Week of 14 September 2026: Bitcoin gains 5.64% and Ether 6.79%, both closing near weekly highs
After falling early in the week, Bitcoin and Ether closed near their weekly highs. What do the price path, volume and funding (payments between long and short holders of perpetual futures, which have no expiry) show, and what do they not show?
For a desk sizing risk or a lender setting margins, the week's range and largest swings matter as much as its direction. BTC rose from 76,842.01 to 81,178.00 (+5.64%) and ETH from 2,477.10 to 2,645.21 (+6.79%), after both hit their weekly low in the same hour on Tuesday 15 September. BTC funding stayed positive, averaging 0.0071% per eight hours; ETH averaged 0.0037% but dipped to -0.0082%.
What the data shows. Both assets bottomed first and rose afterwards. The BTC low of 74,967.97 and the ETH low of 2,358.88 came in the same hour, 18:00 UTC on Tuesday 15 September, which was also the worst day for each (-3.25% and -4.67%). The best day was Friday 18 September (BTC +5.85%, ETH +6.74%), which also included the largest hourly move of the week (2.6% and 2.09% in the hour starting 13:00 UTC). Highs followed a day later: BTC reached 81,951 at 15:00 UTC and ETH 2,668 at 17:00 UTC on Saturday 19 September. Both closed in the upper third of their weekly ranges: the close location (where the close sat within the week's high-low range) was 88.9% of the way up for BTC and 92.6% for ETH. Volume ran above the prior twelve-week average for both, 1.13 times for BTC and 1.50 times for ETH. The weekly returns ranked at the 77th and 75th percentiles of 448 recorded weeks.
What it does not show. The hourly price records (open, high, low and close for each hour) carry no information about cause, about who was buying, or about what followed, and one week's path cannot forecast the next. The percentiles place this week above the historical median but well short of the extremes. BTC and ETH remain 35.58% and 44.28% below their 52-week highs, so the gain came within a broader decline from their peaks rather than at a new high.
What a careful desk would check. The four prior weeks were mixed for each asset: BTC +23.58%, -0.07%, +3.42%, -4.36%; ETH +31.31%, -1.89%, +4.04%, -1.49%. A single strong week after surges of 23.58% and 31.31% reads differently from one after a quiet stretch. Realised volatility (the size of the swings that actually occurred, scaled to a yearly figure) was 34.9% for BTC and 44.0% for ETH. A position sized for those levels still had to absorb a 3.25% and 4.67% down day before the recovery.
Funding. BTC funding averaged 0.0071% per eight hours and never turned negative (low 0.0028%, high 0.01%). ETH funding averaged 0.0037%, with a high of 0.01% and a low of -0.0082%, so it did not stay positive all week. Positive funding means longs (holders betting on a rise) were paying shorts (holders betting on a fall), a running cost that the weekly gains more than covered on average.
What would change this reading
- If a later week trades below Tuesday's low of 74,967.97 (BTC) or 2,358.88 (ETH), the recovery would look more like a bounce inside a decline than a turn, though a single break would not settle that on its own.
- If BTC closes back below its weekly open of 76,842.01, this week's 77th-percentile gain would have been given back, and the mixed prior weeks would carry more weight.
- If ETH keeps outperforming, the ETH/BTC ratio (ETH's price measured in BTC) would rise beyond this week's 1.08% gain, which matters to anyone holding one asset against the other.
- If funding stays positive near 0.01% per eight hours while prices stall, holders of long positions would keep paying to hold a position that has stopped rising.
Terms
- realised volatility
- how much the price actually swung over a period, scaled to a yearly percentage
- funding rate
- the periodic payment between long and short holders of a perpetual futures contract; positive means longs pay shorts
- perpetual futures contract
- a futures contract with no expiry date, kept close to the spot price by funding payments
- close location
- where the week's closing price sat inside its high-low range, as a percentage of the way up from the low
- ETH/BTC ratio
- the price of ETH measured in BTC; it rises when ETH outperforms BTC
- percentile
- the share of past weeks with a lower value; the 77th percentile means 77% of the 448 recorded weeks were lower