U.S. government bonds are acting  more like equities than any time since before the credit crisis,  making Treasuries a hidden risk to investors becalmed by the  prospect of the Federal Reserve prolonging stimulus into 2014. 
  Ten-year Treasuries are moving 0.024 percent for every one-percent change in the Standard & Poor's 500 Index (SPX) in the same  direction, the first time that's happened since July 2007, based  on a risk measure known as beta. Prior to this month, the gauge  averaged minus 0.12 over the past decade, meaning that bonds  have historically moved in the opposite direction. 
  Treasuries are rising along with stocks as economists say  the Fed will keep suppressing borrowing costs to support the  world's largest economy after a 16-day government shutdown  slowed growth. While government debt was a haven as the U.S.  endured the worst recession in seven decades, primary dealers  such as Barclays Plc (BARC) and Goldman Sachs Group Inc. say the gains  this month show that the Fed's $85 billion of monthly bond  purchases are masking the risk of owning fixed-income securities  as the recovery in America takes hold. 
  "Treasuries are just not worth the risk," Thomas Higgins,  the Boston-based global macro strategist at Standish Mellon  Asset Management Co., which oversees $167 billion of fixed-income investments, said in a telephone interview on Oct. 23.  "The economy is certainly not going gangbusters, but the Fed  will step away at some point, and that will remove one of the  forces of lower yields." 
  Higgins said Standish Mellon has been reducing its stake in  Treasuries this month and plans to keep selling as long as  yields on 10-year notes, which fell to a three-month low of 2.46  percent last week, remain below 3 percent. 
  Bond Buying   
The gains in Treasuries in the past month, which pushed  down yields on 10-year securities from the highest in two years  of 3 percent on Sept. 6, upended the traditional relationship  with stocks. On Oct. 16, the day U.S. lawmakers reached an  agreement to end the shutdown, the beta for government debt on a  total-return basis relative to the S&P 500 turned positive,  based on the 26-week moving average compiled by Bloomberg. 
  While the shutdown restored confidence among debt investors  and prompted economists in a Bloomberg survey on Oct. 17-18 to  predict the Fed will keep buying $45 billion of Treasuries and  $40 billion of mortgage-backed securities each month for at  least five more months to buffer the economy, the perils of  lending to the U.S. have also increased in the bond market. 
  Since mid-2008, the amount of outstanding U.S. debt has  more than doubled to an unprecedented $11.6 trillion as the  government increased borrowing to finance deficits and mitigate  the fallout from the financial crisis. 
  Loss Potential   
Potential losses due to rising yields on the longest-dated  Treasuries are now approaching the highest level since at least  1996, Bank of America Merrill Lynch indexes show. 
  The gauge known as duration, which calculates how much  prices change when yields rise or fall, for Treasuries due in 10  years or more has climbed to 16.03, within 3.6 percent of the  all-time high of 16.6 in May. The reading is about 50 percent  higher than the average during the decade before the Fed began  its so-called quantitative easing in 2008. 
  Investors buying Treasuries today face a loss of 2.1  percent if yields for the 10-year notes increase to 2.8 percent  by year-end, the median yield estimate from 65 forecasters in a  Bloomberg survey. That would deepen this year's losses of 4.5  percent, based on index (BFCIUS) data compiled by Bank of America. 
  In the past quarter-century, the debt securities have  posted annual losses on just three occasions -- in 2009, 1999  and 1994 -- and returned 57 percent in the past five years.  That's more than six times the 8.6 percent gain for the S&P 500  over the same span, data compiled by Bloomberg show. 
  Not Easy   
"It's not as easy as it was to own Treasuries,"  Christopher Sullivan, who oversees $2.2 billion as chief  investment officer at United Nations Federal Credit Union in New  York, said in a telephone interview. "Over the longer term  there is less upside and a lot of risk to go along with that." 
  Treasuries rose last week, with 10-year yields falling  seven basis points, or 0.07 percentage point, to 2.51 percent,  according to Bloomberg Bond Trader prices. The 10-year yield was  2.52 percent today as of 1:47 p.m. in Tokyo. 
  It's premature to assume that yields are bound to increase  after reports last week signaled the U.S. economy still needs  the Fed's support to ensure its recovery, said Jack McIntyre, a  Philadelphia-based money manager at Brandywine Global Investment  Management LLC, which oversees $44.5 billion. 
  Uncertain Landscape   
Payrolls rose by 148,000 in September, versus the median  forecast for an 180,000 gain by 93 economists in a Bloomberg  News survey. The data indicated the economy lost momentum  leading up to the government shutdown, which S&P estimates  shaved at least 0.6 percent off fourth-quarter growth. 
  U.S. consumer confidence sank to an eight-month low in the  week ended Oct. 20, while more households were pessimistic about  the economy than at any time in the past year, according to the  Bloomberg Consumer Comfort Index. 
  "The economic landscape is uncertain at best," McIntyre  said in a telephone interview on Oct. 24. "There is still room  for Treasury yields to move lower." 
  Bill Gross, the co-chief investment officer at Pacific  Investment Management Co., the world's largest bond fund  manager, predicts that 10-year Treasury yields will remain close  to 2.5 percent. Policy makers are scheduled to meet Oct. 29-30  to consider whether to slow its bond buying. 
  The Fed "probably won't be tapering anytime soon," Gross  said on Oct. 22 in a Bloomberg Radio interview from Newport  Beach, California, where Pimco is based. 
  Market Complacency   
Price swings of Treasuries indicate most bondholders aren't  anticipating a sudden jump in borrowing costs. The implied  volatility for U.S. government bonds as measured by the Bank of  America Merrill Lynch MOVE index has fallen 45 percent in the  past month to the lowest since May, when fluctuations were the  least since data began 25 years ago. 
  The diminished volatility is a warning to Michael Gavin, a  New York-based market strategist at Barclays, because it  underscores the complacency that's pervaded the debt markets as  the Fed flooded the economy with cheap money. 
  Ten-year Treasuries are at their most expensive in four  months based its so-called term premium, a valuation model used  by the Fed that is calculated by using interest-rate  expectations, economic growth and inflation. The gauge, which  indicates a security is overvalued when its reading is below 0.4  percent, was 0.14 percent for 10-year notes. 
  Not Safe   
"Bonds are increasingly shifting from risk relievers to  securities that add more risk for investors," Gavin, whose firm  is one of the 21 primary dealers of U.S. government securities  that are obligated to bid at Treasury auctions, said on Oct. 21.  "The bond market isn't as safe as it was." 
  Yields on 10-year Treasuries will increase to 2.75 percent  by year-end as the economy regains the momentum it lost because  of the government shutdown, Jan Hatzius, the chief economist at  New York-based Goldman Sachs, wrote in a report dated Oct. 22. 
  U.S. gross domestic product will increase by 2.6 percent  next year, a full percentage point more than in 2013, based on a  Bloomberg survey of 75 economists. By 2015, growth is projected  accelerate 3 percent, which would be the fastest in a decade,  the polls show. 
   Corporate profits for S&P 500 companies have almost doubled  since 2008, and earnings in each of the next two years will  increase by more than 10 percent, data compiled by Bloomberg  show. That's more than twice as much as the 4.8 percent increase  that analysts project for 2013. 
  'Better Opportunities'   
Of the 244 companies in the index that have reported third-quarter results, 76 percent posted higher-than-estimated  earnings, the data show. While earnings have helped fuel a 23  percent advance in the S&P 500 to a record this year, its price-earnings ratio of 16.7 is still less than the average multiple  of 19.3 for the past 15 years. 
  "Because of the growth outlook there are opportunities  that provide compensation plus a margin of safety that  Treasuries do not," Jeffrey Schoenfeld, the chief investment  officer at Brown Brothers Harriman & Co., which oversees $33  billion, said on Oct. 23. "There are better opportunities than  Treasuries right now if you do your homework." 
  Schoenfeld said the New York-based firm sold of all its  holdings of Treasuries and is investing in financial company  bonds and inflation-protected securities. 
  U.S. government debt has already lost some of its appeal  among foreign investors. They were net sellers of Treasuries for  five-straight months ended August, disposing of $133 billion in  that span, last week's Treasury data showed. 
  Latent Risk   
The streak is the longest since 2001 as China, the largest  overseas U.S. creditor, reduced its holdings to $1.268 trillion,  the least since February. 
  The last time Treasuries moved as closely with equities was  in 2007, the year before the collapse of the housing market  sparked the deepest U.S. contraction since the Great Depression. 
  Treasuries soared and stocks plummeted the following year  as the risk relationship between the two assets was restored.  With the economy recovering from the depths of that recession,  Treasuries may be more vulnerable to a selloff this time. 
  When Fed Chairman Ben S. Bernanke signaled in May that the  central bank could taper its stimulus in "the next few  meetings" if the U.S. posts sustained growth, Treasuries  swooned and caused yields on the 10-year notes to surge by more  than a percentage point in 3 1/2 months. 
  "The interest-rate risk is significant for Treasuries at  these low yield levels," Zach Pandl, a Minneapolis-based senior  interest-rate strategist at Columbia Management Investment  Advisers, which oversees $340 billion, said in a telephone  interview. "It doesn't take much. We've already had a reminder  of how violent things can get this year."