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What Investors Got Wrong Before SK Telecom's Rally

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SK Telecom entered 2026 with analysts split between a bullish AI and 5G expansion story on one side and worries about cyber fallout and heavy capital spending on the other. Holding SK Telecom from the start of the year would have returned 40.2%, including dividends. If you had bought then, you would be staring at that gain today and wondering a simple thing. Did the payoff come from business shifts that were already on record, or from risks that looked far more threatening at the time?

On Simply Wall St, a Narrative is an investor's thesis written down: the reasoning, plus the numbers it rests on. Run those numbers and you get an estimated Fair Value.

If the move has made SK Telecom harder to judge, start where the gap is still open and scan 195 high quality undervalued stocks .

The Two SK Telecom Stories Investors Had To Weigh

The shares cost ₩53,100, and SK Telecom investors were essentially choosing between two well-argued stories about the same business.

The bullish narrative put Fair Value at ₩78,000, framed around AI, 5G and security spending helping SK Telecom secure dominant regional market share and higher margin B2B opportunities.

The bearish view set Fair Value at ₩42,000 and focused on prolonged subscriber losses after the cybersecurity incident and heavy capital expenditure as risks to revenue growth and long-term profitability.

KOSE:A017670 Trailing 12-Month Earnings & Revenue History as at Oct 2026
KOSE:A017670 Trailing 12-Month Earnings & Revenue History as at Oct 2026

What The Results Changed For The SK Telecom Case

The clearest new fact was SK Telecom's Q2 2026 earnings. Net income excluding extra items moved from ₩84,688m in Q2 2025 to ₩465,673m, and net margin shifted from 2.0% to 10.7% while revenue stayed broadly flat around ₩4,338,760m to ₩4,359,057m. Profitability progress supported the optimistic thesis, although the modest revenue change kept the cautious story alive. Overall, the evidence cut both ways.

The main lesson is simple. When a bullish pitch rests on margin expansion, treat net income and net margin as the claims to test against later filings, especially if sales hardly move.

What SK Telecom's Price Already Bakes In

SK Telecom now trades at ₩73,500, with this selected Narrative putting Fair Value below that level. The gap reflects concern that AI and data centers might not fully repair telecom profitability.

Anyone paying today's price is effectively assuming AI driven services and efficiency gains cover the profit hole. The question is how the costs of customer recovery and tariff concessions affect that outcome.

"Although SK Telecom reported handset net additions and quarterly operating income approaching pre-incident levels in early 2026, management already concedes that 2026 mobile network revenue is unlikely to return to pre-incident levels. This points to a future where subscriber churn and tariff concessions keep core service revenue structurally lower and limit earnings recovery."

One Narrative has put a figure on that disagreement. → See the Narrative with its lower Fair Value, assumptions and all

Looking One Step Beyond SK Telecom

SK Telecom raises one question for you. Where else are similar connectivity pressures showing up?

Telecom groups worldwide are also leaning on faster broadband and next generation mobile networks. They need those platforms to keep customers using more data heavy services.

One large operator has pushed hard into fixed wireless and fiber lines. It is pairing that with offers built around simplicity to keep churn contained.

Enterprise buyers lean on the same provider for private networks and AI focused links. That mix of broadband reach, data traffic and cost control could reshape what counts as a steady telecom story next.

One Narrative has already put a figure on it. → Uncover the company trading 15% below one Narrative's Fair Value

This article by Simply Wall St is general in nature. We provide commentary based on historical data and analyst forecasts only using an unbiased methodology and our articles are not intended to be financial advice. It does not constitute a recommendation to buy or sell any stock, and does not take account of your objectives, or your financial situation. We aim to bring you long-term focused analysis driven by fundamental data. Note that our analysis may not factor in the latest price-sensitive company announcements or qualitative material. Simply Wall St has no position in any stocks mentioned.

Companies discussed in this article include 017670 .

Have feedback on this article? Concerned about the content? Get in touch with us directly. Alternatively, email editorial-team@simplywallst.com

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