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JONBUR Research · Update note

Lunit · 328130 · Software

Lunit Shares Rise 15.7% in Five Days on Heavy Volume After Summit Collaboration News

Why this report

Written after:

  • Big price moveShares up 15.7% over 5 trading days on 2.1× normal volumeOct 27, 2026

Lunit's shares rose 15.7% over five trading days to October 27, 2026, on 2.1× normal volume, and headlines point to a collaboration with a US company. The move lifts the price but does not change the financial picture from the previous report, and the model still has no estimate.

Written Oct 28, 2026 · Data as of Oct 27, 2026 · 0 views

This is not financial advice. The report does not recommend buying or selling anything.

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What happened

From October 21 to October 27, 2026, the shares rose 15.7% on volume 2.1 times normal. The share price closed at ₩14,650 on October 27, giving a market value of about ₩1.09T. The 52-week range is ₩8,180 to ₩24,550.

News headlines link the move to a deal with Summit. Chosun Biz reported on October 26 that Lunit jumped 26% on KOSDAQ after a collaboration with a US company, and that Lunit is analyzing ibonecimab with Summit using AI. Edaily on October 27 said the deal lifted Korean medical AI stocks. No filing excerpts were provided, so deal terms, payments and revenue size are not available to us.

Over one month the shares are up 49.3%, and over three months up 59.8%, but still down 21.8% over one year. Over 20 days foreigners were net sellers of about ₩14.4B, institutions net buyers of about ₩19.5B and retail net sellers of about ₩2.1B. Foreign ownership fell to 7.8% from 12.6% 60 days ago. Short balance is 3.8%. Recent filings show repeated convertible bond acquisitions and conversion price adjustments, most recently on October 1 and 2.

What it changes for the thesis

The previous report, dated October 18, described fast revenue growth (53.4% in 2025) and narrowing losses, but no path to profit yet, plus uncertainty about dilution from convertible bonds. The rally does not change these facts. Trailing revenue is still ₩91.8B with an operating margin of -76.4%, and free cash flow is -₩53.3B.

What has changed is that the previous report could not explain the rebound, and headlines now point to the Summit collaboration. Whether it will add to revenue is unknown from the data. The buyer mix has also shifted: the earlier rebound was led by retail, while over the latest 20 days institutions are net buyers. Foreign selling continues.

What it changes for the valuation

The model still has no estimate for this company, as in the previous report, so there is no model estimate per share (bear, base or bull) to compare with the ₩14,650 close. Price-to-book rose to 3.3 from 2.7 and price-to-sales to 11.9 from 9.6, simply because the price moved up. P/E and EV/EBITDA are not available because earnings are negative. Enterprise value is about ₩1.00T.

The multiples remain below year-end 2025 price-to-book of 10.4. The profitable peers shown have price-to-book of 0.5 to 4.7 and P/E of 6.9 to 46.8, but they are not directly comparable.

Closing view

The evidence is mixed. A reported collaboration gives a plausible reason for the jump and adds a business catalyst the earlier report lacked. But no deal size, timing or revenue effect is available, losses and cash outflows persist, and convertible bond activity still leaves dilution uncertain. With no model estimate and no earnings-based multiple, the data cannot say whether the higher price is justified. The note rests on the price move and headlines, not on a new filing.

Model estimate of fair value

The valuation model has no estimate for this company yet (not enough data, or no positive value with the base case).

Filings and data used

Report history

  1. Oct 28, 2026Update noteBig price moveLunit Shares Rise 15.7% in Five Days on Heavy Volume After Summit Collaboration News
  2. Oct 18, 2026InitiationStart of coverage (reader request)Lunit: Revenue Growing Fast, Losses Persist, Shares Rebound 44.2% in a Month

Built only from jonbur's own data: prices and investor flows, filed financial statements and filings, and news headlines. Disclosed (filed) data is labelled as such. Written by AI and may contain mistakes.

This is not financial advice. The report does not recommend buying or selling anything.

Source: KRX statistical information