A share price under USD 10 says how much one share costs, not how large, cheap, or risky a company is. U.S. securities rules draw their own line lower: under 17 CFR 240.3a51-1, a stock priced under USD 5 is generally a "penny stock" unless an exclusion applies, and exchanges set separate minimum-price standards for staying listed. Because "AI stock" has no official definition either, a list of AI stocks under USD 10 combines two informal labels.
Key takeaways
- Share price alone does not measure company size; market capitalization is price multiplied by shares outstanding.
- The SEC rule defining a penny stock uses a USD 5 test, with exclusions for certain exchange-listed securities and for issuers that meet asset or revenue tests.
- A stock priced between USD 5 and USD 10 is outside the price test of that rule, and a stock below USD 5 may still be excluded.
- The New York Stock Exchange treats an average closing price below USD 1.00 over 30 trading days as a continued-listing problem.
- No company is named and no stock is recommended.
Price per share is a unit, not a size
A company decides how many shares to issue, so the number on the quote screen depends partly on that choice. Market capitalization, the figure that reflects what the market collectively pays for the whole company, equals the share price times the number of shares outstanding. A stock split shows the point: in a two-for-one split the price halves and the share count doubles, and the company is worth what it was a moment earlier. A reverse split does the opposite, which is how a low price can be raised without any change in the business.
The table below is an illustrative example with invented companies and round numbers. It is not data about any real firm.
| Illustrative company | Share price | Shares outstanding | Market capitalization |
|---|---|---|---|
| Company A | USD 8 | 500 million | USD 4.0 billion |
| Company B | USD 80 | 50 million | USD 4.0 billion |
| Company C | USD 2.50 | 40 million | USD 100 million |
Companies A and B are the same size despite a tenfold gap in price, and Company A would appear on a "stocks under USD 10" list while B would not. A list built on a price cap therefore sorts by a number that carries little information about scale.
What the penny stock rule actually says
The Securities and Exchange Commission rule defining "penny stock" (17 CFR 240.3a51-1) starts from an equity security and then lists what is not one. The first exclusion covers certain securities listed on a national securities exchange or a qualifying quotation system, where the listing standards include features such as a minimum bid price of USD 4 at initial listing. Securities of registered investment companies and certain options are excluded as well. Paragraph (d) excludes a security with a price of USD 5 or more, measured by transaction price or inside bid. Paragraph (g) excludes issuers with net tangible assets above USD 2 million after three years of operation (above USD 5 million if younger), or average revenue of at least USD 6 million over the last three years.
Two practical points follow. A stock priced between USD 5 and USD 10 is outside the price test, so the label does not apply to it on price grounds. And a stock under USD 5 that is listed on a qualifying exchange may not be a penny stock under the rule at all. The definition is a legal category tied to how a security trades and who issued it, not a verdict on quality.
Exchange minimums and why they matter for very low prices
Exchanges set their own standards for staying listed. In a September 2, 2009 notice posted by the SEC, the New York Stock Exchange described its dollar price standard in Section 802.01C of its Listed Company Manual: a company falls below it when the average closing price of its stock is under USD 1.00 over a consecutive 30 trading-day period, and it then has six months after notification to bring both the price and the average price back above USD 1.00. The SEC-hosted notice concerned changes to the cure provisions, and the rule has been amended since. Law-firm summaries report that the SEC approved an NYSE change in January 2025 that limits how reverse splits can be used to cure a price deficiency, so the exchange's current manual controls. Other exchanges publish comparable standards in their own rulebooks, which were not retrieved for this article.
The result is that stocks priced very low can face delisting procedures, and a company may respond with a reverse split. A higher price after such a split reflects the share count, not an improvement in the business.
Reading a price-capped list of AI companies
Because the "AI" label is informal, a short list of AI-related companies under a given price can mix firms with very different relationships to the technology: some sell it, some use it in products, and some mention it in a press release. Questions that help separate them:
- What is the market capitalization, not just the price?
- Is the stock listed on a national exchange, and has the company received a listing-standards notice?
- Has the company done a reverse split recently?
- Does the annual report give AI-related revenue as a number, or only describe AI in general terms?
- Do the company's filings, rather than its own promotional material, support the AI claim?
The text covers securities definitions for background only. It gives no investment guidance, picks no stock, and forecasts no price; questions about a personal portfolio are for a licensed professional.
FAQ
Is every stock under USD 10 a penny stock?
No. The SEC rule uses a USD 5 price test, and even below that line exclusions apply for certain exchange-listed securities and for issuers that meet net tangible asset or revenue tests.
Does a lower share price mean a stock is cheaper?
Not by itself. Cheapness depends on what the market pays relative to the company's earnings, assets, or sales. Price per share only reflects how many shares exist.
Why do some low-priced stocks do reverse splits?
Exchanges set minimum price standards for continued listing. A reverse split reduces the share count and raises the quoted price, which can restore compliance with a price standard without changing the company's value.
Is there an official list of AI stocks?
No official list was found in the regulatory materials reviewed. Media outlets and fund providers each use their own selection rule.
Related reading
- Lists of AI stocks sorted by industry
- Another page on AI stocks under USD 10
- What an AI stocks to buy claim leaves out
- How AI is changing work
More in AI Basics.
Last verified: October 2026
Sources
- 17 CFR 240.3a51-1, Definition of "penny stock", Securities and Exchange Commission, Code of Federal Regulations
- Notice of Filing and Immediate Effectiveness of Proposed Rule Change to Modify the Cure Provisions under its Dollar Stock Price Continued Listing Standard (Release No. 34-60612), New York Stock Exchange LLC via the SEC, September 2, 2009