PT - JOURNAL ARTICLE AU - Jack L. Treynor TI - The Invisible Costs of Trading AID - 10.3905/jpm.1994.409498 DP - 1994 Oct 31 TA - The Journal of Portfolio Management PG - 71--78 VI - 21 IP - 1 4099 - https://pm-research.com/content/21/1/71.short 4100 - https://pm-research.com/content/21/1/71.full