In the last trading session, U.S. stocks slipped on growing U.S.-China tensions. Among the top ETFs, (SPY Quick QuoteSPY - Free Report) lost 0.7% and (DIA Quick QuoteDIA - Free Report) shed 1.2%, while (QQQ Quick QuoteQQQ - Free Report) moved 0.3% 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.

(MGV Quick QuoteMGV - Free Report) : Volume 12.69 Times Average

This mega-cap value ETF was in the spotlight as around 2 million shares moved hands compared with an average of 421,000 shares a day. We also saw some price movement as MGV lost 0.8% in the last session.

The move was largely due to bouts of volatility and uncertainty in the stock market that could have a big impact on value ETFs like the ones we find in this ETF portfolio. MGV has gained 2.4% over the past month and has a Zacks ETF Rank #1 (Strong Buy) with a Medium risk outlook.

(XHS Quick QuoteXHS - Free Report) : Volume 7.84 Times Average

This healthcare ETF was under the microscope as nearly 55,000 shares moved hands. This compares with an average trading volume of roughly 9,000 shares and came as XHS gained 1.3% in the last trading session.

The movement can largely be blamed on investors’ flight to defensive investment. XHS has gained 13.4% in a month’s time and carries a Zacks ETF Rank #3 (Hold) with a Medium risk outlook.