If you don't do this yourself, your brokerage will love your idle cash sitting around which they will use to invest and earn them, and not you, money. I do not hold much cash because inflation quickly eats into its value. I'd rather put that money to better use.
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If attempting to use SWVXX as a backing for Cash Secured Puts, see [[SWVXX and Cash Secured Puts|Finance/Investing/SWVXX and Cash Secured Puts]].
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## Rebalancing
Occasional portfolio rebalancing is necessary unless you are only invested in an automatic glide path fund. I just contribute funds to the deficient allocation category. If it requires a much higher amount than the funds available, utilizing leverage can get me to a balanced portfolio quicker.