Huge oil trading loss sinks energy trader SemGroup

By Robert Campbell

NEW YORK (Reuters) - SemGroup LP declared bankruptcy on Tuesday after $3.2 billion in oil trading losses torpedoed the formerly 12th-largest private U.S. company.

The Tulsa-based company racked up the massive losses as oil prices ran up record gains, undercutting short crude futures positions SemGroup bought to hedge against its 500,000 barrel-per-day trading business.

To meet obligations, SemGroup plans to sell off oil and natural gas gathering, transportation, and storage assets worth an estimated $6.14 billion that were purchased in a whirlwind of acquisitions since it was founded in 2000.

"We have determined that the best way to maximize value for our creditors is to undertake a sales process that will transition our valuable businesses to well-established companies," Terry Ronan, SemGroup's acting chief executive, said in a statement.

SemGroup took a $2.4 billion loss on July 16 after it transferred its New York Mercantile Exchange oil futures trading account to Barclays Plc, converting what they called "loss contingencies" into an actual loss.

Included in the NYMEX loss was $290 million owed to SemGroup by a trading company owned by co-founder and former chief executive Thomas Kivisto, who was placed on administrative leave on July 17.

Securities legislation limits publicly traded company executives from extensive dealings with their firms, but experts said privately held companies have more flexibility.

"They can't do anything illegal. But there is no particular disclosure to anyone apart from any contractual agreements that they may have with investors," said Kenneth Froewiss, a professor of finance at New York University.