When a company (NHL) comes out and discloses to the stockmarket a very favourable earnings and profit guidance one day - and a short time later comes out with a wildly different set of numbers (and I mean wildly different - check it out for yourself), then who is to blame??
There was no warning the major fall in the preceding price action -except the stock was in a slow downtrend. The guidance they disclosed gave every reason for this downtrend to halt - and an uptrend to begin.
Now, unless you are privy to insider information at the time - then how can you say this was a trading fault.
The answer is it was not a trading fault to buy NHL based on the information they disclosed - the blame lies squarely with the management of the company. It was just bad luck people who relied upon their negligent and inaccurate statements to the market.
You just should have taken the comments in this thread (about the management etc) onboard - just noted them even - then moved on rather than judging the trading technique of people who got stung through no fault of their own.
That said, good luck with NHL - PSA is my speculative special at the moment.