AHR999 compares Bitcoin's current price to two references — its own 200-day trend and a long-term power-law fair value — and combines them into a single number. Below ~0.45 has historically marked good accumulation zones; above ~1.2 has coincided with late-cycle excess.
What Is AHR999?
AHR999 was created to solve a specific, practical problem: dollar-cost averaging is a great strategy, but it treats every week the same, even when Bitcoin is objectively cheap or objectively expensive relative to its own history. AHR999 gives DCA investors a simple signal for when to stick to their normal plan and when historical conditions suggest leaning in harder.
Unlike sentiment-based indicators, AHR999 is purely mathematical — it doesn't care about news, social media, or how anyone feels about the market. It only compares price to two long-run mathematical references.
How It's Calculated
AHR999 combines two separate price ratios:
1. Price vs. 200-day geometric mean. This captures how far today's price has moved from its own recent trend — similar in spirit to the Mayer Multiple, but using a geometric rather than simple average, which weights it slightly differently.
2. Price vs. power-law fair value. Bitcoin's long-term price history fits a power-law growth curve reasonably well — a smooth mathematical trend line extending back to its earliest trading days. This half of the formula checks how far current price sits from that very long-run trend.
AHR999 multiplies these two ratios together. The result is a single number that's low when Bitcoin is cheap on both a medium-term and long-term basis, and high when it's expensive on both — which is what makes it more robust than either ratio used alone.
| AHR999 Range | Zone | Historical Interpretation |
|---|---|---|
| < 0.45 | Deep Value | Historically strong long-term accumulation zones |
| 0.45 – 0.90 | Undervalued | Below trend, favourable for steady DCA |
| 0.90 – 1.2 | Fair Value | No strong signal in either direction |
| > 1.2 | Overheated | Historically associated with late-cycle conditions |
Check today's actual reading, with the live zone and full history, on our AHR999 indicator page.
Reading the Thresholds
The specific numbers (0.45, 1.2) aren't arbitrary — they were derived by looking back at where Bitcoin's price sat relative to this formula during past cycle extremes. That's both the strength and the weakness of any threshold-based indicator: it's calibrated on history that may or may not repeat with the same intensity in future cycles, especially as Bitcoin's market cap grows and price swings naturally compress.
Rather than treating 0.45 and 1.2 as hard lines, it's more useful to think of AHR999 as a dial: the lower it goes, the stronger the historical case for leaning into accumulation; the higher it goes, the more caution has historically been warranted.
Why It Tends to Work
AHR999's underlying logic rests on a genuine, observable pattern in Bitcoin's history: price has repeatedly reverted toward its long-term trend after both euphoric overshoots and panic-driven undershoots. By blending a medium-term reference (200-day trend) with a long-term one (power-law fair value), AHR999 filters out a lot of short-term noise that a purely price-based indicator would react to.
It's also intentionally conservative — because it requires agreement across two different time horizons, it tends to avoid false signals that a single-timeframe indicator might throw off during a sharp but short-lived move.
Limitations
No indicator is a crystal ball, and AHR999 has real limitations worth understanding before you rely on it.
It's backward-looking. Like any indicator built on historical price data, it assumes Bitcoin's future relationship to its own trend will resemble the past. That's a reasonable base case, not a guarantee.
The power-law model is a simplification. A smooth mathematical curve fit to 15+ years of price history is a useful approximation, not a law of physics. As Bitcoin matures, its growth trajectory could genuinely shift.
It says nothing about timing precision. AHR999 can sit in a "cheap" reading for months during a bear market before price actually bottoms. It's a zone indicator, not a timing trigger.
How to Use It
The most durable way to use AHR999 is as a modifier to a dollar-cost-averaging plan, not a replacement for one. Keep your regular DCA schedule running in every zone — that consistency is what actually builds a position over years. Use AHR999 to decide whether to add a bit more than usual when it's deep in Deep Value territory, or to hold your allocation steady rather than increase it when it's firmly in Overheated territory.
It's also considerably more reliable in combination with other indicators than on its own. Pair it with the Mayer Multiple and 200-Week Moving Average for a broader trend picture, or check where it fits into our Cycle Compass composite score, which weighs it alongside 20 other indicators.
For a full rundown of the other major indicators worth knowing, see our guide to 10 On-Chain Bitcoin Indicators Every Investor Should Know.