Stock Trading Canary

Built: 2026-10-19T16:02:49+00:00 · 中文

← South Korea

SOUTH KOREA · OPENDART

Ray Co., Ltd.

레이 · 228670 · KOSDAQ · Healthcare · Medical Devices

Score

56.1

Rank 290 of 745 · KR-v1 · as of 2026-10-18

Buyers 35%60
Size 25%24
Role 20%90
Recency 10%12
Conviction 10%100

Insider timeline

2 insiders bought within 10 days, 2 Jun to 11 Jun: 1 Board member, 1 Executive. The share closed at 5,200.00 on the first of those days and at 4,600.00 most recently (−11.5%).

Several insiders within 15 days: 2026-06-02 – 2026-06-11Jeon JinhooJeon JinhooMember of the executive committeeExecutiveKim YohanKim YohanMember of the executive committeeExecutiveYoon SoobinYoon SoobinDirectorBoard member2026-05-06 · Jeon Jinhoo · purchase · 2,604,800 KRW2026-05-08 · Jeon Jinhoo · purchase · 1,330,350 KRW2026-05-29 · Yoon Soobin · purchase · 10,625,342 KRW2026-06-01 · Yoon Soobin · purchase · 690,480 KRW2026-06-02 · Yoon Soobin · purchase · 13,899,535 KRW2026-06-11 · Kim Yohan · purchase · 9,198,000 KRWMayJunJulAugSepOct

Tap an item for what it means.

●A purchase: the bigger the dot, the more was bought

Each dot is one insider's purchases on one day. The dot's area follows the amount: the largest purchase here gets the largest dot. Hold the pointer over a dot to see the date and the amount.

▮Purple band: several insiders bought within 15 days

The band marks the stretch with the most different buyers: at most 15 days long and at least two people. Here it is 2 Jun – 11 Jun, with 2 insiders. Only the strongest stretch is marked. Several people deciding the same thing is harder to explain by one person's private reasons, but insiders often buy together just after a closed period ends, so compare it with the grey weekly bars.

Blue line: this share's price, −49.4% over these six months

The closing price of each day, from 9,090.00 on 2026-04-21 to 4,600.00 on 2026-10-16. The line has no scale; read it for high and low: a dot on a low stretch was bought cheaply, a dot on a high stretch was not.

Dashed line: the typical stock on the same exchange, −31.9%

Taken from the 1525 other stocks on the same exchange that this site holds prices for. Each is measured from the first day of the window, and every day the middle one is drawn. It starts where the blue line starts, so the gap between the two is the difference: this share −49.4%, the typical one −31.9%, 17.5 points behind. It is not an index and not a comparison within one industry.

This company: insiders buying per month, last 12 months

Nov
Dec
Jan
1Feb
1Mar
1Apr
2May
2Jun
Jul
Aug
Sep
Oct

Darker bars are inside the 180-day window above.

Who traded

InsiderRolePurchasesSalesBoughtFirst purchaseShare price since
Jeon JinhooExecutive2—3.9M KRW2026-05-06−42.6%
Kim YohanExecutive1—9.2M KRW2026-06-11+1.1%
Yoon SoobinBoard member3—25.2M KRW2026-05-29−13.0%

Insiders' buying price vs the latest close

Insiders paid 5,143.08 KRW a share on average (10 purchase lines, 3 buyers, 2026-02-27 – 2026-06-11). The close on 2026-10-16 was 10.6% below that price.

The latest purchase (2026-06-11) was at 4,599.00 KRW; the close was level with that price.

Prices paid are weighted by shares and taken from the filings; dividends are not counted. Not scored.

Insider trades on the exchange

Purchases and sales on the exchange in the last 12 months. The filing gives the settlement date; the trade date is two trading days earlier.

Trade dateInsiderRoleTradeSharesPriceValueFiling
2026-06-11Kim YohanSenior managing directorBought on the exchange2,000₩4,599₩9.2MDART ↗
2026-06-02Yoon SoobinOutside directorBought on the exchange2,795₩4,973₩13.9MDART ↗
2026-06-01Yoon SoobinOutside directorBought on the exchange137₩5,040₩690,480DART ↗
2026-05-29Yoon SoobinOutside directorBought on the exchange2,054₩5,173₩10.6MDART ↗
2026-05-08Jeon JinhooManaging directorBought on the exchange181₩7,350₩1.3MDART ↗
2026-05-06Jeon JinhooManaging directorBought on the exchange320₩8,140₩2.6MDART ↗
2026-04-01Jeon JinhooManaging directorBought on the exchange106₩5,220₩553,320DART ↗
2026-03-05Jeon JinhooManaging directorBought on the exchange150₩5,143₩771,450DART ↗
2026-03-04Jeon JinhooManaging directorBought on the exchange343₩4,946₩1.7MDART ↗
2026-02-27Jeon JinhooManaging directorBought on the exchange400₩5,686₩2.3MDART ↗
2025-11-20Lee Sang ChulCEOSold on the exchange20,756₩4,180₩86.8MDART ↗
Other changes in holdings · 16

Option exercises, grants, new shares, inheritance, gifts, off-exchange trades and trades by companies and funds. Not counted in the score.

DateInsiderRoleReasonSharesFiling
2026-09-16Graphy Inc.10% shareholderAcquisition in OTC(+)1,686,228DART ↗
2026-09-16RayHoldings10% shareholderDisposal in OTC(-)1,686,228DART ↗
2026-09-15Graphy Inc.10% shareholderAcquisition in OTC(+)2,401,521DART ↗
2026-09-15RayHoldings10% shareholderDisposal in OTC(-)1,209,709DART ↗
2026-09-15Lee Sang ChulCEODisposal in OTC(-)1,191,812DART ↗
2026-05-28KyuHeeKimOutside directorNew report(+)4,867DART ↗
2026-05-28KyuHeeKimOutside directorNew report(+)2,790DART ↗
2026-04-30RayHoldings10% shareholderOthers(+)37,971DART ↗
2025-02-14Lee ByungCheolManaging directorNew report(+)500DART ↗
2025-02-14Lee MinKyuManaging directorNew report(+)2,000DART ↗
2025-02-13Byun ChanghwanSenior managing directorNew report(+)1,000DART ↗
2025-01-24Shin Seung hoonManaging director신규보고(+)1,000DART ↗
2025-01-16SHIN YEON OHManaging director신규보고(+)500DART ↗
2025-01-15SONG WILLIAM WOOSUKVice president신규보고(+)500DART ↗
2021-06-23RayHoldings10% shareholderAcquisition of new shares without compensation(+)1,428,983DART ↗
2019-08-08RayHoldings10% shareholderNew listing(+)1,428,983DART ↗