It's been a tough past few months for Krispy Kreme (DNUT 3.02%) shareholders. Although the stock's perked up this month after becoming one of the market's favorite meme stocks, th

Conventional wisdom is out the door for some surging stocks as online hordes are bringing back meme stock mania.

“ [The meme-stock] surge is powered by advances in trading technology, wider use of leverage, and the rapid expansion of the options market. Confidence among retail traders is notably higher, fueled in part by recent gains in crypto markets,” wrote Mark Hackett, chief market strategist at Nationwide.