Masayoshi Son has a lot going on these days.

The SoftBank Group Corp. founder oversees the largest technology fund in history and is putting money into ride-hailing, e-commerce, digital payments, satellites, semiconductors, agriculture and cancer detection — just for starters.

How to make sense of it all? Son uses earnings briefings to explain his evolving vision. His comments from previous presentations indicate how his focus has changed, and what may lay ahead.