After a couple of years in business, he started his PhD studies in the spring semester of 1962 at Carnegie Mellon University (at that time the Carnegie Institute of Technology).
One of the papers in his doctoral dissertation was a very important contribution (1966) to the Capital Asset Pricing Model (CAPM).
If Jan Mossin had lived longer he would most likely have been a candidate for the Nobel Prize in Economics in 1990 together with Professors William F. Sharpe and John Lintner.
[citation needed] After he had finished his PhD he returned to NHH where he in 1968 was tenured professor.
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