Аннотация:The algorithms of electronic platforms (marketplaces) “raise” or “lower” the product card in search results depending on the price and sales volume of a particular product, the presence of ratings and reviews of the product, and other factors. In this regard, even a short-term absence of product balances immediately “lowers” the product card. Sometimes, it can move the product card from the first to subsequent catalog pages. The product becomes “invisible” to buyers. Numerous uncertainty factors significantly affect the process of delivering goods to warehouses of electronic platforms (marketplaces). For example, such factors include fluctuations in demand, the inclusion of a product in some promotion organized by a marketplace, etc. In this regard, it becomes rather difficult to solve the problem of optimizing the supply of goods to such large electronic platforms (marketplaces) as Wildberries, Ozon, and Yandex.Market using analytical methods involving the construction of a mathematical model that consider two or more factors of uncertainty. Using simulation modeling, it is possible to calculate the volume of deliveries of goods to the warehouses of the electronic platform (marketplace) so that the threat of loss of occupied positions of the product card will be minimized. As a result, the actualization of such threats as the threat of a decrease in sales volumes and revenue will be minimized.