Gregory, Alan; Matatko, John; Tonks, Ian - In: Journal of Business Finance & Accounting 24 (1997-04) 3, pp. 309-342
There have been three empirical studies examining the share price reaction following trades by directors of UK companies (King and Poell, 1988; Pope, Morris and Peel, 1990; and Gregory, Matatko, Tonks and Pukiss, 1994). All three of these UK studies used different definitions of 'buy' and 'sell' signals...