doi:10.1007/s10693-014-0198-2engOrtiz, CristinaRamírez, GloriaVicente Gimeno, Luis AlfonsoMutual fund trading and portfolio disclosuresART-2015-86138This is the first study in a large European market which analyzes monthly portfolios to obtain evidence of equity fund trading around quarterly reports. A new portfolio-weight approach shows that managers disclose large-cap and well-known stocks with higher returns and hide the same return-loser stocks in the reporting months. A fund-size agency problem plays an important role in this window dressing evidence. Fund trading also shows that managers benefits from the January effect by buying small-cap stocks at the beginning of the year rather than causing this anomaly.2015http://zaguan.unizar.es/record/5842510.1007/s10693-014-0198-2http://zaguan.unizar.es/record/58425oai:zaguan.unizar.es:58425info:eu-repo/grantAgreement/ES/MEC/ECO2009-12819-C03-02info:eu-repo/grantAgreement/ES/UZ/268-159JOURNAL OF FINANCIAL SERVICES RESEARCH 48, 1 (2015), 83-102by-nchttp://creativecommons.org/licenses/by-nc/3.0/es/info:eu-repo/semantics/openAccess