Meta Platforms Inc.'s shares rose 1% in early premarket trading on Friday, following sharp gains the previous day after the company released its Muse Spark 1.1 AI model geared toward coding tasks. Shares are up more than 8.3% over the four days through Thursday, on course for their best weekly gain since mid-April. Meta's chief AI officer, Alexandr Wang, said the model stands out for strong tool use, a million-token context window, parallel subagents, and advanced capabilities in computer use. Wang also confirmed that additional Muse Spark iterations would be launched in the future. A new report said Meta plans to begin production of its data center chip, code-named "Iris," in September. META was the top trending ticker on Stocktwits during premarket hours, with sentiment shifting to 'extremely bullish' from 'bullish' the previous day, and 24-hour message volume surging over 210%. META dropped 14.5% in the first six months of 2026 before rebounding in July, and shares are now down 4.2% for the year.