Ethereum seems to be in the very first stages of what could turn out to be a very systemic accumulation phase. And any such phase tends to lead to significant price increases over time. In the last week or so, we’ve seen Ethereum whale wallets, institutional investment vehicles, and even long-term holders returning to the kind of aggressive buying behavior we have not seen in years. Demand for Ethereum has surged to levels only previously seen during the 2017 bull run. And the way in which demand has been returning is quite striking. Soaring spot ETF inflows (the Grayscale one has been way over-hyped), all-time highs in staking, and an increasing balance of long-term holders seem to be leading us into a new phase of on-chain consolidation and investor confidence. Record Inflows Into Spot Ethereum ETFs Ethereum spot ETFs in the US are now quickly becoming a market force. Just last week, net inflows into these funds amounted to 195,320 ETH—the third-largest weekly net inflow on record. Indeed, institutional demand for spot Ethereum is showing up as the kind of serious money that pays real attention to something. And for the moment, what’s capturing that attention is the fact that these ETFs are only recently having been set free to operate after a long regulatory wait. Last week saw 195.32K $ETH flow into US Spot #ETH ETFs – the third-largest weekly net inflow on record. pic.twitter.com/MtTCPqWH8G — glassnode (@glassnode) June 16, 2025 Institutional and retail investors alike now hardly ever miss out on the opportunity to add Ethereum to their investment portfolios—most likely for reasons related to the consensus that Ethereum will continue to serve as a blockchain banking infrastructure for the manifestation of a wide range of decentralized applications (dApps). Here are 10 reasons to consider adding Ethereum to your investment portfolio. These inflows also help take liquid ETH out of circulation, adding to the supply constraints that could push prices upward in the near term. ETFs have been all the rage lately, especially among wealth management platforms and retirement account custodians. If this trend continues, it could take ETH out of circulation even faster. Whales Push Accumulation to 7-Year Highs ETFs are drawing institutional investment, while on-chain data show Ethereum’s biggest holders are stacking again—like nothing we’ve seen in years. For that past week, these large wallets consistently added more than 800,000 ETH to their holdings every day, and a most significant spike saw them add over 871,000 ETH in just one day on June 12. That amount alone counts as the biggest single day add we’ve recorded to these whale wallets in 2025, and on a scale of such adds, the biggest since 2017. Wallets containing between 1,000 and 10,000 ETH have now collectively exceeded 14.3 million ETH. This increasing concentration among whale wallets could be a sign of long-term positioning. Whales, as a rule, are better informed than most and are also less likely to panic sell. So it could be reasoned that the accumulation of Ethereum in whale wallets is something bullish. For nearly a week, daily whale accumulation has exceeded 800K #ETH , pushing holdings in 1k–10k wallets to >14.3M #ETH . On June 12 alone, #Ethereum whales have added over 871K $ETH – the highest daily net inflow YTD. This scale of buying hasn't been seen since 2017. pic.twitter.com/zCMj9HX6Ft — glassnode (@glassnode) June 17, 2025 This degree of steady accumulation usually mirrors anticipated future rises in price or faith in Ethereum’s ever-growing part within the blockchain setup, especially as it steadily advances as the leading smart contract platform and Layer 1 settlement layer. Ethereum Staking and Long-Term Holder Metrics Hit New Highs Besides activity from ETFs and whales, Ethereum is also notching up fresh all-time highs in core metrics that point to a solid foundation for ongoing growth. Ethereum staking has now hit an all-time high, with more than 35 million ETH locked in the network’s proof-of-stake mechanism. Staking is a much less risky, much more suitable way for individuals and institutions to earn crypto yield than, say, lending their crypto to a centralized exchange and risking margin calls or total collapse. REPORT: #Ethereum surpasses 35 million #ETH staked, a new high. pic.twitter.com/aI710ConFr — CoinEcho (@mycoinecho) June 17, 2025 Also significant is the increase in accumulation addresses—wallets that have never sold. Those addresses now hold a total of 22.8 million ETH, also an all-time high. This group of holders seems to include some of the strongest hands in the market, often associated with long-term conviction and low propensity to react to volatility. An increasing proportion of ETH is now effectively unavailable to the market, whether it’s been staked, is tied up in ETFs, or is simply being held in long-term addresses that show no signs of making the Ethereum they control available. That leaves the supply of liquid Ethereum shrinking precipitously, at the same time that the demand for it appears to be coming from multiple, generally well-heeled classes of investors. Ethereum is developing into a core component of the decentralized finance ecosystem. These metrics may be hinting at another major cycle, but this time with much deeper backing from institutions, much more security through staking, and a base of committed holders that is more robust than ever. Disclosure: This is not trading or investment advice. 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