The stock market seemed to be moving back into rally mode following Friday's pullback amid the emergence of the Omicron variant of Covid-19. 
When investors are considering whether they should sell all of their position to avoid a huge correction, suddenly, the major indices just went all the way up and close to their all-time high. 
After the stock market opened Monday, the $Dow Jones Industrial Average (.DJI.US)$ rallied 0.35%, while the $S&P 500 Index (.SPX.US)$ moved up 1%. The tech-heavy $Nasdaq Composite Index (.IXIC.US)$ climbed 1.6%.
$Apple (AAPL.US)$ traded up over 2% in Monday's morning action, while $Microsoft (MSFT.US)$ moved up 1.9% , $Tesla (TSLA.US)$ rallied over 5%. $Rivian Automotive (RIVN.US)$ rose about 3.5%, while $Lucid Group (LCID.US)$ gained 1.8%. Chinese EV leader $Li Auto (LI.US)$ bolted higher after delivering earnings, while $XPeng (XPEV.US)$ raced over 4% higher.
So the dip was like a prank. It hurt investors' feeling and soon vanished in the air without any clue.
 
Source:
Dow Jones Rallies After Stock Market Rout; Vaccine Maker Moderna, Tesla Rival Surge