Wintor- If you check the FINRA website DOLV was
Post# of 40989
If you check the FINRA website DOLV was posted for the public to see on the 24th of Oct. They hit the website 1 day prior to when the symbol will change. Company may have been alerted on the 20th but publicly it went live on the 24th
http://otce.finra.org/DLSymbolNameChanges