Robert Michael Gorman — Executive Vice President and Chief Financial Officer
Whenever you state GAAP?
Brody Preston — Stephens Inc — Analyst
Yes, i am talking about you provide — yes you provide an FTE and a GAAP margin in your news release. And thus imagine out that the core margin for a GAAP as well as an FTE foundation simply.
Robert Michael Gorman — Executive Vice President and Chief Financial Officer
Yes, that is FTE foundation that people’re speaking about here.
Brody Preston — Stephens Inc — Analyst
Okay. So that it sounds like possibly only a bit that is little compression in the 1st quarter after which type of stable to up after that?
Robert Michael Gorman — Executive Vice President and Chief Financial Officer
Yes. That is perfect.
Brody Preston — Stephens Inc — Analyst
Okay. Fine. I recently wished to touch on which per cent of loans, the mortgage profile is associated with LIBOR and just how a lot of this is certainly one thirty days LIBOR?
Robert Michael Gorman — Executive Vice President and Chief Financial Officer
Yes the book that is total 24% is linked with 30 days LIBOR. So it is pretty sensitive to that LIBOR price. And it declined quite a bit in the fourth quarter, about 30 basis points as you know. I do believe in order that had been a driver that is big of loan yield compression you saw — we saw.
Brody Preston — Stephens Inc — Analyst
Okay and exactly what % regarding the profile is linked with prime?
Robert Michael Gorman — Executive Vice President and Chief Financial Officer
Brody Preston — Stephens Inc — Analyst
Okay. And I also’m assuming these loans kind of reprice through the entire quarter for a month-to-month foundation?
Robert Michael Gorman — Executive Vice President and Chief Financial Officer
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