Market Extra: This 135-year-old stock index just logged its longest skid in about 50 years

The Dow Jones Transportation Average on Friday produced its lengthiest series of losses since 1972, highlighting a recent slump that has taken hold of the broader stock market.

The Dow transports DJT, -0.45% created by Charles Dow in 1884 (the Dow Jones Industrial Average was formed in 1896), has fallen in 11 consecutive sessions. The 135-year-old index has only logged five periods in which it declined for 11 consecutive sessions, and five points where it has registered a 12-day drop, according to Dow Jones Market Data and S&P Dow Jones Indices.

Check out the complete table of declines of at least 10 sessions below:

The recent skid for the closely watched gauge is significant because it is often used as a proxy for the health of the overall economy, and the stumble comes amid increased fretting over the health of the global economy.

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