Who has been buying SK-Electronics CO.,LTD. stock?

5 distinct investors have filed 7 disclosed large-shareholding filings in SK-Electronics CO.,LTD. (6677), most recently on 2025-06-05. 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 SK-Electronics CO.,LTD. have?

SK-Electronics CO.,LTD. has 7 buy-side and 3 sell-side disclosures on record, covering ¥2.2B ($14.2M) in total reported value, spanning 2021-06-04 to 2025-06-05.

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.

SK-Electronics CO.,LTD. 6677

Company

株式会社エスケーエレクトロニクスSK-Electronics CO.,LTD.

Investors

Buys

Total Value

¥2.2B ($14.2M)

Avg Return

+109.24%

Last Filing

2025-06-05

SK-Electronics CO.,LTD. (6677) has 7 disclosed large-shareholding filings and 3 disclosed disposals on record, filed by 5 distinct investors. Together those filings cover ¥2.2B ($14.2M) in reported transaction value. The earliest filing StockDrifts holds for SK-Electronics CO.,LTD. is dated 2021-06-04; the most recent is 2025-06-05. Across these filings the average return since disclosure is +109.24%, 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
2025-06-05	SELL	unknown	株式会社写真化学 SHASHIN KAGAKU CO.,LTD.	strategic	769.4K	¥2,523	-27.8%	¥287M ($1.9M)
2025-06-05	BUY	unknown	株式会社写真化学 SHASHIN KAGAKU CO.,LTD.	strategic	769.4K	¥2,523	-	¥287M ($1.9M)
2023-11-01	BUY	negotiated	株式会社京都銀行 The Bank of Kyoto,Ltd.	strategic	356.2K	¥2,791	+15.6%	¥994M ($6.4M)
2023-11-01	BUY	negotiated	株式会社京都銀行 The Bank of Kyoto,Ltd.	strategic	356.2K	¥2,791	+15.6%	¥994M ($6.4M)
2023-11-01	BUY	negotiated	京銀リース・キャピタル株式会社 Kyoto Bank Lease Capital Co., Ltd.	strategic	221.2K	¥2,791	+15.6%	¥617M ($4.0M)
2023-11-01	BUY	negotiated	京銀リース・キャピタル株式会社 Kyoto Bank Lease Capital Co., Ltd.	strategic	221.2K	¥2,791	+15.6%	¥617M ($4.0M)
2022-09-26	BUY	Market Buy	三井住友DSアセットマネジメント株式会社 Sumitomo Mitsui DS Asset Management Company, Limited	passive	447.6K	¥1,283	+151.4%	¥568M ($3.7M)
2022-09-26	SELL	Market Buy	SMBC日興証券株式会社 SMBC Nikko Securities Inc.	other	400	¥1,283	-151.4%	¥29M ($188K)
2021-10-07	BUY	Market Buy	三井住友DSアセットマネジメント株式会社 Sumitomo Mitsui DS Asset Management Company, Limited	passive	548.2K	¥915	+252.5%	¥502M ($3.2M)
2021-10-07	BUY	Market Buy	SMBC日興証券株式会社 SMBC Nikko Securities Inc.	other	22.4K	¥915	+252.5%	¥20M ($132K)
2021-06-04	SELL	Market Buy	三井住友DSアセットマネジメント株式会社 Sumitomo Mitsui DS Asset Management Company, Limited	passive	548.2K	¥1,047	-208.0%	¥338M ($2.2M)

Frequently asked questions

Who has been buying SK-Electronics CO.,LTD. stock?: 5 distinct investors have filed 7 disclosed large-shareholding filings in SK-Electronics CO.,LTD. (6677), most recently on 2025-06-05. 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 SK-Electronics CO.,LTD. have?: SK-Electronics CO.,LTD. has 7 buy-side and 3 sell-side disclosures on record, covering ¥2.2B ($14.2M) in total reported value, spanning 2021-06-04 to 2025-06-05.
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.

More on this data

Every trade listed above comes from an official regulatory disclosure. For how StockDrifts scores these disclosures, see the Japan insider signal tier research, or browse every Japanese stock we track.