import re

ExampleLine = "prices xom 91.43-91.44/vz50-50.01/s 7.23-7.24"
regex = re.findall(r"w{1,3}s?d{1,2}.?d{0,2}-d{1,2}.?d{0,2}", ExampleLine)
print(regex)

['xom 91.43-91.44', 'vz50-50.01', 's 7.23-7.24']