In the last trading session, U.S. stocks were mostly in the red. Among the top ETFs, investors saw (SPY Quick QuoteSPY - Free Report) lose over 0.8%, DIA shed around 0.6% and (QQQ Quick QuoteQQQ - Free Report) shed about 0.8% 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, in the most recent trading session, both these funds experienced volume levels that were more than double their average. This could make these ETFs the ones to watch out for in the days ahead to see if this trend of extra interest continues:

(GYLD Quick QuoteGYLD - Free Report) : Volume 4.16 times average

This multi-asset ETF was in focus yesterday as over 150,000 shares moved hands compared with an average of roughly 37,000 shares. GYLD lost about 0.3% on the day.

The fund was possibly under the radar as it yields about 7.34% annually and gives exposure to several asset classes including equity, debt and global alternatives for the diversification benefit. In the last one-month period, GYLD was up over 3.6%.

(TLTD Quick QuoteTLTD - Free Report) : Volume 3.71 times average

This developed international market ETF was under the microscope yesterday as nearly 150,000 shares moved hands. This compares with an average trading volume of 40,000 shares and came as TLTD lost about 0.1% in the session. In the last one-month period, TLTD was up over 1.7%.

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