Crypto ETF Market Sees $140.9B AUM as Bitcoin Flows Turn Negative

The crypto ETF market in cryptocurrencies ended the seven-day trading day on a high note and with heavy asset-to-asset capital flows. Information published by Phoenix Group as of 9 December 2025 week revealed a total AUM of $140,903,089,088,000 in mainly major Bitcoin and Ethereum exchange-traded products. 

The week ended with a Total Net Flow of -$19,210,000,000, with heavy withdrawals made in Bitcoin funds, and Ethereum had a positive flow. The divergent investor action underscores the current rotation in market segments, with volatility persisting.

Bitcoin ETFs Retain Dominant AUM at $122.9 Billion

Bitcoin exchange-traded funds were the biggest segment with an AUM of $122.9 billion, compared to Ethereum ETFs with $17.9 billion. The composite AUM focuses on the long-term role of Bitcoin as the institutional investment vehicle of digital assets. 

According to the chart of the week, the valuation was fairly stable between 30 November and 8 December, but trading reflected a pattern of changing inflow and outflow pressures. Bitcoin ETFs are still seen by institutional buyers as a long-term investment, though the week saw the highest outflow trend of BTC funds.

Total Net Flow Shows $54.7 Million Outflow from Bitcoin, $35.5 Million Inflow into Ethereum

A net flow of all products that closed at a loss amounted to -$19.21 million, with Bitcoin products registering the biggest loss of -$54.7 million. 

The trend of Ethereum ETFs showed the reverse situation, registering a +$35.5 million inflow, which indicates an increase of investor interest in ETH before the next network upgrades and ecosystem advancements. 

Other daily chart movements were positive and negative bars, with some trading days approaching the -$300 million range and others being near breakeven. Market activity indicates that there is reallocation stage instead of a wide market withdrawal.

Top Five Funds Led by iShares Bitcoin Trust with $68.9 Billion AUM

The market leader is still iShares Bitcoin Trust (IBIT), having an AUM of colossal $68.9 billion, market cap of $70.4 billion, and volume of $2.2 billion. The liquidity and the size of IBIT illustrate the supremacy of Bitcoin-based institutional products. 

The second greatest fund is iShares Ethereum Trust (ETHA) with AUM of $11.1 billion and market cap of $11.5 billion and volume of $827.1 million. The performance of the two iShares products demonstrates the way mainstream ETF issuers are still dominating the deepest market trading pools.

Broader Crypto ETF Market Supported by ProShares, Fidelity and Grayscale

Other leading issuers had a steady performance beyond iShares. ProShares Bitcoin ETF (BITO) recorded $2.7 billion AUM, a market cap of $1.4 billion and volume of $500.4 million. Fidelity Wise Origin Bitcoin Fund (FBTC) had an AUM of $21.3 billion, a market cap of $17.9 billion, and a volume of $307.1 million. 

Grayscale Bitcoin Trust ETF (GBTC) had registered AUM of $15.1 billion, which is equivalent to its market cap of $15.1 billion and volume of $282.3 million. This is an indication of high underlying activity in institutional-grade Bitcoin products, regardless of the overall negative weekly flow outcomes.

Market Sentiment Remains Active as AUM Holds Above $140 Billion

Even though weekly crypto flows showed careful positioning among investors, the total AUM at 140.9 billion reassures that institutional involvement is still high. The outcomes of the week indicate high rates of rotation in the sector. Bitcoin ETFs were subjected to liquidity withdrawal and Ethereum took in inflows. 

The high contrast indicates that there is increasingly high investor confidence in Ethereum-based future development, especially with regard to staking and network upgrades, but Bitcoin products are the long-term core exposure. 

The outlook of Phoenix Group indicates that it will remain strong in the crypto ETF market due to high volumes in trade and the high concentration of the top five funds.