G'day Andrew,
The group in question - "As a Wikimedian, I belong to a group..." is, in fact, us. As of this time last year, we owned 187 shares in Google
- they were a donation from someone in 2005-6.
http://upload.wikimedia.org/wikipedia/foundation/2/28/Wikimedia_2006_fs.pdf
"The Organization's investments are comprised of 187 shares of Google common stock which are carried at fair value using quoted market prices in accordance with SFAS No. 124, Accounting for Certain Investments Held by Not-for-Profit Organizations."
That's terrible!
(We should never say "are comprised of". They're composed of, or they comprise, but they aren't comprised of.)