Nvidia’s hitting new all time highs. Your coworker won’t stop talking about the stock he picked that doubled his money. Meanwhile, your S&P 500 index fund is up single digits. It’s hard not to wonder if you’re missing out.
That frustration is real. Watching broad market returns while individual stocks post numbers that make headlines can feel like leaving money on the table.
Before you try to chase the next big winner, it’s worth asking a question professional fund managers can’t even answer for themselves:
Can you really beat the market by picking your own stocks?
By the end of this article, you’ll know what single-stock investing can realistically offer you, what it costs you in time and risk, and where it might fit in your own portfolio.
Key Takeaways
- Even professional fund managers rarely win. 79% of active large-cap fund managers underperformed the S&P 500 in 2025. Over 20 years, that number jumps to 93%.
- Concentration risk is real. Betting big on one stock means betting your future on a single company.
- Diversification takes more work than it looks. Owning many stocks in the same sector won’t protect you if that sector falls.
- Time and skill matter. Picking stocks well takes real research, unless you already have inside industry knowledge.
- A small, deliberate allocation next to a diversified core is a smarter way to test single stocks than going all in.
Why single stocks are so tempting
You’ve seen the headlines. A stock like Nvidia doubles, and everyone wants in.
Broad market funds feel slow by comparison. If you’re only holding an index fund, you won’t catch those huge spikes.
People start looking at big tech names, small caps, or zero day to expiration (0DTE) options.
Here’s the thing: sometimes they’re right. If you pick the right stock at the right time, your returns can crush the S&P 500. The reward is real, which is why so many people want to try.
What it actually takes to pick stocks well
Choosing the right stock takes a lot of work (and luck).
Picking a single stock means you have to:
- Stay on top of any news that might be relevant to your company
- Analyze earnings reports and other financial data
- Understand what the company actually does and how it makes money
It requires a lot of time and effort to find and pick the right stocks to invest in.
Some people love that process. They enjoy learning and have the time and patience to do the required research.
Most people don’t have the time to do deep analysis of the companies they want to invest in (or the general education to understand the complexities of finance). But that’s okay.
However, there’s also a hidden edge some people carry without even knowing. Think about it this way:
- If you work in construction, you’re knowledgeable about the rate of new buildings going up.
- If you work at a restaurant, you’re seeing how many people have extra spending money to eat out.
- Even if you are a DoorDash driver or Uber driver, you can get a sense of people’s spending habits based on how many deliveries or rides you are doing.
Direct industry experience can give you insight that the big wall street bankers don’t have access to.
There’s another thing worth mentioning. Picking your own stocks feels personal. You’re the one making the decisions, not a financial advisor you might see once a year. That can be appealing to some as well.
What happens when you bet big on one company
If you put a large share of your retirement (or just money in general) into one stock, you’re betting your future on a single company out of thousands. That’s a lot to risk.
Companies rise and fall over time. Nobody knows what the best companies are going to be in the next 30 years. Betting your retirement on one company is a very different game than owning the whole market.
History proves the point again and again:
- Enron collapsed from fraud and bad management.
- Pets.com and other dot-com companies burned through cash without ever turning a profit.
- Lehman Brothers was an American investment bank institution that went bankrupt during the Great Financial Crisis in 2008.
- FTX went bankrupt in 2022, even with celebrity endorsements and rapid growth.
Then there are companies that were giants in their time, but no longer exist or are shells of their former selves.
- Sears
- Kodak
- Nokia
- Blackberry
- Yahoo
At the time, it made sense to invest in these companies. They were all large and dominant in their industries. But no one can predict what the future has in store.
Can you really outperform the market?
In the short term it’s possible. In the long term, probably not.
Professional fund managers have Bloomberg terminals that give them access to all sorts of data you and I don’t have access to. They have research teams, insider knowledge, and years of experience.
Most of them still lose to the market.
The data backs this up. According to the latest SPIVA scorecard,
Of all active large-cap U.S. equity funds measured, 79% underperformed the S&P 500® in 2025, worse than the 65% rate observed in 2024 and the fourth-worst year for active large-cap managers over the 25-year history of the SPIVA Scorecards.
Stretch the timeline out, and it gets worse:
89.93% of all actively managed large cap funds underperform the S&P 500 over a 15 year period.
Here’s the question you have to ask yourself:
If professionals with every advantage can’t beat the market consistently and over time, what chance do I have to beat the market?
Why owning many stocks doesn’t guarantee diversification
People think owning 50 or 100 stocks makes them diversified. It’s actually more complicated than that.
If you load up on all tech stocks, they’ll likely move together. If the AI bubble bursts, your whole portfolio takes the hit at once.
Even if you have different stocks across different sectors, what’s their true diversification? Will they all rise and fall together? Will some stocks rise while others fall? Are you willing to invest in defensive names that only do well when economic conditions tank?
What about other investments such as bonds, commodities, etc. How can those diversify your portfolio?
Real diversification means understanding risk across different sectors AND asset classes. That requires knowing about correlations and what assets do well under specific market conditions.
The hidden costs of managing your own portfolio
Index funds like VOO rebalance themselves. You pay a small expense ratio of .03% and it’s done for you.
When you manage your own stocks, that job falls on you. You track each position. You decide when to trim or add. You watch it constantly.
You have to devise a strategy and ask yourself:
- How many stocks am I going to hold?
- What percent of each stock am I going to hold?
- When and how often should I rebalance my portfolio?
- What are my rules for when I want to add a new stock or drop an existing one?
Taxes add another layer of complexity. How your trades get taxed depends on a few things:
- Whether a gain is short-term or long-term.
- Whether the account is a 401(k), a Roth, or a regular brokerage account.
Frequent buying and selling can trigger more tax events than simply holding an index fund long-term.
Picking and managing your own stocks can feel like a part-time job.
Why we keep chasing quick wins anyway
People want to make money and make it fast.
It’s why people go to the casinos (where the house always wins), trade 0DTE options, bet on sports through DraftKings or FanDuel, and why Polymarket and Kalshi have taken off recently.
It’s the allure of making money fast and the quick dopamine hits that you get.
It’s also a consequence of an economic system that leaves most people struggling to stay afloat, but that’s an article for another time.
Investing is a long game. You won’t get rich overnight in the S&P 500. The real engine is compounding, and compounding takes time. Hitting it big on a single stock offers a way to skip the wait.
So where do single stocks fit in a real portfolio?
Most of my own retirement savings sit in plain index funds.
However, I once noticed Microsoft was down significantly in gold terms, and I saw a window. So I put in a small slice of my overall portfolio, treating it as a short-term play rather than a long-term hold.
I set a stop loss and had a plan when I wanted to sell my position.
That’s probably the smartest way to try single stocks if you want to test the waters: a small, deliberate allocation you’re fully comfortable losing, sitting next to a diversified core.
So, should you buy single stocks?
Professionals with full-time research teams mostly can’t beat the market, and that says less about individual investors and more about how efficiently markets price information in the first place.
So the real question isn’t “can I pick the right stock?” It’s “how much of my future am I willing to risk finding out?”
A small, deliberate allocation lets you test your conviction without betting your retirement on the answer. Building wealth was never about finding the next Nvidia. It’s about staying invested long enough to let compounding do what no single stock pick ever could.