SPX: now versus 1965 to 1980
From the historical charts at Stockcharts.com, we have cutouts of two large trading ranges. The S&P 500 was largely range bound from the mid 60s to the late 70s (~15 years) and from the late 90s until the present (~13 years). The current rally looks similar to the rally seen in 1975, which continued into 1976 and peaked below the 1973 high.

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