Insider Trading. Insider trading is a poorly defined concept with roots in adverse selection theory and the efficient market hypothesis (EMH). The popular notion is that insiders have an unfair advantage because they possess materially significant and non-public information â an informational asymmetry.
In format, a letter of guarantee is normally a short document that addresses a specific transaction. The text contains data that establishes the identity of the buyer, his or her relationship with the bank, and the nature and general value of the asset that is pledged as collateral.
a money-back guarantee. [ + that ] The United Nations has demanded a guarantee from the army that food convoys will not be attacked. [ + (that) ] There is no guarantee (that) the discussions will lead to a deal. A product as good as that is a guarantee of commercial success (= it is certain to be successful). The shop said they would replace the television since it was still under guarantee. âº [ C ] a formal agreement to take responsibility for something, such as the payment of someone else's debt.