According to preliminary calculations, the Dow Jones industrial average fell 73.27, or 0.82 percent, to 8,870.54, after rising by 215 points in early trading and tumbling by as many as 183. But trading was fairly orderly in the last hour -- in recent weeks, stocks have often seen high volatility late in the day.

Broader indexes also ended lower. The Standard & Poor's 500 index fell 11.78, or 1.27 percent, to 919.21, and the Nasdaq composite index fell 30.66, or 1.86 percent, to 1,616.74.请问其中的Broader indexes also ended lower是什么意思？特别是Broader indexes到底是什么意思？

布罗德指数也于低点收盘。
布罗德指数和Dow Jones 指数、Nasdaq 指数一样都是经济专业术语。