It doesn't matter what your investing strategy is, I'm pretty sure that I will be able to dig up numerous examples of someone losing money using that strategy. I'm sure that there were investors shorting Amazon, Apple, Google etc. that lost big time.
Yes, there are index funds that invests they way you're suggesting, but Black Rock is a hedge fund and is under no such obligations. While I agree with you that just because institutional investors invest in a stock it's by no means a guarantee, however, I think your explanation that they essentially threw a dart on the wall and it hit VUZI so they decided to go out and buy 6% is overly simplified.
The filing by Black Rock also leaves open the possibility that they bought the shares on someone else's behalf.
Finally, no doubt that VUZI's performance has been disappointing, but as far as I can tell that's pretty much the case for all the companies in this space. If you look at KOPN which is the manufacturer of the display components for the M300, Google Glass (EE) and Realwear, that stock has performed far worse than VUZI. So it really comes down to if you believe there is a future in AR or not.
Why are you critical of VUZI for going to Barcelona and promoting their products? What would you suggest they do instead?
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