Founed in Melbourne, Australia in 1978, Computershare (ASX:CPU) has grown (largely through overseas acquisitions) to become the world's largest share registry business.. In brief, Computershare is a leading financial market services and technology provider managing over 14,000 corporate accounts totalling over 100 million shareholder accounts.. Basically, Computershare specializes in the corporate trust, stock transfer and employee share plan services for thousands of issuers and millions of securityholder accounts.