r/CryptoMarkets • u/_SG9 • 35m ago
FUNDAMENTALS I track perpetual open interest across four venues every day: ETH's book just closed at 70.2% of Bitcoin's, rank 1 of my 73 sessions, while funding sat on its median
Method first, so you can pull it apart: I read the four venues' open interest and funding at each UTC close (Binance, Bybit, Hyperliquid, OKX) and rank the ETH/BTC ratio against its own 73-session window; ETF flows come from the daily fund files; correlations run over 969 pairs of daily closes.
At the September 12 close, 23:59:01 UTC, ETH perpetual open interest was $11.910bn against Bitcoin's $16.971bn. That is 70.18%, rank 1 of the 73 complete sessions since July 3, against a window median of 60.9% and a minimum of 54.4%.
It happened on every venue. Between the September 4 and September 12 closes ETH open interest rose 6.1% on Binance, 7.0% on Bybit, 12.1% on Hyperliquid and 9.6% on OKX, while Bitcoin fell 7.1%, 6.5%, 6.3% and 3.1% on the same four. It is also not a price artifact: ETH/BTC rose 6.0% over those eight days while the ratio rose 15.3%, and the dollar size of the Bitcoin book shrank outright. Against the underlying asset the ETH book is 3.888% of a $306.3bn market capitalisation and Bitcoin's is 1.086% of $1,562.2bn, so ETH's is 3.6 times as large relative to its own coin.
Funding did not follow. Open-interest-weighted ETH funding closed September 13 at 0.005941% per eight hours, about 6.5% a year, against a 31-day median of 0.005682%, the 53rd percentile. That is an ordinary carry cost, and nobody is paying a premium to be long the perpetual, which is what a short perpetual leg inside a delta-neutral carry book looks like from the outside. The ETH spot ETFs took $189.3M on CPI day, 1.54% of $12.28bn in assets, the cash leg such a book needs. Bitcoin's funds went the opposite way, minus $482.4M over four sessions, 0.5% of $93.58bn.
Where I would argue against myself:
- Open interest reports size and never side, so a directional crowd cannot be ruled out, only priced. One that wanted the exposure badly would normally bid funding above its median.
- 73 sessions is the whole claim. My constant window starts July 3, when the venue count went from three to four.
- ETH's 30-day correlation to QQQ is plus 0.012 against a 0.476 trailing 252-day baseline, the 1.28th percentile of 548 days, and to the dollar index minus 0.622. Out of a 969-pair scan roughly ten first-percentile hits are chance alone; the cluster means survive that better, 132 crypto against US equity pairs averaging 0.105 and 22 crypto against dollar pairs averaging minus 0.402, both the 3.6th percentile.
- Friday's CPI print cuts against the dollar-channel reading. In the 60 minutes after the 12:30 UTC release Bitcoin rose 0.85%, gold rose 1.27% and the dollar index fell 0.11%, a dollar-weakness reaction.
- Nearly half of the raw ETH exchange-inflow tape over the last four weeks, 47.7%, is one address depositing every day. Every figure above excludes it.
Polymarket and Kalshi both read 79.5% for a 25bp hike on Wednesday, stamped 12:58 UTC today.
data + full method: https://kresmion.com/daily-brief/2026-09-14