Oil & Coal Products · Fiscal year end Mar 31

Idemitsu Kosan Co.,Ltd.

5019

出光興産株式会社

FIGI BBG000BD7F985019.T5019 JPCorp. no. 9010001011318

Latest half-year results

First half · fiscal year to 2026-03 · filed 2025-11-12

For the first half of the fiscal year to 2026-03: Revenue ¥3.81 trillion (-15.5% YoY), Ordinary income ¥35.3 billion (-71.8% YoY), Net income ¥36.1 billion (-63.7% YoY).

	This period	Year on year
Revenue	¥3.8tn	-15.5%
Ordinary profit	¥35.3bn	-71.8%
Net profit to owners	¥36.1bn	-63.7%

From the securities report on EDINET, which states no forecast. History via /v1/companies/5019/earnings-releases.

Financials

Japan GAAP · consolidated · fiscal year to 2026-03-31

Revenue: ¥8.1tn
Net income: ¥171.9bn
ROE: 9.4%
Equity ratio: 36.0%
Dividend / share: ¥36
Employees: 14,392

Revenue · ¥tn

Net income · ¥bn

Fiscal year	Revenue	Net income	Total assets	Net assets	ROE	EPS	Operating CF
2026-03-31	¥8,105.9bn	¥171.9bn	¥5,328.8bn	¥1,951.1bn	9.4%	¥140.38	¥392.4bn
2025-03-31	¥9,190.2bn	¥104.1bn	¥4,775.6bn	¥1,737.7bn	5.9%	¥77.83	¥476.7bn
2024-03-31	¥8,719.2bn	¥228.5bn	¥5,012.3bn	¥1,812.5bn	13.4%	¥161.32	¥377.4bn
2023-03-31	¥9,456.3bn	¥253.6bn	¥4,865.4bn	¥1,629.3bn	16.8%	¥170.67	−¥32.8bn
2022-03-31	¥6,686.8bn	¥279.5bn	¥4,601.2bn	¥1,436.5bn	21.8%	¥188.03	¥146.1bn

Indicators

Computed by us from filings · fiscal year to 2026-03-31

Metric	Value	Percentile among listed companies
ROE, %	9.4	55.3
Ordinary margin	0.0283	22.8
Equity ratio, %	36	21.5
Revenue growth	-0.118	5.3
Net income growth	0.6521	79.3
Operating cash flow / assets	0.0736	57

Policy-uncertainty measure3.04 Share of the report's text discussing policy-related uncertainty, by policy area. Proprietary text method.

Trade & tariffs 1 Fiscal & tax 2 Regulation 3 Politics & geopolitics 7

Ownership activity 0 filer(s) stated they may make proposals in 365 days; 2 new 5% holder(s) in 180 days; net stake change −7.76pt in 90 days; 1.2% held by other listed companies.

Results wording balance: -0.20. Proprietary text method; it describes the wording only and does not interpret context.

Interest example: if all ¥1.4tn of reported debt repriced by 50 basis points, a year's interest would rise by ¥6.8bn, 1.7% of operating cash flow. Our arithmetic only, not a forecast: fixed-rate debt and hedges are ignored.

Via /v1/companies/5019/indicators. Descriptive figures, not a rating and not investment advice.

From other filings

As the company states them

Bond ratings stated in filings: R&I A+ (2025-11-21, 第17回無担保社債). One bond's rating on that date, as the company stated it; it may have changed. The agencies' opinions, not ours. /v1/companies/5019/credit-ratings

Share buyback, report to —: ¥30.0bn acquired. /v1/companies/5019/buybacks

Internal control, 2026-06-17: see filing 上記の評価の結果、当事業年度末日時点において、当社の財務報告に係る内部統制は有効であると判断しました。 Filing

Segments, votes and tender offers

Stated in EDINET filings

Segments: Petroleum, Functional Materials, Resources, Basic Chemicals, Power and Renewable Energy, Other. /v1/companies/5019/segments

Latest voting result: 2026-06-24 · 取締役13名選任の件 · passed. /v1/companies/5019/voting

Ownership changes

All companies →

2026-10-08

Below 5%−9.45pt

Aramco Overseas Company B.V. cut holdings in Idemitsu Kosan Co.,Ltd. (5019) to 0.00% from 9.45%, below the 5% threshold.

S100XZUMFiler profile Original filing (PDF, Japanese)
2026-10-08

New 5% stake

Aramco Downstream Asia Pte. Ltd. disclosed a 9.45% stake in Idemitsu Kosan Co.,Ltd. (5019), crossing the 5% reporting threshold.

S100Y713Filer profile Original filing (PDF, Japanese)
2026-10-08

Increase+1.69pt

Aramco Overseas Company B.V. raised holdings in Idemitsu Kosan Co.,Ltd. (5019) to 9.45% from 7.76%.

S100Z6YQFiler profile Original filing (PDF, Japanese)
2026-08-06

Below 5%−1.00pt

Nomura Securities Co.,Ltd. cut holdings in Idemitsu Kosan Co.,Ltd. (5019) to 4.47% from 5.47%, below the 5% threshold.

S100YU85Filer profile Original filing (PDF, Japanese)
2026-06-09

Amendment0.00pt

Nissho Kosan Co., LTD. filed a correction to a 5% report on Idemitsu Kosan Co.,Ltd. (5019).

S100Y9ICFiler profile Original filing (PDF, Japanese)
2026-06-09

Increase+1.15pt

Nissho Kosan Co., LTD. raised holdings in Idemitsu Kosan Co.,Ltd. (5019) to 15.30% from 14.15%.

S100Y9IKFiler profile Original filing (PDF, Japanese)
2026-05-28

New 5% stake

Nissho Kosan Co., LTD. disclosed a 9.35% stake in Idemitsu Kosan Co.,Ltd. (5019), crossing the 5% reporting threshold.

S100Y5X4Filer profile Original filing (PDF, Japanese)
2025-12-25

Increase+1.06pt

Nissho Kosan Co., LTD. raised holdings in Idemitsu Kosan Co.,Ltd. (5019) to 14.15% from 13.09%.

S100W6JHFiler profile Original filing (PDF, Japanese)
2025-12-25

Amendment0.00pt

Nissho Kosan Co., LTD. filed a correction to a 5% report on Idemitsu Kosan Co.,Ltd. (5019).

S100XCZBFiler profile Original filing (PDF, Japanese)
2025-12-25

Amendment0.00pt

Nissho Kosan Co., LTD. filed a correction to a 5% report on Idemitsu Kosan Co.,Ltd. (5019).

S100XCZSFiler profile Original filing (PDF, Japanese)

Trades by 5% holders

From the 60-day trade tables in 5% reports

Bought SoldHover a dot for the trade

Holder	Period	Net shares	Net % of shares	Avg. filed price	Range
Aramco Overseas Company B.V.	2026-10-01 – 2026-10-01	-115,579,000	−9.45pt	—	—
Aramco Downstream Asia Pte. Ltd.	2026-10-01 – 2026-10-01	+115,579,000	+9.45pt	¥1,653.04	¥1,653–1,653
日章興産株式会社	2025-12-15 – 2025-12-15	-18,072,890	−1.40pt	¥1,002	¥1,002–1,002
株式会社善	2025-12-15 – 2025-12-15	+8,487,269	+0.66pt	¥1,002	¥1,002–1,002
株式会社縁	2025-12-15 – 2025-12-15	+9,585,621	+0.74pt	¥1,002	¥1,002–1,002
公益財団法人出光美術館	2021-04-01 – 2024-01-01	+101,962,000	+7.38pt	—	—

Net shares and the average are our calculations. Prices are filed prices as stated by the filer, mostly for off-market trades; they are not market prices. Stock lending, custody transfers and option exercises are excluded from net shares. Every row via /v1/companies/5019/trades.

5% filings

Large shareholding reports on 5019

Filed	Filer	Stake	Change	Stated purpose
2026-10-08	Aramco Downstream Asia Pte. Ltd.	9.45%	—	pure investment
2026-10-08	Aramco Overseas Company B.V.	0.00%	−9.45pt	management participation
2026-10-08	Aramco Overseas Company B.V.	9.45%	+1.69pt	management participation
2026-08-06	Nomura Securities Co.,Ltd.	4.47%	−1.00pt	—
2026-06-09	Nissho Kosan Co., LTD.	9.35%	—	—
2026-06-09	Nissho Kosan Co., LTD.	15.30%	+1.15pt	—
2026-05-28	Nissho Kosan Co., LTD.	9.35%	—	—
2026-01-08	Nissho Kosan Co., LTD.	14.15%	0.00pt	—
2025-12-25	Nissho Kosan Co., LTD.	14.15%	+1.06pt	—
2025-12-25	Nissho Kosan Co., LTD.	14.15%	0.00pt	—

Cross-shareholdings

From the annual report's status of shareholdings

Listed strategic holdings: 7 issues
Book value: ¥7.1bn
Sold in the year: ¥3.0bn 5 issues
Bought in the year: — — issues
Mutual, both reports: 5
Held by listed cos.: 30

Holds	Book value	Shares vs. prior year	Mutual
Mitsubishi UFJ Financial Group, Inc. 8306	¥4,830m	-50.0%	no
Sumitomo Mitsui Trust Group, Inc. 8309	¥3,583m	-50.0%	both reports
SHINANEN HOLDINGS CO., LTD. 8132	¥2,577m	-12.5%	both reports
ANA HOLDINGSINC. 9202	¥1,512m	0.0%	both reports
Sumitomo Mitsui Financial Group, Inc. 8316	¥1,404m	-50.0%	no
TOSOH CORPORATION 4042	¥1,337m	0.0%	both reports
AIR WATER INC. 4088	¥1,274m	0.0%	both reports
ExaWizards Inc. 4259	¥198m	0.0%	no
Hiroshima Electric Railway Co.,Ltd. 9033	¥175m	-24.3%	no
TTCL PUBLIC COMPANY LIMITED	¥22m	0.0%	no

Held by: Tokio Marine Holdings, Inc. 8766, ANA HOLDINGSINC. 9202, ZEON CORPORATION 4205, TOSOH CORPORATION 4042, The Chiba Bank, Ltd. 8331, The Yokohama Rubber Company,Limited 5101, IINO KAIUN KAISHA, LTD. 9119, NS UNITED KAIUN KAISHA, LTD. 9110, AIR WATER INC. 4088, The Gunma Bank, Ltd. 8334, North Pacific Bank,Ltd. 8524, The San-in Godo Bank,Ltd. 8381 and 18 more

Purposes, all holdings and mutual flags via /v1/companies/5019/cross-holdings. Share changes include stock splits.

Major shareholders

As of fiscal year end 2026-03-31

Shareholder	Shares	Ratio
日本マスタートラスト信託銀行株式会社（信託口）	148,938,400	12.19%
Aramco Overseas Company B.V.	115,579,000	9.46%
日章興産株式会社	109,520,390	8.97%
公益財団法人出光美術館	101,962,000	8.35%
株式会社日本カストディ銀行（信託口）	72,561,000	5.94%
正和興産株式会社	24,872,000	2.04%
出光興産社員持株会	23,944,430	1.96%
株式会社善	17,807,169	1.46%
株式会社縁	17,591,841	1.44%
STATE STREET BANK AND TRUST COMPANY 505001	16,854,124	1.38%

U.S. funds holding 5019

SEC Form N-PORT, reports to 2026-07-31

228 U.S. funds held 104,675,484 shares worth $847.3m.

Fund	Shares	Value	% of fund	As of
VANGUARD TOTAL INTERNATIONAL STOCK INDEX FUND VANGUARD STAR FUNDS	11,269,790	$92.3m	0.014%	2026-07-31
VANGUARD DEVELOPED MARKETS INDEX FUND VANGUARD TAX-MANAGED FUNDS	7,394,525	$54.6m	0.017%	2026-06-30
iShares Core MSCI EAFE ETF iShares Trust	5,615,940	$46.0m	0.024%	2026-07-31
Dimensional International Value ETF Dimensional ETF Trust	3,839,600	$31.6m	0.148%	2026-07-31
Schwab Fundamental International Equity ETF SCHWAB STRATEGIC TRUST	3,322,776	$29.2m	0.119%	2026-05-31

Up to 25 funds per stock via the API.

Get this as JSON

GET /v1/companies/5019
GET /v1/companies/5019/financials
GET /v1/companies/5019/details
GET /v1/companies/5019/segments
GET /v1/companies/5019/voting
GET /v1/companies/5019/tender-offers
GET /v1/companies/5019/indicators
GET /v1/companies/5019/earnings-releases
GET /v1/events?ticker=5019
GET /v1/companies/5019/trades         
GET /v1/companies/5019/cross-holdings 
GET /v1/companies/5019/brief

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