Yesterday (friday) I took a heavy loss on my main stock investment, and I'm still trying to figure out why. Thursday, they had their quarterly earning report, which I thought was excellent, that is here. Brunswick Reports Third Quarter Results - Yahoo! Finance The stock market in general shot up on thursday but BC stayed essentially flat, despite a very solid earning report that beat their expectations and the market expectation.. Then friday it lost over 8%. After hearing the quarterly earnings I was expecting them to outperform the market, not way underperform the market. Now before anyone gets on here and tells me that losses happen on the stock market, I fully understand that, I've taken losses before but normally I see why i took the loss. Here I just don't see why it happened, and want to understand.