Alpenglow set for October 21: What it means for the Solana price

Published on 10/19/2026 at 09:21 | Editorial responsibility: Rafael Müller, Editor-in-Chief AD HOC NEWS

Solana ETFs lost 25.5 million USD through October 16. Solana price is 101.12 USD as of October 16, 2026, down 2.93 percent.

Upgrade timing and fund flows

On October 21, Solana's Alpenglow upgrade targets 150-millisecond finality.
Solana ETFs recorded 25.5 million USD in net outflows through October 16.
The Solana price stands at 101.12 USD as of October 16, 2026, 2.93 percent below the UTC daily close of October 15, 2026.
Validator participation will use a 0.8 SOL admission fee under the scheduled upgrade.

Solana, XCCRYPTOSOL6, Illustration mit AI erstellt.

Solana (SOL) has scheduled its Alpenglow consensus upgrade for October 21, with a target of 150-millisecond transaction finality. CoinDesk reported that the migration is planned for epoch 1064 at about 3:00 p.m. UTC. The Solana price is 101.12 USD as of October 16, 2026, down 2.93 percent compared with the UTC daily close of October 15, 2026.

Alpenglow targets 150 milliseconds on October 21

Alpenglow is designed to replace Solana's TowerBFT validator voting system with a process that lets validators exchange votes directly and combine approvals into certificates. The 150-millisecond figure is a target for transaction finality, the point at which a payment becomes irreversible, while actual performance will depend on network conditions, according to CoinDesk.

The migration changes how validator votes are recorded. Vote transactions will move off-chain, which could reduce reported transaction counts without showing a comparable change in user activity, according to BloomingBit. Validators must use software based on Agave 4.3.0 for the initial transition, while the current voting charge of about 1 SOL per epoch is replaced by a fixed 0.8 SOL admission fee.

Solana ETF outflows reach 25.5 million USD

U.S. spot Solana exchange-traded funds, which hold the cryptocurrency directly, recorded 25.5 million USD in net outflows across the five sessions through October 16, according to EconoTimes. The report said withdrawals occurred in all 10 sessions from October 5 through October 16, while October 2 was the only session with an inflow during that period.

A separate weekly analysis put October 5 through October 9 outflows at 24.8 million USD and identified 1.58 billion USD in cumulative net inflows, according to Solana Compass. The differing weekly totals reflect separate data sets and reporting periods.

SOL trades at 101.12 USD on October 16

The Solana price stands at 101.12 USD as of October 16, 2026, down 2.93 percent compared with the UTC daily close of October 15, 2026, according to Investing.com. The daily high is 104.71 USD and the daily low (UTC day) is 100.50 USD. Market capitalization is 59.45 billion USD, ranking Solana seventh, while 24-hour volume is 1.97 billion USD. Circulating supply is 589.44 million SOL.