Learn about averaging up, a trading strategy involving buying more shares of a stock at higher prices in anticipation of its continued rise in value.

Weighted Average Loan Age (WALA) defines the average age of loans in a pool of mortgage-backed securities, weighted by the remaining principal balance or nominal value.

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Bike commuting is healthier and more environmentally friendly than driving and faster than walking, and, over time, it will save you a lot on MetroCards (if not stop you entirely from buying them).

Here are 45 practical strategies, from trimming utility costs to rethinking big expenses, to help you lower what you pay each month.