Apple’s YTY market share jumped over 100% for desktop PCs and notebooks. In the medium business segment (100-999 employees), Apple’s desktop PC market share soared from 13% to 27%, while notebook PC shares grew from 8% to 18% in the medium business segment (100-999 employees). Similarly, in the small business (1 to 99 employees) market, Apple grew its desktop PC market share from 7% to 12%, and expanded its share of the notebook PC market from 5% to 8%, AMI Partners says.