The Control of Insider Trading — Smoke and Mirrors!

Abstract

There was a time in Britain when even senior representatives of the financial services industry were prepared to be quoted in the press as expressing doubts as to whether there was anything intrinsically wrong with directors and other corporate insiders taking advantage of their better knowledge about their companies in their own investment dealings. Indeed, some even went so far as to say that this was both proper and natural. True it is that, in Britain or for that much in continental Europe, there are few, even among the groves of academia, that would have advanced the theories justifying insider dealing that Professor Henry Manne so clearly articulated in ‘Insider Trading and the Stock Market’. Nonetheless, in what was then the leading book on the law and practice of the stock market, the authors, a leading Queen's Counsel and an eminent stockbroker, expressed the view in 1972 that a stockbroker who learnt even privileged information should not allow this to operate to the detriment of his client. Having said this, Sir Winston Churchill complained that it was defamatory to assert that advantage had been taken of ‘inside information’ during the so‐called Marconi scandal in 1911, and there are comments in a report to the House of Commons by special commissioners as early as November 1696 roundly criticising promoters of over‐valued stock selling out, in the entrepreneurial fashion eloquently advocated by Professor Manne, on the basis of their privileged knowledge and position. Thus, discussion of the pros and cons of insider dealing, at least in Britain, has tended to be emotional rather than based on economic or even pseudo‐economic analysis of empirical data. Even the surveys that have been conducted on attitudes to the practice would hardly impress a statistician.