import re
txt = "(NASDaq/abnjnxd:number1) ojsnxsjsxmjosx (nasDaq:number2) (NYSE:bhdnd) (Nasdaq:eres)"
x = re.findall("\(((?:NASDAQ|NYSE)[^()\s]*)\)", txt, re.I)
print(x)
aW1wb3J0IHJlCgp0eHQgPSAiKE5BU0RhcS9hYm5qbnhkOm51bWJlcjEpIG9qc254c2pzeG1qb3N4IChuYXNEYXE6bnVtYmVyMikgKE5ZU0U6YmhkbmQpIChOYXNkYXE6ZXJlcykiCgp4ID0gcmUuZmluZGFsbCgiXCgoKD86TkFTREFRfE5ZU0UpW14oKVxzXSopXCkiLCB0eHQsIHJlLkkpCgpwcmludCh4KQ==