Sorry if I was unclear but that was the point of my original post. Wrightspeed is not public and funded so far by private investments and a few grants from the California Energy Commission.
Ian Wright has spoken at length about what it took to raise capital and has even complained about all the wannabe investors who have come out of the woodwork now that, as he puts it, "all the risk has been taken out." He's obviously very confident in his future success.
So again, this Firsthand Technology Value Fund (Stock symbol: SVVC) that I discovered in the Barron's article this morning is the first means I've found to invest directly in Wrightspeed. I'm going to look at it over the next couple weeks but for now I think I'm just going to stick with my stake in CPST.