  By means of extensive galactic modeling we study the implications of the more
than 100 microlensing events that have now been observed for the composition of
the dark halo of the Galaxy. Based on the currently published data, including
the 2nd year MACHO results, the halo MACHO fraction is less than 60% in most
models and the likelihood function for the halo MACHO fraction peaks around 20%
- 40%, consistent with expectations for cold dark matter models.
