IWM is the biggest ETF tracking the widely followed Russell 2000 Index. Following Election Day, investors flocked to IWM, IJR and rival small-cap ETFs as markets priced in President Donald Trump’s “America First” mantra that would help domestically-oriented companies led the next leg in economic growth.

Small-caps are also focused on the domestic economy and have less direct exposure to global geopolitical uncertainty and currency risks, as opposed to large-cap companies that have an international footprint, which may be affected by overseas risks and a strengthening U.S. dollar.

Since the start of the fourth quarter, investors have added $165.1 million to IWM and over $74 million to IJR.

For more information on small-capitalization stocks, visit our small-cap category.

Tom Lydon’s clients own shares of IWM.