Trading account gains and losses

12 Months Ended

Mar. 31, 2026

Trading Account Gains And Losses [Abstract]

25. Trading account gains and losses

The MHFG Group performs trading activities through market making, sales, and arbitrage. Accordingly, Trading account gains (losses)—net include gains and losses from transactions undertaken for trading purposes, including both market making for customers and proprietary trading, or transactions through which the Group seeks to capture gains arising from short-term changes in market value. Trading account gains (losses)—net also include gains and losses related to changes in the fair value of derivatives and other financial instruments not eligible for hedge accounting under U.S. GAAP that are utilized to offset mainly interest rate risk related to the Group’s various assets and liabilities, as well as gains and losses related to changes in the fair value of foreign currency-denominated debt securities reported as Trading securities. Net trading gains (losses) for the fiscal years ended March 31, 2024, 2025 and 2026 are comprised of the following:


	2024			2025			2026
	(in millions of yen)
Trading account gains (losses)—net:
Trading securities		(171,498	)		283,448			815,381
Derivative contracts:
Interest rate contracts		(22,003	)		(10,636	)		(709,941	)
Foreign exchange contracts (1)		387,591			464,463			332,489
Equity-related contracts		240,277			64,292			(317,436	)
Credit-related contracts (2)		(2,101	)		7,495			(21,910	)
Other contracts		(42,005	)		(5,678	)		4,166
Total		390,260			803,383			102,749
Foreign exchange gains (losses)—net (3)		(19,390	)		(185,963	)		(40,536	)

Net trading gains (losses)		370,870			617,420			62,213

Notes:

(1)	Amounts include gains and losses on currency swaps.

(2)

Amounts do not include the net gains (losses) of ¥(952) million, ¥(964) million and ¥(809) million on the credit derivatives economically managing the credit risk of loans during the fiscal years ended March 31, 2024, 2025 and 2026, respectively. The net gains (losses) is recorded in Other noninterest income (expenses).

(3)

Amounts include realized and unrealized gains and losses on both derivative instruments and nonderivative instruments. Amounts on derivative instruments include gains and losses on forward foreign exchange contracts and currency options. Amounts on nonderivative instruments include translation gains and losses related to foreign currency-denominated debt securities reported as Trading securities.