In the last trading session, U.S. stocks were in the red. Among the top ETFs, investors saw (SPY Quick QuoteSPY - Free Report)  lose 0.71%, (DIA Quick QuoteDIA - Free Report)  shed about 0.9%, and (QQQ Quick QuoteQQQ - Free Report)  move lower by about 0.5% 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 the ones to watch out for in the days ahead to see if this trend of extra-interest continues:

CIU: Volume 3.87 times average

This intermediate corporate bond ETF was in the spotlight on Wednesday as about 1.34 million shares moved hands compared with an average of 345,300 shares a day. We also saw some price movement as CIU gained about 0.1% last session. The move was probably the result of a decline in benchmark U.S. Treasury yields amid trade tensions. CIU has gained 0.2% in the past month.

SGDM: Volume 3.02 times average

This gold mining ETF was under the microscope on Wednesday as nearly 67,800 shares moved hands. This compares with an average trading day of roughly 22,470 shares and came as SGDM lost about 2.8% in the trading session. The fund has lost about 3.9% in a month’s time.

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