If you’ve hit middle age and managed to earn a substantial sum investing in the stock market, congratulations, you could be well on your way to building a sizable nest egg for your retirement.

One common piece of advice people receive in their early years of investing is to put their money in a fund that tracks a market index like the S&P 500. Even legendary investor Warren Buffett recommends this approach for everyday Americans. Investing in an S&P 500 index fund gives you exposure to the top-performing companies in the U.S. across a broad range of sectors. As these companies grow — or, at times, falter — so does your investment.

But let’s say, despite having great success, you feel ready to move on from investing in the S&P 500. At the age of 35, your investment has grown to $300,000, and you want to use some of it to make a few riskier bets on individual stocks. This could potentially generate wealth at a much faster pace, but you could also lose it just as quickly.

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Here’s what you should know about investing in individual stocks. And it goes without saying: Nothing in the stock market is guaranteed.

In contrast to passively investing in index funds, stock picking is much more active, and involves knowing the market well. You need both the time to dedicate to reading market reports daily and a healthy appetite for risk, knowing that not all your picks can be successful.

Investing in individual stocks is a choice that is only for those who want to take on investing as a serious hobby or maybe even as a second career. Stock picking entails a lot of study. To become a great investor, you have to be willing to first invest considerable time to understand the market, the history of growth and decline across a number of industries, and to stay on top of reports from reputable trading firms.

However, if you’re eager to become a unicorn stock hunter, there’s the potential for greater returns than an S&P 500 index fund can offer. Experts advise against trying to time the market, since day-to-day outcomes tend to be unpredictable, but there’s room to spot an opportunity for buying low to potentially sell high. Moreover, individual stock buyers can get access to dividend-paying stocks, which you can either use to supplement income or reinvest for your retirement fund.