The sub - principle level is composed of many factors , which affect yield rate and risk , such as policies , interest rate , market and enterprises . finally , different fund portfolio forms the program level of the structure . it can also be regarded as a pyramid structure , with yield rate and risk value on the top , which is supported by many factors and different investment portfolio 開放式基金的價(jià)值在確定的時(shí)間和投資額下,取決于收益率及風(fēng)險(xiǎn)因素,這是基金預(yù)定目標(biāo)的基本準(zhǔn)則層,影響收益率和風(fēng)險(xiǎn)的諸多因素,如政策、利率、市場(chǎng)及企業(yè)等,構(gòu)成了遞階層次結(jié)構(gòu)的子準(zhǔn)則層,最后,不同的基金組合構(gòu)成這個(gè)結(jié)構(gòu)的方案層,也可以把它看成一個(gè)金字塔型的結(jié)構(gòu),塔頂是收益率和風(fēng)險(xiǎn)值,支撐塔頂?shù)氖侵T多因素和不同的投資組合,本文將順著這個(gè)塔型,對(duì)相關(guān)因素予以自上而下的梳理和分析解剖。