On August 1, 2007, US crude reached a new intra-day high of $78.77 a barrel after the Energy Information Administration announced that oil stocks in the US were below market expectations and refinery output had increased. Following further reflection the price later slid backwards.
On September 14, 2007, US crude (WTI) reached a new intra-day high of $80.36 a barrel. Multiple factors have caused this high price. OPEC announced an output increase lesser than expected. US stocks fall lower than experts predicted and a leftist group in Mexico attacked six pipelines.
On October 16, 2007, US light sweet crude rose to a new record of $87.97 on the news that non-OPEC oil producers were expected to reduce daily output by approximately 110,000 barrels.
On October 19, 2007, US light crude rose to $90.02 per barrel due to a combination of ongoing tensions in eastern Turkey and the reducing strength of the US dollar. Prices fell briefly on the expectation of increased US crude oil stocks, however they rose again rapidly to a peak of $92.22 on October 26, 2007 when stocks were revealed to have instead fallen. This was repeated on October 31, 2007, when an expected 100,000 barrel rise in US crude oil stockpiles turned out to be a 3.9 million barrel fall, pushing US light crude oil prices to another new record of $96.24. Prices continued to rise to a peak of $98.62 on November 7, 2007 before starting to fall.
On January 2, 2008, oil prices rose to $100 per barrel on the combined effect of violence in Nigeria, Algeria, and Pakistan, the weak US dollar and the threat of cold weather, however this price was a one off deal and the only time oil has been sold for more than $100. The trader who paid $100 almost immediately sold the contract for less than $100, and took a loss. Therefore, this one $100 trade for oil remains in question, as some believe this trader might have had other motives for the purchase and subsequent loss.
On January 3, 2008 oil again hit an intra-day high of almost '$100 due to higher than expected decline in crude oil supplies.