NEW YORK (TheStreet) -- Tuesday, the S&P 500undefined hit a new all-time and it's making headlines everywhere. But a certain chart was shared at the end of the day on StockTwits and it could be even more profound than the S&P 500's record high. It could also be a remarkably bullish signal for U.S. markets.

The NYSE Composite Indexundefined is an index comprised of every single stock listed on the New York Stock Exchange. That means it measures more than 2,000 companies listed on one of the world's most iconic exchanges. Today, that index also hit a new all-time high and closed at 10,584.31.

This all could be interpreted as a powerful statement about market breadth -- not only did the S&P 500 hit a new all-time high today, but so did the enormous NYSE Composite Index. We shared the original chart that caught our interest below, but we also want to hear from you. Is this is a major breakout everyone should be aware? Take a look: 

- Robert Lesnicki (@TraderRL23) Apr. 1 at 06:48 PM

$NYSE$NYA$SPX In other news, the NYSE Composite broke out to new ATH today... http://stks.co/g0SYO

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