Finally, the other factor: risk tolerance. The stock market goes up and down, and if you’re prone to panicking when it does the latter, you’re better off investing slightly more conservatively, with a lighter allocation to stocks. Not sure? We have a risk tolerance quiz — and more information about how to make this decision — in our article about what to invest in.
Choose your trading partner wisely. To trade stocks you need a broker, but don’t just fall for any broker. Pick one with the terms and tools that best align with your investing style and experience. A higher priority for active traders will be low commissions and fast order execution for time-sensitive trades (like our picks for best online platforms for active traders/day traders). Investors who are new to trading should look for a broker that can teach them the tools of the trade via educational articles, online tutorials and in-person seminars (see NerdWallet’s round-ups for the best brokers for beginners). Other features to consider are the quality and availability of screening and stock analysis tools, on-the-go alerts, easy order entry and customer service.
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To keep costs as low as possible, famous investors like John Bogle and Warren Buffett recommend buying and holding the entire stock market. Known as passive investing, it is a buy and hold strategy where you buy an entire market index, typically the S&P 500, as a single mutual fund or exchange traded fund (ETF). By buying an entire index, you are properly diversified (have shares in ~500 large companies, not just one), which reduces your risk long term. In fact, John Bogle is credited with creating the first index fund.
By the end of October, stock markets in Hong Kong had fallen 45.5%, Australia 41.8%, Spain 31%, the United Kingdom 26.4%, the United States 22.68%, and Canada 22.5%. Black Monday itself was the largest one-day percentage decline in stock market history – the Dow Jones fell by 22.6% in a day. The names "Black Monday" and "Black Tuesday" are also used for October 28–29, 1929, which followed Terrible Thursday—the starting day of the stock market crash in 1929.
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.