I would expect that there would be a rule in the prospectus which says that once the fund has lost (say) 40% it will stop trading and will be wound up.
freealways
freealways

Quote from AAAintheBeltway:
Actually, this does point up a problem with hedge funds. At a certain point, if a fund is underwater enough, it is likely to dissolve anyway, so the manager has a perverse incentive to go for the Hail Mary.