Bitcoin spent the week of 19 to 24 October 2026 trading in the low $80,000 range, at one point coming close to $85,000 before falling back. The week's major developments came largely from banks, regulators, and blockchain networks: US Bitcoin exchange-traded funds swung between heavy inflows and outflows, BlackRock filed for a downside-protection Bitcoin fund, JPMorgan extended its deposit token to Ethereum, and HSBC rolled out a licensed Hong Kong dollar stablecoin for retail users. Solana completed a significant consensus upgrade while Ethereum delayed a testnet activation, and regulators in the United States and Ireland announced new stablecoin rules and a penalty for Coinbase.

Bitcoin ETF Flows Swing From Inflows to Outflows

US spot Bitcoin exchange-traded funds began the week with approximately $527 million in net inflows on Monday, 19 October. BlackRock's iShares Bitcoin Trust attracted roughly $665 million of that total, offsetting withdrawals from other funds.

Demand reversed sharply on Thursday, when the products collectively recorded about $636 million in outflows. The shift came as technology stocks and wider financial markets weakened, underscoring how quickly demand for the vehicles can move within a single week. Daily flow figures, published after each trading session, are closely watched as a gauge of institutional appetite for Bitcoin exposure since the products launched in January 2024.

BlackRock Files for Bitcoin Fund With Downside Protection

In a separate filing, BlackRock proposed the iShares Bitcoin Managed Protection ETF. The fund would use an options strategy tied to the asset manager's existing Bitcoin trust to cushion a portion of investor losses. BlackRock, the world's largest asset manager, already operates the biggest US spot Bitcoin ETF by assets, and the new proposal would need regulatory clearance before it could list.

Under the proposed structure, gains would be capped and the protection is not guaranteed. Investors would give up some potential upside in exchange for the downside cushion.

JPMorgan Brings JPM Coin to Ethereum

JPMorgan launched its dollar-denominated JPM Coin deposit token on Ethereum. The token was already available on Coinbase's Base network. Deposit tokens represent commercial-bank deposits moved onto blockchain rails, a structure JPMorgan has developed since first piloting JPM Coin in 2019.

Access remains limited to eligible institutional clients. According to the bank, the token is designed to support round-the-clock payments, collateral transfers, and the settlement of tokenised assets.

HSBC Launches RedCoin Stablecoin in Hong Kong

HSBC launched RedCoin on Friday, a Hong Kong dollar-backed stablecoin licensed by local regulators and aimed at retail users. Hong Kong activated its stablecoin licensing regime under the Hong Kong Monetary Authority in August 2025, the framework under which RedCoin received its licence.

The bank's PayMe platform, which has more than 3.3 million users, will gradually gain access to stablecoin transfers and payments accepted at more than 100,000 merchants.

US Regulator Finalises GENIUS Act Rules

The Office of the Comptroller of the Currency, the regulator overseeing US national banks, finalised rules to implement the GENIUS Act, the July 2025 law that created the first federal framework for payment stablecoins in the United States. The requirements cover stablecoin reserves, redemptions, oversight, and custody.

The framework takes effect on 18 January 2027 and retains restrictions on paying interest directly to stablecoin holders, giving banks and stablecoin issuers a fixed compliance deadline.

Solana Completes Alpenglow Upgrade

Solana completed its Alpenglow consensus upgrade on 21 October, replacing the validation system the network had operated since 2020.

Developer Anza says transaction finality drops from about 12.8 seconds to 150 milliseconds, though real-world performance will still depend on network conditions. Finality is the point at which a transaction becomes irreversible on a blockchain, a measure often used to compare network speed.

Ethereum Delays Glamsterdam Testnet Activation

Ethereum developers postponed the planned activation of Glamsterdam on the Hoodi testnet on 22 October, citing concerns about how new gas rules would interact with existing smart contracts. Hoodi is one of Ethereum's public testnets, where upcoming upgrades are rehearsed before reaching the main network.

The Ethereum Foundation said the delay affects testing only and not the live network. A new activation date has not been announced.

Central Bank of Ireland Fines Coinbase Ireland

The Central Bank of Ireland announced a €3.25 million penalty against Coinbase Ireland over past failures in safeguarding customer funds and in outsourcing controls. The Irish entity serves as Coinbase's European base and holds its licence under the EU's Markets in Crypto-Assets framework.

Coinbase said no customers lost funds. The regulator noted that the penalty still requires confirmation by the High Court.

Companies Object to Tokenised Share Trading Plan

More listed companies objected to a proposed trading platform for tokenised shares from OKX and Intercontinental Exchange. Tokenised shares are blockchain-based representations of listed equities, a format in which individual issuers can choose whether to participate. Reuters reported on 23 October that 22 businesses had opted out of the plan, with Microsoft and Alphabet among them.