Samsung SDI just posted its worst year in a decade — revenue down 20%, a swing to a ₩1.72 trillion operating loss, dividends switched off for three years. So why is the stock up 64% in 2026? Because the market has stopped pricing the batteries Samsung SDI sold yesterday, and started pricing the ones it hopes to sell to AI data centers tomorrow.
- A loss-making champion trading on recovery. FY2025 revenue fell to ₩13.27tn (−20.0% YoY) and the company swung to a ₩1.72tn operating loss (Source: DART FY2025 consolidated filing). Yet the stock is +64.2% YTD at ₩431,000 — a ~$23.3B market cap (Source: KRX, as of Jul 27, 2026).
- The pivot is EV-out, ESS-in. Samsung SDI is redirecting US capacity from EV cells toward lithium-iron-phosphate (LFP) cells for grid and AI-data-center storage, anchored by a US ESS supply deal worth over ₩2tn starting 2027 (Source: Samsung SDI IR, Nov 2025).
- Korea’s #3, and slipping on EVs. In global EV batteries, CATL leads near ~40% while Samsung SDI’s Jan–Apr 2026 EV volume fell 28.6% YoY (Source: SNE Research). It sits behind CATL and LG Energy Solution.
- Governance is unwinding a cross-holding. To fund the pivot, Samsung SDI is selling its 15.22% Samsung Display stake for ~₩10tn — after a dilutive 2025 rights offering and a three-year dividend suspension drew shareholder backlash (Source: The Korea Herald).
🔋 What Does Samsung SDI Actually Make?
Samsung SDI is Korea’s third-largest battery maker, specializing in prismatic EV cells, cylindrical cells, and — increasingly — LFP cells for stationary energy storage. Unlike a pure EV-cell play, its portfolio spans three end-markets: electric-vehicle batteries (its prismatic cells power BMW and Audi), small cylindrical cells (power tools, and now backup power for data centers), and Energy Storage Systems (ESS) for utilities and AI facilities.
That mix matters right now. The EV leg is in a cyclical downturn, but the ESS leg is riding a structural rise in electricity demand. Samsung SDI is trying to lean into the second while the first heals — the same tightrope its larger rival is walking, which we cover in our LG Energy Solution valuation. Together, LG Energy Solution and Samsung SDI are two of Korea’s three battery champions (SK On is the third).
📉 The Numbers: A Genuine Cyclical Trough
FY2025 was the worst year in Samsung SDI’s recent history: revenue fell 20.0% and both operating and net lines turned negative. This is not a rough quarter — it is a full-year loss, and the honest starting point for any valuation.
| Metric (IFRS, consolidated) | FY2025 | FY2024 | YoY |
|---|---|---|---|
| Revenue | ₩13.27tn | ₩16.59tn | −20.0% |
| Operating income | −₩1.72tn | +₩0.36tn | swing to loss |
| Net income | −₩0.58tn | +₩0.58tn | swing to loss |
| Operating margin | −13.0% | 2.2% | −15.2pt |
| Total equity | ₩23.57tn | ₩21.57tn | +9.3% |
Source: DART FY2025 consolidated financial statements (KOSPI 006400), filed 2026. Figures via K-Export Stars Fact Layer, generated Jul 27, 2026.
🔌 Why Is the Stock Up If Earnings Collapsed?
The stock is up 64.2% YTD (as of Jul 27, 2026) because losses are narrowing fast and the ESS pivot is showing early traction, not because current earnings justify the price. In Q2 2026, the operating loss narrowed 64.2% YoY to ₩155.6bn (coincidentally close to the stock’s ~64% YTD gain — different figures, one is a share-price move, the other a loss-reduction rate) while revenue rose 12.6% to ₩3.58tn — the sixth straight quarterly loss, but a visibly shrinking one (Source: The Korea Herald, Jul 2026). Management is guiding to a return to profit in 2026.
The driver is demand from AI data centers and utilities. Battery revenue rose 13% YoY in Q2 2026 on recovering utility-scale ESS, data-center backup power, and premium cylindrical cells (Source: The Korea Herald, Jul 2026). Data centers need vast, reliable power buffering — the same structural tailwind lifting Korea’s other electrification names, like the nuclear-and-SMR story in our Doosan Enerbility valuation.
One caveat on the headline valuation: with FY2025 in the red, a trailing P/E is not meaningful. The 59.8x figure sometimes quoted (Source: KRX, as of Jul 27, 2026) is computed on the last positive year’s earnings (FY2024) and tells you almost nothing about today. Samsung SDI trades on recovery optionality, not on a current earnings multiple.
| Market snapshot | Value (as of Jul 27, 2026) |
|---|---|
| Share price | ₩431,000 (~$291.60) |
| YTD performance | +64.2% |
| 52-week range | ₩176,100 – ₩712,000 (−39.5% off high) |
| Market cap | ₩34.4tn (~$23.3B) |
| Foreign ownership | 26.4% |
Source: KRX / FinanceDataReader and Naver Finance foreign-flow data, via K-Export Stars Fact Layer, as of Jul 27, 2026. USD converted at ₩1,478/$.
⚔️ Samsung SDI vs LG Energy Solution vs CATL
Samsung SDI is the smallest of the three, and losing EV share — its edge is premium prismatic cells and a sharper ESS pivot, not scale. In global EV batteries, CATL sits near ~40% share, LG Energy Solution around the mid-teens, and Samsung SDI trails both; Samsung SDI’s Jan–Apr 2026 EV battery volume fell 28.6% YoY even as the overall market grew (Source: SNE Research, 2026).
| Maker | Global EV-battery standing | Positioning |
|---|---|---|
| CATL (China) | #1, ~40% share | Scale + LFP cost leader; the price-setter |
| LG Energy Solution (Korea) | Largest non-Chinese maker | Scale, 46-series cylindrical, broad OEM book |
| Samsung SDI (Korea) | #3 Korean; smaller, EV volume falling | Premium prismatic (BMW/Audi), ESS/LFP pivot, solid-state R&D |
Standings are approximate and directional (SNE Research, Jan–Apr 2026). Exact monthly shares move; treat as relative positioning, not precise share to the decimal.
Samsung SDI’s counter-move is to compete where it is not fighting CATL head-on: premium European EV cells, all-solid-state batteries (targeted for mass production later this decade), and US-made ESS cells that benefit from local-content manufacturing credits. Its Michigan subsidiary signed a multi-year LFP ESS supply deal worth over ₩2tn, shipping from 2027 (Source: Samsung SDI IR / energy-storage.news, Nov 2025).
🏛️ Governance & Shareholder Returns
Samsung SDI sits inside the Samsung group’s web of cross-holdings — Samsung Electronics is its largest shareholder (~19.6%, per DART major-shareholder filings / Korea Herald), and Samsung SDI in turn owned a 15.22% stake in Samsung Display. That second holding is the story of 2026: the company is selling the entire 15.22% Samsung Display stake for roughly ₩10tn to fund its ESS pivot and repair its balance sheet (Source: The Korea Herald, 2026). For once, a chaebol cross-shareholding is being unwound rather than defended — a rare, if pragmatic, simplification. It is worth reading alongside our primer on the Korea Discount, where opaque cross-holdings are a core culprit.
On shareholder returns, the recent record is poor — and that is the honest headline. To conserve cash, Samsung SDI ran a dilutive rights offering in 2025 (11.8 million new shares at ₩140,000, raising ~₩1.65tn) and suspended cash dividends entirely for 2025–2027 (Source: The Korea Herald / Smartkarma, 2025). The ₩1,000 per-share dividend and ~0.2% yield in our Fact Layer reflect the FY2024 payment (Source: DART); on current policy, holders should expect nothing until at least 2028. The rights offering drew “strong shareholder backlash,” which is partly why management chose the asset sale over another equity raise this time (Source: The Korea Herald).
The relationship with parent Samsung Electronics cuts both ways: strategic backing and captive group demand on one side, but the persistent question of whether minority holders or group priorities come first on the other. Investors weighing the Samsung complex should also see our Samsung Electronics valuation, the group’s anchor.
- The price war is structural. CATL’s LFP cost leadership (~40% global EV share) sets the floor; Korean makers compete into a commoditizing market where LFP ESS cells are increasingly a scale-and-cost game Samsung SDI does not lead.
- EV demand is still soft. Samsung SDI’s EV volume fell 28.6% YoY in Jan–Apr 2026 (SNE Research). The ESS leg is real, but it is being asked to offset a shrinking core.
- ESS margins are unproven at scale. Utility LFP is lower-margin than premium prismatic EV cells; a pivot toward volume ESS could cap profitability even as revenue recovers.
- Dilution and no dividend. The 2025 rights offering added ~11.8m shares; dividends are off until 2028. The ~₩10tn Display sale funds the pivot but removes a strategic asset — and its buyer/terms are undisclosed.
- The stock has already run. +64.2% YTD (as of Jul 27, 2026) prices in a lot of the turnaround before the company has printed a single profitable quarter in six.
📚 Lingo Check
| Term | What it means |
|---|---|
| ESS (Energy Storage System) | Large stationary battery installations that store electricity for the grid, utilities, or data-center backup — 에너지저장장치. The demand engine behind Samsung SDI’s pivot. |
| LFP cell | Lithium-iron-phosphate battery chemistry — cheaper, safer, longer-cycle, lower energy density. Dominant in ESS and China; 리튬인산철. |
| Prismatic cell | A battery cell in a rigid rectangular case that packs densely into modules; Samsung SDI’s premium EV format (BMW, Audi). 각형 배터리. |
| Rights offering | Issuing new shares to existing holders to raise cash — dilutive to those who don’t buy in. 유상증자. |
| Cross-shareholding | One group company owning shares in another, entrenching control and obscuring value — a core Korea Discount driver. 순환출자 / 상호출자. |
| All-solid-state battery | Next-gen cell replacing liquid electrolyte with a solid one — higher energy density and safety; Samsung SDI targets mass production later this decade. 전고체 전지. |
🎯 Why It Matters for K-Export Stars
Samsung SDI is a clean test of a bigger idea on this site: Korea’s export champions are re-tooling from the last decade’s growth engines toward electrification and AI-infrastructure demand. The battery leg of that shift runs through two Seoul-listed giants — Samsung SDI and LG Energy Solution — plus the power-generation names supplying the same data centers. Reading the actual DART filings shows what web summaries miss: this is a loss-making company funding a strategic pivot by diluting holders and selling a group cross-holding. That combination — real technology, genuine tailwind, but poor near-term shareholder treatment — is exactly the Korea nuance a global investor needs before buying the 64% rally.
Conclusion
Samsung SDI is a recovery bet, not a value or income one. The bull case is concrete: ESS and AI-data-center demand are lifting revenue, Q2 2026 losses narrowed 64% YoY, and management guides to profit in 2026. The bear case is equally concrete: a full-year FY2025 loss, EV share slipping against CATL and LG Energy Solution, no dividend until 2028, fresh dilution, and a ~₩10tn asset sale to an undisclosed buyer. At ₩431,000 and +64.2% YTD (as of Jul 27, 2026), a lot of the good news is already in the price. The disciplined question is not “will the turnaround happen?” but “how many profitable quarters is today’s price already assuming?”
Disclaimer: This article is for informational and educational purposes only and is not investment advice, a recommendation, or an offer to buy or sell any security. Figures are point-in-time (as of Jul 27, 2026) and sourced from DART filings, KRX/FinanceDataReader, and cited news reports; they go stale — verify live data before acting. Investing in foreign equities carries risk, including loss of principal. Do your own research and consult a licensed financial professional.