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JONBUR Research · Update note

Samsung E&A · 028050 · Engineering services

Samsung E&A shares jump 31.3% in five days after Q3 profit surge and buyback news

Why this report

Written after:

  • Big price moveShares up 31.3% over 5 trading days on 2.0× normal volumeOct 22, 2026

Samsung E&A shares rose 31.3% over five trading days to 2026-10-22 on about 2.0 times normal volume, following the Q3 results and buyback announcement covered in our previous report. The move takes the price above the model's base estimate, while the thesis points on cash flow and backlog remain unresolved.

Written Oct 23, 2026 · Data as of Oct 22, 2026 · 0 views

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

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What happened

The share price closed at ₩55,400 on 2026-10-22, up 31.3% from 2026-10-16, with volume about 2.0 times normal. Market cap is now ₩10.86T. Over one year the shares are up 95.1%, and the 52-week range is ₩23,150 to ₩67,300. The move coincided with filings on 2026-10-22: preliminary Q3 earnings, a share buyback decision and a share cancellation decision. Per the previous report, Q3 operating profit was ₩500.6B, up 183.6% from a year earlier, and the buyback was ₩780.0B. Press headlines that day mention the earnings surprise, shareholder returns and several brokers raising their own targets. Filing excerpts were not available for this note. Foreign ownership is 37.7%, versus 38.7% sixty days ago. Over 20 days, institutions were net buyers of ₩139.2B and foreigners of ₩49.2B, while retail investors were net sellers of ₩186.9B. Short balance is 0.2%.

What it changes for the thesis

The previous report said earnings had partly caught up with the share price, and the price move now extends the re-rating further. The thesis is otherwise unchanged. Operating profit strength and the buyback were already in that report. Cash flow was negative on the last data (trailing free cash flow of -₩237.6B), and backlog and order data are still not available to us. Pre-tax profit growth lagging operating profit growth also remains a caution until full results are filed. The price move adds no new fundamental information. It shows how strongly the market has reacted.

What it changes for the valuation

The model now gives a model estimate based on the assumptions shown, from a discounted cash flow at an 8.6% rate using trailing data to H1 2026: bear ₩45,380, base ₩63,321, bull ₩91,705 per share. The previous report had bear ₩45,714, base ₩63,992, bull ₩93,035 at 8.5%, so the range is slightly lower, mainly from the small rate change. The price of ₩55,400 is now above the bear value and below the base, closer to the base than the ₩47,700 in the previous report. The model still excludes Q3 results and the buyback. P/E has risen to 16.4 from 14.1 and P/B to 2.2 from 1.9. The range remains wide.

Closing view

The share price has moved a long way in a short time, and it has absorbed most of the gap to the model's base estimate. The fundamental news, strong Q3 operating profit and a sizeable buyback, is real but was already assessed in the previous report. The open points are the same: negative free cash flow, no backlog data, preliminary figures and a model that predates the quarter. Higher multiples mean more of the good news is now reflected in the price. Final results, cash flow data and buyback execution will show whether the earnings support it.

Model estimate of fair value

Bear
₩45,380
-29%
Base
₩63,321
-1%
Bull
₩91,705
+43%

Model estimate based on the assumptions shown. Not a price target and not a buy or sell signal.

Base case of the 5-year discounted cash flow model on the stock's Valuation tab (statements TTM to H1 2026; discount rate 8.6%). Bear and Bull move the main assumptions by fixed steps. See and change the assumptions

Filings and data used

Report history

  1. Oct 23, 2026Update noteBig price moveSamsung E&A shares jump 31.3% in five days after Q3 profit surge and buyback news
  2. Oct 22, 2026Update noteBuyback / dividend / value-up · EarningsSamsung E&A: Q3 Operating Profit Up 183.6% and ₩780.0B Buyback Announced
  3. Oct 13, 2026InitiationSamsung E&A: Shares Up Sharply Over a Year as Earnings Soften and Multiples Expand

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