The Bitcoin supply squeeze continued to gain traction as U.S. spot Bitcoin ETFs attracted $69.1 million in new institutional capital, according to CryptoSavingExpert. Exchange inflows remained near multi-year lows, reinforcing a market structure defined by institutional accumulation and subdued retail participation.

BlackRock's IBIT led daily ETF demand, while cumulative assets and total inflows expanded further across major fund issuers. Bitcoin traded near $65,600 during the latest observation period.

Spot ETF Demand Continues to Build

U.S. spot Bitcoin ETFs recorded another positive day, with daily net inflows of $69.10 million, equivalent to approximately 1,040 BTC. That single-day figure alone exceeds the roughly 450 BTC that miners produce daily following the April 2024 halving, which reduced per-block rewards from 6.25 to 3.125 BTC. Institutional demand persisted despite relatively modest single-day allocations.

Fund-level data showed BlackRock's IBIT once again leading inflows, adding 583.26 BTC during the reporting period. Fidelity's FBTC followed with 323.20 BTC in fresh purchases, while Bitwise's BITB contributed an additional 81.18 BTC. Grayscale's GBTC, by contrast, recorded an outflow of 575.75 BTC. Total positive inflows across funds comfortably exceeded that single fund's withdrawals.

Cumulative ETF demand remains substantial across the broader investment landscape. Total net inflows have reached $52.29 billion, representing approximately 648,820 BTC — a holding equal to roughly 3.3% of Bitcoin's approximately 19.7 million circulating supply. Assets under management expanded further to $80.92 billion, according to CoinGlass data. Since their SEC approval in January 2024, spot Bitcoin ETFs have rapidly become one of the largest institutional vehicles for direct Bitcoin exposure.

Exchange Activity Reinforces the Supply Narrative

Exchange inflow data provides another critical signal for the current market structure. Bitcoin deposits to exchanges remain significantly below earlier cycle peaks, suggesting limited immediate selling activity.

Earlier market phases produced repeated inflow spikes exceeding 100,000 BTC, typically accompanying elevated volatility and active repositioning. Today's environment reflects considerably calmer exchange activity. Recent exchange inflows measured approximately 2,300 BTC, among the lowest readings on record, as tracked by CryptoQuant.

Fewer coins are moving toward exchanges for potential liquidation. Lower exchange deposits frequently coincide with stronger long-term holding behavior, while institutional custody solutions continue absorbing meaningful portions of circulating supply. This trend gradually reduces the readily available market liquidity.

Institutional Accumulation Reshapes Market Structure

Spot Bitcoin ETFs require physical Bitcoin backing for newly issued fund shares, meaning fresh capital creates direct demand for the underlying asset rather than derivatives-based exposure. Institutional investors typically maintain longer investment horizons than speculative traders, and their allocations tend to remain inside regulated vehicles for extended periods, reducing the immediate circulation of newly acquired Bitcoin.

Retail participation remains comparatively restrained in the current environment. Previous bull cycles relied heavily on individual investor enthusiasm, whereas current demand appears increasingly driven by regulated financial institutions.

Daily ETF trading volume reached approximately $4.36 billion, reflecting continued investor engagement. Consecutive positive inflow sessions underscore steady institutional participation. The Bitcoin supply squeeze therefore remains closely linked to persistent ETF demand alongside subdued exchange inflows. Whether this pattern persists as post-halving supply reductions take fuller effect remains a key metric for market participants to monitor.