Stock Trading Canary

Built: 2026-10-19T16:02:49+00:00 · 中文

← South Korea

SOUTH KOREA · OPENDART

SAMSUNG SDS CO., LTD.

삼성에스디에스 · 018260 · KOSPI · Technology · Information Technology Services

Score

90.8

Rank 4 of 745 · KR-v1 · as of 2026-10-18

Buyers 35%100
Size 25%96
Role 20%90
Recency 10%38
Conviction 10%100

Insider timeline

40 insiders bought within 15 days, 23 Jun to 7 Jul: 40 Executive. 4 of them bought again later. 4 more bought afterwards. The share closed at 191,600.00 on the first of those days and at 199,900.00 most recently (+4.3%).

Several insiders within 15 days: 2026-06-23 – 2026-07-07GUM KI HOGUM KI HOMember of the executive committeeExecutiveLee Jun-huiLee Jun-huiMember of the executive committeeExecutiveLEE HOJOONLEE HOJOONMember of the executive committeeExecutiveKim MinKim MinMember of the executive committeeExecutiveMin Dae-hongMin Dae-hongMember of the executive committeeExecutiveSoonmin BaeSoonmin BaeMember of the executive committeeExecutiveKaeyoung ShinKaeyoung ShinMember of the executive committeeExecutivePark sok hwanPark sok hwanMember of the executive committeeExecutiveHan Ho-jeonHan Ho-jeonMember of the executive committeeExecutiveKim Jeong-ukKim Jeong-ukMember of the executive committeeExecutive2026-04-23 · GUM KI HO · purchase · 86,750,000 KRW2026-04-23 · Lee Jun-hui · purchase · 17,860,000 KRW2026-04-24 · LEE HOJOON · purchase · 57,142,800 KRW2026-05-20 · Kim Min · purchase · 16,400,000 KRW2026-05-20 · Min Dae-hong · purchase · 16,190,000 KRW2026-06-15 · Soonmin Bae · purchase · 8,262,000 KRW2026-06-16 · Kaeyoung Shin · purchase · 20,868,000 KRW2026-06-23 · Min Dae-hong · purchase · 19,160,000 KRW2026-06-23 · Park sok hwan · purchase · 22,484,003 KRW2026-06-24 · Kim Min · purchase · 19,130,000 KRW2026-06-24 · Park sok hwan · purchase · 6,951,001 KRW2026-06-25 · Han Ho-jeon · purchase · 19,050,000 KRW2026-06-25 · Kim Jeong-uk · purchase · 9,490,000 KRW2026-06-26 · Kim Jeong-uk · purchase · 27,675,000 KRW2026-06-26 · LEE HOJOON · purchase · 45,030,000 KRW2026-06-29 · LEE HOJOON · purchase · 61,818,564 KRW2026-06-30 · Soonmin Bae · purchase · 19,000,000 KRW2026-07-07 · Kaeyoung Shin · purchase · 20,868,000 KRW2026-07-09 · Min Dae-hong · purchase · 18,912,149 KRW2026-07-20 · Kim Min · purchase · 18,690,000 KRW2026-07-20 · Min Dae-hong · purchase · 9,300,000 KRW2026-07-21 · Min Dae-hong · purchase · 1,835,000 KRW2026-08-21 · Soonmin Bae · purchase · 22,500,000 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 23 Jun – 7 Jul, with 40 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, +10.9% over these six months

The closing price of each day, from 180,200.00 on 2026-04-21 to 199,900.00 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, −20.4%

Taken from the 685 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 +10.9%, the typical one −20.4%, 31.3 points ahead. It is not an index and not a comparison within one industry.

36 more insiders traded in the window and are not drawn.

This company: insiders buying per month, last 12 months

Nov
Dec
5Jan
2Feb
Mar
3Apr
2May
35Jun
14Jul
1Aug
Sep
Oct

Darker bars are inside the 180-day window above.

Who traded

InsiderRolePurchasesSalesBoughtFirst purchaseShare price since
GUM KI HOExecutive1—86.8M KRW2026-04-23+12.1%
Lee Jun-huiExecutive1—17.9M KRW2026-04-23+12.1%
LEE HOJOONExecutive3—164.0M KRW2026-04-24+17.7%
Kim MinExecutive3—54.2M KRW2026-05-20+21.3%
Min Dae-hongExecutive5—65.4M KRW2026-05-20+21.3%
Soonmin BaeExecutive3—49.8M KRW2026-06-15−16.5%
Kaeyoung ShinExecutive2—41.7M KRW2026-06-16−16.0%
Park sok hwanExecutive2—29.4M KRW2026-06-23+4.3%
Han Ho-jeonExecutive1—19.1M KRW2026-06-25+4.9%
Kim Jeong-ukExecutive2—37.2M KRW2026-06-25+4.9%
Lee Tae-huiExecutive1—98.7M KRW2026-06-25+4.9%
Ahn Dae-jungExecutive1—44.8M KRW2026-06-26+5.3%
Choi Gyu-hwangExecutive1—20.4M KRW2026-06-26+5.3%
Han Sang-wonExecutive1—21.3M KRW2026-06-26+5.3%
Jupyung LeeExecutive1—22.0M KRW2026-06-26+5.3%
Kim Beom-suExecutive1—19.9M KRW2026-06-26+5.3%
Kim Chang-minExecutive2—77.8M KRW2026-06-26+5.3%
Kim Eun-yeongExecutive2—140.6M KRW2026-06-26+5.3%
Kim Hak-gilExecutive1—95.0M KRW2026-06-26+5.3%
Kim Seong-gonExecutive1—18.4M KRW2026-06-26+5.3%
Kim Seung-giExecutive1—19.1M KRW2026-06-26+5.3%
Moon Sin-jeongExecutive1—19.2M KRW2026-06-26+5.3%
Park In-seokExecutive1—38.7M KRW2026-06-26+5.3%
Shin Chang-minExecutive2—19.2M KRW2026-06-26+5.3%
Baek Chang-hyeonExecutive1—19.3M KRW2026-06-29+0.6%
Hong Seong-cheonExecutive1—30.6M KRW2026-06-29+0.6%
Kim Jong-pilExecutive1—98.7M KRW2026-06-29+0.6%
Kim Sang-yongExecutive1—100.5M KRW2026-06-29+0.6%
Kim Tae-hoExecutive1—99.5M KRW2026-06-29+0.6%
Kim, Hyun sungExecutive1—38.5M KRW2026-06-29+0.6%
Lee Dong-seopExecutive1—19.0M KRW2026-06-29+0.6%
Seo Jin-uExecutive1—9.9M KRW2026-06-29+0.6%
Hong Gi-yeongExecutive1—22.9M KRW2026-06-30+4.8%
Kim Geung-hwanExecutive1—19.3M KRW2026-06-30+4.8%
Kim Seung-jinExecutive1—19.1M KRW2026-06-30+4.8%
Moon Gwan-hwiExecutive1—23.3M KRW2026-06-30+4.8%
Noh HyeonExecutive1—19.5M KRW2026-06-30+4.8%
Hwang Su-yeongExecutive1—47.7M KRW2026-07-01+1.3%
Park Il-uExecutive1—48.9M KRW2026-07-01+1.3%
CHANG YONG MINExecutive1—22.8M KRW2026-07-02−0.8%
Noh Gwang-binExecutive1—19.6M KRW2026-07-03+2.3%
Yeo Hyeong-minExecutive1—95.0M KRW2026-07-03+2.3%
Choi Gyu-manExecutive1—39.5M KRW2026-07-13+5.1%
Yoon Min-sikExecutive1—2.0bn KRW2026-07-13+5.1%
Jung Yeong-hunExecutive3—37.4M KRW2026-07-15+0.3%
Lee Gwan-huiExecutive1—18.6M KRW2026-07-20+7.6%

Insiders' buying price vs the latest close

Insiders paid 189,373.45 KRW a share on average (78 purchase lines, 50 buyers, 2025-10-23 – 2026-08-21). The close on 2026-10-16 was 5.6% above that price.

The latest purchase (2026-08-21) was at 225,000.00 KRW; the close was 11.2% below that price.

Prices paid are weighted by shares and taken from the filings; dividends are not counted. Not scored. 1 more purchase line could not be compared with the share price and is left out.

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
2026-08-21Soonmin BaeManaging directorBought on the exchange100₩225,000₩22.5MDART ↗
2026-07-21Min Dae-hongManaging directorBought on the exchange10₩183,500₩1.8MDART ↗
2026-07-21Jung Yeong-hunManaging directorBought on the exchange30₩189,100₩5.7MDART ↗
2026-07-20Lee Gwan-huiManaging directorBought on the exchange100₩186,500₩18.6MDART ↗
2026-07-20Min Dae-hongManaging directorBought on the exchange50₩186,000₩9.3MDART ↗
2026-07-20Jung Yeong-hunManaging directorBought on the exchange64₩185,500₩11.9MDART ↗
2026-07-20Kim MinManaging directorBought on the exchange100₩186,900₩18.7MDART ↗
2026-07-15Jung Yeong-hunManaging directorBought on the exchange100₩198,510₩19.9MDART ↗
2026-07-13Kim Chang-minManaging directorBought on the exchange200₩194,500₩38.9MDART ↗
2026-07-13Choi Gyu-manManaging directorBought on the exchange200₩197,500₩39.5MDART ↗
2026-07-13Yoon Min-sikManaging directorBought on the exchange100₩19,700,000₩2.0BDART ↗
2026-07-09Min Dae-hongManaging directorBought on the exchange101₩187,249₩18.9MDART ↗
2026-07-07Kaeyoung ShinVice presidentBought on the exchange111₩188,000₩20.9MDART ↗
2026-07-03Noh Gwang-binManaging directorBought on the exchange100₩195,800₩19.6MDART ↗
2026-07-03Yeo Hyeong-minVice presidentBought on the exchange500₩190,000₩95.0MDART ↗
2026-07-02CHANG YONG MINManaging directorBought on the exchange111₩205,500₩22.8MDART ↗
2026-07-01Hwang Su-yeongVice presidentBought on the exchange250₩190,800₩47.7MDART ↗
2026-07-01Park Il-uManaging directorBought on the exchange250₩195,500₩48.9MDART ↗
2026-07-01Kim Eun-yeongVice presidentBought on the exchange200₩191,500₩38.3MDART ↗
2026-06-30Kim Seung-jinManaging directorBought on the exchange100₩191,304₩19.1MDART ↗
2026-06-30Hong Gi-yeongManaging directorBought on the exchange120₩191,200₩22.9MDART ↗
2026-06-30Soonmin BaeManaging directorBought on the exchange100₩190,000₩19.0MDART ↗
2026-06-30Noh HyeonManaging directorBought on the exchange101₩193,500₩19.5MDART ↗
2026-06-30Kim Geung-hwanManaging directorBought on the exchange100₩192,900₩19.3MDART ↗
2026-06-30Moon Gwan-hwiManaging directorBought on the exchange120₩194,053₩23.3MDART ↗
2026-06-29Baek Chang-hyeonManaging directorBought on the exchange100₩193,300₩19.3MDART ↗
2026-06-29Seo Jin-uManaging directorBought on the exchange50₩197,600₩9.9MDART ↗
2026-06-29Kim, Hyun sungManaging directorBought on the exchange200₩192,500₩38.5MDART ↗
2026-06-29Kim Tae-hoVice presidentBought on the exchange520₩191,299₩99.5MDART ↗
2026-06-29Lee Dong-seopManaging directorBought on the exchange100₩190,000₩19.0MDART ↗
2026-06-29Kim Sang-yongVice presidentBought on the exchange520₩193,254₩100.5MDART ↗
2026-06-29Kim Jong-pilVice presidentBought on the exchange500₩197,400₩98.7MDART ↗
2026-06-29Hong Seong-cheonManaging directorBought on the exchange160₩191,500₩30.6MDART ↗
2026-06-29LEE HOJOONVice presidentBought on the exchange318₩194,398₩61.8MDART ↗
2026-06-29Shin Chang-minManaging directorBought on the exchange45₩192,998₩8.7MDART ↗
2026-06-26Ahn Dae-jungVice presidentBought on the exchange100₩192,500₩19.2MDART ↗
2026-06-26Ahn Dae-jungVice presidentBought on the exchange100₩198,000₩19.8MDART ↗
2026-06-26Ahn Dae-jungVice presidentBought on the exchange31₩186,000₩5.8MDART ↗
2026-06-26Park In-seokManaging directorBought on the exchange100₩192,875₩19.3MDART ↗
2026-06-26Park In-seokManaging directorBought on the exchange100₩193,900₩19.4MDART ↗
2026-06-26Kim Eun-yeongVice presidentBought on the exchange500₩204,500₩102.2MDART ↗
2026-06-26Moon Sin-jeongManaging directorBought on the exchange100₩191,900₩19.2MDART ↗
2026-06-26Kim Beom-suVice presidentBought on the exchange100₩198,900₩19.9MDART ↗
2026-06-26LEE HOJOONVice presidentBought on the exchange237₩190,000₩45.0MDART ↗
2026-06-26Jupyung LeeManaging directorBought on the exchange111₩198,000₩22.0MDART ↗
2026-06-26Kim Jeong-ukVice presidentBought on the exchange150₩184,500₩27.7MDART ↗
2026-06-26Kim Seung-giManaging directorBought on the exchange100₩190,900₩19.1MDART ↗
2026-06-26Shin Chang-minManaging directorBought on the exchange55₩190,300₩10.5MDART ↗
2026-06-26Choi Gyu-hwangManaging directorBought on the exchange100₩204,000₩20.4MDART ↗
2026-06-26Kim Chang-minManaging directorBought on the exchange200₩194,607₩38.9MDART ↗
2026-06-26Han Sang-wonManaging directorBought on the exchange111₩192,100₩21.3MDART ↗
2026-06-26Kim Seong-gonManaging directorBought on the exchange100₩184,500₩18.4MDART ↗
2026-06-26Kim Hak-gilManaging directorBought on the exchange500₩190,000₩95.0MDART ↗
2026-06-25Kim Jeong-ukVice presidentBought on the exchange50₩189,800₩9.5MDART ↗
2026-06-25Han Ho-jeonManaging directorBought on the exchange100₩190,500₩19.1MDART ↗
2026-06-25Lee Tae-huiVice presidentBought on the exchange500₩197,348₩98.7MDART ↗
2026-06-24Park sok hwanManaging directorBought on the exchange37₩187,865₩7.0MDART ↗
2026-06-24Kim MinManaging directorBought on the exchange100₩191,300₩19.1MDART ↗
2026-06-23Park sok hwanManaging directorBought on the exchange114₩197,228₩22.5MDART ↗
2026-06-23Min Dae-hongManaging directorBought on the exchange100₩191,600₩19.2MDART ↗
2026-06-16Kaeyoung ShinVice presidentBought on the exchange111₩188,000₩20.9MDART ↗
2026-06-15Soonmin BaeManaging directorBought on the exchange34₩243,000₩8.3MDART ↗
2026-05-20Min Dae-hongManaging directorBought on the exchange100₩161,900₩16.2MDART ↗
2026-05-20Kim MinManaging directorBought on the exchange100₩164,000₩16.4MDART ↗
2026-04-24LEE HOJOONVice presidentBought on the exchange333₩171,600₩57.1MDART ↗
2026-04-23Lee Jun-huiPresidentBought on the exchange100₩178,600₩17.9MDART ↗
2026-04-23GUM KI HOVice presidentBought on the exchange500₩173,500₩86.8MDART ↗
2026-02-26Lee Sang-ukVice presidentBought on the exchange25₩190,000₩4.8MDART ↗
2026-02-05Lee Tae-huiVice presidentBought on the exchange255₩171,466₩43.7MDART ↗
2026-02-04Lee Tae-huiVice presidentBought on the exchange45₩171,500₩7.7MDART ↗
2026-01-23Lee Jun-huiPresidentBought on the exchange100₩174,600₩17.5MDART ↗
2026-01-22Lee Jae-jinOutside directorBought on the exchange100₩170,600₩17.1MDART ↗
2026-01-22YI, INSILLOutside directorBought on the exchange100₩170,400₩17.0MDART ↗
2026-01-22MOON, MOOILOutside directorBought on the exchange100₩170,400₩17.0MDART ↗
2026-01-22SHIN, HYUNHANOutside directorBought on the exchange100₩170,400₩17.0MDART ↗
2025-10-23Lee Jae-jinOutside directorBought on the exchange100₩165,000₩16.5MDART ↗
2025-10-23YI, INSILLOutside directorBought on the exchange100₩165,200₩16.5MDART ↗
2025-10-23MOON, MOOILOutside directorBought on the exchange100₩166,100₩16.6MDART ↗
2025-10-23SHIN, HYUNHANOutside directorBought on the exchange100₩166,000₩16.6MDART ↗
Other changes in holdings · 25

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

DateInsiderRoleReasonSharesFiling
2026-07-23Jung Yeong-hunManaging directorOthers(+)56DART ↗
2026-07-09Ahn Dae-jungVice presidentOthers(+)57DART ↗
2026-07-02Jung U-yongManaging directorOthers(+)98DART ↗
2026-07-01Kim Tae-hoVice presidentAcquisition in exchange(+)520DART ↗
2026-06-18Kaeyoung ShinVice presidentAcquisition in exchange(+)0DART ↗
2026-06-16Soonmin BaeManaging directorNew appointment(+)66DART ↗
2025-11-25Hong Gi-yeongManaging directorNew appointment(+)650DART ↗
2025-11-17National Pension Service10% shareholderDisposal in exchange(-)46,058DART ↗
2025-11-14National Pension Service10% shareholderAcquisition in exchange(+)2,961DART ↗
2025-11-14National Pension Service10% shareholderDisposal in exchange(-)7,472DART ↗
2025-11-13National Pension Service10% shareholderAcquisition in exchange(+)8,716DART ↗
2025-11-13National Pension Service10% shareholderDisposal in exchange(-)3,089DART ↗
2025-11-12National Pension Service10% shareholderAcquisition in exchange(+)28,210DART ↗
2025-11-12National Pension Service10% shareholderDisposal in exchange(-)14,282DART ↗
2025-11-11National Pension Service10% shareholderAcquisition in exchange(+)2,890DART ↗
2025-11-11National Pension Service10% shareholderDisposal in exchange(-)677DART ↗
2025-11-10National Pension Service10% shareholderAcquisition in exchange(+)7,338DART ↗
2025-11-10National Pension Service10% shareholderDisposal in exchange(-)18,182DART ↗
2025-11-07National Pension Service10% shareholderNew report(+)7,728,206DART ↗
2025-11-07National Pension Service10% shareholderNew major shareholders(+)26,400DART ↗
2025-11-07National Pension Service10% shareholderDisposal in exchange(-)71DART ↗
2024-12-06Noh Gwang-binManaging director기타(+)0DART ↗
2024-12-02Noh Gwang-binManaging director신규선임(+)21DART ↗
2024-12-02Lee Dong-seopManaging director신규선임(+)284DART ↗
2024-12-02Lee Gwan-huiManaging director신규선임(+)100DART ↗