In the last trading session, U.S. stocks were in the red. Among the top ETFs, investors saw (SPY Quick QuoteSPY - Free Report) , (DIA Quick QuoteDIA - Free Report) and QQQ shed about 1.8%, 2.2% and 1.8%, respectively, 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:

(ROM Quick QuoteROM - Free Report) : Volume 3.91 Times Average

This leveraged technology ETF was in the spotlight yesterday as nearly 364,056 shares moved hands compared with an average of 93,000 shares a day. We also saw considerable price movement as ROM lost about 3.3% in the last session.

The big move was largely the result of the mounting selloffs in the tech space owing to rising rate concerns, U.S.-Sino trade war and downbeat earnings and production reports from sector some biggies. ROM has lost 7.5% past month.

(USO Quick QuoteUSO - Free Report) : Volume 3.16 Times Average

This WTI crude oil ETF was under the microscope yesterday as about 71.98 million shares moved hands. This compares with an average trading day of roughly 22.78 million shares and came as USO shed about 7.2% in the trading session.

Concerns about rising output amid softer-than-expected U.S. sanctions on Iran and falling demand from global growth worries weighed on oil prices. The fund was down about 23.5% in a month’s time.

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