SRL for [underperforms]: But while the merits of diversification shine through when times are tough , there 's also a price to pay : A diversified portfolio always [underperforms] an undiversified portfolio during those times when the investment in the undiversified portfolio is truly hot .
ARG-0: A diversified portfolio | ARG-M-TMP: always | ARG-1: an undiversified portfolio | ARG-M-TMP: during those times when the investment in the undiversified portfolio is truly hot