In the last trading session, U.S. stocks inched up thanks to strength in oil prices. Among the top ETFs, investors saw SPY go up 0.16%, DIA gain 0.11% but QQQ decline 0.25% 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:

(IHF Quick QuoteIHF - Free Report) : Volume 3.26 times average

This healthcare ETF was under the microscope yesterday as more than 225,500 shares moved hands. This compares with an average trading day of around 72,000 shares and came as IHF remained broadly flat in the session.

The movement can largely be blamed on  the failure of a couple of important drugs in clinical trials that can have a big impact on the healthcare stocks like what we find in this ETF portfolio. IHF was up 3.6% in the past one month and currently has a Zacks ETF Rank of 1 or ‘Strong Buy’ rating with a Medium risk outlook.

(DGRW Quick QuoteDGRW - Free Report) : Volume 2.60 times average

This U.S. Quality Dividend Growth ETF was in the spotlight yesterday as almost 237,800 shares moved hands. This compares to an average trading day of 94,000 shares. DGRW was down about 0.2% in the session.

The movement can largely be attributed to a slump in bond yields which made the dividend-focused funds more attractive. DGRW rose 2.4% in the past one-month period. The fund currently has a Zacks ETF Rank #2 or ‘Buy’ rating with a Medium risk outlook and may be interesting for longer-term investors.

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