In the last trading session, U.S. stocks were mostly in the green despite the uncertainty over the rate hike in the ongoing Fed meeting. Among the top ETFs, investors saw SPY gain about 0.1%, (DIA Quick QuoteDIA - Free Report) add about 0.04% and (QQQ Quick QuoteQQQ - Free Report) advance about 0.2% on the day.

Two more specialized ETFs are worth noting in particular though as both saw trading volume that was far outside of normal. In fact, in the most recent trading session, both these funds experienced volume levels that were more than double their average. This could make these ETFs the ones to watch out for in the days ahead to see if this trend of extra interest continues:

(URTH Quick QuoteURTH - Free Report) : Volume 3.58 times average

This developed market ETF was in focus yesterday as roughly 160,000 shares moved hands compared with an average of roughly 44,500 shares. URTH lost about 0.3% on the day.

The heightened uncertainty in the market regarding the timing of the Fed rate hike and the outcome of the Bank of Japan meeting put this world ETF in the spotlight. In the last one-month period, URTH was down about 0.3%.

(SHV Quick QuoteSHV - Free Report) : Volume 3.29 times average

This short-term U.S. Treasury ETF was under the microscope on Tuesday as nearly 2.7 million shares moved hands. This compares to an average trading volume of 806,800 shares and came as SHV gained about 0.04% in the session.

The movement can be credited to the dimming prospect of a sooner-than-expected rate hike following a set of downbeat U.S. economic indicators. In the last one-month period, SHV was flat. The fund has a Zacks ETF Rank #3 (Hold).

Want more information on the world of ETFs? Make sure to check out the podcast below where we discuss the investing landscape with Kevin O’Leary and Connor O’Brien of O’Shares Investments:

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