HUIL Lumpleted this chapter, you should be able to Distinguish between (a) organized exchanges and OTC markets, (b) bro- kers and securities dealers, (c) market orders and limit orders (pp. 49-52). 2. Trace the mechanics of a stock purchase or sale (pp. 52-55). 3. Explain the advantages and risk associated with buying stock on margin (pp. 53-54)