A 52-week low is the lowest reported price during the trailing 52 weeks. An all-time low is the lowest price in the historical record that a particular data provider has for that security. Both are descriptions of where a stock has traded, not conclusions that it is undervalued or likely to rebound.
The distinction matters because the two figures use different time windows, and an all-time figure can change with a provider’s historical coverage, split adjustments, ticker history and treatment of corrected trades. Before interpreting either number, identify the source, the observation date and the data adjustments behind it.
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What a 52-week low means
A rolling one-year observation
A 52-week low is the lowest reported stock price in the trailing 52 weeks. Morningstar’s glossary defines it as “The lowest stock price over the trailing 52 weeks.” You can see the definition in its Price $ 52-Week Low glossary entry.
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What price is being measured?
Market services may calculate the low from reported intraday trades or from daily low fields, depending on the feed and product. A displayed number should be read together with its date and the provider’s methodology. Historical stock records commonly include each day’s opening and closing prices, daily highs and lows, and trading volume, as explained in the SEC’s Investor.gov stocks glossary.
That distinction can matter when a stock briefly touches a price during a session but closes much higher. An intraday 52-week low records the touch; an end-of-day series may show only the session’s daily low, and a service that uses closing prices could show neither as its headline statistic. If two websites disagree by a small amount, first check whether they are using the same field, exchange session and quote delay.
What an all-time low means
The lowest price in the available history
An all-time low is the minimum price in the historical record available for that security. “All time” is therefore conditional: a provider can only search the data it has retained and linked to the current security. A newly listed company, a security with an incomplete feed, or a ticker that changed over time may have a shorter history than an investor assumes.
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Why providers can disagree
There is no single universal all-time-low standard. Providers can differ in the start date of their records, whether they include an exchange’s full intraday history, how they connect predecessor tickers, and how they adjust for stock splits or other corporate actions. Two services can consequently display different all-time lows while each is internally consistent. The relevant question is not which number looks most dramatic, but what period and methodology produced it.
Ask whether the provider’s history is adjusted or unadjusted, whether it covers the same share class and exchange, and whether the date shown is the date of the original trade or a date reconstructed after a corporate action. Keep those qualifications with the number whenever you save it in an investment note.
52-week low and all-time low compared
| Feature | 52-week low | All-time low |
|---|---|---|
| Time span | Trailing 52 weeks, recalculated as time passes | Entire historical record available from the provider |
| What it tells you | The lowest reported price in the recent rolling year | The lowest reported price in the provider’s covered history |
| How often it changes | Whenever a new lower trade occurs or an old observation leaves the 52-week window | Usually only when a new lower price is recorded or historical data is revised |
| Dependence on data coverage | Generally limited to the recent year, but still depends on the feed’s completeness | Highly dependent on listing history, ticker continuity and the provider’s archive |
| Corporate-action treatment | Check whether the feed adjusts historical prices for splits and similar events | Check the same adjustments, plus how far back the provider applies them |
| Investment conclusion by itself | None; it is a historical price observation | None; it is a historical price observation |
Neither measure is a valuation ratio, an estimate of fair value or a forecast. A stock can be close to a recent low because its business is deteriorating, because a temporary event frightened investors, or because the broader market fell. The statistic alone cannot distinguish those causes.
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Which figure is more useful?
That depends on the question. A 52-week low helps describe recent trading conditions and can flag that a price is near the bottom of its current range. An all-time low helps place the price in the longest history that a provider can document. Neither is automatically more meaningful: a recent low may be relevant to a short-term risk review, while an all-time comparison may be distorted by an old listing, a split or a missing predecessor history.
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How to tell whether today’s price is near the 52-week low
Morningstar gives this range-position formula:
(current price − 52-week low) / (52-week high − 52-week low)
A result near 0 means the current price is close to the 52-week low; a result near 1 means it is close to the 52-week high. The calculation assumes that the high and low refer to the same period, security and adjustment convention.
Illustrative calculation
Suppose a chart reports a 52-week low of $60, a 52-week high of $100 and a current price of $70. The range position is ($70 − $60) / ($100 − $60) = 0.25, or 25% of the way from the low to the high. This example only explains the arithmetic; it does not indicate that the hypothetical stock is cheap or that it will rise.
If the current quote is $60, the result is zero. If it is $100, the result is one. A value above zero does not mean the stock has recovered in a durable way, and a value near zero does not mean the low is a support level. If the published high and low come from different adjustment settings, the resulting percentage is not meaningful.
How to find and document an all-time low
- Start with the provider’s stated history. Find the earliest date in the chart or downloadable series and note whether the service calls the field “all time,” “maximum history” or something similar.
- Confirm the security identity. Match the ticker, exchange, share class and currency. Do not combine the history of common shares with preferred shares, warrants or a depositary instrument.
- Check ticker continuity. Look for name changes, mergers, spin-offs and predecessor symbols. A current ticker may not represent the entire economic history of the issuer.
- Read the adjustment setting. Record whether prices are split-adjusted, unadjusted or not stated. Use the same setting when comparing services.
- Locate the actual observation. Save the date, price, intraday or daily field and volume. This lets you distinguish a genuine historical low from a display or mapping error.
- Cross-check an unusual result. If the value would change your decision, compare it with an exchange record, regulatory filing or another established data source. Report the qualifications if the records do not match.
This process cannot create a universal all-time number. It creates an auditable statement such as “the lowest adjusted daily low shown by Provider A for this share class, in the history available on October 17, 2026.” That is more precise than presenting an unexplained figure as an absolute record.
What to verify before trusting a striking low
- Identify the security. Confirm the exchange, share class and ticker. A similarly named security or a depositary instrument can have a different history.
- Record the observation date. Write down the date attached to the low, not merely the date on which you viewed the website. A 52-week value changes as the window rolls.
- Read the interval label. Make sure the number is marked “52-week,” “one year,” “all time” or another clearly defined period. Do not treat a 52-week field as an all-time field.
- Check price adjustments. Find out whether historical prices are split-adjusted and how dividends, mergers or spin-offs are handled. An unadjusted series and an adjusted series can show different nominal lows.
- Inspect the underlying day. Look at that session’s open, high, low, close and volume. Investor.gov identifies these as standard historical-data fields; an extreme low without normal volume deserves closer examination.
- Compare an independent record. If the value would materially affect your decision, compare the date and trade with an exchange record, regulatory filing or another established data source. Differences should be explained, not averaged away.
- Look for corrections. Exchanges can cancel or correct erroneous trades. A chart that retains a cancelled print can continue to display a misleading low until its data is revised.
Why an extreme print can mislead
A low can be technically reported yet unrepresentative of a normal market price. During the May 6, 2010 market disruption, Accenture CFO Pamela J. Craig described how an arbitrary threshold affected displayed 52-week lows. In her prepared statement before the Joint CFTC-SEC Advisory Committee on Emerging Regulatory Issues on August 11, 2010, she wrote: “This arbitrary pricing threshold caused the 52-week low for these stocks to be misleading to investors.” The full statement is available as a SEC-hosted PDF.
Craig’s statement said Accenture briefly traded at one cent during the disruption. Trades below $16.40 were subsequently busted, while the NYSE low for Accenture that day was reported as $38.75. Those figures describe that specific 2010 event; they do not establish that ordinary price feeds are generally unreliable or that a low predicts a stock’s next move.
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The practical lesson is narrow but important: when a reported low is far outside nearby prices, investigate the underlying trade and later corrections. Do not silently replace it with a more comfortable number, and do not generalize one unusual episode into a claim that every historical low is defective.
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Why being at a low does not mean a stock is “on sale”
Price is not the same as value
A share price is only one input into valuation. A company’s earnings, cash flow, balance sheet, competitive position, capital needs and expected growth can change while the quoted price falls. A lower price may reflect a genuinely weaker business rather than a bargain.
Possible reasons for a recent decline
- Company-specific problems such as falling sales, lost customers, legal liabilities or financing stress.
- A sector-wide downturn that affects many companies at once.
- Macroeconomic changes, including interest-rate expectations or recession fears.
- A temporary event, such as an earnings miss or regulatory announcement, whose long-term effect is uncertain.
- Market-structure or data problems, including an isolated erroneous trade or a later-cancelled transaction.
The low field cannot tell you which explanation applies. It is a starting point for investigation, not a substitute for reading financial statements and disclosures. A sound review asks what changed in the business, whether the balance sheet can withstand it and what evidence would disprove the idea that the shares are undervalued.
A disciplined way to use the two figures
Step 1: State the exact claim
Write “the stock is at its 52-week low according to [provider] on [date]” rather than “the stock is at an all-time low.” The first statement identifies a rolling interval and source; the second requires evidence about the provider’s entire covered history.
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Repair common Windows errors and clear accumulated junk for a smoother, more stable PC - no reinstall needed.Free scan · no reinstallStep 2: Put the price in range context
Calculate the range position using the 52-week high and low from the same data series. Also note whether today’s price is below, equal to or above the published low after any adjustment. Small differences can result from delayed quotes, rounding or different trading-session cutoffs.
Step 3: Examine the event and the business
Read the company’s latest financial statements, earnings release and material-risk disclosures. Determine what changed around the low and whether the balance sheet can withstand the problem. A chart cannot answer these questions.
Step 4: Test the data quality
Review volume, the day’s trading range and any corporate-action or trade-correction notices. If the low is a single outlier far outside nearby observations, treat it as a data-quality question until verified.
Step 5: Separate observation from decision
Keep the historical fact—where the price has traded—separate from your investment thesis. A decision should rest on your valuation method, time horizon, diversification, risk tolerance and the possibility that the price may continue falling.
Common mistakes and how to avoid them
Confusing “recent low” with “record low”
“At its 52-week low” means the price is at or near the lowest point of the last rolling year. It says nothing about prices before that year. Use “all-time low” only after checking the provider’s full available history.
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Ignoring splits
A stock split changes the number of shares and the nominal per-share price. If one chart adjusts earlier prices and another does not, their historical lows will not be directly comparable. Always read the chart’s adjustment setting.
Using a low without a date
A number detached from its date is difficult to audit. Save the date, provider, currency, exchange and whether the figure is intraday or end-of-day.
Assuming a low predicts a rebound
No source reviewed here establishes a general performance statistic showing that stocks at 52-week or all-time lows reliably recover, outperform or deliver superior returns. Do not convert a location on a chart into a return forecast.
Overreacting to one anomalous trade
Before drawing a conclusion from an unusually small low, check the trade record and subsequent corrections. The 2010 Accenture example demonstrates why this check matters, but it is not a reason to dismiss every low in a modern feed.
Comparing unlike currencies or sessions
Make sure both figures use the same currency and market session. A price converted into another currency, or a quote taken before one exchange has closed, can look inconsistent without indicating an error in either source.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.How to compare figures from different websites
Use a short audit table when sources disagree:
| Item to record | Source A | Source B |
|---|---|---|
| Displayed low | Enter the published value | Enter the published value |
| Label and interval | 52-week, all-time or other | 52-week, all-time or other |
| Date of low | Trading date shown by the provider | Trading date shown by the provider |
| Price adjustment | Adjusted, unadjusted or not stated | Adjusted, unadjusted or not stated |
| Intraday versus daily field | Specify the field used | Specify the field used |
| Coverage notes | Earliest history and ticker continuity | Earliest history and ticker continuity |
If the disagreement remains, report both values with their qualifications instead of presenting one as universally correct. For an investment record, retain a screenshot or export showing the methodology and retrieval date. That record makes it easier to explain later why a value changed after a provider revised history.
Questions to ask before acting on a low
- What exact period does this number cover?
- Which provider produced it, and how far back does its history go?
- Are the prices adjusted consistently for splits and other corporate actions?
- Was the low supported by ordinary volume and a normal trading range?
- Could the trade have been corrected or cancelled?
- What fundamental or market event explains the decline?
- What evidence would disprove the idea that the stock is undervalued?
- Can you tolerate a further decline if the low is not a floor?
Bottom line
A 52-week low is a rolling-year statistic; an all-time low is the minimum in a provider’s available historical record. Both describe past trading, and neither establishes fair value or future performance. Verify the source, date, coverage, corporate-action adjustments, volume and possible trade corrections before using the number. Then evaluate the company and the risks independently rather than treating proximity to a low as a buy signal.
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Frequently Asked Questions
Is a stock at its 52-week low automatically a good buy?
No. The figure only identifies the lowest reported price in a rolling 52-week window. It does not establish fair value, a likely rebound or a floor. Review the company’s financial condition, valuation, risks and the reason for the decline.
Does an all-time low include every price since a company was founded?
Not necessarily. It includes the historical record available and linked by a particular provider. Listing dates, missing archives, ticker changes, share classes and adjustment methods can limit or alter the record.
Why do two websites show different all-time lows?
They may cover different start dates, exchanges or predecessor tickers, use different intraday or daily fields, or apply different split and corporate-action adjustments. Record each provider’s methodology rather than assuming one number is universally correct.
How can I check whether a reported low is real?
Confirm the security and date, inspect the day’s open, high, low, close and volume, review the adjustment setting, and check for corrected or cancelled trades. Compare an unusual print with an independent established record.
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Use (current price − 52-week low) / (52-week high − 52-week low), with all three values from the same series. A result near zero is closer to the low; it is not a valuation or return forecast.
Can a stock hit a 52-week low because of a data error?
A reported trade can be anomalous or later cancelled. The May 6, 2010 Accenture disruption illustrates how a brief one-cent print and later-busted trades could make a displayed 52-week low misleading. Verify an extreme outlier rather than generalizing from it.
What details should I save when citing a low?
Keep the ticker, exchange, share class, currency, provider, interval label, observation date, price-adjustment setting, intraday or daily field, volume and retrieval date. These details make the claim auditable if the feed changes.
Is a 52-week low the same as the lowest price this calendar year?
No. A 52-week low covers a rolling 52-week period and changes every trading day. A calendar-year low is bounded by the beginning of the current year and is a different statistic.
The Bottom Line
A 52-week low covers a rolling year; an all-time low covers a provider’s available history. Verify the source, date, adjustments and trade quality, then assess the business independently.
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