[Stock Consultation Investor Complaint Desk] Neosem among inspection equipment firms; checks SSD and CXL memory performance
Predicted impact: Low
Investor complaint desk feature on an equipment maker's product testing; no concrete corporate event.
Neosem네오셈
253590 · KOSDAQ · ₩253590 · 네오셈
₩17,130▲ ₩2,010 (13.29%)End-of-day · Oct 27, 2026 · End-of-day prices.
Price · 1Y +48.31%
- Market cap
- ₩751B
- Enterprise value
- ₩715B
- P/E
- 41.7×
- P/B
- 5.6×
- Dividend yield
- 0.6%
- ROE
- 13.5%
- Net margin
- 21.6%
Trailing 12 months from filed financial statements, as of H1 2026. Dividend yield: the 2025 dividend per share from the annual report ÷ today's price.
52-week range−20.0% from the high
₩6,700Today: ₩15,820 – ₩17,990₩21,400
Returns
- 1W+11.7%
- 1M+25.2%
- 3M+107.9%
- 6M−10.2%
- YTD+56.3%
- 1Y+48.3%
- Volume today
- 5,015,153
- 3.8× the 20-day average
- Traded today
- ₩87B
- Listed shares
- 43,869,164
- EPS (12 months)
- ₩411
- Earnings yield 2.4%
AI researchResearch being writtenOur AI is writing a report on this company from filed data, prices and news. Check back soon.
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Why is it moving?
+13.3% on Oct 27, 2026. Trading value 4.4× its normal.
Neosem is named among inspection equipment makers that check the performance of SSD and CXL memory chips. The source is a brief mention in a stock consultation feature and does not describe any new company event.
AI summary of the news and filings linked. It can be wrong; check them.
- • Foreign investors bought a net ₩4B that day
- • Buzz 68 on JONBUR: heavy trading
Possible reasons, not certainties. Not financial advice.
Signals
Warming up- BuzzRisingBuzz 68: heavy trading.
- MomentumStrong29.8% over the last month; the price is above its 20-day average.
- News impactLow1 news items and filings in two weeks; 0 rated high impact, 0 medium.
Signals describe activity, not recommendations. Not financial advice.
Leveraged ETF flows
Estimated leveraged-ETF rebalance on Oct 27: buy ₩224M at the close (1.2% of 20-day average trading value)
On its 33 biggest days of the last 60 (moves of 3%+), the estimated pressure averaged 1.2% of trading value and pointed the same way 9 of 33 times.
- 2× KODEX KOSDAQ150 Leverage ₩183M
- 2× TIGER KOSDAQ150 Leverage ₩22M
- -1× KODEX KOSDAQ150 Futures Inverse ₩13M
- 2× RISE KOSDAQ150 Futures Leverage ₩3.8M
Mostly via futures: index funds hedge with KOSPI 200 / KOSDAQ 150 futures, spread here over the index's largest members by market value.
Final after the close. An intraday "if the close were now" estimate needs real-time prices, which we don't have yet.
Estimate based on ETF size and daily moves; actual trades may differ.
ETFs holding this
All ETFs →Held by 11 funds.
- KODEX KOSDAQ1500.3%
- KODEX KOSDAQ150 Leverage2×0.3%
- TIGER KOSDAQ1500.3%
- RISE KOSDAQ1500.3%
- TIGER KOSDAQ150 Leverage2×0.3%
- ACE KOSDAQ 1500.3%
- KIWOOM KOSDAQ1500.3%
- SOL KOSDAQ1500.3%
Estimated from the funds' index or underlying stock.
Neosem stock overview
Neosem (네오셈, KRX: 253590) is listed on KOSDAQ, in the Machinery sector. The company, founded in April 2002, makes semiconductor back-end inspection equipment that tests the performance and reliability of memory chips during manufacturing. Its shares closed at ₩17,130 on Oct 27, 2026, up 13.29% on the day, giving it a market value of ₩751B.
Key facts
- Market cap
- ₩751B
- Sector
- Machinery
- Latest price change
- +13.29%
- As of
- Oct 27, 2026
- Main business
- The company, founded in April 2002, makes semiconductor back-end inspection equipment that tests the performance and reliability of memory chips during manufacturing.
Quick answers about Neosem
- What does Neosem do?
- The company, founded in April 2002, makes semiconductor back-end inspection equipment that tests the performance and reliability of memory chips during manufacturing. Its main businesses are SSD testers, which test complete storage products, and MBT (Monitoring Burn-in Tester) equipment, which applies harsh conditions to individual memory components such as DRAM and NAND. It also distributes overseas makers' assembly and particle detection machines, and serves major global semiconductor manufacturers in Korea and abroad.
- What is the market cap of Neosem?
- The market capitalisation of Neosem was ₩751B at the close on Oct 27, 2026.
- Who are the largest shareholders of Neosem?
- According to the latest official filings, the largest reported holders are Yeom Dong-hyun (51.78%, as of Sep 22, 2026); Bae Yun-young (10.13%, as of Aug 31, 2026); National Pension Service (0.33%, as of Dec 31, 2025).
- When is the next earnings report from Neosem?
- Korean companies rarely announce results dates in advance. Based on when Neosem filed the same report in past years, its next 3q results is expected between Nov 13, 2026 and Nov 14, 2026.
- Does the National Pension Service own Neosem?
- Yes. The National Pension Service held 0.33% of Neosem shares as of Dec 31, 2025.
Company profile
The company, founded in April 2002, makes semiconductor back-end inspection equipment that tests the performance and reliability of memory chips during manufacturing. Its main businesses are SSD testers, which test complete storage products, and MBT (Monitoring Burn-in Tester) equipment, which applies harsh conditions to individual memory components such as DRAM and NAND. It also distributes overseas makers' assembly and particle detection machines, and serves major global semiconductor manufacturers in Korea and abroad.
Written by AI from the company's latest annual report.
- Korean name
- 네오셈
- Sector
- Machinery
- Themes
- Chip testing & packaging
- CEO
- 염동현
- Founded
- Sep 2016
- Listed
- Apr 2018
- Listed shares
- 43,869,164
- Fiscal year ends
- Month 12
- Website
- www.neosem.com
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Recent news
Recent filings
See all- Amended: Major sales or supply contractSep 28, 2026
- Amended: Major sales or supply contractSep 28, 2026
- 5%+ holding reportSep 22, 2026
- Insider shareholding reportSep 22, 2026
- 5%+ holding reportAug 31, 2026
Titles in Korean until English translations are added.
Also known as: Neosem / 네오셈 / 253590 / KRX:253590
Source: KRX statistical information