ONEO

ONEO doesn't focus solely on high-momentum stocks, despite its name. Rather, the fund is part of a suite of ETFs (along with ONEV and ONEY) that scores the members of the Russell 1000 index on three "core" factors (value, quality and small size) and one "focus" factor—in this case, momentum. These factor scores are scaled by market cap to determine weighting, and holdings with weights below a certain threshold get dropped from the index. The result is a portfolio that loosely resembles the broad market, but with emphasis on the four factors, including momentum. ONEO's Russell 1000 lineage means it holds a significant contingent of midcaps, a condition that's amplified by the small size factor tilt. The index is rebalanced semi-annually.