But the recent volatility in stock prices caused by the program trading has made [some market makers]-1 less willing *trace*-1 to soak up the stocks that are for sale.
Rel: [ soak] [ up]
Arg1: the stocks that are for sale
John soaked up the spilled milk with his linguistics homework.
Rel: soaked up
Arg1: the spilled milk
Arg2: with his linguistics homework