SRJahirTech

Market Education: How Global Markets Work

By Suraj Ahir September 08, 2025 6 min read

Most people who invest in financial markets do not have a clear mental model of how those markets actually function. They know that stocks go up and down, that news affects prices, and that some people make money while others lose it. But the deeper mechanisms — how prices are set, who the major participants are, how information flows through markets, and what drives long-term returns — are less understood. This foundational knowledge is what separates investors who make consistent long-term decisions from those who react emotionally to market noise.

What Financial Markets Are and Why They Exist

Financial markets exist to solve a fundamental economic problem: connecting people who have capital (savings they want to put to productive use) with people who need capital (businesses, governments, individuals who want to invest or spend more than they currently have). Without financial markets, this matching would happen slowly, expensively, and imperfectly. With financial markets, capital can flow rapidly and efficiently from where it is sitting idle to where it can create value.

Stock markets specifically allow companies to raise capital by selling ownership stakes to investors. When a company conducts an IPO (Initial Public Offering), it sells shares to the public and receives cash that it can use to expand operations, fund research, or pay off debt. After the IPO, those shares trade on secondary markets (like the NSE, BSE, NYSE) where investors buy and sell them from each other. The company does not receive money from secondary market trades — only the original IPO proceeds go directly to the company.

How Prices Are Set in Markets

Stock prices are set by the interaction of buyers and sellers. At any given moment, some investors want to buy a stock (they believe the current price is attractive relative to future prospects) and some want to sell (they believe the price is fair or too high, or they need cash for other purposes). The price at which a transaction occurs is the price at which a buyer and seller agree.

Modern equity markets use electronic order books that match buy and sell orders continuously. The bid price is the highest price a buyer is willing to pay. The ask price is the lowest price a seller is willing to accept. Transactions happen at or between these prices. The difference between bid and ask — the spread — represents a transaction cost and is narrower for highly liquid stocks and wider for illiquid ones.

What moves prices is the aggregate change in expectations. If new information suggests a company's future earnings will be higher than previously expected, buyers become more willing to pay more, sellers want more to sell, and the price rises to reflect the improved outlook. If expectations deteriorate, the reverse happens.

The Major Market Participants

Individual retail investors like you are a relatively small portion of total market activity in most developed markets. The major participants are institutional investors: mutual funds, pension funds, insurance companies, sovereign wealth funds, endowments, and hedge funds. These institutions manage trillions of dollars collectively and are the primary drivers of price discovery and market liquidity.

Market makers are firms or individuals who provide liquidity by continuously quoting both buy and sell prices. They make money from the spread between bid and ask prices and play a crucial role in ensuring that investors can always find a counterparty for their trades. High-frequency trading firms use sophisticated algorithms and extremely fast computer systems to exploit tiny price discrepancies across markets. They operate on timescales of microseconds and their activities both add liquidity and raise questions about market fairness for slower participants.

How Information Flows Through Markets

In modern financial markets, information travels extremely fast. Material company news — earnings reports, management changes, mergers and acquisitions — moves prices within seconds of release. Macroeconomic data — inflation reports, employment numbers, central bank decisions — triggers immediate market reactions globally. The speed of information processing has increased dramatically with electronic trading and the rise of algorithmic trading systems.

This rapid information processing is part of what makes markets difficult to beat consistently. If a piece of public information can move prices within milliseconds, there is very little window for an individual investor to trade on that information profitably. The information is already in the price by the time most people read about it.

What Drives Long-Term Returns

Over the long term, stock market returns are driven by three factors: earnings growth (how much more profitable the businesses in the index become over time), dividend yield (the cash returned to shareholders), and valuation changes (expansion or contraction of the multiple investors are willing to pay for a given level of earnings).

The first two factors — earnings growth and dividends — are driven by real economic activity: innovation, productivity improvement, population growth, and the expansion of commerce. These are the durable sources of long-term returns and are why equities outperform bonds and cash over long periods. The third factor — valuation changes — can significantly boost or reduce returns over medium-term periods but tends to mean-revert over the very long run.

Bond Markets and Their Relationship to Stocks

Bond markets are larger than stock markets by total value and are critically important to understanding equity market behavior. When bond yields (interest rates) rise, they make bonds more attractive relative to stocks, which tends to pressure equity valuations. They also make borrowing more expensive for companies, which affects their cost of capital and future profitability. The relationship between interest rates and equity markets is one of the most important dynamics in financial markets.

Central bank policy — specifically decisions about short-term interest rates and monetary expansion or contraction — affects the entire financial system through its impact on bond yields. Understanding the broad outlines of monetary policy and its market implications is essential foundational knowledge for any investor.