# How does Bloomberg arrive at stub rate for swaps/floaters?

I'm trying to interpolate initial stub rate ( 'Index to' in the image ) for the following FRN pricing example.

• Fixes on 2016/11/30
• 1m : 0.623670
• 2m : 0.742500
• 3m : 0.93417

Please be as specific as possible ( particularly day count convention ).

• Did you try asking Bloomberg help desk? – LocalVolatility Dec 21 '16 at 22:11
• I did. Was told to look up documentation, which is nothing but minimal description of what Current Index is. – vara Dec 22 '16 at 23:10

01 Dec 2016 to 13 Jan 2017 is 43 days,
(43-30)/(60-30)*(2m Libor - 1m Libor)+(1m Libor)
= 0.675163