Bitcoin (BTC) buyers should enjoy the chance to add to their stack below $40,000, says one of the crypto industry’s household names.

In a post on X (formerly Twitter) on Nov. 24, PlanB, creator of the stock-to-flow family of BTC price models, hinted that current levels would not be around long.

PlanB: Time is ticking on $40,000 resistance

Bitcoin is destined to go much higher than its recent 18-month highs, PlanB believes, and time is ticking to increase BTC exposure below $40,000.

Known for his optimistic takes on long-term BTC price growth, PlanB used realized price data to support the case for bulls.

Realized price is Bitcoin’s realized cap — the sum total price at which all BTC last moved — divided by the current supply. It is currently at just below $21,000.

Bitcoin bear market bottoms are characterized by the spot price dipping below the realized price, while bull markets begin once the spot crosses the two-year and five-month realized price levels. These refer to the realized price of coins that last moved within the last two years or the last five months — “younger” coins.

BTC/USD is now once again above all three realized price iterations.

“Enjoy sub-$40k bitcoin … while it lasts,” PlanB commented on an accompanying chart.

Bitcoin realized price chart. Source: PlanB/X

Asked whether the market should expect lower levels from here, PlanB would not be drawn, saying that he simply expected an average BTC price of at least $100,000 between 2024 and 2028 — Bitcoin’s next halving cycle.

Bitcoin hodlers bet on six figures

While PlanB has fielded criticism over stock-to-flow — and conceded that Bitcoin was not able to live up to his expectations during its 2021 bull market — six-figure predictions for the next cycle are increasingly common.

Related: Bitcoin to $1M post-ETF approval? BTC price predictions diverge wildly

As Cointelegraph reported, these are coalescing around an area with $130,000 as its focus for the end of 2025.

The halving itself, meanwhile, due in April 2024, should produce a return to around $46,000, further analysis says.

Earlier this month, PlanB described Bitcoin as being in a “pre-bull market” phase, with the real launch yet to come.

This article does not contain investment advice or recommendations. Every investment and trading move involves risk, and readers should conduct their own research when making a decision.