经济学
美元成本平均法
按购入证券的美元价格平均计算法
The strategy works well inside 401(k)s and other retirement plans because of dollar cost averaging (DCA).
FORBES: Make The Most Out Of Your 401(k) Contributions Right Now
Brokerage commissions can also whack total return in strategies that involve frequent trading, such as dollar cost averaging.
FORBES: Better Bonding
Fifth, use dollar cost averaging to smooth out the day to day volatility.
FORBES: Making Volatility Work For You
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