RE: sell off?I don't know how long you have been around the stock, but this is not uncommon when "unusual" things happen in the markets. Westport investors are a lot like jelly fish in that they tend not to have backbones. This Goldman story seems to be the catalyst for the latest sell off.
I would have thought that the inter-listing on the American exchange would have diluted this type of investor, but it seems that there are a lot of American investors who lack spines as well.
However, since the volumes where low on the Canadian exchange, and high on the American exchange, I'd suggest day traders or short selling had a lot to do with it... but heck, who really knows, eh.
The bottom line is that if you believe Westport has a the winning ticket buy and hold the stock, because it can be a bumpy ride. Anything could happen from here on out, and the news that makes it break out again will likely come from out of the blue; and from a source unknown to us.
One of these days we will see the "big NR" that will push the company name into the "market darling status", but I would not expect the NR to come from Westport themselves; so focus your attention elsewhere... like a massive terrorist strike on a Middle East pipeline; that would make it pop.