Starting with a time-0 coherent risk measure defined for “value processes”, we also define risk measurement processes. Two
other constructions of measurement processes are given in terms of sets of test probabilities. These latter constructions
are identical and are related to the former construction when the sets fulfill a stability condition also met in multiperiod
treatment of ambiguity as in decision-making. We finally deduce risk measurements for the final value of locked-in positions
and repeat a warning concerning Tail-Value-at-Risk.