Numbers, ratios, and formulas are the lifeblood of the financial markets. Mathematics of the Securities Industry uses straightforward math and examples to explain every key number used on Wall Street, from the calculation of each number to why it is important and how best to use it. Completely up-to-date to include three-day settlement, decimalization, new tax laws, and more, it is today's easiest-to-use reference for measuring investment potential and accurately monitoring stock and bond performance.