LONDON, June 26 (Reuters) - Lingotto Investment Management, a firm owned by the Exor NV holding company of Italy's Agnelli industrial dynasty, on Monday disclosed a 5% holding in Ocado, the British online supermarket and technology group.
Lingotto is chaired by former British finance minister George Osborne.
Exor was already a shareholder of Ocado, though the size of its previous stake is unclear.
Shares in Ocado closed up 32% on Thursday after The Times newspaper reported talk of bid interest from more than one U.S. suitor including Amazon, pondering the merits of an offer worth 800 pence ($10.21) per share, an 86% premium to Ocado's Wednesday closing price of 430 pence.
Ocado and Amazon have both declined to comment.
Shares in Ocado fell 5% on Friday and were down 2% in late afternoon trading Monday in the absence of any bid developments. (Reporting by James Davey; Editing by Susan Fenton)