Stocks

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Stocks, also known as equities or shares, represent units of ownership in a corporation and entitle holders to a claim on part of the company’s assets and profits. Modern stock markets have become fundamental to the world’s financial systems, providing a regulated environment where ownership of publicly traded companies is transferred between individuals and institutions.

History

The concept of stock ownership can be traced back to early commercial partnerships in the Mesopotamian Bronze Age, around 2500 BCE, where merchants formed contracts to share risks and profits.

Modern stock trading began in Amsterdam in 1611, when the Dutch East India Company offered shares to the public and the world's first stock exchange was created to facilitate their trade. Stock markets then spread to other financial centers, including Antwerp, London, and Paris.

In the United States, formalized trading began with the signing of the Buttonwood Agreement by 24 brokers outside 68 Wall Street in New York City in 1792, which led to the establishment of the New York Stock Exchange (NYSE). The rise of new exchanges, communication technology, and industrialization drove growth in equity markets throughout the 19th and 20th centuries. Innovations such as the creation of the Dow Jones Industrial Average in 1896 and the electronic NASDAQ platform in 1971 further shaped stock trading and its broader accessibility.

The expansion of the Internet in the late 1990s shifted trading from telephone-based stockbrokers to computer-based, independent, and so-called day traders. While the focus of fast-paced trading has moved from volatile technology-stock IPOs to more liquid derivatives markets, increasing volumes are now traded online, and Internet platforms have grown significantly.

Usage

Stocks are primarily used for investment and trading, enabling individuals, companies, pension funds, and institutions to build wealth, manage risk, and participate in corporate governance through voting rights. Trading occurs on centralized exchanges like the NYSE, NASDAQ, and new digital marketplaces, as well as through brokers and increasingly, alternative platforms for private shares.

Types of stocks include:

• Common stocks: Provide voting rights at shareholder meetings and potential for appreciation, but dividend payments are variable and not guaranteed.
• Preferred stocks: Offer fixed dividends and priority in case of liquidation, but usually lack voting rights.

Stocks are also categorized by company size (large-cap, mid-cap, small-cap), investment focus (growth, value, income), and risk profile (blue-chip, penny stocks).

Some corporations issue different classes of stocks to separate groups of shareholders to give them greater or lesser voting powers. Such corporations in the U.S. typically issue class A and class B shares and give significantly greater voting rights to class A shares. A corporation's first public sale of its shares is called an initial public offering (IPO)

Key Users

Stock investors and traders are central to the functioning of equity markets. Investors typically hold stocks for long periods, aiming for capital appreciation or dividend income. Their strategies may focus on fundamental analysis, diversification, and portfolio management.

Traders, on the other hand, seek to profit from short-term changes in stock prices and may use technical analysis or algorithmic trading. Professional participants include brokers, asset managers, hedge funds, and market makers, each contributing to market liquidity and price formation.

New stock marketplaces

Recent developments have introduced alternative venues for trading shares, such as platforms that support pre-IPO and private company stock transactions. These new marketplaces, including services like Hiive and Forge, offer liquidity for previously hard-to-transact equity stakes, and allow for more direct, peer-to-peer trading. Additionally, electronic trading advancements and decentralized platforms have made global, 24/7 equity trading increasingly feasible.

Tokenization of stocks

Tokenization transforms shares of companies into digital assets recorded on blockchains, providing fractional ownership, faster settlement, and enhanced global availability. There are multiple types of tokenized stocks: natively issued tokens, wrapped tokens backed by actual shares, and synthetic tokens that track share prices via oracles.

The tokenization trend promises greater efficiency but raises new questions about regulatory compliance, custody, and shareholder rights. Companies like Robinhood have begun offering tokenized stocks for near-24/7 trading, and emerging protocols such as SOMA finance are developing regulation-compliant ways to enable decentralized equity markets.

Decimalization of U.S. Stock Prices

In August 2000, the New York Stock Exchange (NYSE) and the former American Stock Exchange (Amex) began the historic transition from fractional to decimal pricing for stocks. This change would fundamentally reshape the U.S. equity markets. Previously, American stocks had been quoted in fractions of a dollar, most commonly in increments as small as 1/8 or 1/16, a system with roots stretching back to the 17th century. For example, a stock might trade at $10 1/16, with the next possible price being $10 1/8.

Initiated under the guidance of the Securities and Exchange Commission (SEC), which required all listed stocks to complete the shift by April 9, 2001, the process began incrementally—with stocks of companies such as Anadarko Petroleum and FedEx among the early adopters. Even before the markets completed their transitions, The Wall Street Journal began decimalizing its Nasdaq stock listings, an early media signal of the coming change.

The move to decimalization enabled stocks to be priced in penny increments (such as $10.01 or $10.02), thus increasing price transparency and market efficiency. According to Daryl Jones, director of research at Hedgeye, this was "a watershed moment for U.S. equity markets," lowering trading costs for both institutional and retail investors. With real-time, penny-level pricing available, price discovery and market access became more democratic, fueling the rise of self-directed investing over the subsequent decades.

However, while most investors benefited from lower costs and heightened transparency, the shift also had unintended consequences for small-cap stocks. In certain cases, dealers became less willing to make markets in less liquid shares, resulting in thinner trading volumes and wider bid-ask spreads for that segment.

Despite these drawbacks, decimalization is widely credited with making the U.S. equity markets more accessible, transparent, and attractive to a broader array of investors.