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Saibu Gas Holdings Co.,Ltd. 9536

Company
西部ガスホールディングス株式会社Saibu Gas Holdings Co.,Ltd.
Investors
12
Buys
12
Total Value
¥11.3B ($72.9M)
Avg Return
+12.73%
Last Filing
2026-03-23

Saibu Gas Holdings Co.,Ltd. (9536) has 12 disclosed large-shareholding filings and 9 disclosed disposals on record, filed by 12 distinct investors. Together those filings cover ¥11.3B ($72.9M) in reported transaction value. The earliest filing StockDrifts holds for Saibu Gas Holdings Co.,Ltd. is dated 2021-09-22; the most recent is 2026-03-23. Across these filings the average return since disclosure is +12.73%, measured from each filing date to the latest available close.

Price & insider activity (12 months)

Recent filings

DateTypeSourceInsiderPurposeSharesPrice at filingReturnValue
2026-03-23BUYunknown
株式会社 三井住友銀行
other874.4K¥2,431+9.6%¥2.1B ($13.7M)
2026-03-23BUYunknown
SMBC日興証券株式会社
other1.1M¥2,431+9.6%¥2.7B ($17.2M)
2025-03-06SELLnegotiated
三井住友信託銀行株式会社
Sumitomo Mitsui Trust Bank,Limited
strategic382.0K¥1,714-55.4%¥650M ($4.2M)
2025-03-06SELLnegotiated
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.
other669.5K¥1,714-55.4%¥217M ($1.4M)
2025-03-06SELLnegotiated
日興アセットマネジメント株式会社
Nikko Asset Management Co.,Ltd.
other304.1K¥1,714-55.4%¥6M ($41K)
2024-07-04BUYnegotiated
三井住友信託銀行株式会社
Sumitomo Mitsui Trust Bank,Limited
strategic764.0K¥2,004+32.9%¥1.5B ($9.9M)
2024-07-04BUYnegotiated
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.
other795.3K¥2,004+32.9%¥1.6B ($10.3M)
2024-07-04BUYnegotiated
日興アセットマネジメント株式会社
Nikko Asset Management Co.,Ltd.
other308.4K¥2,004+32.9%¥618M ($4.0M)
2024-05-08SELLnegotiated
三井住友信託銀行株式会社
Sumitomo Mitsui Trust Bank,Limited
strategic764.0K¥1,954-36.3%¥167M ($1.1M)
2024-05-08SELLnegotiated
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.
other735.2K¥1,954-36.3%¥552M ($3.6M)
2024-05-08SELLnegotiated
日興アセットマネジメント株式会社
Nikko Asset Management Co.,Ltd.
other308.9K¥1,954-36.3%¥29M ($188K)
2023-10-02BUYnegotiated
株式会社熊本銀行
Kumamoto Bank, Ltd.
strategic149.2K¥1,930--
2023-10-02BUYnegotiated
株式会社福岡銀行
THE BANK OF FUKUOKA, LTD.
strategic1.8M¥1,930--
2023-10-02BUYnegotiated
株式会社十八親和銀行
Eighteenth Shinwa Bank, Ltd.
strategic1.2M¥1,930--
2023-10-02BUYnegotiated
株式会社福岡中央銀行
Fukuoka Chuo Bank, Ltd.
strategic451.1K¥1,930-¥871M ($5.6M)
2022-07-25SELLMarket Buy
日本生命保険相互会社
Nippon Life Insurance Company
passive1.9M¥1,847-44.2%¥687M ($4.4M)
2022-06-22BUYunknown
株式会社 三井住友銀行
Sumitomo Mitsui Banking Corporation
other1.3M¥1,773+50.3%¥2.3B ($14.9M)
2022-06-22SELLunknown
SMBC日興証券株式会社
SMBC Nikko Securities Inc.
other22.7K¥1,773-50.3%¥40M ($255K)
2022-06-22BUYunknown
SMBCファイナンスサービス株式会社
SMBC Finance Service Co., Ltd.
other84.3K¥1,773--
2022-05-20BUYMarket Buy
日本生命保険相互会社
Nippon Life Insurance Company
passive2.3M¥1,941+37.3%¥4.4B ($28.2M)
2022-05-20SELLMarket Buy
大樹生命保険株式会社
Taiki Life Insurance Co., Ltd.
passive33.1K¥1,941-37.3%¥22M ($140K)
2021-09-24BUYunknown
SMBC日興証券株式会社
SMBC Nikko Securities Inc.
other43.9K¥2,617+1.8%¥115M ($741K)
2021-09-24BUYunknown
株式会社 三井住友銀行
Sumitomo Mitsui Banking Corporation
other1.7M¥2,617+1.8%¥4.6B ($29.5M)
2021-09-24BUYunknown
SMBCファイナンスサービス株式会社
SMBC Finance Service Co., Ltd.
other84.3K¥2,617+1.8%¥221M ($1.4M)
2021-09-22BUYnegotiated
三井住友信託銀行株式会社
Sumitomo Mitsui Trust Bank,Limited
strategic848.9K¥2,528--
2021-09-22BUYnegotiated
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.
other1.0M¥2,528+5.4%¥658M ($4.2M)
2021-09-22BUYnegotiated
日興アセットマネジメント株式会社
Nikko Asset Management Co.,Ltd.
other322.4K¥2,528+5.4%¥150M ($970K)

Frequently asked questions

Who has been buying Saibu Gas Holdings Co.,Ltd. stock?
12 distinct investors have filed 12 disclosed large-shareholding filings in Saibu Gas Holdings Co.,Ltd. (9536), most recently on 2026-03-23. 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 Saibu Gas Holdings Co.,Ltd. have?
Saibu Gas Holdings Co.,Ltd. has 12 buy-side and 9 sell-side disclosures on record, covering ¥11.3B ($72.9M) in total reported value, spanning 2021-09-22 to 2026-03-23.
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.