Simplify the following text for a Grade 13 native English-speaking person.
Original: The story said that , â One reason SMAs may be outperforming mutual funds is that individual SMA strategies tend to have smaller amounts of assets than popular mutual funds , allowing them to trade more nimbly .
Simplified: The Wall Street Journal reported that Separately Managed Accounts may beat popular mutual funds because SMAs â â tend to have smaller amounts of assets than popular mutual funds , allowing them to trade more nimbly . ''