Valuation Metrics - GF Value is used for valuation, including price to GF Value, which is essential for back testing [1] - Back testing can be performed by ranking based on price to GF Value [1] Back Testing Analysis - Back testing functionality is supported, allowing users to add parameters [2][3] - Limiting the back testing to SP500 companies yields more sensible results [2] - A random GF Value back testing over the last three years (from 2022 to current) shows potential market outperformance [2]

Investment Opportunities & Valuation - GuruFocus suggests utilizing its features to identify promising investment opportunities [1] - The platform allows users to monitor insider buy-to-sell ratio trends, potentially signaling market bottoms [1] - GuruFocus provides valuation tools, including GF Score, GF Value, DCF (Discounted Cash Flow), and reverse DCF analysis [1] - Valuation correlations can be analyzed using GuruFocus's tools [1] GuruFocus Features & Tools - GF Value is a key metric offered by GuruFocus for stock valuation [1] - DCF valuation methods are available for assessing investment opportunities [1] - Backtesting capabilities are present within the GuruFocus platform [1] - Portfolio optimization tools are offered to GuruFocus members [1]

Market Valuation and Trends - The market valuation is near its highest point, only 2-3% down from its peak [1] - The Buffet Indicator, which is the ratio of total market cap over GDP, is at its highest point ever, indicating significant overvaluation [1] - Shiller PE ratio is also at its highest level, suggesting the market is expensive and future returns may be low [1] GuruFocus Platform Updates - GuruFocus has released new features for screeners, including technical-related filters like 20-day EMA (Exponential Moving Average) and SMA (Simple Moving Average) [2] - Users can create custom filters for fundamental data and filter stocks based on historical data, such as revenue growth from 2022 year-over-year [2] - A new valuation tab has been added for every stock, showing valuation and correlation analysis between price and various parameters like revenue, book value, earnings, and cash flow [4] - GuruFocus has released brokerage account integration for premium members, allowing users to upload their brokerage account and analyze their portfolios using GuruFocus tools [5] Stock Analysis and Commentary - Alphabet's stock is down 8% due to not very good earnings [1] - Apple's revenue in China is declining, indicating a loss of competitive edge [3][4] - Dollar General's stock has declined almost 60% since 2022 due to competition from cheap online retailers, and its operating margin has decreased from 10% to less than 6% [4] - PDD's P/S ratio is 89, with a P/E ratio of more than 500, indicating extremely high market expectations [5] - Mesa Air Group is not a good investment because the airline business has generally been losing money [7] - Novo Nordisk's stock has come down almost 41% from its peak, presenting an interesting opportunity [7]