Who has been buying Synclayer Inc. stock?

2 distinct investors have filed 1 disclosed large-shareholding filings in Synclayer Inc. (1724), most recently on 2025-11-20. 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 Synclayer Inc. have?

Synclayer Inc. has 1 buy-side and 15 sell-side disclosures on record, covering ¥905M ($5.8M) in total reported value, spanning 2021-04-27 to 2025-11-20.

Where does StockDrifts get Synclayer Inc. 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.

Synclayer Inc. 1724

Company

シンクレイヤ株式会社Synclayer Inc.

Investors

Buys

Total Value

¥905M ($5.8M)

Avg Return

-24.95%

Last Filing

2025-11-20

Synclayer Inc. (1724) has 1 disclosed large-shareholding filings and 15 disclosed disposals on record, filed by 2 distinct investors. Together those filings cover ¥905M ($5.8M) in reported transaction value. The earliest filing StockDrifts holds for Synclayer Inc. is dated 2021-04-27; the most recent is 2025-11-20. 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 -24.95%, 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
2025-11-20	SELL	unknown	株式会社MAS Buddy MAS Buddy Corp.	strategic	823.5K	¥697	-4.0%	¥172M ($1.1M)
2021-12-07	SELL	subscription	SMBC日興証券株式会社 SMBC Nikko Securities Inc.	other	151.8K	¥923	+21.4%	¥111M ($718K)
2021-11-22	SELL	subscription	SMBC日興証券株式会社 SMBC Nikko Securities Inc.	other	261.9K	¥978	+25.9%	¥60M ($390K)
2021-11-08	SELL	subscription	SMBC日興証券株式会社 SMBC Nikko Securities Inc.	other	335.4K	¥1,018	+28.8%	¥70M ($451K)
2021-10-28	SELL	subscription	SMBC日興証券株式会社 SMBC Nikko Securities Inc.	other	413.5K	¥1,141	+36.5%	¥85M ($550K)
2021-10-25	SELL	subscription	SMBC日興証券株式会社 SMBC Nikko Securities Inc.	other	466.3K	¥1,166	+37.8%	¥21M ($137K)
2021-10-21	SELL	subscription	SMBC日興証券株式会社 SMBC Nikko Securities Inc.	other	495.2K	¥1,173	+38.2%	¥50M ($324K)
2021-10-18	SELL	subscription	SMBC日興証券株式会社 SMBC Nikko Securities Inc.	other	544.9K	¥1,157	+37.3%	¥47M ($301K)
2021-10-13	SELL	subscription	SMBC日興証券株式会社 SMBC Nikko Securities Inc.	other	599.9K	¥1,087	+33.3%	¥15M ($99K)
2021-10-11	SELL	subscription	SMBC日興証券株式会社 SMBC Nikko Securities Inc.	other	624.1K	¥1,115	+35.0%	¥40M ($258K)
2021-10-06	SELL	subscription	SMBC日興証券株式会社 SMBC Nikko Securities Inc.	other	672.3K	¥1,062	+31.7%	¥46M ($298K)
2021-10-04	SELL	subscription	SMBC日興証券株式会社 SMBC Nikko Securities Inc.	other	723.2K	¥1,108	+34.6%	¥59M ($381K)
2021-09-29	SELL	subscription	SMBC日興証券株式会社 SMBC Nikko Securities Inc.	other	793.8K	¥1,195	+39.3%	¥40M ($255K)
2021-09-22	SELL	subscription	SMBC日興証券株式会社 SMBC Nikko Securities Inc.	other	846.3K	¥1,140	+36.4%	¥17M ($107K)
2021-09-16	SELL	subscription	SMBC日興証券株式会社 SMBC Nikko Securities Inc.	other	877.8K	¥978	+25.9%	¥43M ($277K)
2021-09-13	BUY	subscription	SMBC日興証券株式会社 SMBC Nikko Securities Inc.	other	937.1K	¥966	-24.9%	¥905M ($5.8M)
2021-05-14	BUY	unknown	株式会社MAS Buddy MAS Buddy Corp.	strategic	873.5K	¥1,086	-33.2%	¥949M ($6.1M)
2021-04-27	BUY	unknown	株式会社MAS Buddy MAS Buddy Corp.	strategic	873.5K	¥729	-0.6%	¥637M ($4.1M)

Frequently asked questions

Who has been buying Synclayer Inc. stock?: 2 distinct investors have filed 1 disclosed large-shareholding filings in Synclayer Inc. (1724), most recently on 2025-11-20. 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 Synclayer Inc. have?: Synclayer Inc. has 1 buy-side and 15 sell-side disclosures on record, covering ¥905M ($5.8M) in total reported value, spanning 2021-04-27 to 2025-11-20.
Where does StockDrifts get Synclayer Inc. 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 Synclayer Inc.. For how StockDrifts scores these disclosures, see the Japan insider signal tier research, or browse every Japanese stock we track.