James Simons畢業於麻省理工,曾參加越戰,係密碼學專家,負責將對方密碼拆解。越戰結束後,佢喺麻省理工、其後哈佛大學出任教授,並發展出一套幾何定律叫Chern-Simons。1982年佢運用呢套幾何定律於金融市場,成立咗Renaissance Technologies對沖基金,搵出期市、外滙及股市中嘅inefficiencies;之後聘用咗三百位有數學博士學位嘅專業人士,喺1988年3月成立Medallion基金,過去每年平均回報率35.6%(同期標普五百升9.2%)。該基金收費好高:一、資產5%作為管理費。二、投資回報44%作為花紅。上述收入令其財富2008年達71億美元,《福布斯》雜誌認為佢係美國第四十一位富人。喺2008年咁惡劣嘅環境,Medallion基金仍升值58%,認真犀飛利。
佢主要利用電腦搵出股市嘅inefficiencies,然後加以利用作為賺錢。簡單D講,就係買入被忽略而股價偏低嘅股份,持有至該股重返合理或偏高水平便出售獲利。方法係:甲、該股P/E低於該股過去七年平均P/E。研究結果顯示,長線而言唔少股票P/E都可重返平均P/E水平。乙、購入明年可轉虧為盈嘅公司,但避免買入可能破產嘅公司。當然,Medallion基金真正操作起嚟複雜好多,但我地亦可運用上述兩大條件去搵備受忽略嘅二線股作炒賣。
Medallion 基金2008年仍升值58%
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