In the last trading session, the U.S. stocks fell for the third consecutive day amid lingering global growth fears. Among the top ETFs, investors saw (SPY - ETF report), (DIA - ETF report) and (QQQ - ETF report) losing each 0.4% on the day.

Two more specialized ETFs are worth noting 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:

(ITOT - ETF report): Volume 3.73 times average

This total U.S. market ETF was in focus yesterday as more than 756,000 shares moved hands compared with an average of roughly 214,000 shares. We also saw some price movement as ITOT lost 0.3% in the last session.

The movement can largely be blamed on heightened volatility and weakness in the industrial sector that can have a big impact on the broad stocks like what we find in this ETF’s portfolio. For the past one-month period, ITOT was up nearly 2.2%.

(IEMG - ETF report): Volume 3.05 times average

This emerging market ETF was under the microscope yesterday as about 13 million shares moved hands. This compares with an average trading day of around 4.4 million shares and came as IEMG lost 0.4% in the session.

The big move was largely the result of the Federal Reserve Chair Janet Yellen speech that it is on track to raise interest rates for the first time in nearly a decade. IEMG was up 4.25% in the past one-month period and currently has a Zacks ETF Rank of 3 or ‘Hold’ rating with a Medium risk outlook.

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