Did Goldman Sachs Manipulate Its' Commodity Index to Drive Gas Prices Down and Help the Republicans?

Keller Komments quotes the NYT:

Politics and worries about oil supplies may have caused gasoline prices to go up at the pump earlier this year, but one big investment bank quietly helped their rapid drop in recent weeks, according to some economists, traders and analysts.

Goldman Sachs, which runs the largest commodity index, the G.S.C.I., said in early August that it was reducing the index’s weighting in gasoline futures significantly. The announcement did not make big headlines, but it has reverberated through the markets in the weeks since and some other investors who had been betting that gasoline would rise followed suit on their weightings.
“They started unwinding their positions, and those other longs also rushed to the door at the same time,” said Lawrence J. Goldstein, president of the Petroleum Industry Research Foundation.

The August announcement by Goldman Sachs caught some traders by surprise.The firm said in early June that it planned to roll its positions in the harbor contract into another futures contract, the reformulated gasoline blendstock, which is replacing the harbor contract at the end of the year because of changes to laws about gasoline additives.

Later in June, Goldman said it had rolled a third of its gasoline holdings into the reformulated contracts but would make further announcements as to whether the remainder would be rolled over. Then in August, the bank said it would not roll over any more positions into gasoline and would redistribute the weighting into other petroleum products.

Goldman Sachs declined to comment. Some traders speculated that Goldman might have been concerned about the liquidity of the reformulated contract and whether other traders would embrace it because there were so few contracts outstanding. The open interest, or number of futures contracts taken out, has increased ninefold in the reformulated contract since then. Unleaded gasoline made up 8.72 percent of Goldman’s commodity index as of June 30, but it is just 2.3 percent now, representing a sell-off of more than $6 billion in futures contract weighting.

I'll bet some Democrats might wish they asked Hank Paulson a few more questions at his confirmation hearings.