Sony will on Thursday lay out the growth strategy for its financial arm set for a spin-off that has been welcomed by investors as marking the latest chapter in the company's transformation. The Japanese conglomerate, once best known for household electronics, has received plaudits for shifting its focus to entertainment, which totals more than 60% of sales. The financial spin-off reflects the tangled path Sony has taken, coming just four years after it took full control of the business in a $3.7 billion deal.