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

Published on 10/19/2026 at 19:06 | Editorial responsibility: Rafael Müller, Editor-in-Chief AD HOC NEWS

U.S. spot ETFs lost 24.8 million USD in the week ending October 9. The Solana price is 101.12 USD as of October 16, 2026, down 2.93 percent.

Network finality gets faster

The network is scheduled to activate Alpenglow on October 21, 2026, targeting 150-millisecond finality.
U.S. spot Solana ETFs recorded 25.5 million USD in outflows through October 16, 2026.
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.
Solana's October 8, 2026, changelog recorded a slot-time reduction from 250 milliseconds to 200 milliseconds.

Solana, XCCRYPTOSOL6, Illustration mit AI erstellt.

Solana (SOL) is scheduled to activate the Alpenglow upgrade on October 21, 2026, targeting 150-millisecond transaction finality, according to CoinDesk. 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.

Alpenglow targets 150 milliseconds on October 21

Alpenglow is designed to replace TowerBFT, Solana's current validator voting system, with a process that lets validators exchange votes directly and combine approvals into certificates. CoinDesk reported on October 14, 2026, that the upgrade is scheduled for epoch 1064, a period used to assign network responsibilities, and that the target is to reduce finality from 12.8 seconds to 150 milliseconds.

The change also alters how network activity is counted. Validator votes currently appear as transactions on the blockchain, while Alpenglow moves those votes off-chain. As a result, the headline transaction count could fall sharply on October 21, 2026, even if user payments and trading activity continue at the same pace, according to CoinDesk.

ETF outflows reached 25.5 million USD

U.S. spot Solana exchange-traded funds recorded 25.5 million USD in net outflows across the five sessions through October 16, 2026, according to EconoTimes, citing Farside Investors' daily flow table. The same report said the funds recorded withdrawals in all 10 sessions from October 5 through October 16, 2026.

Network performance has also changed independently of fund flows. Solana's official changelog dated October 8, 2026, lists an active feature gate reducing slot times from 250 milliseconds to 200 milliseconds, according to the Solana changelog. Alpenglow's 150-millisecond figure is a target, and CoinDesk said actual performance will depend on network conditions.

SOL price data for October 16, 2026

According to Investing.com, SOL trades at 101.12 USD as of October 16, 2026, down 2.93 percent compared with the UTC daily close of October 15, 2026. The daily high is 104.71 USD and the daily low 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.