In one paper the authors draw an analogy with gambling. In normal times the market behaves like a game of roulette; the probabilities are known and largely independent of the investment decisions of the different players. In times of market stress, however, the game becomes more like poker (herding behavior takes over). The players now must give heavy weight to the psychology of other investors and how they are likely to react psychologically.
That’s because there are plenty of tools available to help you. One of the best is stock mutual funds, which are an easy and low-cost way for beginners to invest in the stock market. These funds are available within your 401(k), IRA or any taxable brokerage account. An S&P 500 fund, which effectively buys you small pieces of ownership in 500 of the largest U.S. companies, is a good place to start.
Have you ever asked yourself, "What is stock?" or wondered why shares of stock exist? This introduction to the world of investing in stocks will provide answers to those questions and show you just how simple Wall Street really is. It may turn out to be one of the most important articles you've ever read if you don't understand what stocks represent. Find out the answer to "What is Stock?" and how it comes to exist ...
Keep good records for the IRS. If you’re not using an account that enjoys tax-favored status — such as a 401(k) or other workplace accounts, or a Roth or traditional IRA — taxes on investment gains and losses can get complicated. The IRS applies different rules and tax rates, and requires the filing of different forms for different types of traders. (Here’s an overview of the IRS rules for stock traders.) Another benefit of keeping good records is that loser investments can be used to offset the taxes paid on income through a neat strategy called tax-loss harvesting.
Learning about great investors from the past provides perspective, inspiration, and appreciation for the game which is the stock market. Greats include Warren Buffett (below), Jesse Livermore, George Soros, Benjamin Graham, Peter Lynch, John Templeton and Paul Tudor Jones, among others. One of my favorite book series is the Market Wizards by Jack Schwager.
Financial innovation has brought many new financial instruments whose pay-offs or values depend on the prices of stocks. Some examples are exchange-traded funds (ETFs), stock index and stock options, equity swaps, single-stock futures, and stock index futures. These last two may be traded on futures exchanges (which are distinct from stock exchanges—their history traces back to commodity futures exchanges), or traded over-the-counter. As all of these products are only derived from stocks, they are sometimes considered to be traded in a (hypothetical) derivatives market, rather than the (hypothetical) stock market.