This paper finds evidence that brokers who execute insider trades on the Toronto Stock Exchange engage in tipping and insider trading. We find that on the day when insiders buy (sell), there is a significant increase in the proportion of non-insider client buying (selling) handled by the insider’s brokerage firm. Furthermore, we find that the brokerage firm doubles the amount of its own buying ...

A scientific four-step approach to evaluating efficiency in the operating room (OR) is described. These steps include identification of sequential work activities (SWAs) that are critical to the timely progression of surgical cases through the OR, identification of a time standard for completion of SWAs, direct observations of the amount of time required for completion of SWAs, and analysis of ...

Holey factorizations of Kv1,v2,...,vn are a basic building block in the construction of Room frames. In this paper we give some necessary conditions for the existence of holey factorizations and give a complete enumeration for nonisomorphic sets of orthogonal holey factorizations of several special types.

We consider an infinitely repeated oligopoly in which at each period firms not only serve the spot market by either competing in prices or quantities but also have the opportunity to trade forward contracts. Contrary to the pro-competitive results of finite-horizon models, we find that the possibility of forward trading allows firms to sustain collusive profits that otherwise would not be possi...

This paper studies the relation between the premiums in takeover bids involving exchange-listed target firms from 1975-91 and the pre-announcement stock price runups. The evidence shows that the pre-bid runup and the postannouncement increase in the target’s stock price (the Amarkup@) are generally uncorrelated. With little substitution between the runup and the markup, the runup is an added co...