Bitcoin logged a record weekly close near $106,500

Bitcoin ended the UTC trading week of May 18, 2025 near $106,500, the strongest weekly finish then recorded by widely followed dollar charts. Coinbase’s BTC-USD market closed its daily candle beginning at 00:00 UTC on May 18 at $106,473.46, giving the record a venue-specific primary-market observation rather than an unqualified global price.

The move mattered because it carried bitcoin back toward its January intraday high without yet entering new price discovery. It also put a firm closing milestone behind a rally that had kept the asset above $100,000 through the preceding week. A close is not more economically “real” than an intraday trade, but weekly closes are closely watched because they reduce the influence of brief spikes and align a full seven-day market window.

The Coinbase window

Coinbase’s 86,400-second BTC-USD candle for May 18 records an opening price of $103,162.53, a low of $103,130.95, a high of $106,692.97 and a close of $106,473.46. Coinbase reported 4,130.60889099 BTC of volume in that bucket.

Coinburn calculates a 3.21% open-to-close gain for the May 18 UTC session: ($106,473.46 / $103,162.53 − 1) × 100. Across the UTC week beginning May 12, the move was 2.24%, measured from Coinbase’s $104,137.58 opening price on May 12 to the May 18 close. Contemporaneous market reports placed the weekly finish at roughly $106,500, with small differences reflecting the chart provider, trading venue and timestamp.

That precision has limits. Bitcoin trades continuously across many exchanges and has no consolidated global closing auction. Coinbase’s documentation says its candles group the first, last, highest and lowest trades within a selected interval and warns that historical data can be incomplete where no ticks occur. The cited prices and volume therefore describe Coinbase BTC-USD, not every bitcoin market or a volume-weighted global benchmark.

Institutional demand was visible, but causation was not

The price milestone followed another positive week for U.S. spot bitcoin exchange-traded funds. Farside Investors’ issuer-level flow table, as summarized in contemporaneous May 18 reporting, showed an estimated $608.4 million of net inflows for the five U.S. trading sessions ending May 16. BlackRock’s IBIT accounted for $841.7 million of inflows, while outflows at several competing products reduced the group total.

Those figures offered institutional context for the rally, not proof that ETF activity caused the May 18 move. Fund-flow estimates measure creations and redemptions, not ETF share-trading volume, and they do not disclose the identity or motivation of end investors. Associated bitcoin transactions may also occur outside the UTC candle used here.

A difficult macro signal

The Sunday advance came two days after Moody’s Ratings downgraded the U.S. government’s long-term issuer and senior unsecured ratings from Aaa to Aa1 and changed the outlook to stable from negative. That was verified news available to the market before the May 18 close.

It would be speculative to label bitcoin’s rise a direct response. Some market participants view scarce digital assets as alternatives when sovereign-credit concerns rise; others treat bitcoin as a volatile risk asset vulnerable to higher yields and tighter financial conditions. U.S. Treasury cash trading was closed for the weekend, further limiting any same-window comparison.

What May 18 established

The defensible event-day conclusion is narrow: Coinbase recorded a $106,473.46 BTC-USD close for the May 18 UTC session, while contemporaneous sources identified the same approximately $106,500 level as bitcoin’s highest weekly close to that point. The milestone did not itself establish a new intraday all-time high, explain who bought, or prove which macro or institutional factor drove the move.