Half-year report · HY

Period2025-04-01 → 2025-09-30
Filed2025-11-14
StandardIFRS
ConsolidatedYes
Data checks12 of 12 passed
Key figures · 47
MetricValuePeriodScopeSource row
Revenue¥284.5bn2025-04-01 → 2025-09-30Cons.Revenue IFRS
Revenue¥574.9bn2024-04-01 → 2025-03-31Cons.Revenue IFRS (5-year summary)
Revenue¥283.4bn2024-04-01 → 2024-09-30Cons.Revenue IFRS
Operating income¥18.5bn2025-04-01 → 2025-09-30Cons.Operating profit loss IFRS
Operating income¥18.3bn2024-04-01 → 2024-09-30Cons.Operating profit loss IFRS
Profit before tax¥19.6bn2025-04-01 → 2025-09-30Cons.Profit loss before tax IFRS
Profit before tax¥42.7bn2024-04-01 → 2025-03-31Cons.Profit loss before tax IFRS (5-year summary)
Profit before tax¥19.6bn2024-04-01 → 2024-09-30Cons.Profit loss before tax IFRS
Net income (owners)¥12.9bn2025-04-01 → 2025-09-30Cons.Profit loss attributable to owners of parent IFRS
Net income (owners)¥28.3bn2024-04-01 → 2025-03-31Cons.Profit loss attributable to owners of parent IFRS (5-year summary)
Net income (owners)¥12.2bn2024-04-01 → 2024-09-30Cons.Profit loss attributable to owners of parent IFRS
Net income¥14.0bn2025-04-01 → 2025-09-30Cons.Profit loss IFRS
Net income¥13.2bn2024-04-01 → 2024-09-30Cons.Profit loss IFRS
Total assets¥802.5bnat 2025-09-30Cons.Assets IFRS
Total assets¥783.0bnat 2025-03-31Cons.Assets IFRS
Total assets¥794.1bnat 2024-09-30Cons.Total assets IFRS (5-year summary)
Total liabilities¥324.6bnat 2025-09-30Cons.Liabilities IFRS
Total liabilities¥313.8bnat 2025-03-31Cons.Liabilities IFRS
Net assets / equity¥478.0bnat 2025-09-30Cons.Equity IFRS
Net assets / equity¥469.1bnat 2025-03-31Cons.Equity IFRS
Net assets / equity¥462.2bnat 2024-09-30Cons.Equity IFRS
Net assets / equity¥457.3bnat 2024-03-31vCons.Equity IFRS
Equity (owners)¥437.4bnat 2025-09-30Cons.Equity attributable to owners of parent IFRS
Equity (owners)¥429.3bnat 2025-03-31Cons.Equity attributable to owners of parent IFRS
Equity (owners)¥423.1bnat 2024-09-30Cons.Equity attributable to owners of parent IFRS (5-year summary)
Cash & equivalents¥59.1bnat 2025-09-30Cons.Cash and cash equivalents IFRS
Cash & equivalents¥61.2bnat 2025-03-31Cons.Cash and cash equivalents IFRS
Cash & equivalents¥59.3bnat 2024-09-30Cons.Cash and cash equivalents IFRS
Cash & equivalents¥46.0bnat 2024-03-31vCons.Cash and cash equivalents IFRS
Operating cash flow¥37.9bn2025-04-01 → 2025-09-30Cons.Net cash provided by used in operating activities IFRS
Operating cash flow¥53.5bn2024-04-01 → 2025-03-31Cons.Cash flows from used in operating activities IFRS (5-year summary)
Operating cash flow¥20.2bn2024-04-01 → 2024-09-30Cons.Net cash provided by used in operating activities IFRS
Investing cash flow−¥25.4bn2025-04-01 → 2025-09-30Cons.Net cash provided by used in investing activities IFRS
Investing cash flow−¥15.6bn2024-04-01 → 2025-03-31Cons.Cash flows from used in investing activities IFRS (5-year summary)
Investing cash flow−¥20.9bn2024-04-01 → 2024-09-30Cons.Net cash provided by used in investing activities IFRS
Financing cash flow−¥15.1bn2025-04-01 → 2025-09-30Cons.Net cash provided by used in financing activities IFRS
Financing cash flow−¥22.7bn2024-04-01 → 2025-03-31Cons.Cash flows from used in financing activities IFRS (5-year summary)
Financing cash flow¥14.5bn2024-04-01 → 2024-09-30Cons.Net cash provided by used in financing activities IFRS
EPS (basic)¥63.632025-04-01 → 2025-09-30Cons.Basic earnings loss per share IFRS
EPS (basic)¥134.572024-04-01 → 2025-03-31Cons.Basic earnings loss per share IFRS (5-year summary)
EPS (basic)¥57.012024-04-01 → 2024-09-30Cons.Basic earnings loss per share IFRS
EPS (diluted)¥63.612025-04-01 → 2025-09-30Cons.Diluted earnings loss per share IFRS
EPS (diluted)¥134.532024-04-01 → 2025-03-31Cons.Diluted earnings loss per share IFRS (5-year summary)
EPS (diluted)¥56.992024-04-01 → 2024-09-30Cons.Diluted earnings loss per share IFRS
Equity ratio54.5%at 2025-09-30Cons.Ratio of owners equity to gross assets IFRS (5-year summary)
Equity ratio54.8%at 2025-03-31Cons.Ratio of owners equity to gross assets IFRS (5-year summary)
Equity ratio53.3%at 2024-09-30Cons.Ratio of owners equity to gross assets IFRS (5-year summary)

Periods use the dates stated in the filing. d = earlier-year period dated by calendar; v = that date confirmed by the company's own earlier filing.

Segments · 54
SegmentItemPeriodValue
Reconciling Itemsreconcilingrevenue2025-04-01 → 2025-09-30−¥66.7bn
Reconciling Itemsreconcilingrevenue intersegment2025-04-01 → 2025-09-30−¥66.7bn
Reconciling Itemsreconcilingsegment profit2025-04-01 → 2025-09-30¥49m
Automobile Parts And Industrial Machine Partsreportable segmentrevenue2025-04-01 → 2025-09-30¥74.1bn
Automobile Parts And Industrial Machine Partsreportable segmentrevenue external2025-04-01 → 2025-09-30¥59.2bn
Automobile Parts And Industrial Machine Partsreportable segmentrevenue intersegment2025-04-01 → 2025-09-30¥14.9bn
Automobile Parts And Industrial Machine Partsreportable segmentsegment profit2025-04-01 → 2025-09-30¥3.6bn
Engineeringreportable segmentrevenue2025-04-01 → 2025-09-30¥14.6bn
Engineeringreportable segmentrevenue external2025-04-01 → 2025-09-30¥14.3bn
Engineeringreportable segmentrevenue intersegment2025-04-01 → 2025-09-30¥343m
Engineeringreportable segmentsegment profit2025-04-01 → 2025-09-30¥1.3bn
Functional Material And Magnetic Materialreportable segmentrevenue2025-04-01 → 2025-09-30¥105.0bn
Functional Material And Magnetic Materialreportable segmentrevenue external2025-04-01 → 2025-09-30¥96.8bn
Functional Material And Magnetic Materialreportable segmentrevenue intersegment2025-04-01 → 2025-09-30¥8.2bn
Functional Material And Magnetic Materialreportable segmentsegment profit2025-04-01 → 2025-09-30¥6.3bn
Logistics And Servicereportable segmentrevenue2025-04-01 → 2025-09-30¥24.6bn
Logistics And Servicereportable segmentrevenue external2025-04-01 → 2025-09-30¥14.3bn
Logistics And Servicereportable segmentrevenue intersegment2025-04-01 → 2025-09-30¥10.3bn
Logistics And Servicereportable segmentsegment profit2025-04-01 → 2025-09-30¥1.8bn
Specialty Steelreportable segmentrevenue2025-04-01 → 2025-09-30¥133.0bn
Specialty Steelreportable segmentrevenue external2025-04-01 → 2025-09-30¥100.0bn
Specialty Steelreportable segmentrevenue intersegment2025-04-01 → 2025-09-30¥33.0bn
Specialty Steelreportable segmentsegment profit2025-04-01 → 2025-09-30¥5.4bn
Total Of Reportable Segments And Otherssegment totalrevenue2025-04-01 → 2025-09-30¥351.2bn
Total Of Reportable Segments And Otherssegment totalrevenue external2025-04-01 → 2025-09-30¥284.5bn
Total Of Reportable Segments And Otherssegment totalrevenue intersegment2025-04-01 → 2025-09-30¥66.7bn
Total Of Reportable Segments And Otherssegment totalsegment profit2025-04-01 → 2025-09-30¥18.4bn
Reconciling Itemsreconcilingrevenue2024-04-01 → 2024-09-30−¥72.6bn
Reconciling Itemsreconcilingrevenue intersegment2024-04-01 → 2024-09-30−¥72.6bn
Reconciling Itemsreconcilingsegment profit2024-04-01 → 2024-09-30−¥2m
Automobile Parts And Industrial Machine Partsreportable segmentrevenue2024-04-01 → 2024-09-30¥71.2bn
Automobile Parts And Industrial Machine Partsreportable segmentrevenue external2024-04-01 → 2024-09-30¥53.7bn
Automobile Parts And Industrial Machine Partsreportable segmentrevenue intersegment2024-04-01 → 2024-09-30¥17.4bn
Automobile Parts And Industrial Machine Partsreportable segmentsegment profit2024-04-01 → 2024-09-30¥4.8bn
Engineeringreportable segmentrevenue2024-04-01 → 2024-09-30¥10.9bn
Engineeringreportable segmentrevenue external2024-04-01 → 2024-09-30¥10.6bn
Engineeringreportable segmentrevenue intersegment2024-04-01 → 2024-09-30¥332m
Engineeringreportable segmentsegment profit2024-04-01 → 2024-09-30¥809m
Functional Material And Magnetic Materialreportable segmentrevenue2024-04-01 → 2024-09-30¥109.4bn
Functional Material And Magnetic Materialreportable segmentrevenue external2024-04-01 → 2024-09-30¥100.1bn
Functional Material And Magnetic Materialreportable segmentrevenue intersegment2024-04-01 → 2024-09-30¥9.3bn
Functional Material And Magnetic Materialreportable segmentsegment profit2024-04-01 → 2024-09-30¥5.1bn
Logistics And Servicereportable segmentrevenue2024-04-01 → 2024-09-30¥23.1bn
Logistics And Servicereportable segmentrevenue external2024-04-01 → 2024-09-30¥13.5bn
Logistics And Servicereportable segmentrevenue intersegment2024-04-01 → 2024-09-30¥9.6bn
Logistics And Servicereportable segmentsegment profit2024-04-01 → 2024-09-30¥1.4bn
Specialty Steelreportable segmentrevenue2024-04-01 → 2024-09-30¥141.4bn
Specialty Steelreportable segmentrevenue external2024-04-01 → 2024-09-30¥105.5bn
Specialty Steelreportable segmentrevenue intersegment2024-04-01 → 2024-09-30¥35.9bn
Specialty Steelreportable segmentsegment profit2024-04-01 → 2024-09-30¥6.1bn
Total Of Reportable Segments And Otherssegment totalrevenue2024-04-01 → 2024-09-30¥356.0bn
Total Of Reportable Segments And Otherssegment totalrevenue external2024-04-01 → 2024-09-30¥283.4bn
Total Of Reportable Segments And Otherssegment totalrevenue intersegment2024-04-01 → 2024-09-30¥72.6bn
Total Of Reportable Segments And Otherssegment totalsegment profit2024-04-01 → 2024-09-30¥18.3bn

Segment names come from EDINET member IDs; not yet mapped to a common taxonomy.

All source rows · 827
ItemContextValueUnit
Operating profit loss IFRSInterimDuration_jpcrp040300-ssr_E01239-000SpecialtySteelReportableSegmentMember5424000000JPY
Operating profit loss IFRSInterimDuration_jpcrp040300-ssr_E01239-000FunctionalMaterialAndMagneticMaterialReportableSegmentMember6316000000JPY
Operating profit loss IFRSInterimDuration_jpcrp040300-ssr_E01239-000AutomobilePartsAndIndustrialMachinePartsReportableSegmentMember3601000000JPY
Operating profit loss IFRSInterimDuration_jpcrp040300-ssr_E01239-000EngineeringReportableSegmentMember1275000000JPY
Operating profit loss IFRSInterimDuration_jpcrp040300-ssr_E01239-000LogisticsAndServiceReportableSegmentMember1796000000JPY
Operating profit loss IFRSInterimDuration_TotalOfReportableSegmentsAndOthersMember18414000000JPY
Operating profit loss IFRSInterimDuration_ReconcilingItemsMember49000000JPY
Operating profit loss IFRSInterimDuration18464000000JPY
Document title cover pageFilingDateInstant
Original text (Japanese)半期報告書
Clause of stipulation cover pageFilingDateInstant
Original text (Japanese)金融商品取引法第24条の5第1項の表の第1号
Place of filing cover pageFilingDateInstant
Original text (Japanese)関東財務局長
Filing date cover pageFilingDateInstant2025-11-14
Semi annual accounting period cover pageFilingDateInstant
Original text (Japanese)第102期中(自 2025年4月1日 至 2025年9月30日)
Company name cover pageFilingDateInstant
Original text (Japanese)大同特殊鋼株式会社
Company name in english cover pageFilingDateInstantDaido Steel Co., Ltd.
Title and name of representative cover pageFilingDateInstant
Original text (Japanese)代表取締役社長  清水 哲也
Address of registered headquarter cover pageFilingDateInstant
Original text (Japanese)名古屋市東区東桜一丁目1番10号
Telephone number address of registered headquarter cover pageFilingDateInstant052(963)7523
Name of contact person address of registered headquarter cover pageFilingDateInstant
Original text (Japanese)経理部長  清水 享
Nearest place of contact cover pageFilingDateInstant
Original text (Japanese)東京都港区港南一丁目6番35号 東京本社
Telephone number nearest place of contact cover pageFilingDateInstant03(5495)1253
Name of contact person nearest place of contact cover pageFilingDateInstant
Original text (Japanese)東京総務室長  丸山 直希
Place for public inspection cover page (text)FilingDateInstantText · Plus
Edinet codeFilingDateInstantE01239
Fund codeFilingDateInstant-
Security codeFilingDateInstant54710
Filer name in japaneseFilingDateInstant
Original text (Japanese)大同特殊鋼株式会社
Filer name in englishFilingDateInstantDaido Steel Co., Ltd.
Fund name in japaneseFilingDateInstant-
Fund name in englishFilingDateInstant-
Cabinet office ordinanceFilingDateInstant
Original text (Japanese)企業内容等の開示に関する内閣府令
Document typeFilingDateInstant
Original text (Japanese)第四号の三様式
Accounting standardsFilingDateInstantIFRS
Whether consolidated financial statements are preparedFilingDateInstanttrue
Industry code when consolidated financial statements are prepared in accordance with industry specific regulationsFilingDateInstantCTE
Industry code when financial statements are prepared in accordance with industry specific regulationsFilingDateInstant-
Current fiscal year start dateFilingDateInstant2025-04-01
Current period end dateFilingDateInstant2025-09-30
Type of current periodFilingDateInstantHY
Current fiscal year end dateFilingDateInstant2026-03-31
Previous fiscal year start dateFilingDateInstant2024-04-01
Comparative period end dateFilingDateInstant2024-09-30
Previous fiscal year end dateFilingDateInstant2025-03-31
Next fiscal year start dateFilingDateInstant-
End date of quarterly or semi annual period of next fiscal yearFilingDateInstant-
Amendment flagFilingDateInstantfalse
Identification of document subject to amendmentFilingDateInstant-
Report amendment flagFilingDateInstantfalse
Xbrl amendment flagFilingDateInstantfalse
Business results of group (text)FilingDateInstantText · Plus

Every row of the EDINET CSV. Item names are the XBRL element names; filed text is kept in its original Japanese. Filed text is available on Plus and Pro.

Data checks · 12 of 12 passed
balance sheet identityconsolidated 2025-03-31pass
balance sheet identityconsolidated 2025-09-30pass rounding
dei present pass
period resolution pass
statement vs summary · net income attributable to parentconsolidated 2024-04-01/2024-09-30pass
statement vs summary · net income attributable to parentconsolidated 2025-04-01/2025-09-30pass
statement vs summary · operating cash flowconsolidated 2024-04-01/2024-09-30pass
statement vs summary · operating cash flowconsolidated 2025-04-01/2025-09-30pass
statement vs summary · revenueconsolidated 2024-04-01/2024-09-30pass
statement vs summary · revenueconsolidated 2025-04-01/2025-09-30pass
statement vs summary · total assetsconsolidated 2025-03-31pass
statement vs summary · total assetsconsolidated 2025-09-30pass