 Shares of Invesco RAFI Strategic Developed ex-US Small Company ETF NASDAQ:ISDS traded down 2.2 on Friday . The stock traded as low as 19.17 and last traded at 19.17, 100 shares were traded during mid-day trading. A decline of 96 from the average session volume of 2,483 shares. The stock had previously closed at 19.60. ... 