Who has been buying QRT stock?

4 distinct insiders have filed 4 disclosed insider purchases in QRT (405100), most recently on 2026-07-09. 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 QRT have?

QRT has 4 buy-side and 7 sell-side disclosures on record, covering ₩49.7B ($34.5M) in total reported value, spanning 2024-02-27 to 2026-07-09.

Do insider buys in Korean stocks predict returns?

Not uniformly. StockDrifts analysed 170,720 share-count changes across 56,930 Korean regulatory filings using cross-sectional alpha at fixed forward horizons, and found returns concentrated in particular signal tiers rather than in insider buying generally.

QRT 405100

Company

큐알티QRT

Insiders

Buys

Total Value

₩49.7B ($34.5M)

Avg Return

+28.78%

Last Filing

2026-07-09

QRT (405100) has 4 disclosed insider purchases and 7 disclosed disposals on record, filed by 4 distinct insiders. Together those filings cover ₩49.7B ($34.5M) in reported transaction value. The earliest filing StockDrifts holds for QRT is dated 2024-02-27; the most recent is 2026-07-09. Across these filings the average return since disclosure is +28.78%, measured from each filing date to the latest available close.

Price & insider activity (12 months)

Recent insider trades

Date	Type	Source	Insider	Position	Shares	Price at filing	Return	Value
2026-07-09	BUY	Market Buy	이규복 Gyubok Lee	CEO	1.0K	₩10,290	+4.0%	₩11M ($8K)
2026-06-11	BUY	Market Buy	이규복 Gyubok Lee	CEO	500	₩15,140	-4.2%	₩8M ($5K)
2026-06-11	BUY	Market Buy	이규복 Gyubok Lee	CEO	500	₩15,140	-4.2%	₩8M ($5K)
2026-05-26	BUY	Market Buy	이규복 Gyubok Lee	CEO	240	₩19,760	-26.6%	₩5M ($3K)
2026-03-26	BUY	신규선임	이규복 Gyubok Lee	CEO	760	₩17,480	-4.0%	₩13M ($9K)
2025-05-19	BUY	수증	김홍섭 Hongseop Kim	Managing Director (Assistant)	250.0K	₩12,750	+42.4%	₩3.2B ($2.2M)
2025-05-19	SELL	증여	김영부 Youngbu Kim	CEO	-250.0K	₩12,750	-42.4%	₩3.2B ($2.2M)
2024-03-11	SELL	Market Sell	노재영 Noh Jae-young	implementation	-50	₩34,350	+47.1%	₩2M ($1K)
2024-03-11	SELL	Market Sell	노재영 Noh Jae-young	implementation	-74	₩34,350	+47.1%	₩3M ($2K)
2024-03-11	SELL	Market Sell	노재영 Noh Jae-young	implementation	-50	₩34,350	+47.1%	₩2M ($1K)
2024-03-07	SELL	Market Sell	이윤근 Yungeun Lee	Managing Director	-1.0K	₩36,850	+50.7%	₩37M ($26K)
2024-02-29	SELL	Market Sell	디에스청담반도체1호신기술사업투자조합 DS Cheongdam Semiconductor No. 1 New Technology Business Investment Association	-	-705.0K	₩38,200	+52.5%	₩26.9B ($18.7M)
2024-02-28	SELL	Market Sell	디에스청담반도체1호신기술사업투자조합 DS Cheongdam Semiconductor No. 1 New Technology Business Investment Association	-	-520.9K	₩37,500	+51.6%	₩19.5B ($13.6M)
2024-02-27	SELL	Market Sell	디에스청담반도체1호신기술사업투자조합 DS Cheongdam Semiconductor No. 1 New Technology Business Investment Association	-	-85.1K	₩37,300	+51.3%	₩3.2B ($2.2M)

Frequently asked questions

Who has been buying QRT stock?: 4 distinct insiders have filed 4 disclosed insider purchases in QRT (405100), most recently on 2026-07-09. 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 QRT have?: QRT has 4 buy-side and 7 sell-side disclosures on record, covering ₩49.7B ($34.5M) in total reported value, spanning 2024-02-27 to 2026-07-09.
Do insider buys in Korean stocks predict returns?: Not uniformly. StockDrifts analysed 170,720 share-count changes across 56,930 Korean regulatory filings using cross-sectional alpha at fixed forward horizons, and found returns concentrated in particular signal tiers rather than in insider buying generally.

More on this data

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