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On 16 October 2026, NICE CompanySearch showed a close of KRW 2,175 and a KRW 25 increase. StockAnalysis showed a KRW 2,320 close for 23 September 2026. Those figures describe different sessions, so they are not an error to reconcile by averaging; they must be labeled with their dates and data definitions.
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Identify the exact security before reading a quote
Ticker confusion is the first source of bad analysis. The security covered here is:
| Item | What to record |
|---|---|
| Issuer | SHINWON CONSTRUCTION CO., LTD. (신원종합개발) |
| Ticker | 017000 |
| Market | KOSDAQ, South Korea |
| Currency | South Korean won (KRW) |
| Security type | Common shares |
Use the ticker, market and currency together when searching a data service. A number shown without those labels can be mistaken for another company, a different share class, or a price converted into another currency. Korean trading sessions are dated by the local market session, so write the session date beside every observation rather than relying on the time at which a website was viewed.
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A quote page may be delayed. KRX market displays can be 20 minutes delayed, while a historical table may be updated only after the session is complete. Treat the retrieval time and the session date as separate fields in your notes.
Read a daily OHLC table in the right order
A daily record normally contains open, high, low and close (OHLC), plus a change percentage and volume. Read the date first, then the four prices, then the comparison and activity measures.
| Field | Meaning | How to use it |
|---|---|---|
| Open | First traded price recorded for that session | Shows the session’s starting level, not necessarily the previous close |
| High | Highest traded price in the session | Defines the top of the intraday range |
| Low | Lowest traded price in the session | Defines the bottom of the intraday range |
| Close | Final traded price in the daily record | Use for close-to-close comparisons |
| Change % | Percentage difference between the close and the prior reference close | Check the reference close and whether the field is raw or adjusted |
| Volume | Number of shares traded during the session | Compare with the stock’s own baseline and the size of the price move |
A worked record
StockAnalysis, using S&P Global Market Intelligence data, listed this 23 September 2026 record:
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| Date | Open | High | Low | Close | Volume |
|---|---|---|---|---|---|
| 23 September 2026 | KRW 2,330 | KRW 2,355 | KRW 2,295 | KRW 2,320 | 17,462 shares |
The intraday range was KRW 60 (2,355 minus 2,295). The close was KRW 25 above the low, placing it about 41.7% of the way from the low to the high. That describes where trading finished within that day’s range; it does not establish the next day’s direction or explain why buyers and sellers acted.
Raw close versus adjusted close
StockAnalysis supplies an adjusted close and notes that its historical prices are adjusted for stock splits. A chart using adjusted close can therefore differ from a table showing the unadjusted, or raw, close. Use raw closes when you need the price actually recorded in a particular session; use an adjusted series for a long-term return chart when the provider’s adjustment methodology is appropriate. Label the choice in a spreadsheet or chart title. Never compare a raw close on one service with an adjusted close on another and call the difference a market move.
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Why two websites can show different prices
Different numbers are often correct because they describe different observations. The most important checks are:
| Check | Question to ask | What a mismatch means |
|---|---|---|
| Session date | Are both rows for the same Korean trading session? | A newer or older close is not a contradiction |
| Raw or adjusted | Has either series been adjusted for a split? | Historical levels may be restated |
| Field definition | Is the number a last price, official close, or indicative quote? | Intraday and end-of-day values are different fields |
| Delay and refresh | Was one page delayed or captured before the session settled? | Displayed status can lag the exchange |
| Currency and units | Are both values in KRW per common share? | Conversion or unit errors can create large apparent gaps |
| Session and timezone | Did a date boundary shift the displayed day? | A local evening or overnight timestamp can label the wrong session |
NICE CompanySearch’s 16 October 2026 snapshot reported a KRW 2,175 close and a KRW 25 increase. The StockAnalysis row above is dated 23 September 2026 and closes at KRW 2,320. The 23-day difference is sufficient to explain the different levels without alleging a data error. When comparing sites, put their dates, adjustment status and retrieval times in adjacent columns before investigating anything more complicated.
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Volume is the count of shares that changed hands during a session. It is not the number of investors, the value traded, or a measure of profit. Investing.com displayed an average daily volume of 17,773 shares for its stated period. That average is a reference point, not a permanent normal level.
Shinwon Construction’s own history demonstrates why a baseline matters. StockAnalysis recorded 3,135 shares on 17 September 2026 and 249,250 shares on 13 August 2026. The latter is roughly 14 times the 17,773-share displayed average; the former is about 18% of it. Such differences indicate that a “high-volume” label must be tied to a stated comparison period.
Combine volume with the price move
| Price action | Volume relative to baseline | Careful interpretation |
|---|---|---|
| Price rises | Unusually high | More participation accompanied the rise; this can make the move more informative than the same rise on very low volume, but it does not prove a cause or future return |
| Price rises | Unusually low | The move occurred with limited trading; liquidity and a small number of trades may have had a larger effect |
| Price falls | Unusually high | Many shares traded during the decline; investigate disclosures and investor-flow data before assigning a reason |
| Price falls | Unusually low | A thin session can produce a large-looking percentage change without broad participation |
| Little price change | Unusually high | Active two-sided trading may have absorbed buying and selling pressure near the same level |
These are interpretation heuristics, not evidence that volume causes a return. For liquidity, transaction value is also useful: shares traded alone can make a low-priced stock look more active than a higher-priced stock with the same share count. If the source provides transaction value, record it beside volume.
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A verification workflow for 017000 history
Use the exchange first, then use vendor tables for convenience and cross-checking.
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One free scan finds every outdated or missing driver and matches the right update for your exact hardware.Free scan · exact hardware match- Open KRX Data Marketplace. Choose the KOSDAQ individual-security price-history area. The marketplace also exposes investor-trading, volume and transaction-value datasets.
- Enter 017000. Confirm that the returned issuer is SHINWON CONSTRUCTION CO., LTD. and that the market is KOSDAQ.
- Set the exact interval and frequency. Select daily data when building an OHLC history, and write the first and last session dates in your notes.
- Record the data conventions. Save KRW as the currency, the Korean session date and timezone, whether the series is raw or adjusted, and whether the display is delayed.
- Capture the complete row. Keep open, high, low, close, change percentage, volume and transaction value when available. Do not retain only the headline close.
- Compare the close correctly. Calculate the absolute close-to-close change and percentage change against the immediately preceding session in the same series. Do not substitute the open for the prior close.
- Measure the day’s range. Subtract low from high. For a location measure, calculate (close − low) ÷ (high − low), while noting that a zero range makes that ratio undefined.
- Choose a volume baseline. A rolling average from the same source and interval is preferable. Compare both the share count and transaction value when possible.
- Check disclosures. Review issuer announcements through KRX-linked channels before attributing a price or volume change to news, a financing event or another corporate action.
- Preserve the retrieval timestamp. Market status, delayed quotes and vendor histories can change; a timestamp lets another reader reproduce the observation.
KOSDAQ rules that change how a move looks
KRX states that KOSDAQ quote increments range from KRW 1 to KRW 100 depending on the price level. A one-tick move therefore does not represent the same percentage at every share price. At KRW 2,175, a KRW 1 increment is about 0.046%; at a much higher price, the same KRW 1 tick is proportionally smaller.
KRX also describes daily price fluctuations as usually limited to plus or minus 15% from the previous close and explains volatility-interruption cooling periods. A chart can consequently show a move approaching a limit, a pause, and then resumed trading rather than one uninterrupted sequence of trades. When a sharp move appears, check whether a limit or volatility interruption affected the session before treating the shape as ordinary momentum.
Record the current context beside any chart
NICE CompanySearch’s snapshot dated 16 October 2026 supplied the following context:
| Metric | Reported value | Qualification |
|---|---|---|
| Close | KRW 2,175 | Snapshot dated 16 October 2026 |
| Daily change | +KRW 25 | Change shown by the same snapshot |
| 52-week high | KRW 4,470 | Window and date are those of the 16 October snapshot |
| 52-week low | KRW 1,975 | Window and date are those of the 16 October snapshot |
| Market capitalization | KRW 25.4 billion | Snapshot value; market capitalization changes with price |
| Common shares | 11,668,027 | Share count reported by NICE |
| Foreign ownership | 3.81% | Snapshot ownership figure |
| PER | 5.67 | Reported ratio, not a forecast |
| PBR | 0.31 | Reported ratio, not a valuation conclusion |
| EPS | KRW 494 | Reported earnings-per-share figure |
| BPS | KRW 9,170.16 | Reported book-value-per-share figure |
| Volume | 15,308 shares | Volume shown in the same NICE snapshot |
These numbers describe the company and the quoted snapshot; they do not by themselves establish that the shares are cheap, expensive, liquid or suitable for a particular investor. Ratios can use different reporting periods and accounting conventions, so identify the provider and date when placing them beside a price chart.
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Build a history that remains auditable
A simple worksheet prevents most comparison mistakes. Use one row per Korean trading session and keep these columns:
- Session date and retrieval timestamp
- Ticker, issuer and market
- Currency and price unit
- Open, high, low and close
- Raw or adjusted-series flag
- Absolute and percentage close-to-close change
- Volume and, when available, transaction value
- Rolling volume baseline and the ratio of session volume to that baseline
- Notes for a KRX disclosure, price limit or volatility interruption
For example, the 23 September row can retain the KRW 60 range and 17,462-share volume, while the 17 September and 13 August rows preserve the 3,135- and 249,250-share observations used to explain activity differences. Do not overwrite an old value when a vendor revises a record; retain the original retrieval timestamp and add a note describing the revision.
Common reading errors and their fixes
Using a headline quote without a date
Problem: A “current price” card may be delayed or may have refreshed after the historical table was downloaded.
Fix: Record the Korean session date, retrieval time and delay status beside the price.
Mixing adjusted and raw series
Problem: A split-adjusted chart is compared with an unadjusted historical close.
Fix: Use one convention for the entire comparison and label it explicitly.
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Calling any large volume number a spike
Problem: A share count is judged without a baseline, or a high share count is mistaken for high liquidity.
Fix: Compare with a same-source rolling average and inspect transaction value.
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Inferring a cause from the tape alone
Problem: A rise, fall or volume surge is attributed to a rumor or announcement without checking filings.
Fix: Review KRX-linked issuer disclosures and state when the cause is not established.
Ignoring KOSDAQ limits and pauses
Problem: A move near 15% or a gap in the chart is read as uninterrupted trading.
Fix: Check the applicable price limit and any volatility-interruption cooling period.
Comparing unlike dates as if they were simultaneous
Problem: The 16 October NICE close is placed beside the 23 September StockAnalysis close without labels.
Fix: Put each source’s date in the table and compare the same session before discussing discrepancies.
A practical decision checklist
Before drawing a conclusion from a Shinwon Construction chart or considering a trade, answer these questions:
- Does the row clearly identify KOSDAQ ticker 017000 and KRW?
- Is the quote tied to a completed Korean session, or is it delayed intraday data?
- Are open, high, low and close from the same date and the same adjustment convention?
- Is the percentage change measured against the immediately preceding close?
- How does volume compare with a stated rolling baseline, and what does transaction value show?
- Did a KRX price limit, volatility interruption or issuer disclosure affect the session?
- Are the 52-week, ownership and valuation figures labeled with their provider and as-of date?
If any answer is missing, the observation is incomplete rather than automatically wrong. Correct labeling turns a single price into a reproducible record and makes differences between data services understandable.
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