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Keith Noonan has no position in any of the stocks mentioned. The Motley Fool has positions in and recommends Bitcoin and Ethereum. The Motley Fool has a disclosure policy.
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Many penny stocks are traded so cheaply because the businesses behind them aren't worth much more than that.
Penny stocks, or shares trading below $5 with market capitalizations under $250 million, attract investors looking for outsize returns at a low entry price. The appeal is understandable: Buying early into a small company before it grows into something much larger is one of the most rewarding things you can do as an investor. But penny stocks come with real risks that every investor should understand before diving in.
We'll show you the top penny stocks, explain what to look for when evaluating them, and outline the risks so you can invest with eyes open and a clear head.
Like all stocks, penny stocks can be categorized in a variety of ways -- some of which overlap given the underlying company's profile.
Not all penny stocks are equal. The best candidates share a few important characteristics:
If you are drawn to penny stocks because of their low price per share, it is worth knowing that fractional share trading now allows you to invest in almost any stock, including high-priced ones like Microsoft or Amazon, for as little as a few dollars. This opens up access to higher-quality companies without requiring a large upfront investment.
Investors seeking high growth potential without the heightened risks of penny stocks may also want to explore small-cap stocks more broadly. Not all small companies trade at penny stock prices, and many offer compelling growth opportunities with stronger financials and greater transparency.
Micro-cap stocks can overlap with penny stocks in some cases, but the two categories are distinct. For a company to be classified as a penny stock, its shares must trade below $5. Meanwhile, a micro-cap stock is a company with a market capitalization between $50 million and $300 million. Penny stocks will often have market capitalizations below $300 million, but not all micro-cap companies are penny stocks.
| Name and ticker | Market capMarket cap calculated using publicly traded shares outstanding only. Does not include unlisted, private, or dual-class non-traded shares. Implied market cap may vary. | Dividend yield | Industry |
|---|---|---|---|
| Gct Semiconductor (NYSE:GCTS) | $177.5 million | 0.00% | Semiconductors and Semiconductor Equipment |
| Canaan (NASDAQ:CAN) | $199.9 million | 0.00% | Technology Hardware, Storage and Peripherals |
| Cognition Therapeutics (NASDAQ:CGTX) | $81.5 million | 0.00% | Pharmaceuticals |

Penny stocks follow the same basic valuation mechanics as any other stock: share price reflects what another investor is willing to pay on the open market. The key differences are volatility and liquidity.
Penny stocks tend to be far more volatile than larger stocks, often experiencing big price swings that are disconnected from any meaningful change in the underlying business. They also tend to have lower trading volume, which reduces liquidity and can create wide bid-ask spreads, making it harder to buy and sell efficiently. If macroeconomic conditions worsen or business performance disappoints, this opens the door to large sell-offs.
One common misconception is that a low share price signals greater growth potential. In reality, a company's total value is determined by multiplying its share price by its shares outstanding. A company with one million shares at $100 is worth exactly as much as one with 100 million shares at $1. The higher-priced company is very likely the stronger business.
Penny stocks carry substantial risks compared to ordinary stocks. The risks include the following:
GCT Semiconductor (GCTS -2.07%) designs 5G chipsets to support uses including terrestrial broadband, satellite connectivity, and Industrial Internet of Things technologies. The company's revenue performance has been uneven, and the business continues to post large net losses relative to its size. Still, the stock's high risk also comes with significant upside potential if the tech specialist secures substantial contracts from commercial and defense customers. Uncertainty surrounding the company's product ramps means the stock is very risky, but there's a chance it could deliver explosive gains.
Cognition Therapeutics (CGTX +2.43%) is a clinical-stage biotech company developing treatments for Alzheimer's disease and Lewy Body Dementia, among other degenerative central nervous system disorders. As a clinical-stage biotech, Cognition Therapeutics does not yet have any treatments on the market -- but its stock could see big gains if favorable data emerges from its trials.


Canaan (CAN +1.06%) is a Bitcoin (BTC +0.73%) mining hardware specialist that also holds the market-leading cryptocurrency as part of its treasury strategy. The company also holds a much smaller position in Ethereum (ETH -0.45%). The stock is very high-risk, but it could see significant valuation gains in conjunction with a strong bull market for Bitcoin. Canaan has continued to build its Bitcoin holdings, and appreciation for the token could help push the stock higher.