What is ATHBuy?
A smarter way to find buy prices
ATHBuy is a free calculator designed for investors who want a simple, systematic framework for identifying when a stock may be trading at a meaningful discount. No charts required. No technical analysis. Just math.
The concept is straightforward: every great company has an all-time high price — the peak value the market has ever assigned to it. When a stock drops significantly from that peak, it can represent a compelling buying opportunity for investors who believe in the company's long-term value.
This calculator takes the all-time high of any stock and instantly shows you four key discount levels so you can make informed, objective decisions about when to enter a position.
The Four Buy Levels
How the percentages work
The calculator is based on a straightforward discount-from-ATH methodology. Each level represents a meaningful price threshold that investors use as a potential entry point.
10% Off
Minor pullback from peak. Common in healthy bull markets. Good for high-conviction positions in strong companies.
50% Off
Stock has been cut in half. Often occurs during broad market corrections or sector-specific downturns.
75% Off
Deep value territory. The company has lost three-quarters of its peak value. High risk, high potential reward.
90% Off
Near-wipeout levels. Speculative only. Reserved for investors with high risk tolerance and strong fundamental conviction.
How to Use It
Three steps to your buy levels
1
Enter a ticker or ATH price — type any US stock ticker symbol and click Fetch ATH to automatically retrieve the all-time high price. Or enter the ATH manually if you already know it.
2
Review your four buy levels — the calculator instantly shows you the exact price at each of the four discount levels, along with the dollar amount below the ATH.
3
Make your decision — compare the current trading price of the stock against your buy levels. Use this as one input in your broader investment research, not as standalone financial advice.
Ready to use it?
Run your first calculation
The calculator is free, requires no account, and works on any device. Try it with any ticker you're researching right now.
ATHBuy.com is for informational purposes only.
Nothing on this site constitutes financial, investment, or legal advice.
Always conduct your own due diligence before making any investment decision.