For more than 128 years, the iconic Dow Jones Industrial Average ( ^DJI 0.85%) has served as a barometer of Wall Street's health. Over that time, it's evolved from an index that contained a dozen (mostly) industrial stocks to one that now houses 30 diverse, multinational businesses.

(Reuters) -Intel will be replaced by Nvidia on the blue-chip Dow Jones Industrial Average index after a 25-year run, underscoring the shift in the chipmaking market and marking another setback for the struggling semiconductor firm.