There are theories that derivatives trading is driving movements in the topsy-turvy markets.
Analysts see more earnings warnings ahead as the economy slows.
Rallies for meme stocks show shades of last year's mania.
Traders are still guarding against single-stock blowups.
As indexes include more stocks like Tesla, will passive investors have to cope with higher volatility?
The tech-heavy Nasdaq 100 is showing signs of overheating that might signal a selloff.
Tesla is down considerably from the all-time high it marked in January.
The rotation is playing out to the disadvantage of tech investors so far this year.
Younger people are increasingly unwilling to put life on hold to contain the coronavirus pandemic.
Things are starting to look up for S&P 500 corporate earnings.