The Dow Divisor keeps the index consistent through time

The Dow Jones Industrial Average was created in 1896

Charles Dow introduced the DJIA on May 26, 1896, as a simple average of 12 industrial stocks. Although it became the nation’s most enduring market index, none of its original companies remain in the Dow today.

The Dow’s price-weighted formula makes stock price matter more than size

Unlike most indices, which weigh companies by market value, the DJIA is price-weighted—meaning higher-priced stocks have more influence on its movements. As a result, a company’s share price matters more than its overall size.

Dow components are chosen by a committee, not a formula

Unlike many indices, the Dow has no strict rules for inclusion. A small committee at S&P Dow Jones Indices uses judgment—favoring companies with strong reputations, steady growth, and broad investor interest.

Critics argue the Dow no longer reflects the modern economy

With only 30 companies and a price-weighted formula, skeptics say the DJIA underrepresents vast sectors of the market. They claim it is outdated, though its close correlation with the broader S&P 500 keeps it relevant.

The Dow now tracks 30 major US companies across various industries

Since 1928, the DJIA has included 30 firms. Today's group spans technology, healthcare, and finance—with Apple, Microsoft, JPMorgan Chase, Pfizer, and Coca-Cola among its most recognized components.

See every company in and out of the Dow since 1928

The index has had 30 companies since 1928. See each company’s tenure on the index and what firms were added or replaced by year and industry.

The Dow remains a shorthand for America’s economic health

For over a century, the Dow Jones Industrial Average has been one of the most closely watched market barometers. Its rises and falls dominate headlines and politics, shaping how Americans perceive the strength of their economy.

In 1999, Microsoft and Intel’s addition signaled the information tech era for the Dow

Microsoft and Intel became the first information technology firms added to the DJIA. Their inclusion marked a turning point—the digital revolution and tech began to drive the American economy.

Relive the biggest swings in the Dow’s history

From the 1929 crash to the Coronavirus Pandemic in 2020, this piece spotlights five of the most dramatic single-day moves in the Dow’s 125-year history.

Watch how the S&P 500 is actually calculated

After accounting for each company's float-adjusted market capitalization (a metric that combines the price of a company's stock, the total number of shares, and the stock's float, which means how many shares are actually available), the S&P 500 formula uses a divisor to create the index number. However, what the divisor is and what it represents are secrets.

Stock indexes track markets through groupings of companies

A stock index measures the performance of selected companies, offering a snapshot of market trends. Examples include the Dow Jones Industrial Average, the S&P 500, and the Nasdaq Composite.

Dow Theory laid the groundwork for modern market analysis

Developed by Charles Dow in the late 19th century, Dow Theory argued that markets move in trends. Its principles—confirmation, trends and volume—still influence technical analysis today.

GE’s removal marked the end of an era for the Dow

General Electric, the last surviving original Dow component, was dropped in 2018, after years of decline. Its exit symbolized the fading dominance of industrial giants and the index’s shift toward technology and healthcare.

Dividends are payments made by a corporation to its shareholders

From the Dutch East India Company paying out the first dividends over 400 years ago to the word “dividend’s” ancient Latin roots, Dividend.com has a full explainer of this investing perk and how individuals can earn income while holding dividend-paying stocks or ETFs.

The S&P 500 has an average intra-year drawdown of -16%

In a given year, the value of the S&P 500 can significantly fluctuate. An intra-year drawdown is the most significant difference between the index's peak and lowest point.

Read about the 'gatekeeper' of the stock market, former index chair at S&P Global

David Blitzer, the former index chair at S&P Global, earned the nickname "gatekeeper" of the stock market after helping decide which companies made it into the S&P 500 for 24 years. Blitzer became a legend in the world of indexing and has a reputation for being even-tempered and always wearing a bow tie.

Dozens of S&P 500 stocks, including Coca-Cola and Walmart—known as the dividend aristocrats—have increased dividends every year for 25 years

The Nasdaq's 'Magnificent 7' companies are responsible for roughly 40% of the Nasdaq 100 index's gains, while the remaining 93 companies account for the other 60%.

You can find the value of a dollar dating back to 1635

The value of a dollar hasn’t been consistent throughout history. An inflation calculator lets you compare the value of dollars from any two years over the past four centuries.

It's difficult for individual investors to purchase IPO shares

Although the process of going public means the general public can invest in a company, the initial investment period is different. Before individual investors get in on the action, investment bankers sell the shares to larger financial institutions who can afford the asking price and risk associated with an IPO.

A startup is trying to create the diamond equivalent of the gold standard

It's called the Diamond Standard Co, and it uses an algorithm to assign standard values to a variety off small diamonds, grouping them together into individual coins. Historically, diamonds haven't been able to be classified as commodities or standardized like gold because they aren't uniform—factors such as clarity, cut, color, and carat size significantly influence the value of a diamond.

Dual-class stock structures separate equity and decision-making authority

In the past few decades, dual-class stock structures have become an increasingly popular way for companies to raise capital in public markets without allocating traditional shareholder voting rights. Meta, Estée Lauder, and The New York Times are companies that are famously dual-class.

How to put on a hedge

These days, hedging your portfolio isn’t just for hedge fund managers. An explainer from Robinhood delves into what a hedged position actually is, why traders put on hedges, and how you, too, can work to guard your holdings against a market downturn. The idea is to derive gains from your portfolio when markets are trending up, down, or sideways.

The national debt of the US has been trending upward for over a century

The national debt of the US fluctuates. A federally managed database is updated daily and shows how the debt constantly changes over a 24-hour period. It’s broken down by what the government owes individual investors (debt held by the public) and what’s due to one sector of the government by another (intragovernmental holdings).

For every $100 you deposit, your bank puts a few cents in the FDIC insurance fund

This is a result of the 1933 Banking Act that established the Federal Deposit Insurance Fund. The law sought to prevent bank runs like those that decimated the banking industry amid the Great Crash and subsequent major depression. Today, individual depositors are insured up to $250K at each bank where they have an account.

CD ladders are an investing strategy in which you buy multiple CDs with different maturity dates

This way, you take advantage of high interest rates with longer-term CDs while keeping liquidity with shorter-term CDs. If you're well acquainted with the basics of CD investing, the Wall Street Journal's Oyin Adedoyin, and guest host Danny Lewis, can tell you how staggering your investments makes good money.

What is the lipstick index?

The lipstick index is an economic theory that breaks down to this: when consumers think an economic downturn is looming, sales for affordable luxury items (such as lipstick) go up. While it's not an economically proven theory, it's still worth considering. So why do consumers exhibit this behavior? Read more about the lipstick index to find out.

While the first exchange-traded fund (a 'basket' of different assets that can be bought and sold on a stock exchange) in the US only launched in 1993, the global ETF market has grown to more than $10T in the short time since.

A century of Billboard issues documenting the evolution of popular music.

An initial public offering or 'IPO' is the process of a private company becoming public by putting shares of the company on the stock market for purchase.

Use this tool to calculate the dollar value of your parental mental load, from meal planning to coordinating after-school care, then see resources that help generate solutions.

Some coin denominations have ridges etched on their sides, partly to prevent counterfeiting, in a practice called 'reeding.'

Warren Buffett's former professor Benjamin Graham is known as the 'father of value investing,' a strategy in which investors seek to buy stocks trading below their intrinsic worth.

Watch this video that uses Lego bricks to explain how venture capital works.

Explore chaos in this simulation of two double pendulums, where small differences in the release angles produce wildly different outcomes.

Electrical grids worldwide must double their power delivery capacity by 2050 to meet surging demand from AI and electric vehicles.

Domino's Pizza's 30-minute delivery guarantee was responsible for the chain's 1980s surge, but it was discontinued after the company was found liable for delivery driver accidents.

Gerrymandering works through two techniques: cracking opposing voters across districts to dilute their power, and packing them into a few to waste their votes in lopsided majorities.

US housing costs have risen by roughly 175% between 1991 and 2026—but a growing number of Gen Zers are becoming homeowners anyway. In 2025, 4% of homebuyers were Gen Z, up from 3% the year before.

The first steps to rebuilding your credit score include getting to know exactly what's on your credit report and figuring out how far you are from the '700 club,' or 'good score' range.

The USPS spent $3.97B in 2024, accounting for .058% of the federal budget.

For centuries, it was common to sleep in two shifts: a few hours at the beginning of the night, and a longer period beginning around midnight

Sony set the standard for cylinder-shaped batteries when it repurposed manufacturing equipment used to make rolls of magnetic recording tape.

Indefinite cloning of some endangered species may not sustain their longevity because cloning success rates decrease as genetic mutations accumulate.

When a Paris department store hesitated to sell Estée Lauder's perfume, she 'accidentally' broke a bottle, causing the smell to spread throughout the store and shoppers to start asking to buy the scent.

In 1945, Surrealist artist Salvador Dalí and legendary animator Walt Disney began collaborating on a short film that was not completed until 2003, years after both men had died.

For centuries, Niagara Falls has been a magnet for daredevils seeking to conquer one of nature's most powerful wonders, with its 200-foot drop and water rushing at 32 feet per second with 280 tons of force.

To reduce wrinkles in clothing, research recommends gentle wash cycles with more water and tumble drying with smaller loads and longer times.

Bone marrow (soft tissue found inside certain bones) generates roughly 500 billion new blood cells each day