When things seem too good to be true for the stock market, they usually are.

Move over, Superman! The only thing more powerful than a locomotive at the moment is the U.S. stock market, which, seemingly faster than a speeding bullet, has rallied to new heights .

When the closing bell tolled on Sept. 11, the benchmark S&P 500 ( ^GSPC -0.05% ) , iconic Dow Jones Industrial Average ( ^DJI -0.59% ) , and growth stock-dependent Nasdaq Composite ( ^IXIC 0.44% ) all catapulted to record closing highs. Everything from the evolution of artificial intelligence (AI) -- a potentially $15.7 trillion global addressable opportunity by 2030, according to PwC -- to the growing prospect of a Federal Reserve rate cut in September has fueled optimism and risk-taking.

But the tricky

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