** Online supermarket Ocado's shares OCDO.L slide ~15% to 283.2 pence; on track to post worse day since Sept 2023 if trend holds
** Stock is the top loser on FTSE mid-caps .FTMC, which is down 0.9%
** Co slows roll-out of robotic warehouses for Kroger KR.N in Charlotte and Phoenix into 2026 year from 2025
** Posts pre-tax loss of 374.3 million pounds ($474.13 million) in the year to Dec. 1 2024, compared with loss of 387 million pounds in 2022-23
** "We do not anticipate meaningful changes to consensus estimates," JP Morgan analysts say
** Including session's losses, stock down ~6.5% YTD ($1 = 0.7895 pounds)
(Reporting by DhanushVignesh Babu in Bengaluru)
((DhanushVignesh.Babu@thomsonreuters.com;))