If you buy even one share in a company, you can proudly call yourself a shareholder As a shareholder you get an invitation to the company's annual meeting, and you have the right to vote on the members of the Board of Directors and other company matters
Any holder of one or more shares in a corporation A shareholder usually has evidence that they are a shareholder; this evidence is represented by a stock certificate
[ 'shar, 'sher ] (noun.) before 12th century. Middle English schare, from Old English scear; akin to Old High German scaro plowshare, Old English scieran to cut; more at SHEAR.