Bitcoin “bottom” timeframe tightens as BTC in loss nears 50 days

Bitcoin’s path toward a potential macro bottom is once again being traced with onchain “supply in loss” timing and investor cost-basis models that suggest the market’s late-bull momentum may be fading.

In a new read of historical patterns, K33 Research highlighted that more than half of the BTC supply has been held at a loss for the first time in this bear market—an inflection point that, in past cycles, has tended to precede the final leg of drawdowns and the start of a sturdier post-bottom recovery window.

Key takeaways

• According to K33 Research, BTC supply in loss crossed 50% on June 5, marking a key bear-market threshold.
• K33 says the period from that 50% crossing to a macro bottom has ranged from 13 to 101 days in historical bear markets.
• As of July 17, CryptoQuant data shows supply in loss at 46%, implying the “countdown” is still in progress.
• CryptoQuant’s realized cap variance model (RCV) is reported to be in the bottom 6% of its historical range, with a Z-score at -2.35—consistent with late-stage bear conditions.

Why supply in loss is again driving “bottom” timing

In its H1 2026 Round-Up report, K33 Research pointed to a classic onchain metric: the share of Bitcoin held at a loss, based on investor cost-basis versus current market price.

K33 frames supply in loss as a practical yardstick for where Bitcoin often is in the lifecycle of a bear market. The firm noted that once this measure moves above 50%, the subsequent time to a macro bottom has historically been limited to a relatively defined “window”—with the shortest observed case lasting just 13 days in 2022.

In longer or more drawn-out drawdowns, the metric has taken considerably more time. K33 cited examples from prior cycles: in 2018, the decline required 23 days after the 50% supply-in-loss mark; in 2014, Bitcoin continued to drop for roughly 101 days after the same threshold was reached.

For the current cycle, K33 said the 50% crossing occurred on June 5. With about 42 days having elapsed since that point, the current “bottom window” is now described as the second-longest on record for Bitcoin among bear markets studied—an observation that matters because it suggests this drawdown phase is not yet compressed into the earliest historical end-game, even if it is moving into the later stages.

K33 also added that returns over the year after these threshold-driven periods “tend to be very solid,” reinforcing why traders and long-term investors continue to watch the supply-in-loss gauge rather than relying solely on price action.

What the latest onchain readings imply for timing

While K33 anchored the narrative to the 50% supply-in-loss break, CryptoQuant’s dashboard data provides the near-term checkpoint. In earlier commentary, Axel Adler Jr., an onchain analytics contributor on CryptoQuant, suggested supply in loss was roughly “two months away” from levels historically associated with bear-market bottoms.

As of July 17, CryptoQuant data puts supply in loss at 46%. Combined with the June 5 crossing reported by K33, that difference helps explain why analysts are still treating the move as a countdown rather than a completed cycle signal: the market is below the historical 50% threshold only after having crossed it, and the current reading indicates the “loss-heavy” ownership phase is easing but not yet fully resolved.

For investors, the key is not the exact day count but the relationship between supply-in-loss behavior and how markets tend to transition from capitulation-heavy distribution toward stabilization. If the metric continues to normalize in line with past bear-market arcs, it supports the notion that risk may be tilting toward the later stages of the drawdown rather than the beginning of a fresh leg lower.

Cost-basis models add a “late bear market” signal

Beyond supply in loss timing, CryptoQuant also pointed to an investor cost-basis indicator it described as showing rare readings. The model in focus is realized cap variance (RCV), which compares realized cap to market cap and then tracks that spread relative to its rolling historical distribution.

In a CryptoQuant QuickTake blog post published on Thursday, contributor Crazzyblockk explained that RCV is designed to isolate how stretched or compressed investor cost basis has become versus current valuation, using the variance itself rather than price alone.

“When that variance compresses into deeply negative z-score territory, the emotional premium built during rallies has largely been priced out. The metric doesn’t read narrative, it reads the distribution of capital.”

The same post said the RCV currently sits in the bottom six percent of its historical range. It also highlighted the standardized Z-score value at -2.35, describing this as an indication that Bitcoin may be in the later stages of a bear market.

CryptoQuant’s commentary went further by noting precedent: the post reported that previous stretches spent extended time below a -2.0 Z-score—citing late 2018, mid-2022, and early 2015—before being associated with forward twelve-month returns above 75%. The historical comparison matters because it positions the present reading not just as “bear market,” but specifically as a regime that has tended to precede substantial improvement after the bottom phase.

The most extreme example referenced was a Z-score of -4.68 in November 2018, which the post said landed almost exactly on Bitcoin’s cycle bottom near $3,792.

What to watch next as the “countdown” unfolds

For now, the most actionable takeaway is that two independent onchain lenses—K33’s supply-in-loss threshold timing and CryptoQuant’s realized cap variance regime—are pointing to the same broad phase: late-stage bear market conditions rather than an early, fresh destabilization. Readers should watch how quickly supply in loss continues to drift down from the 50% crossing and whether RCV remains pinned in deeply negative Z-score territory, since those are the signals most likely to confirm whether the cycle bottom window is narrowing or extending further.