Definition of "unsystematic" []

• Not systematic (adjective)

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• "Sharpe's proof depends upon the assumption that all investors effectively free themselves of "unsystematic" risk by diversification and receive a risk premium only for the remaining "systematic risk" (he argued that rational investors in a perfect market would arbitrage away any premium gained in return for avoidable risks)."
• "DSM 5 literature reviews are remarkably variable in quality; often one sided, incomplete, and unsystematic; and sometimes giving undue weight to unpublished papers or papers authored by DSM 5 work-group members."
• "Christians might take offence at the selective and unsystematic consideration of one of their holiest festivals."