The Human Nature Behind Stock Market Fluctuations

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  • May 28, 2025

In the intricate landscape of the capital market, stock prices ebb and flow like the relentless waves of the seaBeneath what seems to be chaotic fluctuations, two of humanity's most primal emotions—greed and fear—act as unseen hands that guide the direction of stock pricesIt is said that greed causes stock prices to rise while fear leads them to plummet, and these two forces dictate the speed of price changes with remarkable symmetryYet, for those seasoned investors navigating the realm of growth stock investment for a year or even longer, the reality is often a lot more complex.

When the air is thick with greed in the market, stock prices can soar to staggering new heightsAt this stage, a stock seems to rocket upwards like a spacecraft powered by a mighty engine, surging inexorably into the stratosphereThis phenomenon, characterized by the euphoric height of market activity, exemplifies how greed can propel stocks into hyperdrive, often exceeding any prior price increases within a fraction of the time

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Take, for instance, the technology sector; during the rise of new tech innovations, investors become enamored with potential, allowing greed to sway them into fervently purchasing shares, resulting in skyrocketing stock prices.


However, in stark contrast to greed’s exuberant influence, fear casts a long, menacing shadow over stock pricesFear, an instinctive tool for survival, showcases an alarming destruction in the stock marketImagine a packed theater suddenly engulfed in flames; the instinct to flee prompts individuals to escape at speeds far exceeding their entranceSuch is the market: when fear takes the helm, stocks tend to lose their gains at a rapid pace—far quicker than what it took to accumulate those earningsSavvy investors understand this dynamic, seeking to sell their stocks before panic ensues to avert significant lossesWilliam O'Neil, founder and chairman of IBD, cites the wisdom of Wall Street expert Joseph Kennedy in "How to Make Money in Stocks": “The goal is to exit while the stock is rising, so as to not allow it a chance to fall.” This statement profoundly encapsulates the acumen required to navigate fear in the stock market.

To maximize profits, investors must remain vigilant regarding fear's role in accelerating declines after stock prices peakA striking case study is the trajectory of NetApp's stock from 1998 to 2001. After the conclusion of a bear market in October 1998, NetApp soared like a rocket, experiencing an astonishing 1,880% increase to peak at $152.75 in October 2000. This surge was breathtaking and drew the attention of a wave of investors.

The rise of NetApp serves as an intriguing narrative

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This pioneer in data storage technology rebounded swiftly from the mass sell-off in October 1998, clearing a V-shaped bottom with a successful buy-in point of $61.35 on November 5. In the summer of 1999, it formed another bottom, setting off on a seven-month sprint, followed by the emergence of yet another robust low in the first half of 2000. Surging through this series of foundational constructions and explosive growth took over 23 months, leading the stock to its peakDuring the fiscal years from 1998 to 2000, NetApp's earnings more than doubled, with annual sales growth figures surging to 78%, 74%, and 100% for the fiscal years ending in AprilSuch remarkable performance undoubtedly fueled the ascent of the stock price, further igniting the investors' ravenous greed.


However, as September 2000 arrived and the major indices began to jitter, NetApp surprisingly experienced a break, though this breakthrough turned out to be a false alarm, leading the stock to plummet rapidlyWithin a span of six weeks from October to November 3, NetApp’s stock plummeted a staggering 64%, effectively erasing all gains accumulated since November 1998 within a mere 12 monthsThe bursting of the internet bubble severely impacted NetApp's profits and sales figures in 2001. The glory days of yesteryear came crashing down as fear gripped the market, compelling investors to shed their stocks and triggering a relentless decline in share prices.

This narrative vividly illustrates that the dynamics of greed and fear in the stock market are not a straightforward, mirrored relationshipThe process through which greed drives stock prices upward tends to be a prolonged and convoluted journey requiring both corporate performance backing and gradual accumulation of market sentiment

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