Korean Stock Flows

SD Biosensor (KRX: 137310)

에스디바이오센서 KOSPI Biotech & Pharma 의료용 기기 제조업
Close (Oct 13, 2026)
₩6,700
+2.45%
Market cap
₩1T ($0.6B)
52-week range
₩5,800 – ₩10,190
P/E (trailing) · P/B · Div yield
– · 0.34 · 2.99%

Who is buying SD Biosensor?

Between Sep 10, 2026 and Oct 13, 2026 (20 trading sessions), foreign investors net bought ₩1.1bn ($1M) of SD Biosensor, the 119th largest foreign net purchase among 832 KOSPI stocks. Institutions net bought ₩0.0bn ($0M) and retail investors net sold ₩0.8bn ($1M) over the same window. Foreigners were net buyers on 14 of the 20 sessions.

Foreign investors hold 6.1% of SD Biosensor's listed shares (KRX ownership data as of Oct 13, 2026), up from 5.96% twenty sessions earlier and 6.46% a year ago.

The stock closed at ₩6,700 on Oct 13, 2026: +8.41% over 20 sessions, -24.72% year-to-date, -30.71% over one year. The 52-week range is ₩5,800 – ₩10,190.

SD Biosensor share price, last 60 trading days (KRW)
6,912 6,527 6,143 5,758 Jul 13 Aug 26 Oct 13
Daily foreign investor net purchases, last 60 trading days
+0.9bn +0.5bn -0.5bn -0.9bn Jul 13 Aug 26 Oct 13
View chart data as a table
Date Close Foreign net Institutions Retail
2026-10-13 ₩6,700 +₩0.1bn +₩0.2bn ₩-0.3bn
2026-10-12 ₩6,540 +₩0.0bn +₩0.2bn ₩-0.3bn
2026-10-08 ₩6,410 ₩-0.1bn ₩-0.3bn +₩0.3bn
2026-10-07 ₩6,850 ₩-0.3bn ₩-0.0bn +₩0.3bn
2026-10-06 ₩6,430 +₩0.3bn +₩0.1bn ₩-0.4bn
2026-10-02 ₩6,340 +₩0.1bn +₩0.1bn ₩-0.1bn
2026-10-01 ₩6,310 +₩0.5bn +₩0.0bn ₩-0.4bn
2026-09-30 ₩6,130 +₩0.0bn ₩-0.0bn ₩-0.0bn
2026-09-29 ₩6,100 ₩-0.2bn ₩-0.0bn +₩0.2bn
2026-09-28 ₩6,110 +₩0.3bn +₩0.0bn ₩-0.3bn
2026-09-23 ₩6,070 ₩-0.3bn ₩-0.0bn +₩0.3bn
2026-09-22 ₩6,110 ₩-0.2bn ₩-0.0bn +₩0.2bn
2026-09-21 ₩6,150 +₩0.1bn +₩0.1bn ₩-0.1bn
2026-09-18 ₩5,970 ₩-0.4bn +₩0.1bn +₩0.4bn
2026-09-17 ₩6,160 +₩0.0bn +₩0.0bn ₩-0.0bn
2026-09-16 ₩6,160 +₩0.0bn ₩-0.0bn ₩-0.0bn
2026-09-15 ₩6,190 +₩0.1bn ₩-0.1bn ₩-0.1bn
2026-09-14 ₩6,210 +₩0.2bn +₩0.1bn ₩-0.2bn
2026-09-11 ₩6,160 +₩0.1bn ₩-0.1bn ₩-0.0bn
2026-09-10 ₩6,100 +₩0.7bn ₩-0.5bn ₩-0.3bn
2026-09-09 ₩6,180 +₩0.1bn ₩-0.0bn ₩-0.1bn
2026-09-08 ₩6,140 ₩-0.1bn +₩0.1bn +₩0.0bn
2026-09-07 ₩6,170 ₩-0.2bn +₩0.1bn +₩0.1bn
2026-09-04 ₩6,160 +₩0.1bn +₩0.1bn ₩-0.1bn
2026-09-03 ₩6,180 +₩0.5bn +₩0.1bn ₩-0.6bn
2026-09-02 ₩6,030 ₩-0.4bn ₩-0.1bn +₩0.5bn
2026-09-01 ₩6,190 +₩0.1bn ₩-0.1bn +₩0.0bn
2026-08-31 ₩6,120 ₩-0.2bn ₩-0.1bn +₩0.3bn
2026-08-28 ₩6,300 +₩0.5bn ₩-0.0bn ₩-0.4bn
2026-08-27 ₩6,040 ₩-0.9bn ₩-0.1bn +₩1.0bn
2026-08-26 ₩6,330 +₩0.2bn +₩0.1bn ₩-0.3bn
2026-08-25 ₩6,250 ₩-0.3bn +₩0.2bn +₩0.1bn
2026-08-24 ₩6,470 +₩0.2bn ₩-0.7bn +₩0.6bn
2026-08-21 ₩5,920 ₩-0.1bn ₩-0.1bn +₩0.2bn
2026-08-20 ₩5,940 ₩-0.3bn ₩-0.3bn +₩0.6bn
2026-08-19 ₩5,970 ₩-0.5bn ₩-0.1bn +₩0.6bn
2026-08-18 ₩6,150 ₩-0.8bn ₩-0.0bn +₩0.9bn
2026-08-14 ₩6,550 +₩0.1bn +₩0.0bn ₩-0.1bn
2026-08-13 ₩6,510 +₩0.1bn ₩-0.2bn +₩0.1bn
2026-08-12 ₩6,510 ₩-0.4bn ₩-0.2bn +₩0.6bn
2026-08-11 ₩6,790 +₩0.1bn ₩-0.0bn ₩-0.1bn
2026-08-10 ₩6,630 +₩0.4bn +₩0.1bn ₩-0.4bn
2026-08-07 ₩6,590 ₩-0.1bn +₩0.1bn +₩0.0bn
2026-08-06 ₩6,350 +₩0.1bn ₩-0.1bn +₩0.0bn
2026-08-05 ₩6,400 ₩-0.3bn ₩-0.1bn +₩0.5bn
2026-08-04 ₩6,580 +₩0.1bn ₩-0.0bn ₩-0.0bn
2026-08-03 ₩6,450 +₩0.2bn ₩-0.1bn ₩-0.1bn
2026-07-31 ₩6,350 +₩0.1bn ₩-0.0bn ₩-0.0bn
2026-07-30 ₩6,170 +₩0.2bn +₩0.0bn ₩-0.3bn
2026-07-29 ₩6,040 +₩0.1bn +₩0.3bn ₩-0.4bn
2026-07-28 ₩6,110 +₩0.2bn +₩0.1bn ₩-0.2bn
2026-07-27 ₩6,250 ₩-0.0bn +₩0.0bn ₩-0.0bn
2026-07-24 ₩6,160 +₩0.2bn ₩-0.0bn ₩-0.2bn
2026-07-23 ₩6,050 +₩0.3bn +₩0.1bn ₩-0.3bn
2026-07-22 ₩5,820 ₩-0.2bn ₩-0.1bn +₩0.2bn
2026-07-21 ₩5,990 ₩-0.4bn +₩0.0bn +₩0.3bn
2026-07-20 ₩6,190 ₩-0.1bn +₩0.2bn ₩-0.0bn
2026-07-16 ₩6,300 +₩0.0bn +₩0.0bn ₩-0.1bn
2026-07-15 ₩6,170 +₩0.2bn ₩-0.1bn ₩-0.1bn
2026-07-14 ₩5,990 +₩0.0bn +₩0.1bn ₩-0.1bn
2026-07-13 ₩6,310 +₩0.1bn +₩0.0bn ₩-0.2bn

Investor flows summary

Window Foreign (USD) Institutions Retail
1 day +₩0.1bn +$0M +₩0.2bn ₩-0.3bn
5 days +₩0.0bn +$0M +₩0.3bn ₩-0.3bn
20 days +₩1.1bn +$1M +₩0.0bn ₩-0.8bn

Positive = net buying, negative = net selling. Values aggregate the KRX main board and the NXT alternative venue.

Frequently asked questions

Are foreign investors buying SD Biosensor stock?

Over the last 5 sessions foreign investors net bought ₩0.0bn ($0M) of SD Biosensor; over 60 sessions they net sold ₩0.7bn ($1M); since Jan 1, 2026 they net sold ₩5.0bn ($4M). Over 20 sessions the stock is the 119th largest foreign net purchase among 832 KOSPI stocks.

How much of SD Biosensor do foreign investors own?

Foreign investors own 6.1% of SD Biosensor's shares as of Oct 13, 2026, versus 6.46% one year earlier. The figure is KRX's daily foreign holdings divided by listed shares, and it reflects trades settled through the previous session.

Who is on the other side — institutions or retail investors?

Over 20 sessions institutions net bought ₩0.0bn ($0M) and retail investors net sold ₩0.8bn ($1M) of SD Biosensor. Retail investors have been supplying the shares that foreigners and institutions are buying.

Is SD Biosensor listed on KOSPI or KOSDAQ?

SD Biosensor (에스디바이오센서) trades on KOSPI under KRX code 137310 in the Biotech & Pharma group, with a market capitalization of ₩1T ($0.6B). Daily net flows by investor type are published by KRX after each session and combine the KRX main board with the NXT venue.

Annual financials

Fiscal year Revenue YoY Operating profit Net income
2023 ₩656bn ($492M) – -₩248bn (-$186M) -₩468bn (-$351M)
2024 ₩695bn ($521M) +5.90% -₩54bn (-$41M) -₩98bn (-$74M)
2025 ₩711bn ($533M) +2.30% -₩81bn (-$61M) -₩513bn (-$385M)

Consolidated (K-IFRS) where available, from DART regulatory filings. USD figures converted at the current rate (₩1333.09/$) for reference only.

← All foreign investor flows