In the last trading session, U.S. stocks were in the green with the start of the Santa Claus rally on the back of upbeat holiday shooing data and an oil price jump. Among the top ETFs, investors saw (SPY Quick QuoteSPY - Free Report)  adding about 4.96%, (DIA Quick QuoteDIA - Free Report)  gaining about 4.98% and (QQQ Quick QuoteQQQ - Free Report)  move higher by 5.84% on the day.

Two more specialized ETFs are also worth watching 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 of the last 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: Volume 3.62 times average

This all-cap blend U.S. equity ETF was under the microscope yesterday as about 9.38 million shares changed hands. This compares to the average trading volume of around 2.59 million shares and came as ITOT gained about 4.79% in the session. A broader equity market jump led to this outsized volume. The fund has lost about 8.8% in the past one month.

VYM: Volume 3.73 times average

This U.S. ETF, consisting of stocks of companies that payout dividends that generally are higher than average, was in the spotlight yesterday as 5.90 million shares moved hands compared with an average of roughly 1.58 million shares a day. The fund added about 4% in the last trading session and has been down about 9% in the past one month.

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