The ticker for the PowerShares QQQ Trust, Series 1, an ETF traded on the Nasdaq Index. Formerly the Nasdaq-100 Trust, Series 1, this trust holds all the component securities that make up the Nasdaq and issues securities called QQQ Index Tracking Stock that are designed to track the approximate performance of the Nasdaq Index.

Investing Essentials

Copyright © 2011 Campbell R. Harvey, Professor of Finance, Fuqua School of Business at Duke University

Term of the Day

Effective margin (EM)

Used with SAT performance measures, the amount equal to the net earned spread, or margin of income, on assets in excess of financing costs for a given interest rate and prepayment rate scenario.

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