This Web service Provides monthly ,weekly and Historical Mortgage Indexes.
There are many possible ARM indexes. Each one has distinct market characteristics and fluctuates differently.

• Constant Maturity Treasury (CMT)
  
• Treasury Bill (T-Bill)
  
• 12-Month Treasury Average (MTA)
• Cost of Deposits Index (CODI)
• 11th District Cost of Funds Index (COFI)
• Cost of Savings Index (COSI)
• London Inter Bank Offering Rates (LIBOR)
• Certificates of Deposit (CD) Indexes
• Prime Rate
• Fannie Mae's Required Net Yield (RNY)

The following operations are supported. For a formal definition, please review the Service Description.

• GetCurrentMortgageIndexByWeekly
  Get Current week ARM indexes
• GetCurrentMortgageIndexMonthly
  Get Current month ARM indexes
• GetMortgageIndexByMonth
  Get ARM indexes by Month
• GetMortgageIndexByWeek
  Get ARM indexes by Week