Using a carefully screened and filtered international database with a wide coverage across countries and size classes, this paper identifies and documents a post-1980s size effect which is persistent, not picked up by a Fama–French-style SMB, and largely due to the smallest-decile stocks. We...

Using an international Thomson Reuters Datastream database where size coverage is unusually wide and data errors have been reduced to a low level, we show that some specification decisions, and especially those related to size, may have a significant impact on asset pricing test results. We also...

Using a carefully screened and ltered international data base with a wide coverage across countries and size classes, this paper identies and documents a post-1980s size effect which is persistent, not picked up by a Fama-French-style SMB, and largely due to the smallest-decile stocks. We test...