Dr. Manasvi M. KamatDr. Manoj Subhash Kamat2025-03-012025-03-012025-03-012231-279Xhttp://mescollege.ndl.gov.in/handle/123456789/54This paper points out the sources of difference in the firm level export performances among the new/mature, and the competitive/ uncompetitive firms. This study uses micro (panel) data for firms in iron-ore export industry in Goa (India) to identify a number of systematic differences in firm’s export performance within the State. It is recognized that firms within iron-ore export industry have idiosyncratic differences in their efficiency of production and export performances. This underlying market share and market leadership heterogeneity, when embedded in a market framework, generates a size distribution of producers, distribution across firms, an endogenous exit decision for incumbent firms based on their productivity and ability to sustain, and an endogenous flow of new entering firms.enArticle