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According to reports, YG Entertainment's recent boost most likely comes from their recent expansion into the fashion industry. Back in September, YG launched its 'NONA9ON' brand in cooperation with Cheil Industries, the fashion affiliate of Samsung Group. During the same month, YG received an 18 billion won (approx. $16.4 million USD) investment from LVMH Group, a French multinational luxury goods conglomerate that houses brands like Louis Vuitton and Christian Dior. Due to the news, investors bought up a lot of shares and YG's stock value increased. Back in October, YG's market cap surpassed that of SM's for the very first time. Since then, SM's stock price has recovered and SM has taken back the lead in market cap.

Many are accrediting SM's stock price dropping in early Q4 to Luhan's recent departure from the company and Jessica's departure from Girls' Generation. 

Meanwhile, actor Bae Yong Joon comes in third place in terms of stock wealth with his 54.9 billion won (approx. $49.9 million USD) stake in Key East Entertainment. J.Y. Park, whose stock value has dropped by 9.1 percent, comes in fourth place with 23.3 billion won (approx. $21.2 million USD) in JYP Entertainment. 

It was also reported that actor Jang Dong Gun, who has shares in SM's subsidiary agency SM Culture & Content, saw a 17.7 percent increase in his stock value with 4.2 billion won (approx. $3.8 million USD). Meanwhile, TV personality Kang Ho Dong finished the year with 2.3 billion won (approx. $2.1 million USD).