None of the fund styles earn a rating better than Neutral. See Figure 1 for my rankings on all twelve investment styles. My style ratings are based on the aggregation of my fund ratings for every ETF and mutual fund in each style. Note that the attractive-or-better Predictive ratings do not always correlate with attractive-or-better total annual costs. This fact underscores that (1) low fees can dupe investors and (2) investors should invest only in funds with good stocks and low fees.