این مقاله به بررسی ارتباط میان نوع مالیکت بنگاه و رفتار تنوعبخشی فعالیت آن میپردازد. بدین منظور در این مقاله به بررسی رفتار تنوعبخشی شرکتهای دولتی، خصوصی و عمومی عضو سازمان بورس اوراق بهادار تهران پرداخته شده است. همچنین جهت تعیین نوع و میزان تنوعبخشی فعالیتهای بنگاهها از الگوی وارداراجان و راماجوام[1](1987) استفاده شده است. نتیجه بررسیهای انجامشده با استفاده از آزمونهای آماری کرامر، تاو گودمن و کراسکال و نیز آزمونهای آمار توصیفی نشان داد که رابطه معناداری بین نوع مالکیت بنگاه و نوع راهبرد تنوع آن وجود دارد. به گونهای که شرکتهای دولتی بالاترین سطح تنوعبخشی فعالیت را در میان سایر گروهها داشته و معمولاً از راهبرد تنوع بسیار زیاد استفاده میکنند. در میان این سه گروه، شرکتهای خصوصی کمترین سطح تنوع را داشته و معمولاً از راهبرد تنوع مرتبط استفاده مینمایند. علیرغم آنکه میزان تنوع شرکتهای عمومی اندکی بیشتر از شرکتهای خصوصی میباشد اما این شرکتها نیز سعی مینمایند تا بیشتر از راهبرد تنوع مرتبط استفاده نمایند.
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