An article titled "stocks to buy in 2021" reflects what was known and guessed in 2021, and it cannot show how any company did afterward. U.S. advertising rules treat that gap seriously: FINRA Rule 2210 says member firms' communications may not predict or project performance or imply that past performance will recur, and SEC Rule 482 requires investment company advertisements that quote performance to carry a past-performance legend. In October 2026 the SEC approved a FINRA amendment allowing projections under conditions, not yet in effect when this page was checked; no company is named below.
Key takeaways
- A dated list captures one moment; the year in the title is the latest information it can contain.
- FINRA Rule 2210(d)(1)(F) bars member communications from predicting or projecting performance, with limited exceptions. The SEC approved a new exception on October 15, 2026, with no effective date set yet.
- SEC Rule 482 asks fund advertisements to state that past performance does not guarantee future results and to show one-, five-, and ten-year average annual returns for open-end funds.
- Lists that drop failed picks later make results look better than the original picks earned, a distortion called survivorship bias.
- These rules apply to regulated firms; a blog or media article is not automatically covered, which is why readers need their own checks.
What a dated list can and cannot contain
A list written in 2021 can hold a company's business description, its filings up to that date, and the author's reasoning. It cannot hold later events: a failed product, an acquisition, a change of management, a delisting, or a general change in market conditions. Anyone reading such a list years afterward is comparing a snapshot with a record that has kept moving.
The title also hides the selection rule. "Top" can mean largest, fastest growing, most discussed, or simply chosen by the writer. Without a stated rule, the reader cannot tell whether the list could be rebuilt by someone else, which is the basic test of whether it is an analysis or an opinion.
What U.S. rules say about predictions and past performance
The FINRA rule on communications with the public requires that communications be fair and balanced and give a sound basis for evaluating the facts. Under Rule 2210(d)(1)(F), communications may not predict or project performance or imply that past performance will recur. The rule has exceptions for hypothetical illustrations of mathematical principles, investment analysis tools that meet Rule 2214, and price targets in research reports with a reasonable basis. The 2026 amendment described below adds a fourth. A retail communication, under Rule 2210(a)(5), is written or electronic material distributed or made available to more than 25 retail investors within any 30 calendar-day period.
For investment company advertisements, the SEC's Rule 482 in paragraph (b)(3)(i) calls for a legend that past performance does not guarantee future results, and paragraph (d)(3) calls for average annual total return for one-, five-, and ten-year periods for open-end funds other than money market funds. The common thread is that returns are shown over defined periods, with a reminder that the past does not set the future.
Both rules govern regulated firms and their advertising. They do not turn a general article into a regulated communication, and their existence is not an endorsement of any list.
What changed since 2021
Several things moved between 2021 and October 2026, and one of them is the projection rule itself. On October 15, 2026, the SEC approved an amendment to Rule 2210 (FINRA filing SR-FINRA-2026-004) that adds a fourth exception to the ban on projecting performance. Under it, a member firm may present projected performance or a targeted return for a security, portfolio, or strategy if it keeps written policies that tie the material to the likely situation and objectives of the intended audience, discloses the criteria, assumptions, risks, and limitations, and records the source of the figure. The amendment does not cover back-tested or model-portfolio performance. Law firm summaries of the approval say FINRA expects the change to matter mostly for institutional and other sophisticated investors, and that projections remain unavailable for mass retail distribution.
As of October 27, 2026, the amendment has no effective date; FINRA is to announce one in a Regulatory Notice, and until then the existing prohibition applies. The legend and return-period requirements in SEC Rule 482 described above are unchanged in the text read for this page, and the rule's most recent listed amendment dates from November 18, 2024. Readers checking an old list should therefore not assume that a published projection was ever permitted under the rules that governed a retail audience in 2021.
Survivorship bias, illustrated
A list that is updated by quietly removing names that failed will look better than the list as published. The example below is illustrative, with invented numbers.
| Group of ten hypothetical picks | Number | Assumed five-year result | Contribution to average |
|---|---|---|---|
| Still listed after five years | 7 | plus 20 percent each | plus 14 points |
| Delisted or collapsed | 3 | minus 90 percent each | minus 27 points |
| Average of all ten | 10 | minus 13 percent | |
| Average of the seven survivors only | 7 | plus 20 percent |
Looking only at the survivors turns a loss of 13 percent into a gain of 20 percent. A fair review of an old list needs every original name, including those that no longer trade.
A checklist for any dated stock list
- Does the list state its publication date and the date of each figure?
- Is the rule for inclusion written down?
- Does the author disclose any holding, sponsorship, or affiliate payment?
- Are claims about AI backed by a company filing, such as an annual report, rather than by a press release?
- If the list was revised, are removed names still shown?
- Does the text project returns? If it comes from a regulated firm, Rule 2210 is the relevant benchmark, including the amendment once it takes effect.
Advertising and disclosure rules are described here as background. Nothing above is a recommendation to buy or sell, a ranking, or a price forecast, and portfolio decisions are best discussed with a registered professional.
FAQ
Can an old stock list be used to judge a company today?
Not reliably. The list shows what an author thought at one date. Current judgment needs current filings, which are searchable on the SEC's EDGAR database.
Does past performance predict future results?
Securities rules assume it does not guarantee them. SEC Rule 482 requires the legend for fund advertisements that quote performance.
Why do regulators limit predictions in advertising?
FINRA's rule requires communications to be fair and balanced. Projections of performance can mislead retail investors because they present an uncertain outcome as expected. The 2026 amendment allows projections only with written policies, disclosure of assumptions and risks, and recordkeeping.
Can broker-dealers now publish projected returns?
Not yet. The SEC approved the change on October 15, 2026, but FINRA had not set an effective date as of October 27, 2026, and the earlier prohibition remains in force until it does.
Are online articles covered by FINRA Rule 2210?
The rule covers communications by FINRA member firms. A general article by a publisher that is not a member firm is not covered by that rule by default.
Related reading
- AI stock lists organized by industry
- AI cryptocurrency lists from 2021
- What AI costs businesses
- Why a low share price is not a small company
More in AI Basics.
Last verified: October 2026
Sources
- Rule 2210, Communications with the Public, FINRA Manual, current version
- FINRA Rule 2210 amendment (SR-FINRA-2026-004) approved by the SEC, October 15, 2026, as summarized by Mayer Brown, October 2026
- 17 CFR 230.482, Advertising by an investment company as satisfying requirements of section 10, Securities and Exchange Commission, Code of Federal Regulations