In the last trading session, U.S. stocks were in the green as investors digested the prospect of the Fed entering into the tightening process in next month’s meeting. Among the top ETFs, investors saw SPY add about 0.4%, DIA gain about 0.6% and QQQ move higher by about 0.7%, 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, 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:

(VGT – ETF report): Volume 3.58 times average

This technology ETF was under the microscope on Friday as nearly 1.3 million shares moved hands. This compares to an average trading volume of 358,540 shares and came as VGT gained over 0.7% in the session.

The movement can largely be attributed to consistent technology sector strength. In the last one-month period, VGT was up about 6.3%.

(DBB – ETF report): Volume 2.94 times average

This base metals’ ETF was in focus on Friday as roughly 354,374 shares moved hands compared to an average of roughly 120,500 shares. We also saw some stock price movement as shares of DBB lost about 0.7% on the day.

The persistent weakness in the base metal sector following the greenback strength on the buoyed-up December Fed rate hike bet and global growth worries including the economic slowdown in one of the largest users of metals –China – went against the fund in recent sessions. In the last one-month period, DBB was down about 9.5%.