# Weekly data brief · 7 days to 2026-10-18

BTC -1.6% over the last 7 days. US buyers were above the global price on 0 of 7 days. $2.4B in forced liquidations recorded this week.

Source: https://bykaranteli.com/brief/weekly · attribute to ByKaranteli and quote the timestamp.
Snapshot taken 2026-10-18.

Rolling 7-day window over ByKaranteli's own recorded data. Refreshed every 30 minutes.

## The week in one look

Price and volatility over the rolling 7-day window.

- BTC -1.6% over 7 days
- BTC implied volatility (DVOL): 36.9 a week ago, 37.9 now

## Liquidity & stress

The week in our own liquidity readings: US-vs-global pricing and the PsiCharge state machine.

- Coinbase Premium positive on 0 of 7 days · week average -0.127%
- Current streak: 43 straight days of US bids below global price
- Turkey Premium Index above the world price on 0 of 8 days · week average -14.4 bps
- PsiCharge ends the week in SUPERPOSITION (score 92) · 2 alarms fired this week

## Order flow

How many days the BTC order flow crossed our recorded danger line.

- BTC order-flow toxicity (VPIN) closed above its 90-day danger line on 2 of 7 days
- Leverage over the week: LTC open interest -2.3%, with 0 of 10 tracked majors adding open interest
- Solana perps: $228.3M one-sided open interest across 6 venues, -5.9% on the week

## Options week

What the tape actually paid for across the week.

- Week taker premium: $28.9M into calls vs $30.2M into puts
- Largest print of the week: sell BTC-27NOV26-90000-C · $571663 premium

## Liquidations

Forced liquidations aggregated over the finalized days of the week.

- $1.8B longs vs $602.2M shorts wiped over the last 7 recorded days
- 12 cascade events this week, largest $350.3M
- Exchange insurance funds on 10 venues: $7.6B, -0.46% over 8 days
- SuperChart: the week's largest liquidation print was $12.0M on Binance (BTC)

## ETF flows

US spot ETF net flows summed over the week's finalized trading days.

- BTC ETFs lost $228.6M over 5 trading days
- ETH ETFs lost $320.0M over 5 trading days

## Positioning & calendar

Official US futures positioning and what is on the docket.

- CFTC week of 2026-10-13: hedge funds net -5,844 BTC futures contracts (+1,008 WoW)
- FOMC statement · October 27-28, 2026 in 10 days

## New listings

New perpetual listings detected across the six exchanges we scan hourly.

- 33 new listings this week: DNAUSDT, GSUSDT, JPMUSDT, MCDUSDT

## BYK Data Layer

Every five minutes the records in the Data Layer catalog are hashed into one Merkle root, signed and written to Solana. Anyone can check them from the chains alone.

- 2012 of 2016 five-minute windows sealed and written to Solana · median 53 s to the block · 7 late anchors


## Related

- https://bykaranteli.com/brief
- https://bykaranteli.com/charge
- https://bykaranteli.com/premium
- https://bykaranteli.com/flow
- https://bykaranteli.com/options

Everything in one fetch: https://bykaranteli.com/llms-full.txt