Mf.freddiemac.com

If no published CMT maturity matches the remaining Yield Maintenance Period, Lender will interpolate as a decimal to 2 digits the yield rate between (a) the CMT with a maturity closest to, but shorter than, the remaining Yield Maintenance Period, and (b) the CMT with a maturity closest to, but longer than, the remaining Yield Maintenance Period ... ................
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