BIG companies  빅코 (big co.)

Korea has some big companies as it is, but the following are ones that have shareholds on other companies or own them. Like a lot (minus SM) Some may be out-of-date.
Also for the color-coding, I'll highlight a group even if it's just one member who was on something. Just for reference.

cj e&mproduces tv shows, groups, companies, food networks, etc.

Music & Live (cje&m's music side): Davichi, Emma Wu, Heize, Lee Hyori, Hong Daekwang, Kevin Oh, Natthew, Roy Kim,
MBK (former CCM): T-ara, T-ara N4, QBS, The SeeYa, DIA, Highbrow, Shannon Williams, Dani Kim
Maroo (under MBK): myB, BonusBaby, Kim Jongkook, KHAN, 1Lips/Ilips, Supernova, Ha Seokjin, Seo Eunchae
trainees: Kwon Hyub, Park Jihoon, Han Jongyeon,
FNC: AOA, AOA Black, AOA Cream, C.N Blue, FT Island, SF9, Honeyst, N.Flying, Hongki, InnoVator, Two Song Place, Jung Yonghwa
FNC actors: (may include later, there are too many)
FNC trainees: Alex Bell, Jang Jisun, Andy
Checkmate (FNC Chinese branch): Acemax BLK, Acemax RED, o21, Andy
YNB: Almeng, Noel, KNK, BESTie
B2M: Eric Nam, Nicole Jung, SPICA, Huh Youngsaeng
MMO: Park Boram, Wable
MMO trainees: Kang Daniel, Yoon Jisung, Kim Jaehwan, Choi Taewoong, Ju Jinwoo,
 

kakao mhome of iu (as most know it)(former loen)

(itself): IU, Fiestar, Sunny Hill, IBI, Kim Sukhoon, Jo Hansun, Shin Zisu, History, ULALA SESSION
trainees: Park Soyeon, Lee Sumin
Fave Ent: Zia, Ra.D, Yoon Hyunsang, Kim Eana, Shinsadong Tiger, Nano (나노)
Plan A: APink, Victon, Huh Gak
Starship: Boyfriend, Sistar, Cosmic Girls, UNIQ, Junggigo, Kim Jooyoung, Yoo Seungwoo, Monsta X, #Gun, Jung Sewoon
Starship trainees: Shim Chaeeun, Lee Kwanghyun, Boyfriend's Park Hyunjin,
Cre.Ker (former Viewga): Melody Day
Cre.Ker trainees: Ju Haknyeon,
WS: Ha Donggyun, Song Changui, Lisa, Kang Youngsuk, Lee Junghwa, Baek Z Young
Mun Hwa In 문화인: Seenroot, Long:D, Hanumpa, Youngman, Oohyo, Minchae, I.NA, Jaeney
King Kong (acting): Jo Yoonwoo, Ji Iljoo, Sandy, Jo Yoonhee, Kim Bum, Kim Jiwon, Lee Dongwook, Lee Kwangsoo, Lim Jueun, Park Heesoon, Park Minwoo, Yoo Yeonsuk, Yoon Jinyi
JJ Holic: NC.A, Kim Nayoung, Nam Youngjoo

imagine asia co., ltdformer yedang entertainment mainly; split w it.

Dream T: Girl's Day, , Jevice, MC Mong, I'M, Hong Sua, Ji Hyunwoo, Kim Minjoon
YMC: Ailee, Jessi, Lucky J, Joohee, IOI, Baechigi, Soulights, Sugar Bowl, Baek Chan, Shin Bora, Wanna One, Wheesung
DubleKick: Momoland
trainees:
Happy Face: Dal Shabet, MINX, DreamCatcher, Nam Hyungoon, Kim Woojung, V.O.S, Park Aeri, E-Tribe, 4Men, Vibe, MIIII, Nassun 낯썬, Ben,
trainees: Lee Soohyun, Hwang Suyeon, Kim Hongeun, Hwang Ahyoung, Kim Sihyun
> HF Music Company: Park Woodam, Woo Jinyoung, Jung Wonchul, Jo Yonggeun, Lee Sieun,

s.m.controversial, famous, sm station

SM (main minus labels for groups):
Super Junior, Girl's Generation, TTS, DBSK, SM the Ballad, NCT (all subs), EXO, Red Velvet, f(x), Krystal Jung, Jo Jinwoo, Henry Lau, Zhoumi
SM C&C: Choi Jinri / Sulli, Kang Yewon, Kim Suro, Kim Haneul, Jang Donggun, Hwang Shinhye, Moon Gayoung, Jung Somin, Song Jaerim, Yoon Sohee, Joon Hyunmoo, Kang Hodong, Kim Byungman, Ryu Dam, Shin Dongyeob, Lee Soogeun
trainees: SM Rookies,

edelweiss themes