Same thing actually happened with Ford calls a few days ago. I had some long term leaps, which were ok, but the short term, I bought some out of the money, the day the plans were released, they were cut in half, and i just got out of them.
My own opinion, the bad job reports number, we knew it would be bad, the question of how people would react. And when you take into account that it came out, plus since little weak hands are left it didnt tank the market, it started a rally, and the calls and speculation in SKF are done.
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