In this section, we estimated the variations of the specifications reported in column 1 of Table 6 in
order to asses the robustness of the conclusions concerning the impact of collateral and other pricing
characteristics on the primary market spread. Since we concluded that an increase in marketability over
time would imply a narrowing of spreads over time, the first check of robustness investigated any temporal
evolution in the relevant pricing factors that affected primary market spreads. Using a unique common
sample could produce misleading results if investors evaluated loan tranches issued in these two periods
differently or if they attributed a different relevance to common factors. We ran a separate regression for
the sub-sample between 1999 and 2001 (Regression #2) and those issued between 2002 and 2005
(Regression #3 and #4).
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Last edited by linghuqian on 2008-4-27 at 22:58 ]