Why Kinross Gold, Weibo, and Middleby Slumped Today

Wednesday was a strong day on Wall Street, and major benchmarks posted solid gains of around 1%. Market participants were generally happy about oil prices moving back into the $70s, hoping for a rebound in hard-hit areas of the country that had taken advantage of the triple-digit oil prices of the early 2010s by dramatically ramping up production of shale plays and similar opportunities.

Yet even with the generally favorable mood, some stocks weren't able to join the rally. Kinross Gold (NYSE: KGC), Weibo (NASDAQ: WB), and Middleby (NASDAQ: MIDD)were among the worst performers on the day. Here's why they did so poorly.