In the last trading session, U.S. stocks demonstrated a mixed performance as investors await inputs from Fed’s two-day monetary policy meeting and come to terms with lackluster results reported by some of the major companies. Among the top ETFs, investors saw SPY gain 0.03%, DIA drop by 0.11% and QQQ rise 0.11% 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:

(YCS Quick QuoteYCS - Free Report) : Volume 3.23 times average

This leveraged inverse yen ETF was in focus yesterday as nearly 373,000 shares moved hands. This compares to an average trading volume of 116,000 shares and came as YCSlost2.3% in the session.

The movement can be blamed on the yen easing against the greenback ahead of the Bank of Japan's scheduled meeting later in the week. Funds with leveraged factor tacked on them provide outsized returns in a very short period of time. In the last one-month period, YCS was up about 4.3%.

(SMH Quick QuoteSMH - Free Report) : Volume 2.80 times average

This semiconductor ETF was in focus in the last trading session as around 8.6 million shares moved hands compared with an average of roughly 3.1 million shares a day. We also saw some price movement as SMH added nearly 2.7% in the last session.

The big move came in as the major companies reported better-than-expected earnings. Meanwhile, outlook for the semiconductor industry has improved, which can have a big impact on stocks like the ones we find in this ETF portfolio. In the past one-month period, SMH was up 16.2% and has a Zacks ETF Rank of 2 or ‘Buy’ rating with a High risk outlook.

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