Amsterdam is the oldest stock exchange, founded in the 1460s. London stock exchange is one of the oldest, founded in 1801, with nearly ~220 years of history. US markets have been around for ~200+ years, since the early 1800s (NYSE was established in 1817). Indian markets are relatively young, been around for only a little over 40 years, in any meaningful way. BSE was founded in 1870s, but it's hard to find reliable data since before Sensex was created in 1979. Some even suggest to ignore data from before NSE was created in 1994, which gives us ~25 years worth of market data to analyse.