# Earnings live updates: Plug Power stock jumps on improving margins, raised revenue guidance > Source: > Published: 2026-08-10 20:23:02+00:00 # Earnings live updates: Plug Power stock jumps on improving margins, raised revenue guidance The second quarter earnings season is beginning to wind down, with nearly 90% of S&P 500 ([^GSPC](https://finance.yahoo.com/quote/^GSPC/)) companies having already reported. The takeaway from the quarter so far has been unbridled strength. According to FactSet data, second quarter earnings for S&P 500 companies are on pace to [rise 50% year over year](https://finance.yahoo.com/markets/article/an-unprecedented-boom-corporate-profits-are-on-pace-for-fastest-growth-since-2021-152552912.html), the highest growth rate since 2021. Artificial intelligence has been [the growth engine](https://finance.yahoo.com/markets/article/corporate-earnings-soared-in-q2-with-ai-as-the-growth-engine-chart-of-the-day-173507179.html) of that broad-based earnings growth, Bank of America strategists noted. The next test comes this week from key players in different branches of the AI boom. Cloud provider CoreWeave ([CRWV](https://finance.yahoo.com/quote/CRWV/)), AI server maker Supermicro ([SMCI](https://finance.yahoo.com/quote/SMCI/)), and chip equipment manufacturer Applied Materials ([AMAT](https://finance.yahoo.com/quote/AMAT/)) are among the key companies reporting results this week.