In the last trading session, U.S. stocks were mostly in the red as investors were cautious about the outcome of the forthcoming presidential election. Among the top ETFs, investors saw (SPY Quick QuoteSPY - Free Report) lose about 0.6%, (DIA Quick QuoteDIA - Free Report) shed over 0.4% and (QQQ Quick QuoteQQQ - Free Report) shed about 0.8% 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:

(TIP Quick QuoteTIP - Free Report) : Volume 4.25 times average

This U.S. inflation-protected ETF was in focus yesterday as roughly 4.75 million shares moved hands compared with an average of roughly 1.12 million shares. TIP gained about 0.04% on the day.

The uptick in inflation in recent times boosted this inflation-protected ETF. In the last one-month period, TIP was off about 0.4%.

(FXH Quick QuoteFXH - Free Report) : Volume 3.25 times average

This healthcare ETF was under the microscope yesterday as nearly 450,000 shares moved hands. This compares with an average trading volume of 139,000 shares and came as FXH lost about 0.07% in the session.

The movement can be credited to the price gouging issues of drugs. The controversy may flare up post-election if Hillary Clinton makes it to White House as she has long been vocal against the issue. In the last one-month period, FXH was down over 8.1%.

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