SUMCO（3436）

Issuer Code Long Term Short Term
SUMCO 3436 A/Stable J-1

News ReleaseMore

Jan. 15, 2026
JCR Affirmed A/Stable and J-1 on SUMCO
Dec. 06, 2024
JCR Affirmed A/Stable and J-1 on SUMCO
Oct. 31, 2023
JCR Affirmed A/Stable and J-1 on SUMCO
Nov. 16, 2022
JCR Upgraded Long-term Issuer Rating on SUMCO to A/Stable; Affirmed J-1 on CPMember Only
Oct. 27, 2021
JCR Affirmed A- and J-1 on SUMCO; Revised Outlook from Stable to PositiveMember Only
Nov. 24, 2020
JCR Affirmed A-/Stable and J-1 on SUMCOMember Only
Nov. 05, 2019
JCR Affirmed A-/Stable and J-1 on SUMCOMember Only
Oct. 31, 2018
JCR Affirmed A-/Stable and J-1 on SUMCOMember Only
Oct. 23, 2017
JCR Upgraded Rating on SUMCO from BBB+/Positive to A-/Stable and from J-2 to J-1Member Only
Dec. 06, 2016
JCR Affirmed BBB+/Positive and J-2 on SUMCOMember Only

Issuer ReportsMore

Oct. 31, 2018

SUMCO

Issuer Reports
Oct. 23, 2017

SUMCO

Issuer Reports
Dec. 08, 2016

SUMCO

Issuer Reports

ESG Credit OutlookMore

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