Nosedive

desplome de precio

(a rapid fall in price or value)

desplome de valor

(a rapid fall in price or value)

salto m de cabeza

(a headfirst fall or jump)

desplomarse el precio

(to perform a rapid fall in price or value)

desplomarse el valor

(to perform a rapid fall in price or value)

sumergirse

(to dive down in a steep angle)