In the last trading session, Wall Street was extremely downbeat. Among the top ETFs, SPY declined 1.2%, DIA retreated about 1% while QQQ moved 0.8% lower 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.

(SHY Quick QuoteSHY - Free Report) : Volume 2.57 Times Average

This short-term U.S. treasury bond ETF was under the microscope as about 15.97 million shares moved hands. This compares with an average trading volume of roughly 6.21 million shares and came as SHY lost about 0.1% in the last trading session. SHY is down 1.2% in a month’s time.

(DLN Quick QuoteDLN - Free Report) : Volume 3.88 Times Average

This large-cap dividend ETF was in the spotlight as around 837,507 shares moved hands compared with an average of 216,000 shares a day. We also saw some price movement as DLN lost 1.1% in the last session. DLN has slumped 7.2% over the past month.