In the last trading session, U.S. stocks were mostly in the green. While there was no positive driver in particular, the bounce was mainly to set off Friday’s random sell-off. Among the top ETFs, investors saw SPY gain 0.13%, DIA add over 0.21% and QQQ move higher by 0.22% 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 ones to watch out for in the days ahead to see if this trend of extra interest continues:

SLYG: Volume 4.61 times average

This U.S. small-cap growth ETF was in focus yesterday as roughly 104,400 shares moved hands compared to an average of roughly 22,670 shares. We also saw some stock price movement as SLYG lost about 0.5%.

The movement can largely be blamed to the still-present risk-off trade sentiment which probably led investors to turn down the high volatile small-cap growth stocks. With a few U.S. economic data coming in the downside, investors also started to doubt the U.S. economic growth momentum and punished this ETF. In the last one-month period, SLYG was down over 9.3%. The fund carries a Zacks ETF Rank #3 (Hold).

SCHO: Volume 3.34 times average

This short-term treasury ETF was under the microscope yesterday as nearly 877,519 shares moved hands. This compares to an average trading volume of 262,810 shares and came as SCHO gained 0.02% in the session.

The move was largely the result of the muted yields even at the shorter end of the yield curve. In the last one-month period, SCHO was up about 0.3%. The fund carries a Zacks ETF Rank #3.