Thursday is seeing a significant increase in oil prices.

West Texas Intermediate crude oil was the big winner, rising more than 7.5% to as high as $41.83/ barrel.

Earlier this week, WTI tipped below $38 a barrel, a new post-financial-crisis low.

This week, we saw crude-oil inventories decrease in data releases from the American Petroleum Institute and Energy Information Administration (see inventory numbers in sidebar).

Stocks were gaining on Thursday for the second straight day.

Heating oil is going up almost $0.09/g in a single day.

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