If the sf gate article is correct, Fidelity had a $84 million investment in SpaceX. This was part of a $1.0 billion round with Google that SpaceX says was just under 10%.[1] Looks like Google owns about 9% of SpaceX (I can't find this spelled out directly anywhere just goggling around).

If SpaceX is valued at about $20 billion, Google owns 9%, and Google's market cap is $720 billion, buying Google gets you 0.25% of that investment into SpaceX. Almost nothing, but better than Fidelity's exposure.

[1]http://www.spacex.com/news/2015/01/20/financing-round