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Applied Optoelectronics Inc (AAOI) saw its stock rise by 5.2% to $121.57, yet GuruFocus's GF Value indicates it is significantly overvalued at 380.1% above its intrinsic value of $25.32. The company holds a GF Score of 62/100, reflecting good growth and momentum but poor profitability and valuation. Insider selling of $124.5 million with no buying, combined with gurus trimming holdings, suggests caution for potential investors.