10 Worst-Performing Stocks of 2025

Core Viewpoint - The stock market is expected to achieve another double-digit percentage gain in 2025, with the S&P 500 index showing a year-to-date gain of 16.81% as of December 5, despite significant declines in several individual stocks [1]. Group 1: Worst-Performing Stocks - Fiserv (FISV) has seen a decline of approximately 70%, attributed to a drastic cut in its full-year revenue forecast and slowing growth in its merchant-services segment [3]. - The Trade Desk (TTD) is down approximately 67%, facing decreased revenues due to competition from major players like Amazon, leading investors to view the stock as overvalued [4]. - Deckers Outdoor (DECK) has dropped around 57%, with slowing growth expectations and pressure on discretionary consumer spending impacting its well-known brands, UGG and Hoka [5]. - Gartner (IT) is down approximately 52%, with its valuation at $17 billion, facing cyclical pressure as companies reduce spending on advisory services during economic uncertainty [6].