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Common Stock Investing Mistakes

By Allen Krewzz
Published July 4, 2026Updated July 4, 2026
Common Stock Investing Mistakes

Panic-Selling During a Downturn

Chasing Recent Performance

Failing to Diversify

Employer stock deserves extra caution: If you receive company stock or stock options as compensation, remember that your income and a concentrated equity position both depend on the same employer — a form of risk concentration worth actively managing, not ignoring.

Trading Too Frequently

Ignoring Fees and Costs

Key Takeaways

Frequently Asked Questions

What's the single most common mistake new investors make?

Is it a mistake to check my portfolio every day?

How do I avoid emotional investing decisions?

Conclusion

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