Alpenglow targets 150 milliseconds on October 21, 2026: What it means for the Solana price

Published on 10/19/2026 at 13:18 | Editorial responsibility: Rafael Müller, Editor-in-Chief AD HOC NEWS

Validators need 0.8 SOL for the migration. The Solana price is 101.12 USD as of October 16, 2026, down 2.93 percent.

Faster settlement and fund flows

Solana targets 150 milliseconds of finality on October 21, 2026, when Alpenglow is scheduled for mainnet activation.
U.S. spot Solana ETFs recorded 12.7 million USD in net outflows on 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 recorded 1.88 million active addresses on October 9, 2026.

Solana, XCCRYPTOSOL6, Illustration mit AI erstellt.

Solana (SOL) is scheduled to activate its Alpenglow upgrade on October 21, 2026, with a target of 150-millisecond transaction finality. The change replaces the network's TowerBFT validator voting system, 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. The planned upgrade is a scheduled network event, while the price data is reported separately by Investing.com.

Alpenglow targets 150 milliseconds on October 21, 2026

Alpenglow changes how validators, the computers that verify transactions and secure the network, reach agreement. CoinDesk reported that the migration is planned for epoch 1064 and that validator operators must use software built on Agave 4.3.0. The new system moves validator votes off-chain and combines approvals into certificates. Its 150-millisecond target concerns finality, the point at which a transaction is treated as settled and no longer expected to be reversed.

The upgrade also changes how network activity is counted. CoinDesk reported that validator vote transactions will no longer appear in blocks, so Solana's headline transaction count could fall even if user trading and payment activity remains unchanged. The reported metric will therefore need to be read differently after October 21, 2026.

ETF withdrawals reached 12.7 million USD on October 16

U.S. spot Solana ETFs, funds that hold the cryptocurrency directly, recorded 12.7 million USD in net outflows on October 16, 2026, according to TokenPost. The report said the withdrawal extended the group-wide outflow streak to 10 consecutive sessions and was attributed entirely to Bitwise's BSOL.

Network activity offers a separate data point. Solana recorded 1.88 million unique active addresses on October 9, 2026, its highest level in 13 months, TokenPost reported. The ETF withdrawals and the active-address figure measure different parts of the market and are not directly comparable.

Solana trades at 101.12 USD with rank seven

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 (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.