By John Glover and Bryan Keogh June 14 (Bloomberg) — The biggest oil spill in U.S. history has wiped about $19 billion from the value of energy company bonds as investors bet that tighter regulation may curb revenue and profits. Debt sold by energy companies worldwide has lost almost 4 percent of its value from this year’s peak on April 27, as potential costs of the Deepwater Horizon oil rig explosion on April 20 mount, according to Bank of America Merrill Lynch’s Global Corporates Energy index. The market value of the index, which contains 805 securities of companies ranging from London- based BP Plc to Anadarko Petroleum Corp. of The Woodlands, Texas, ended June 11 at $510.8 billion. “There are fears in the market of much tighter regulation and concern they’ll have to re-price the risk of fines and cleanup costs,” said Christian Weber , a Munich-based strategist at UniCredit SpA. “The entire sector is under a lot of pressure.” The drop in debt prices has pushed yields to the highest since July relative to government bonds, the Bank of America Merrill Lynch index shows. That means the 50 biggest energy company borrowers may pay an extra $763 million in annual interest to refinance the $80.3 billion of bonds globally coming due through 2012, according to data compiled by Bloomberg. Interest costs are “going to hurt the company directly, because that feeds right into the bottom line,” said James Barnes , money manager at Wyomissing, Pennsylvania-based National Penn Investors Trust Co., where he helps oversee $1 billion in fixed-income assets. “We don’t look at today’s market as a buying opportunity.” Spreads Widen Elsewhere in credit markets, the extra yield investors demand to own corporate bonds rather than government debt rose for a fourth straight week last week. Corporate bond sales jumped 57 percent from the previous period to about $28 billion, the most in six weeks, according to Bloomberg data. Leveraged- loan prices fell for a fourth week, and emerging-market bonds gained. Corporate bond yield spreads widened 5 basis points last week to 201 basis points, or 2.01 percentage points, according to Bank of America Merrill Lynch’s Global Broad Market Corporate Index. The gap has jumped from this year’s low of 142 basis points on April 21. Average yields climbed to 4.1 percent on June 11 from 4.05 percent a week earlier. Company debt has lost 0.23 percent this quarter, after gaining 2.92 percent, including reinvested interest, in the first three months of the year. ‘Double Dip’ “The simple fear is that an economic double-dip will result, given strained financial conditions, the consumer retrenchment that may come in the wake of all the volatility and labor markets that remain slow and prone to stalling,” Riz Hussain and Adam Richmond, credit strategists at New York-based Morgan Stanley, said in a report on June 11. While global bond sales picked up last week, they remain below the record pace of 2009. In the U.S., companies have issued $458.4 billion of debt in 2010, compared with $648.5 billion in the same period of last year, Bloomberg data show. Last week’s sales were capped by Bank of New York Mellon Corp.’s offering of $650 million in five-year notes. The 2.95 percent notes were priced to yield 95 basis points more than similar-maturity Treasuries, Bloomberg data show. The commercial mortgage-backed bond market is starting to show signs of life. JPMorgan Chase & Co. sold $716.3 million of the securities on June 11 in the second offering of the debt this year, said a person familiar with the transaction. The largest top-rated portion, maturing in 4.53 years, yields 140 basis points more than the benchmark swap rate, said the person, who declined to be identified because the terms aren’t public. The AAA rated slice maturing in about 9.53 years yields 165 basis points over the benchmark. Leveraged Loans Leveraged loan prices continued to fall. The S&P/LSTA U.S. Leveraged Loan 100 Index , which tracks the 100 largest dollar- denominated first-lien leveraged loans, declined to 88.22 cents on the dollar on June 11, from 88.93 cents a week earlier. While prices are up 49 percent from Dec. 17, 2008, when the index closed at 59.2 cents, they’re down from this year’s peak of 92.90 cents on April 26. Gentiva Health Services Inc. , the U.S. home-nursing company that’s buying Odyssey HealthCare Inc., may approach investors this week for a retooled $925 million loan package to fund the takeover, according to a person familiar with the transaction. The financing will include a $125 million five-year revolving credit line, a $200 million five-year term loan A and a $600 million six-year term loan B, said the person, who declined to be identified because the deal is private. The company expects to pay a “blended” interest rate of about 7 percent on the facility, said Eric R. Slusser , Gentiva’s chief financial officer. Default Swaps While spreads rose, an indicator of corporate credit risk in the U.S. fell last week. Credit-default swaps on the Markit CDX North America Investment Grade Index, which investors use to hedge against losses on company debt or to speculate on creditworthiness, declined 1.8 basis points to 124, according to Markit Group Ltd. The index typically falls when investor confidence improves and rises when it deteriorates. Credit swaps pay the buyer face value if a borrower fails to meet its obligations, less the value of the defaulted debt. A basis point equals $1,000 annually on a contract protecting $10 million of debt. The cost of protecting European corporate bonds from default rose for the second week. Credit-default swaps on the Markit iTraxx Crossover Index of 50 mostly junk-rated companies climbed 8.6 basis points to 597.8, according to CMA DataVision. The Markit iTraxx Asia index of 50 investment-grade borrowers outside Japan fell 1.7 to 143.6, CMA prices show. Emerging Markets In emerging markets, yield spreads tightened 4 basis points to 328 basis points last week, according to a JPMorgan index. The spread has ranged from this year’s low of 230 on April 15 to a high of 346 on May 20. Barzil’s Hypermarcas SA’s board approved a plan to sell 500 million reais ($276 million) of bonds due in 2014, 2015 and 2016. The consumer-products company hired Banco Bradesco BBI SA, Banco Itau BBA SA, Banco Citibank SA and Banco Santander (Brasil) SA to manage the sale. Energy companies’ bonds are handing investors the biggest losses since a month after Lehman Brothers Holdings Inc. collapsed in September 2008. A team of government scientists said last week that BP’s damaged well in the Gulf of Mexico has been leaking twice as fast as previously estimated. Debt sold by gas, oil and exploration companies has given up 1.17 percent in June, including reinvested interest, following a loss of 1.08 percent in May, according to the Bank of America Merrill Lynch index. A total 34 of the 50 biggest members of the index have underperformed the broader market. Energy bonds are the worst performers globally this month. ‘Wide-Ranging Changes’ “Longer term this incident will stir further wide-ranging changes to the energy industry, its regulators and public attitude toward the energy markets,” fixed-income strategists at JPMorgan led by Eric Beinstein in New York wrote in a June 11 research report. “Changes will likely filter through the industry for years ahead.” BP’s bonds have handed investors a loss of 9.61 percent in June, according to the Bank of America Merrill Lynch Global Corporates Energy index. Anadarko Petroleum Corp., which owns a stake in the leaking well, lost 16.1 percent. For BP, “current levels are pricing in enormous unknowns and seemingly unquantifiable future damage liabilities,” Richard Birrer , an analyst at BNP Paribas SA in London, wrote June 11. “For more risk-averse long-term investors, cash bonds represent compelling value.” BP Bonds BP has $11.2 billion maturing through 2012, and The Hague- based Royal Dutch Shell Plc is second on the list with $10.9 billion due, Bloomberg data show. Notes issued by Transocean Ltd., which leased the oil rig to BP, fell 14.1 percent. Halliburton Co. debt lost 4.84 percent and Rockies Express Pipeline LLC’s securities have a negative return of 2.39 percent. “You’re going to get that regulatory oversight,” said Michael Donelan , who oversees $3.5 billion of bonds at Ryan Labs Inc. in New York. “The government wants to exact its pound of flesh. That’s what the market is pricing in now.” The extra yield investors demand to own U.S. bonds by energy issuers instead of Treasuries has risen 95 basis points since the BP spill to 239 basis points, the highest since July 2009, Bank of America Merrill Lynch index data show. “You’ll see a lot of those spreads tighten” when there’s closure on the BP spill, “whenever that may be,” said Dan Sheppard , a director in fixed-income at Deutsche Bank AG’s Private Wealth Management unit, where he helps oversee $12 billion for the bank in New York. “In the meantime, it’s unprecedented.” To contact the reporters on this story: John Glover in London at johnglover@bloomberg.net ; Bryan Keogh in London at bkeogh4@bloomberg.net .