Hertz Global Holdings, Inc. (HTZ) experienced a significant pre-market plunge of 9.59% on Monday, as investors appear to be taking profits following the stock's recent surge. This sharp decline comes on the heels of an impressive rally that saw the rental-car company's shares double in value over the past two trading sessions.

The dramatic downturn can be largely attributed to a natural correction after last week's exceptional gains. The recent rally was fueled by news that hedge-fund manager Bill Ackman's firm had disclosed a significant stake in Hertz, sparking investor enthusiasm. However, as often happens following such rapid ascents, some shareholders are now cashing in on their profits, leading to the current sell-off.

Despite the pre-market plunge, market observers will be keenly watching Hertz's performance during regular trading hours to see if the stock can regain some ground or if the downward pressure will persist. The volatility in Hertz's stock price underscores the current dynamic nature of the market and the impact that major investor moves can have on share valuations.