Well, for one thing, banks are very exposed in the domestic oil patch which is being destroyed by low oil prices and, now, the sudden introduction of oil from Iran. At the same time, lower oil prices are seen as a global indication of arrested growth in general and that undermines the market.
I the mean time, beef prices are up because corn prices are up because we were lied to about oil resources and idiots redirected food into fuel. The entire “peak oil” pushed by Liberals in order to manipulate our behavior and restrict the free market was a lie.
The “introduction of oil from Iran” is overblown as a factor here. The U.S. embargo against Iran altered the way oil was traded on the global markets, but it didn’t stop Iran from selling oil. I believe they were the fourth-largest oil producer in the world even with the embargo in place.