Year Premiers
2008 Canberra Raiders
2009 Melbourne Storm
2010 Warriors
2011 Warriors
2012 Wests Tigers
2013 Penrith Panthers
2014 Warriors
2015 Penrith Panthers
2016 Sydney Roosters
2017 Manly Sea Eagles

Format
Under-20 (2008–2017)

Most Premierships
3 Warriors (2010, 2011, 2014)
2 Penrith Panthers (2013, 2015)
1 Manly Sea Eagles (2017)
1 Sydney Roosters (2016)
1 Wests Tigers (2012)
1 Melbourne Storm (2009)
1 Canberra Raiders (2008)

Most Consecutive
2 Warriors (2010 to 2011)