On-chain Data: ETFs, Whales Absorb Bitcoin Supply

Glassnode data dated May 14, 2026 shows multiple on-chain indicators as Bitcoin trades above $81,000. The MVRV Z-Score stood close to 1, monitored exchange reserves were around 3.0 million BTC and U.S. spot Bitcoin ETFs held roughly 1.3 million BTC.

The MVRV Z-Score measures the gap between market value and realized value. Glassnode reports the metric peaked near 3.5 during the post‑halving run and is currently close to 1. Readings above 6 have historically coincided with prior cycle tops; past peaks reached about 10 in 2017 and about 7 in 2021. For the metric to match past top signals, it would need to rise back above roughly 3.5 and move toward 6, a pattern that has historically preceded multi‑month corrections.

Exchange reserves tracked by Glassnode topped above 3.3 million BTC in early 2022 and declined to about 3.0 million BTC by May 2026. During that period Bitcoin reached a peak near $126,000 in October 2025. The decline in monitored exchange balances occurred while price advanced and large wallet cohorts and custodial holdings increased their share of supply. A rise in exchange balances back above roughly 3.2 million BTC would indicate renewed distribution from holders into trading venues.

U.S. spot Bitcoin ETFs began trading in January 2024. Aggregate ETF holdings are about 1.3 million BTC, roughly 6.5% of circulating supply. The largest funds by holdings include BlackRock’s IBIT, Fidelity’s FBTC and Grayscale’s combined products. ETF accumulation continued through periods when price movement was muted, and aggregated inflows occasionally exceeded daily miner issuance, reducing the pool of immediately available coins for marginal buyers.

On‑chain retail signals remained subdued while institutional accumulation reached record levels during the post‑halving run. Concentration of supply in ETF custody and large wallets changes the composition of holders and means allocations and liquidity conditions can affect available float. Exchange balance metrics track BTC held on monitored centralized venues and serve as a proxy for exchange float; the MVRV Z‑Score compares market value to realized value to identify phases of accumulation and historical euphoria.