iShares MSCI USA Size Factor ETF(AMEX:SIZE)

SIZE provides total-market exposure thats flipped on its head. The funds weighting scheme allocates larger positions to the smallest firms from its large- and mid-cap parent indexMSCI USA Index. However, the methodologys natural log weighting function produces muted results compared to a simple inversionSIZE resembles an equal-weighted portfolio with a slight boost given to smaller firms. In addition to this small-size tilt, inverse weighting is likely to produce significant sector tilts relative to the parent index. The funds top holdings can change often as market movements and corporate actions push smaller mid-cap firms in and out of the large-/mid universe, and the contrarian strategy requires SIZE to sell winners and buy losers at each semi-annual rebalance. Prior to December 3, 2018, SIZE tracked an index that favors low-volatility US stocks.