V2EX price-weighted index

Price-Weighted Index

定义 Definition

价格加权指数:一种股票指数的计算方法,按成分股的股价来分配权重股价越高的股票,对指数涨跌影响越大。它通常以成分股价格之和(再配合“除数 divisor”)来计算,因此不直接按公司规模(市值)来决定权重。典型例子是道琼斯工业平均指数(DJIA)

发音 Pronunciation (IPA)

/pras wetd n.deks/

例句 Examples

The Dow is a price-weighted index.
道琼斯指数是一种价格加权指数。

Because a price-weighted index gives more influence to higher-priced stocks, its divisor must be adjusted after stock splits to keep the index level consistent.
由于价格加权指数让高股价股票影响更大,发生股票拆分后必须调整指数除数,以保持指数点位的可比性与连续性。

词源 Etymology

该术语由 price(价格)+ weighted(加权的)+ index(指数)构成,字面意思就是“按价格加权的指数”。这种方法在现代指数体系早期较常见,尤其与19世纪末起逐步成型的道琼斯平均数传统相关;后来随着投资组合理论与指数基金发展,市值加权等方法更普及,但价格加权仍作为重要的历史与实践类型保留至今。

相关词 Related Words

文学与经典作品 Literary Works

  • A Random Walk Down Wall Street(Burton G. Malkiel) 讨论主要股票指数与其编制方法时会涉及道琼斯等价格加权指数的特点与局限。
  • The Intelligent Investor(Benjamin Graham) 在谈及市场指数与投资参考基准时,常以道琼斯等传统指数为背景语境。
  • Investments(Bodie, Kane, Marcus) 金融学教材中在“指数构建/权重方案”章节通常会系统介绍价格加权、市值加权、等权重等方法。
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