Urban Investor’s Dictionary: S&P 500

A benchmark of the U.S. economy, the S&P 500 Index is a unique stock index based on 500 large companies that have common stock listed on the New York Stock Exchange, or the NASDAQ.


The S&P 500, Dow Jones Industrial Average, and NASDAQ are the big three of American Stock Market indices. What separates the S&P from the pack however is its wide breadth of companies listed, both American and non-American based. It unseated the Dow as the preferred index for U.S. stocks. With 500 largest companies on its index, and its method of weighing these companies, the S&P 500 Index is accepted as the most accurate measure of the pulse of the American economic ecosystem.

The S&P follows a methodology that is based on a market and a company’s weighting is based on size, unlike the Dow, which is price weighted and based on the price of the stock, thus giving more expensive stocks a higher weight. A team of analysts, economists, and fiduciary wizards use various factors to determine which 500 stocks go into the index. It is this large and highly analyzed grouping of stocks that makes for such a precisely accurate read of the overall American economy.

Henry Varnum Poor, in 1941 would merge his Poor’s Publishing Company with Standard Statistics and therein formed Standard & Poor’s. The company would take a focus on the analysis and dissemination of financial data. The S&P would emerge from early incantations such as the “Composite Index” on March 4, 1957. It was the first index to be published daily, and today more than $7.8 trillion is benchmarked to it.

Today the S&P 500 Index falls under the worldwide umbrella of the S&P Global 1200 index family. There are other indices in the family such as those that cover mid-cap (S&P MidCap 400) and small-cap (S&P SmallCap 600)

There are many popular investment tools that follow and attempt to mimic the S&P 500. ETFs and Index funds that follow Standard & Poor’s most notable index are abundant. One of the earliest to follow the S&P 500 is Jack Bogle’s Vanguard Fund, which returns have shown overtime has outperformed other popular managed funds. Index replication is another popular way to bang your buck off the S&P. Index replication refers to an individual investor or a fund invests in all the same stocks that are in an index.

string(2769) "

A benchmark of the U.S. economy, the S&P 500 Index is a unique stock index based on 500 large companies that have common stock listed on the New York Stock Exchange, or the NASDAQ.


The S&P 500, Dow Jones Industrial Average, and NASDAQ are the big three of American Stock Market indices. What separates the S&P from the pack however is its wide breadth of companies listed, both American and non-American based. It unseated the Dow as the preferred index for U.S. stocks. With 500 largest companies on its index, and its method of weighing these companies, the S&P 500 Index is accepted as the most accurate measure of the pulse of the American economic ecosystem.



The S&P follows a methodology that is based on a market and a company's weighting is based on size, unlike the Dow, which is price weighted and based on the price of the stock, thus giving more expensive stocks a higher weight. A team of analysts, economists, and fiduciary wizards use various factors to determine which 500 stocks go into the index. It is this large and highly analyzed grouping of stocks that makes for such a precisely accurate read of the overall American economy.



Henry Varnum Poor, in 1941 would merge his Poor's Publishing Company with Standard Statistics and therein formed Standard & Poor's. The company would take a focus on the analysis and dissemination of financial data. The S&P would emerge from early incantations such as the "Composite Index" on March 4, 1957. It was the first index to be published daily, and today more than $7.8 trillion is benchmarked to it.

Today the S&P 500 Index falls under the worldwide umbrella of the S&P Global 1200 index family. There are other indices in the family such as those that cover mid-cap (S&P MidCap 400) and small-cap (S&P SmallCap 600)



There are many popular investment tools that follow and attempt to mimic the S&P 500. ETFs and Index funds that follow Standard & Poor's most notable index are abundant. One of the earliest to follow the S&P 500 is Jack Bogle's Vanguard Fund, which returns have shown overtime has outperformed other popular managed funds. Index replication is another popular way to bang your buck off the S&P. Index replication refers to an individual investor or a fund invests in all the same stocks that are in an index.

"

What Is Beyoncé’s Net Worth?

Photo Credit: Instagram (Canva)

Now that she’s the fifth billionaire musician Updated: Dec 31st 2025 As of December 2025, Beyoncé’s official net worth is an estimated $1 billion, making her a rare musician to reach billionaire status. Forbes recently confirmed this milestone, noting that the combination of touring revenue, music catalog earnings, brand partnerships, and her business ventures pushed

Is Target Still the Worst Store to Shoplift From?

Retail Stores Sales, Newport, USA - 23 Nov 2018 John Minchillo/AP/REX/Shutterstock

Updated: November 20th, 2025 Short answer: Yup — if you were hypothetically considering it. The longer answer: Yes – and here’s how it stacks up. Back in 2025, the folks at Paypath declared Target the ultimate no-go for would-be shoplifters. Their argument: Target doesn’t just take loss prevention seriously, it basically owns it — with

The Motherhood Penalty

Photo by Sai De Silva (Unsplash)

You Lose $20K Each Year Just For Being a Mom You may not know this, but there was a time when smoking was considered “liberated” behavior for women. There was a cigarette company Virginia Slims that was created specifically to attract female smokers during the bad old 1970s. The slogan was “You’ve come a long

How to Get Out of Your Gym Membership Without Paying a Penalty

Gym Jumping Woman - Image by StockSnap for Pixabay

Trying to cancel your gym membership can be more tiring than actually attending that kickboxing class you keep skipping. Getting out of your gym contract can be so tough that people are going to great lengths to avoid paying any penalties. After going into debt living a lifestyle she couldn’t afford, this woman forged fake

What Is Kris Jenner’s Net Worth? 

Kris Jenner

The Momager May Be Worth More Than You Think… Kris Jenner is a pop culture icon for many reasons. While you may have watched her meteoric rise to fame on Keeping Up with the Kardashians — which originally debuted on E! — she’s actually been a fascinating figure in the public eye for ages.  As

What Is Taylor Swift’s Net Worth? 

Taylor Swift for "The Tortured Poet's Department"

Taylor Swift is a megastar singer-songwriter known for her narrative songwriting, catchy pop tunes, and versatility across genres like country, pop, and indie folk. She breaks every music record with ease, partially thanks to her die-hard Swiftie fans who follow her with vigor and buy out every single show. And with Taylor Swift’s net worth

Considering A Microwedding? Here’s How To Plan Yours

Microweddings are the next hottest trend.

Traditional weddings can be incredibly stressful, not to mention super pricey – many newlyweds couldn’t even buy a house with that money. What’s supposed to be the happiest day of your life can often feel like an endless quest for absolute perfection – almost as if the ceremony doesn’t come off flawlessly, the marriage itself

Living la Vida Frugal – Spend Less With Frugal Living

Tiny Home Image by Clay Banks_Unsplash

Everyone says the economy’s healthier than ever, but some of us still find it necessary to make that paycheck stretch…and stretch…and stretch. The better we understand our spending habits, the better we can manage them. Living frugally can benefit you in many ways. You’ll grow more self-reliant, creative, and resourceful as you learn to make