Stock Price — A Deep Dive (Raw Notes, No Advice)

Hey, I’m behind Raan.
Harvard ’25. Been following tech stocks and dividend companies for 10+ years—reading filings, calls, reports, the usual.

This is where I dump my notes and thoughts on what I see. No advice. Just the raw stuff.

Introduction: What a Stock Price Really Means

Let’s get one thing straight:

A stock price is not the company.

It’s just the last price someone was willing to pay for a share.

That’s it.

It doesn’t tell you:

• How good the business is
• How profitable it is
• Whether it’s cheap or expensive

It only tells you one thing:
👉 What the market currently believes

Think of the stock price like a thermometer.
It measures temperature—it doesn’t explain why it’s hot or cold.

1. The Core Idea: Price = Perception

Stock prices are driven by perception, not reality.

Two key forces:

• Expectation of future earnings
• Investor sentiment

A company can be doing great, but if expectations were even higher:
👉 Stock falls

A company can be doing poorly, but if things look “less bad”:
👉 Stock rises

That’s the game.

2. Supply and Demand — The Real Engine

At the most basic level:

• More buyers than sellers → Price goes up
• More sellers than buyers → Price goes down

Simple.

But behind that simplicity lies:

• News
• Fear
• Greed
• Algorithms
• Institutional money

All pushing and pulling at the same time.

3. Intrinsic Value vs Market Price

This is where most confusion happens.

Market Price

What you see on your screen.

Intrinsic Value

What the business is actually worth (based on earnings, growth, etc.)

The gap between these two:
👉 That’s where opportunities (and risks) live.

4. Earnings: The Backbone of Price

Over time, stock prices follow earnings.

Not daily. Not weekly.

But over the years:
👉 Earnings drive price

Companies with:

• Strong revenue growth
• Expanding margins
• Consistent profits

…tend to see rising stock prices.

5. Multiples: Why Prices Look “High” or “Low”

Price alone means nothing.

A ₹10 stock isn’t “cheap.”
A ₹10,000 stock isn’t “expensive.”

You need context.

Common Metrics

• P/E Ratio (Price to Earnings)
• P/S Ratio (Price to Sales)

These tell you:
👉 How much are investors willing to pay for growth

6. Growth Expectations: The Hidden Driver

Stocks are forward-looking.

If investors believe:

• Growth will accelerate → Price rises
• Growth will slow → Price falls

Even if current earnings are strong.

This is why:
👉 High-growth companies often trade at high valuations

7. News and Stock Prices

News acts like a trigger.

Examples:

• Earnings reports
• Product launches
• Economic data
• Political events

But here’s the twist:

👉 Markets react to surprises, not news itself.

8. The Role of Institutions

Big players move prices:

• Mutual funds
• Hedge funds
• Pension funds

They control massive capital.

When they buy or sell:
👉 Prices move significantly

Retail investors?
👉 Mostly reacting, not driving.

9. Short-Term Price Movements

Short-term price action is chaotic.

Driven by:

• News
• Trading algorithms
• Market sentiment

It’s noisy.

Trying to predict it consistently?
👉 Extremely difficult.

10. Long-Term Price Movement

Zoom out.

Over time, stock prices reflect:

• Business growth
• Economic expansion
• Innovation

This is where clarity exists.

11. Volatility: Why Prices Swing

Volatility is normal.

Reasons include:

• Uncertainty
• Earnings surprises
• Macro events

Think of volatility like waves:
👉 The ocean (long-term trend) matters more than the waves.

12. Market Psychology: The Invisible Force

Stock prices are heavily influenced by human behavior.

Key emotions:

• Fear
• Greed
• Hope
• Panic

These create:

• Bubbles
• Crashes
• Overreactions

Understanding psychology is half the game.

13. The Role of Central Banks

Central banks influence stock prices indirectly.

Examples:

• Federal Reserve
• Reserve Bank of India

Impact:

• Lower interest rates → Stocks rise
• Higher rates → Stocks struggle

Liquidity matters.

14. Inflation and Stock Prices

Inflation affects:

• Consumer spending
• Corporate margins
• Interest rates

Moderate inflation → okay
High inflation → negative for stocks

15. Interest Rates: The Silent Killer

Interest rates are critical.

When rates rise:

• Borrowing becomes expensive
• Valuations compress

Especially for:
👉 Growth stocks

16. Sector Rotation

Money moves between sectors.

Example:

• Tech → Defensive
• Growth → Value

This causes:
👉 Price changes even without company-specific news

17. Dividends and Price Behavior

Dividend-paying stocks behave differently.

They:

• Provide income
• Are less volatile

Price growth may be slower—but steadier.

18. Market Cycles and Price Trends

Every stock goes through cycles:

• Growth phase
• Peak
• Decline
• Recovery

Recognizing cycles helps avoid extremes.

19. Common Misconceptions About Stock Price

1. Low price = cheap

False.

2. High price = expensive

Also false.

3. Price always reflects reality

Not always.

Markets can be irrational.

20. What Actually Moves Stock Prices (In One Line)

If you had to summarize everything:

👉 Stock price = Future expectations × Investor sentiment

That’s the formula.

21. Real Example Insight

Looking at the chart above (Apple stock):

You can observe:

• Short-term fluctuations
• Longer-term upward trend
• Periods of consolidation

This is typical:
👉 Volatility in the short term
👉 Growth over the long term

22. Why Timing the Market Is Hard

Because:

• News is unpredictable
• Sentiment changes quickly
• Prices react instantly

Even professionals struggle with timing.

23. The Role of Liquidity

Liquidity = money in the system.

More liquidity:
👉 Higher stock prices

Less liquidity:
👉 Pressure on markets

24. Risk and Stock Prices

Risk affects valuation.

Higher risk → Lower price
Lower risk → Higher price

Risk includes:

• Business risk
• Economic risk
• Regulatory risk

25. Final Thought: Price vs Value

Here’s the key distinction:

• Price is what you pay
• Value is what you get

Markets often confuse the two.

Your job (if you’re thinking deeply) is to separate them.

Conclusion

Stock prices look simple on the surface—just numbers going up and down.

But underneath?

They represent:

• Human behavior
• Economic forces
• Business performance
• Future expectations

It’s not just math.
It’s psychology + economics + time.

And once you understand that, you stop reacting to price—and start interpreting it.

FAQs

1. What is a stock price?

A stock price is the current market value at which a share is being bought or sold.

2. Why do stock prices change every second?

Because of continuous buying and selling based on new information and sentiment.

3. Does stock price reflect a company’s true value?

Not always. It reflects market perception, which can differ from actual value.

4. What affects the stock price the most?

Earnings, expectations, interest rates, and investor sentiment.

5. Can stock prices be predicted?

Short-term prediction is very difficult; long-term trends are more predictable based on fundamentals.