FlexShares Credit-Scored Fund Experiences Surge in Short Interest The FlexShares Credit-Scored US Corporate Bond Index Fund (NASDAQ:SKOR) saw a significant rise in short interest, growing 61.5% in February to 4,200 shares. Despite this, its trading volume remains robust, with a days-to-cover ratio of just 0.1 days. Institutional investors have also been adjusting their positions in the fund.1