I also agree with Millie's math. The only caveat is that that is based on the total assets of the fund today, in 2015. The SEC filing that lists the WTB&TS as a 7%+ shareholder is from 2004, over 10 years ago. I'm sure someone with Bloomberg access could look up to see what the value of the fund was back then. Also, note that at least some share classes list a Share Class Inception Date of 02/19/2005, once again after the 2004 filing we have.
Needless to say, the WTB&TS's 7% stake was no doubt a large amount, but basing in on the fund's assets today is rather arbitrary.