This paper is concerned with the analysis of strong indefinites and in particular of the proportional readings of many. Can we account for the proportional readings of many by assuming a uniform analysis, according to which many is a cardinality predicate, or do we need to postulate an ambiguity between a cardinality predicate and a quantificational determiner (Partee 1989)? I will argue in favour of the uniform analysis by comparing proportional most with proportional many: it will be shown that the former is necessarily a quantificational determiner (as in Generalized Quantifier theory, contra Hackl 2009), whereas the latter is a cardinality predicate inside a strong indefinite DP. This somewhat paradoxical result (a strong DP built with weak many) will be given a compositional semantics by assuming that constituents of the form many NP are headed by a null Determiner that has the semantics of plural some.