 D.B. Root Company LLC boosted its stake in shares of Invesco BulletShares 2021 Corporate Bond ETF NYSEARCA:BSCL by 2.5 in the 1st quarter, HoldingsChannel.com reports. The fund owned 35,582 shares of the companys stock after purchasing an additional 861 shares during the quarter. D.B. Root Company LLCs holdings in Invesco BulletShares 2021 Corporate ... 