Investors and Wall Street divided on whether current bull market is sustainable.

Despite recent gains in the stock market, investors are skeptical of a sustained rally due to concerns over inflation, the Federal Reserve's interest rate hikes, and a possible recession. Mega-cap tech stocks have seen a boost this year, but investors worry that the market's breadth is still too narrow. The next test for stocks will likely be the Fed's next interest rate decision, which could trigger a market correction. However, some investors remain bullish, citing recent robust economic readings and positive investor sentiment.