Tech

Solana will activate its Alpenglow network upgrade on October 21, 2026, in step with Epoch 1064. The upgrade targets cutting transaction finality from about 12.8 seconds to roughly 150 milliseconds, after governance proposal SIMD-0326 passed with 98.27% support. Under the new mechanism, a block finalizes immediately in the first round when at least 80% of stake backs it, while support between 60% and 80% sends it to a second round decided by a 60% threshold. Validators must meet new software requirements and pay a 0.8 SOL admission fee, a change intended to sharpen the network's performance and efficiency.

Solana mainnet has activated a 200-millisecond slot target, halving the previous 400-millisecond timing and raising block-production opportunities to five per second. The change also shortens a network epoch to roughly 24 hours from about 48 hours. It marks the final step in a four-stage rollout, implemented by Anza via the Agave validator client through the SIMD-0525 upgrade.

Ethereum’s Sepolia testnet is set to gradually raise its block gas limit from 60M toward a 200 million target as part of the network’s Layer 1 scaling push. Prysm 7.2.0 and Teku 26.9.1 support the Glamsterdam upgrade, but validators must manually change settings for the new preference to take effect, so the realized limit will rise block by block rather than jump instantly. Ethereum’s block gas limit previously increased from 30M starting in February 2025 to 45M, and later moved to a 60M default after Fusaka client releases.

AXT (AXTI) fell 12.39% to close at $58.63 on August 28, 2026, as profit-taking spread through optics and indium-phosphide names. Read the daily analysis of AXT Inc's optics-cycle outlook, momentum risk and key technical levels.

IONQ fell 7.68% to $39.20 in the August 28, 2026 regular session as quantum-computing pure plays faced renewed valuation-sensitive selling. Read the daily analysis of IonQ's sector de-risking outlook, momentum risk and key technical levels.

IREN fell 12.53% to USD 35.45 on August 28, 2026, after investors weighed a quarterly revenue miss and a large reported loss tied to its mining exit. Read the daily analysis of IREN Limited's earnings-reset outlook, momentum risk and key technical levels.

Arm Holdings (ARM) fell 6.33% to $239.05 in the August 28, 2026 regular session as technology and chip risk appetite weakened amid an elevated-yield backdrop. Read the daily analysis of Arm Holdings plc's sector-risk outlook, momentum risk and key technical levels.

NVIDIA (NVDA) fell 4.57% to $217.55 on Aug 28, 2026, as strong results met an elevated bar and renewed AI financing concerns pressured semiconductor risk appetite. Read the daily analysis of NVIDIA Corp's post-earnings outlook, momentum risk and key technical levels.

Lumentum (LITE) fell 6.39% to close at $895.00 on August 28, 2026, as investors de-risked AI-optics exposure amid a broader peer selloff. Read the daily analysis of Lumentum's optics-sector outlook, momentum risk and key technical levels.