SM, YG, Big Hit and JYP Entertainment are the top 4 Korean entertainment companies that are helping in spreading the hallyu wave around the world.

The top 4companies and the revenue generated by each company in 2018 is as follows.

1. SM Entertainment - $532 Million (605 bn won)

2. YG Entertainment - $248 Million (284 bn won)

3. Big Hit Entertainment - $196 Million ( 224 bn won)

4. JYP Entertainment - $109 Million (125 bn won)

SM Entertainment reigns supreme at the top with a total salesof$532 Million (605 bn won) in 2018, nearly doubling from previous year's revenue of $325 Million (377 bn won). SM's top contributors are EXO, TVXQ, Red Velvet and SHINee. 

YG Entertainment came in at #2, with Big Bang's enlistment YGE saw a dip in the revenue compared to last year and they lost their #1 position to SM. They still managed to hold the #2 spot thanks to the success of Blackpink, iKon, Winner and Seungri's solo activities. YGE is expected to grow a lot this year thanks to Blackpink's world tour, Big Bang's return plus iKon's and WInner's continued world tours. 

Big Hit like SM managed to double their sales revenue from last year thanks to the continued success of BTS. For the first time since it's inception Big Hit managed to make it to the top 3 Companies in 2018. 

Out of the top 4 companies JYP entertainment grew the least with $109 Million (125 bn won) in 2018 compared to last year when the company recorded total sales of $94 Million (102 bn won). GOT7 and Twice remains JYP's top contributors.

Average Annual Salary of Employees at top 4 companies

1. Big Hit - 42.77 m won ($ 37600)

2. YGE - 40.51 m won ($ 35400)
3. SME - 37.46 m won ( $ 33,400)

4. JYPE - 36.22 m won ( $ 31760)