Leaving cap-weighting aside, mid-cap stocks are often overlooked, despite good performance characteristics. Amy Zhang, who manages the Alger Small Cap Focus Fund, (which has had an incredible performance run) launched the Alger Mid-Cap Focus Fund (AFOIX) in June. Crit Thomas, global market strategist at Touchstone Investments in Cincinnati, said in a phone interview that mid-cap stocks were “underrepresented” in investors’ portfolios as money continues to flow into large-cap index funds.