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Bitcoin ETFs were supposed to change everything when they launched in the United States. For a while, they did. Then the flows went quiet. Now, in the space of a single week, something has shifted again, and the reasons behind the rebound are more complicated than a simple return of bullish sentiment.
Bloomberg ETF analyst Eric Balchunas reported on Saturday that US spot Bitcoin ETFs attracted roughly $1 billion in net inflows for the week, their strongest performance since April and their third-best weekly result since last October. That October period, which Balchunas described as Bitcoin’s “silent IPO,” marked the early phase of intense institutional accumulation through the newly approved funds.
What the “Silent IPO” Theory Actually Predicted
The phrase “silent IPO” was popularised by investor Jordi Visser in November to describe a structural shift in who holds Bitcoin. The theory holds that early Bitcoin adopters were selling their holdings into rising demand from ETFs and institutional buyers, creating enough sell-side supply to keep Bitcoin’s price relatively subdued even as significant new capital entered the market. In other words, the ETFs were absorbing coins, but the coins were coming from existing holders rather than being created, so the net price effect was muted.
That distribution dynamic coincided with a visible cooling in ETF inflows compared with the initial frenzy following the funds’ approval. Weekly figures became inconsistent, with outflow weeks interrupting what had initially looked like a steady institutional march into Bitcoin. This week’s $1 billion rebound therefore stands out not just for its size but for what it suggests about the pace of that earlier distribution phase potentially slowing or ending.
A Hardware Wallet Hack Enters the Picture
Alongside the flow data, a significant security incident has drawn attention to one of the oldest debates in crypto: whether ordinary investors are actually equipped to hold Bitcoin themselves.
Coldcard, a hardware wallet developed by Coinkite and widely regarded as one of the more security-conscious options for Bitcoin self-custody, was at the centre of an exploit that resulted in approximately $116 million worth of Bitcoin being stolen. The vulnerability was traced to a flaw in how affected devices generated wallet keys, with attackers able to compromise funds held in wallets created using vulnerable firmware versions.
Balchunas raised the possibility on Friday that the Coldcard incident may have contributed to the ETF inflow surge, noting the timing as a potential though unproven connection. He was careful to acknowledge that correlation does not imply causation, but added that “long-term I can’t imagine there aren’t some who migrate over,” referring to investors who might reconsider self-custody after seeing a trusted hardware wallet compromised at scale.
The logic is straightforward even if the causal link remains speculative. Self-custody requires users to correctly generate and store wallet keys, manage firmware updates, and protect physical devices. When a product as well-regarded as Coldcard proves vulnerable, it raises questions that go beyond that specific device. For investors who were already uncertain about the technical demands of holding their own Bitcoin, an ETF held through a regulated brokerage begins to look like a simpler and arguably safer arrangement, even if it introduces a different category of counterparty risk.
Why This Matters Beyond the Weekly Number
A single strong week does not confirm a trend, and the ETF inflow data has been volatile enough over the past several months to caution against reading too much into any one data point. But the combination of factors here is worth examining carefully.
The return to $1 billion in weekly inflows suggests that at minimum, the distribution pressure Visser described may be easing. If early holders have largely sold into ETF demand, the remaining supply overhang shrinks, and new inflows have a more direct effect on price. That is the scenario Bitcoin bulls have been waiting for since the ETFs launched.
The Coldcard incident adds a separate and less discussed dimension. The growth of Bitcoin ETFs has always depended partly on the argument that institutional custody, regulated and insured, is more reliable than asking retail investors to become their own banks. Every high-profile self-custody failure, whether through exchange collapses, phishing attacks, or now firmware vulnerabilities in hardware wallets, reinforces that argument for a segment of the market.
For investors in Malaysia and Singapore, where retail access to US-listed spot Bitcoin ETFs remains indirect and where local regulators including the Securities Commission Malaysia and the Monetary Authority of Singapore have taken cautious approaches to crypto product approvals, the broader trend still matters. It shapes the global institutional narrative around Bitcoin as an asset class, which in turn influences how regional regulators and fund managers think about eventual local product structures.
The week’s inflows alone do not settle the question of whether Bitcoin ETFs are entering a new phase of sustained demand or simply bouncing from a soft patch. But the convergence of recovering institutional appetite and a high-profile reminder of self-custody’s risks suggests the structural case for ETFs as the dominant vehicle for mainstream Bitcoin exposure is, if anything, getting stronger rather than weaker.
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