The CoinDesk Bitcoin Price Index listed Bitcoin near $81,650 on October 18. The print sat roughly flat from the prior session’s close after a series of readings in the low $82,000s earlier in the week. Twenty-four-hour volume remained in the $6–15 billion range across major trackers.
MarketWatch showed a last update around $81,640 early on the 18th, with a day range between roughly $80,748 and $81,960. Circulating supply held near 20.10 million BTC. Fully diluted value stayed near $1.72 trillion on most aggregators.
The level continues the post-October 14 pullback from the mid-$83,000s. No large corporate accumulation announcement accompanied the latest print. ETF flow data for the current week remains the primary external figure traders are watching.
Key takeaways
- CoinDesk Bitcoin Price Index near $81,650 on October 18.
- Day range roughly $80,748–$81,960 on MarketWatch; volume consistent with recent averages.
- Prior closes clustered in the low $82,000s after the October 14 reading near $83,200 on some venues.
What the $81,650 CoinDesk reading shows
The index has now spent multiple sessions below the $82,500 area that held earlier in the month. The modest daily change is in line with weekend liquidity patterns. Background on the October 17 CoinDesk print at $81,480.53 appears in the prior note on this site.
Primary data comes from the CoinDesk Bitcoin Price Index and contemporaneous MarketWatch updates.
What to watch next
A close back above $82,000 would reverse the latest dip. Weekly ETF flow figures are the next clear external input. The next daily CoinDesk close will show whether the $81,500–$81,700 band holds into the new week.