Bill Gates

Microsoft co-founder Bill Gates holds an estimated $107 billion as of mid-2026, with his wealth anchored in a diversified portfolio managed by Cascade Investment LLC spanning Caterpillar, Canadian National Rail, and Four Seasons Hotels rather than Microsoft stock alone. Gates has donated over $60 billion to the Bill and Melinda Gates Foundation, which has helped save millions of lives through polio eradication, malaria prevention, and global vaccine access programs in sub-Saharan Africa and South Asia. His philanthropic efforts have outpaced most billionaires, with Gates giving away a far higher share of his fortune than the typical philanthropist.