Strait & Sound Wealth Management LLC boosted its stake in Costco Wholesale Co. (NASDAQ:COST – Free Report) by 21.0% during the 4th quarter, Holdings Channel.com reports. The institutional investor owned 5,930 shares of the retailer’s stock after buying an additional 1,028 shares during the period. Costco Wholesale accounts for approximately 2.5% of Strait & Sound […]