Bank of America says growth stocks are in a bubble exceeding the 'dot-com' and 'nifty fifty' eras.

Bank of America says growth stocks are in a bubble exceeding the 'dot-com' and 'nifty fifty' eras — and warns they could take the S&P 500 down 40%.

Bank of America warns of a bubble in US growth stocks echoing the "Nifty Fifty" and "dot-com" eras.

* Concentration in US stocks is significantly above historical norms, BofA said.
* Investors should consider diversifying and focusing on quality stocks to mitigate risks, BofA said.

[https://finance.yahoo.com/news/bank-america-says-growth-stocks-180002109.html](https://finance.yahoo.com/news/bank-america-says-growth-stocks-180002109.html)