Ultra-low interest rates, fiscal stimulus, a fresh group of new retail investors, and an accelerating economic recovery have undoubtedly created euphoric conditions in the stock market.

The yield surge since the beginning of 2021 that reined in tech's outrageous returns and the rebound of recovery plays is a sign that the markets aren't trading as irrationally as we did in 1999/2000. Still, it does feel like the broader market may be coming up to a plateau or even a marginal correction.

I don't think the markets have overextended themselves too much, but I am not sure how much more upside many of these sectors have.

2021 will be a stock pickers market. There is always a bull market somewhere; you just have to know where to look.

(SPY), (QQQ)

The Hottest Tech Mega-Trend of All

Last year, it generated $24 billion in global revenues. By 2020, it's predicted to blast through the roof to $77.6 billion. Famed investor Mark Cuban says it will produce "the world's first trillionaires," but that should still leave plenty of money for regular investors who make the right trades early.

See Zacks' 3 Best Stocks to Play This Trend >>

Zacks Names "Single Best Pick to Double"

From thousands of stocks, 5 Zacks experts each have chosen their favorite to skyrocket +100% or more in months to come. From those 5, Director of Research Sheraz Mian hand-picks one to have the most explosive upside of all.

It’s a little-known chemical company that’s up 65% over last year, yet still dirt cheap. With unrelenting demand, soaring 2022 earnings estimates, and $1.5 billion for repurchasing shares, retail investors could jump in at any time.

This company could rival or surpass other recent Zacks’ Stocks Set to Double like Boston Beer Company which shot up +143.0% in little more than 9 months and NVIDIA which boomed +175.9% in one year.

Free: See Our Top Stock and 4 Runners Up >>