Who has been buying Olympus Corporation stock?

27 distinct investors have filed 53 disclosed large-shareholding filings in Olympus Corporation (7733), most recently on 2026-03-19. Each filer, their role, the number of shares and the price at filing are listed in the table on this page.

How many insider filings does Olympus Corporation have?

Olympus Corporation has 53 buy-side and 28 sell-side disclosures on record, covering ¥429.1B ($2.8B) in total reported value, spanning 2021-06-21 to 2026-03-19.

Where does StockDrifts get Olympus Corporation insider data?

From EDINET large-shareholding (5%+) reports — the official filing system run by the Financial Services Agency (Japan). StockDrifts parses each disclosure and matches it to daily price history; the original filings remain available directly from EDINET.

Do insider buys in Japanese stocks predict returns?

Not uniformly. StockDrifts scored 101,000+ Japanese large-shareholding filings on fixed 12-month forward returns and found the predictive power concentrated in specific filer types and filing patterns rather than spread evenly across all disclosures.

Olympus Corporation 7733

Company

オリンパス株式会社Olympus Corporation

Investors

Buys

Total Value

¥429.1B ($2.8B)

Avg Return

-34.89%

Last Filing

2026-03-19

Olympus Corporation (7733) has 53 disclosed large-shareholding filings and 28 disclosed disposals on record, filed by 27 distinct investors. Together those filings cover ¥429.1B ($2.8B) in reported transaction value. The earliest filing StockDrifts holds for Olympus Corporation is dated 2021-06-21; the most recent is 2026-03-19. All of it is parsed from EDINET large-shareholding (5%+) reports, the official disclosure system operated by the Financial Services Agency (Japan). Across these filings the average return since disclosure is -34.89%, measured from each filing date to the latest available close.

Price & insider activity (12 months)

Recent filings

Date	Type	Source	Insider	Purpose	Shares	Price at filing	Return	Value
2026-07-07	BUY	Market Buy	アーチザン・インベストメンツ・ジーピー・エルエルシー(Artisan Investments GP LLC) Artisan Investments GP LLC	passive	62.7M	¥1,790	+0.9%	¥112.2B ($724.2M)
2026-03-19	SELL	Market Buy	MFSインベストメント・マネジメント株式会社	passive	624.8K	¥1,374	-14.9%	¥986M ($6.4M)
2026-03-19	SELL	Market Buy	マサチューセッツ・ファイナンシャル・サービセズ・カンパニー Massachusetts Financial Services Company	passive	42.0M	¥1,374	-14.9%	¥66.4B ($428.1M)
2025-09-19	SELL	unknown	ベイリー・ギフォード・オーバーシーズ・リミテッド Baillie Gifford Overseas Limited	other	24.1M	¥1,851.5	+14.7%	¥16.5B ($106.1M)
2025-09-19	SELL	unknown	三井住友トラスト・アセットマネジメント株式会社 Sumitomo Mitsui Trust Asset Management Co.,Ltd.	other	32.2M	¥1,851.5	+14.7%	¥844M ($5.4M)
2025-09-19	BUY	unknown	アモーヴァ・アセットマネジメント株式会社 Amova Asset Management Co., Ltd.	other	38.4M	¥1,851.5	-14.7%	¥2.7B ($17.7M)
2025-09-19	SELL	unknown	三井住友信託銀行株式会社 Sumitomo Mitsui Trust Bank,Limited	unknown	0	¥1,851.5	+14.7%	¥569.4B ($3.7B)
2025-09-19	SELL	unknown	ベイリー・ギフォード・アンド・カンパニー Baillie Gifford & Co	other	19.3M	¥1,851.5	+14.7%	¥9.7B ($62.6M)
2025-01-07	BUY	Market Buy	ブラックロック・インベストメント・マネジメント(ユーケー)リミテッドLimited) BlackRock Investment Management (UK	passive	1.8M	¥2,344	-32.7%	¥552M ($3.6M)
2025-01-07	BUY	Market Buy	ブラックロック・インスティテューショナル・トラスト・カンパニー、エヌ.エイ.(BlackRock Institutional Trust Company BlackRock Institutional Trust Company, N.A.	passive	16.1M	¥2,344	-32.7%	¥828M ($5.3M)
2025-01-07	BUY	Market Buy	ブラックロック・ファンド・アドバイザーズ BlackRock Fund Advisors	passive	22.6M	¥2,344	-32.7%	¥10.5B ($67.7M)
2025-01-07	BUY	Market Buy	ブラックロック・アセット・マネジメント・アイルランド・リミテッド BlackRock Asset Management Ireland Limited	passive	7.6M	¥2,344	-32.7%	¥3.6B ($23.2M)
2025-01-07	BUY	Market Buy	ブラックロック・ファンド・マネジャーズ・リミテッド BlackRock Fund Managers Limited	passive	4.9M	¥2,344	-32.7%	¥5.0B ($32.1M)
2025-01-07	BUY	Market Buy	ブラックロック(ネザーランド)BVBV) BlackRock (Netherlands	passive	4.2M	¥2,344	-32.7%	¥5.5B ($35.6M)
2025-01-07	SELL	Market Buy	ブラックロック・インベストメント・マネジメント・エルエルシー BlackRock Investment Management LLC	passive	1.0M	¥2,344	+32.7%	¥552M ($3.6M)
2025-01-07	BUY	Market Buy	ブラックロック・アドバイザーズ・エルエルシー(BlackRock Advisers BlackRock Advisers, LLC	passive	1.2M	¥2,344	-32.7%	¥2.8B ($18.1M)
2025-01-07	BUY	Market Buy	ブラックロック・ジャパン株式会社 BlackRock Japan Co., Ltd.	passive	27.1M	¥2,344	-32.7%	¥5.5B ($35.6M)
2024-05-08	BUY	Market Buy	MFSインベストメント・マネジメント株式会社 MFS Investment Management K.K.	passive	1.0M	¥2,257.5	-30.1%	¥2.4B ($15.3M)
2024-05-08	BUY	Market Buy	マサチューセッツ・ファイナンシャル・サービセズ・カンパニー Massachusetts Financial Services Company	passive	58.1M	¥2,257.5	-30.1%	¥131.2B ($846.5M)
2023-09-19	BUY	unknown	ファースト・センティア・インベスターズ(シンガポール)) First Sentier Investors (Singapore	passive	8.6M	¥1,950	-26.6%	¥16.8B ($108.3M)
2023-09-19	BUY	unknown	ファースト・センティア・インベスターズ(香港)リミテッドLimited) First Sentier Investors (Hong Kong	passive	2.7M	¥1,950	-26.6%	¥5.3B ($34.0M)
2023-09-19	BUY	unknown	ファースト・センティア・インベスターズ(シンガポール)) First Sentier Investors (Singapore	passive	8.6M	¥1,950	-26.6%	¥16.8B ($108.3M)
2023-09-19	BUY	unknown	ファースト・センティア・インベスターズ(香港)リミテッドLimited) First Sentier Investors (Hong Kong	passive	2.7M	¥1,950	-26.6%	¥5.3B ($34.0M)
2023-09-19	BUY	unknown	ファースト・センティア・インベスターズ(シンガポール)) First Sentier Investors (Singapore	passive	8.6M	¥1,950	-26.6%	¥16.8B ($108.3M)
2023-09-19	BUY	unknown	ファースト・センティア・インベスターズ(香港)リミテッドLimited) First Sentier Investors (Hong Kong	passive	2.7M	¥1,950	-26.6%	¥5.3B ($34.0M)
2023-09-19	BUY	unknown	ファースト・センティア・インベスターズ(シンガポール)) First Sentier Investors (Singapore	passive	8.6M	¥2,082	-24.2%	¥4.7B ($30.6M)
2023-09-19	BUY	unknown	ファースト・センティア・インベスターズ(香港)リミテッドLimited) First Sentier Investors (Hong Kong	passive	2.7M	¥2,082	-24.2%	¥5.6B ($36.3M)
2023-09-19	BUY	unknown	ファースト・センティア・インベスターズ(シンガポール)) First Sentier Investors (Singapore	passive	8.6M	¥2,082	-24.2%	¥4.7B ($30.6M)
2023-09-19	BUY	unknown	ファースト・センティア・インベスターズ(香港)リミテッドLimited) First Sentier Investors (Hong Kong	passive	2.7M	¥2,082	-24.2%	¥5.6B ($36.3M)
2023-09-19	BUY	unknown	三菱UFJモルガン・スタンレー証券株式会社 Mitsubishi UFJ Morgan Stanley Securities Co., Ltd.	other	1.4M	¥2,082	-24.2%	¥2.9B ($18.9M)
2023-09-19	BUY	unknown	三菱UFJ国際投信株式会社 Mitsubishi UFJ Financial Group Inc.	passive	20.1M	¥2,082	-24.2%	¥527M ($3.4M)
2023-09-19	SELL	unknown	三菱UFJ信託銀行株式会社 Mitsubishi UFJ Financial Group Inc.	passive	18.6M	¥2,082	+24.2%	¥2.1B ($13.6M)
2023-09-19	SELL	unknown	株式会社三菱UFJ銀行 Mitsubishi UFJ Financial Group Inc.	unknown	0	¥2,082	+24.2%	¥35.9B ($231.3M)
2023-07-24	SELL	Market Buy	キャピタル・リサーチ・アンド・マネージメント・カンパニー(Capital Research and Management Company) Capital Research and Management Company	passive	61.6M	¥2,232.5	+29.3%	¥43.0B ($277.2M)
2023-05-10	BUY	unknown	野村アセットマネジメント株式会社 Nomura Asset Management Co., Ltd.	other	82.9M	¥2,428	-35.0%	¥24.9B ($160.7M)
2023-05-10	SELL	unknown	ノムラインターナショナルピーエルシー NOMURA INTERNATIONAL PLC	other	2.9M	¥2,428	+35.0%	¥23.7B ($152.7M)
2023-05-10	SELL	unknown	野村證券株式会社 Nomura Securities Co.,Ltd.	other	79.1K	¥2,428	+35.0%	¥30.7B ($198.3M)
2023-01-30	BUY	negotiated	ファースト・センティア・インベスターズ(シンガポール)) First Sentier Investors (Singapore	passive	6.4M	¥2,377	-39.8%	¥15.3B ($98.4M)
2023-01-30	BUY	negotiated	ファースト・センティア・インベスターズ(香港)リミテッドLimited) First Sentier Investors (Hong Kong	passive	2.7M	¥2,377	-39.8%	¥6.5B ($41.8M)
2023-01-30	BUY	negotiated	ファースト・センティア・インベスターズ(シンガポール)) First Sentier Investors (Singapore	passive	6.4M	¥2,386.5	-33.9%	¥3.7B ($23.8M)
2023-01-30	BUY	negotiated	ファースト・センティア・インベスターズ(香港)リミテッドLimited) First Sentier Investors (Hong Kong	passive	2.7M	¥2,386.5	-33.9%	¥6.5B ($42.0M)
2023-01-30	BUY	negotiated	株式会社三菱UFJ銀行 Mitsubishi UFJ Financial Group Inc.	strategic	17.5M	¥2,386.5	-33.9%	¥41.8B ($269.8M)
2023-01-30	BUY	negotiated	ファースト・センティア・インベスターズ(シンガポール)) First Sentier Investors (Singapore	passive	6.4M	¥2,377	-39.8%	¥15.3B ($98.4M)
2023-01-30	BUY	negotiated	ファースト・センティア・インベスターズ(香港)リミテッドLimited) First Sentier Investors (Hong Kong	passive	2.7M	¥2,377	-39.8%	¥6.5B ($41.8M)
2023-01-30	BUY	negotiated	ファースト・センティア・インベスターズ(シンガポール)) First Sentier Investors (Singapore	passive	6.4M	¥2,377	-39.8%	¥15.3B ($98.4M)
2023-01-30	BUY	negotiated	ファースト・センティア・インベスターズ(シンガポール)) First Sentier Investors (Singapore	passive	6.4M	¥2,386.5	-33.9%	¥3.7B ($23.8M)
2023-01-30	BUY	negotiated	ファースト・センティア・インベスターズ(香港)リミテッドLimited) First Sentier Investors (Hong Kong	passive	2.7M	¥2,386.5	-33.9%	¥6.5B ($42.0M)
2023-01-30	BUY	negotiated	ファースト・センティア・インベスターズ(香港)リミテッドLimited) First Sentier Investors (Hong Kong	passive	2.7M	¥2,377	-39.8%	¥6.5B ($41.8M)
2023-01-30	SELL	negotiated	三菱UFJ国際投信株式会社 Mitsubishi UFJ Financial Group Inc.	passive	20.2M	¥2,386.5	+33.9%	¥614M ($4.0M)
2023-01-30	SELL	negotiated	三菱UFJ信託銀行株式会社 Mitsubishi UFJ Financial Group Inc.	passive	20.0M	¥2,386.5	+33.9%	¥1.5B ($9.9M)

Showing the 50 most recent of 119 filings.

Frequently asked questions

Who has been buying Olympus Corporation stock?: 27 distinct investors have filed 53 disclosed large-shareholding filings in Olympus Corporation (7733), most recently on 2026-03-19. Each filer, their role, the number of shares and the price at filing are listed in the table on this page.
How many insider filings does Olympus Corporation have?: Olympus Corporation has 53 buy-side and 28 sell-side disclosures on record, covering ¥429.1B ($2.8B) in total reported value, spanning 2021-06-21 to 2026-03-19.
Where does StockDrifts get Olympus Corporation insider data?: From EDINET large-shareholding (5%+) reports — the official filing system run by the Financial Services Agency (Japan). StockDrifts parses each disclosure and matches it to daily price history; the original filings remain available directly from EDINET.
Do insider buys in Japanese stocks predict returns?: Not uniformly. StockDrifts scored 101,000+ Japanese large-shareholding filings on fixed 12-month forward returns and found the predictive power concentrated in specific filer types and filing patterns rather than spread evenly across all disclosures.

Source filings

Every trade listed above is disclosed in EDINET large-shareholding (5%+) reports, filed with the Financial Services Agency (Japan). View the original EDINET filings for Olympus Corporation. For how StockDrifts scores these disclosures, see the Japan insider signal tier research, or browse every Japanese stock we track.