Amazon's business partnership with luxury retailer Saks Global has hit a sour note. The e-commerce giant invested $475 million of preferred equity in Saks Global — the owner of department stores Saks Fifth Avenue, Neiman Marcus, and Bergdorf Goodman — in December 2024.Now, Amazon says its stake is "presumptively worthless," and it has asked a federal judge to reject the retailer's bankruptcy financing plans, which it says will further diminish its chances of recovery. "That equity investment is now presum ...