BlackRock Files for Protected Bitcoin ETF, Following Calamos Into Downside-Limited Funds
BlackRock has filed with regulators to launch a bitcoin exchange-traded fund designed to limit losses for investors, according to CoinDesk. The New York-based asset manager's move follows a similar path already taken by Calamos, whose protected bitcoin funds have operated since early 2025 and have withstood a reported 50% drop in bitcoin's price without exposing investors to that full decline.
BlackRock's filing does not specify how much downside protection the proposed fund would offer, nor how much of bitcoin's price gains investors would be able to capture. Those details, which are central to how a protected fund actually behaves for an investor, have not yet been made public.
Calamos, which got to this type of product first, offers investors a choice among three structures: one that aims for full downside protection and two others that cap potential losses at either 10% or 20% over a defined period. To make that possible, Calamos puts about 90% of each fund's assets into U.S. Treasuries, using the remaining portion to buy bitcoin-linked options. That combination lets investors participate in bitcoin's price increases up to a set ceiling, while the Treasury holdings and options structure are meant to absorb losses beyond the stated threshold during the coverage period.
The approach has drawn interest even as some investors have pulled money out of bitcoin more broadly. Matt Kaufman, Calamos' head of ETFs, said in May that the firm's protected bitcoin funds had taken in between $10 million and $15 million over several weeks, a stretch during which spot bitcoin ETFs overall were seeing money flow out rather than in.
BlackRock, for its part, has already been experimenting with bitcoin products that go beyond simply tracking the cryptocurrency's price. In June, the firm launched its Bitcoin Premium Income Fund, trading under the ticker BITA. That fund holds a mix of actual bitcoin and shares of BlackRock's existing iShares Bitcoin Trust, known as IBIT, while also selling call options on roughly 25% to 35% of the portfolio. The goal is to generate monthly income for investors from the options premiums, while still keeping a large position tied to bitcoin's value.
Jay Jacobs, BlackRock's U.S. head of equity ETFs, described the thinking behind that fund when it launched. He told CoinDesk at the time that there are investors across a wide range of risk appetites who are looking for some amount of income while still keeping a mostly large, mostly long position in bitcoin.
Who this affects
These developments are most relevant to people who already hold or are considering bitcoin exposure through exchange-traded funds, rather than those buying the cryptocurrency directly. Investors who have been uneasy about bitcoin's volatility, but who do not want to exit the asset entirely, are the audience these protected and income-generating structures appear to target. That includes retirement savers, financial advisors managing client portfolios, and anyone weighing whether a defined-outcome product fits alongside more traditional holdings.
It also matters for people simply trying to understand the broader menu of crypto-linked investment products now available through mainstream brokerage accounts. The rise of protected funds and income funds marks a shift from the earlier period when spot bitcoin ETFs, which simply track the coin's price up or down, were the primary option. As a personal finance writer who focuses on explaining money, insurance and benefits news in plain terms, I think it is worth noting that these structures come with tradeoffs, including caps on potential gains and reliance on options strategies that are more complex than a simple price-tracking fund.
Because BlackRock's filing is still pending and lacks specifics on its protection levels and upside limits, there is no way yet to compare it directly to Calamos' existing products. Details are likely to emerge as the filing moves through the regulatory process.
Anyone considering bitcoin-related ETFs, whether protected, income-generating, or standard spot funds, may want to review the specific terms, fees and risks of each product carefully. Speaking with a licensed financial professional about how any of these options might fit individual circumstances, risk tolerance and goals is a reasonable step before making decisions.
Some investors now weigh protected bitcoin ETFs alongside traditional holdings such as bitcoin gold reserves, seeking crypto exposure while limiting the potential for steep losses.
Each new filing shows how Wall Street is packaging blockchain technology bitcoin etf products with built-in downside protection to attract cautious investors.
Source: CoinDesk
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