.09% on the day.

Two more specialized ETFs are worth noting in particular though as both saw trading volume that was far outside of normal. In fact, both these funds experienced volume levels that were more than double their average for the most recent trading session. This could make these ETFs ones to watch out for in the days ahead to see if this trend of extra interest continues:

(IEI – ETF report): Volume 5.29 times average

This 3?7 year U.S. Treasury bond ETF was in focus on Wednesday as roughly 2.8 million shares moved hands compared to an average of roughly 530,500 shares. We also saw some stock price movement as IEI lost 0.01%.

The movement can largely be blamed on the slump in prices of U.S. treasuries prices thanks to rising bond yields instigated by looming Fed tightening. In the last one-month period, IEI was down 1.1%. The fund carries a Zacks ETF Rank #3 (Hold).

(DFE – ETF report): Volume 3.06 times average

This small-cap Europe dividend ETF was under the microscope on Wednesday as nearly 500,000 shares moved hands. This compares to an average trading volume of 150,000 shares and came as DFE gained about 0.2% in the session.

The movement can largely be attributed to investors’ inclination toward dividend-paying small-cap securities in the European market as the economy is rebounding slowly on accommodative policies and the ECB is considering more easing to boost inflation. In the last one-month period, DFE was down about 2.8%.