 Cwm LLC cut its stake in shares of Invesco BuyBack Achievers ETF NASDAQ:PKW by 10.5 during the first quarter, HoldingsChannel.com reports. The fund owned 20,304 shares of the exchange traded funds stock after selling 2,370 shares during the quarter. Cwm LLCs holdings in Invesco BuyBack Achievers ETF were worth 984,000 at the end of the ... 