Week of 19 January 2026: Bitcoin falls 7.48% and Ether 14.22% in a one-way week
When both assets set their weekly high at the open and their low at the end of the week on below-average volume, how should the gap between Bitcoin and Ether be read?
BTC fell from 93,673.14 to 86,670.36 (-7.48%) and ETH from 3,284.04 to 2,816.89 (-14.22%). Both set their high in the first hour on Monday and their low on Sunday. Volume ran below the prior twelve-week average for both, and ETH lost 7.29% against BTC.
What the data shows. BTC set its high of 93,673.14 in the first hour on Monday and its low of 86,074.72 at 23:00 UTC on Sunday, so the week moved in one direction and BTC never traded above its open. The -7.48% weekly return ranked at the 14th percentile of the 414 weeks on record. ETH followed the same shape: high 3,284.58 early Monday, low 2,787.00 at 20:00 UTC on Sunday, close 2,816.89, a -14.22% week at the 7th percentile. The two moved closely hour by hour (correlation 0.92) but ETH fell further against BTC, with the ETH/BTC ratio down 7.29%. Tuesday was the worst day for both (BTC -4.54%, ETH -7.83%); Wednesday the best (BTC +1.16%, ETH +1.44%). Dollar volume was 0.71 times the prior twelve-week average for BTC and 0.80 for ETH. Both closed in the lower third of their range.
What it does not show. The candles do not say why prices fell. They identify no sellers, no position sizes and no forced liquidations. Below-average volume does not prove the decline was weakly held; it only shows the moves came with less turnover than the prior twelve weeks. The Sunday lows arriving in the week's final hours do not establish that they were final, and the ETH/BTC gap says nothing about which asset is cheaper.
What a careful desk would check. Realised volatility (the size of the swings that actually happened, scaled to a yearly figure) was 39.4% for BTC and 60.7% for ETH, and ETH's range of 17.85% was roughly twice BTC's 8.83%. The largest hourly moves were modest: -2.97% for BTC at 16:00 UTC on Wednesday and +4.38% for ETH at 19:00 UTC the same day, so the decline was spread across many hours rather than concentrated. A desk would ask whether its sizing accounted for ETH's higher volatility and whether stops placed near the Sunday low could have been filled in the week's last hour.
Funding. BTC perpetual funding averaged 0.0054% per eight hours and stayed positive (0.0013% to 0.01%). ETH averaged 0.0029%, ranging from -0.0029% to 0.0086%. Longs paid a small carry while price fell. At these sizes the reading is a running cost, not evidence of crowding.
What would change this reading
- If BTC trades below its weekly low of 86,074.72 in a later week, this decline reads as the start of a further leg rather than a pause.
- If ETH stops falling faster than BTC and the -7.29% weekly move in the ETH/BTC ratio reverses, the gap reads as a relative unwinding rather than an Ether-specific move.
- If volume rises back above its prior twelve-week average while price holds the lower third of the range, the week's low-turnover decline is being actively reworked.
Terms
- realised volatility
- how much the price actually swung over a period, expressed as a yearly percentage
- percentile
- the share of past weeks with a lower value; the 7th percentile means only 7% of past weeks fell further
- ETH/BTC ratio
- the price of one Ether expressed in Bitcoin; it falls when Ether underperforms Bitcoin