http://www.spdrgoldshares.com/
2011/01/18 41,795,939
2012/01/10 40,603,467
2013/05/03 34,260,271
2013/08/06 29,486,937.62
2014/01/02 25,547,852.70
2015/12/24 20,729,313.48
http://us.ishares.com/product_info/fund/overview/IAU.htm
2012/11/29 11,390,401.627
2013/04/04 9,273,449.210
2013/04/15...