The authors operationalize unconstrained status by binary coding eleven prospectus characteristics and treating a score of nine or better as unconstrained, producing a final study sample of 84 funds out of 114 funds identified in the Morningstar Nontraditional Bond index.
Source quote, verbatim
of purely unconstrained mutual funds (i.e., those which were the focus of this study) (N=84) included only those UMFs that scored a "9" or better out of a total of 114 funds identified in the Morningstar Nontraditional Bond index.
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