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The Siam Cement vs Builders FirstSource: why the prices moved differently

Weekly · monthly · quarterly news summaries, side by side in time

The Siam Cement Public Company Limited (SCC.BK)

Q3 2026
▲3▼1

SCC Q2 profit surge, raised targets, and Vietnam project acceleration

  • Strong Q2 earnings beat SCC's core profit jumped 266% year-on-year and beat estimates by 48%, leading brokers to raise target prices to 276–381 baht. This shows the company is performing much better than expected.

    This is the main positive driver of the stock's price during the period.

  • Raised EBITDA target and Vietnam project acceleration Management raised its 2026 EBITDA target above 56 billion baht and sped up the Vietnam LSP project to mid-2027, which should add about 9 billion baht annually. This signals confidence in future growth.

    These forward-looking actions directly influence investor expectations and valuation.

  • Debt reduction and dividend SCC cut net debt to 3.7x EBITDA and declared a 3.5 baht interim dividend. Lower debt reduces financial risk, and the dividend provides income to shareholders, both supporting the stock.

    These financial moves improve the company's balance sheet and reward investors.

  • Persistent risks and volatility Risks include volatile energy and naphtha costs, Middle East tensions, data-centre oversupply, political noise, Bangkok floods cutting GDP by ~0.16%, and a weak baht. These factors keep the stock volatile and could pressure earnings.

    These are the main counterweights that could offset positive developments.

September 2026
▲3▼1

Rayong restart and SCGC-PTTGC JV progress lift SCC; floods cap gains

  • Rayong Olefins restart restores output SCC shares gained after its Rayong Olefins plant (1.35 million tonnes/year) restarted on September 17, having been shut since March due to Middle East conflict. This restores lost production and supports earnings.

    The restart is a major new operational event that directly lifted the stock.

  • SCGC-PTTGC olefins JV in due diligence Progress toward an SCGC–PTTGC olefins joint venture, now in due diligence with terms due October, could cut costs and raise utilization. This potential deal supports sentiment and future profitability.

    The JV advancement is a new strategic development that could improve industry structure and margins.

  • Demand boost from restocking, budget, flood canal Q3 petrochemical restocking, Thailand's 3.788-trillion-baht FY2027 budget, a newly approved 165-billion-baht flood canal, and broker upgrades (targets up to 381 baht) all support demand and sentiment for SCC.

    These new demand-side and policy catalysts are key positive forces behind the stock's move.

  • Floods and weak baht temper gains Bangkok floods cut GDP by about 0.16% and weigh on the market, while a weak baht and Middle East tension keep volatility elevated. Flood-related repair demand is only a mixed net positive.

    This is the main counterweight that limited the stock's upside during the period.

Latest
▲3

SCC rises on PTTGC chemicals deal progress and new state construction demand

  • SCGC-PTTGC olefins joint venture advances to due diligence SCC's chemical arm SCGC and PTTGC have entered due diligence and are negotiating terms for a Thai olefins joint venture, with details due in October. A deal would cut costs and lift plant use, and analysts raised targets on the news, pushing the stock up.

    This is the period's biggest new company-specific catalyst and directly moves SCC's price.

  • Brokers raise SCC targets and name it a top Q4 pick KGI lifted its best-case target to 381 baht and Asia Plus recommends buying with a 310 baht target, citing the chemicals joint venture and a profit base spreading beyond chemicals. Krungsri named SCC a top Q4 2026 pick. Higher targets draw buyers.

    New analyst upgrades and top-pick calls are fresh, price-moving signals for readers.

  • Cabinet approves 165-billion-baht flood canal megaproject The cabinet approved a 165 billion baht Chai Nat-Pa Sak-Gulf drainage canal, with construction from 2027 over eight years. SCC is named among cement and materials beneficiaries, adding long-term demand for its construction materials business.

    A newly approved megaproject is a new demand driver for SCC's cement arm.

  • Bangkok floods lift repair demand but add market risk Krungsri lists SCC among home-repair beneficiaries from Bangkok flooding, a small demand boost. But the floods cut GDP about 0.16% and weigh on the market, and a weak baht plus Middle East tension keep volatility high, so the net effect is mixed.

    It is the period's main counterweight, showing both a modest demand lift and broader risk.

▲4

SCC's Rayong olefins restart and PTTGC deal progress drive gains

  • Rayong Olefins plant restarts after Middle East halt SCC's Rayong Olefins plant restarted on 17 September after being shut since March due to Middle East conflict. The plant can make 1.35 million tonnes of olefins a year, and restarting restores lost production and profit, pushing the stock up.

    This is the single biggest new event of the period and directly restores SCC's earnings capacity.

  • SCGC-PTTGC olefins joint venture nears clarity SCC is close to finishing a study on merging its chemical arm SCGC with PTTGC's olefins business, with details expected by end-September. A deal could cut costs and raise plant use, lifting future profit and supporting the share price.

    The pending JV decision is a major new catalyst that could reshape SCC's chemical earnings.

  • Petrochemical demand recovers in Q3 2026 Petrochemical buyers are restocking ahead of the high-demand season, and the global oversupply is easing. This supports higher product prices and sales volumes for SCC's chemical business, improving profit and helping the stock.

    The demand recovery is a new fundamental shift that underpins SCC's earnings outlook.

  • State budget and infrastructure spending boost cement demand Thailand's 3.788 trillion baht fiscal 2027 budget, with 789 billion baht for investment, will fund roads, rail and ports. SCC is named a main beneficiary as cement and concrete demand rises, supporting its construction materials business.

    New government spending plans directly lift demand for SCC's core cement products.

August 2026
▲3▼1

SCC raises EBITDA target, pulls Vietnam plant forward, but risks linger

  • Management raises 2026 EBITDA target above 56 billion baht SCC now expects 2026 EBITDA above 56 billion baht, up from earlier guidance, driven by data-centre and foreign direct investment demand. This signals stronger future earnings and supports the stock.

    This is a new, positive development that directly boosts investor confidence in SCC's growth outlook.

  • Vietnam LSP plant pulled forward to mid-2027 SCC accelerated its Vietnam LSP ethane feedstock project to mid-2027, expected to add about 9 billion baht in annual EBITDA. This earlier start should lower costs and improve chemical margins sooner than planned.

    This is a new timeline update that brings forward a key earnings driver, positively impacting future profits.

  • Interim dividend of 3.5 baht and net debt cut to 3.7x EBITDA SCC declared a 3.5 baht interim dividend and reduced net debt to 3.7 times EBITDA, strengthening its financial position. This rewards shareholders and lowers risk, supporting the stock price.

    This is a new capital return and balance sheet improvement that enhances shareholder value.

  • Risks: volatile energy prices, Middle East tensions, naphtha costs, LSP halt SCC faces volatile energy prices, Middle East tensions, naphtha costs of $600–1,000 per ton, and the halted LSP plant pressuring chemical margins. Data-centre oversupply and political noise also weigh on sentiment.

    These are ongoing and new risk factors that could negatively impact SCC's performance and stock price.

▲4

SCC lifts 2026 outlook on data centres, Hormuz-proof sourcing, Vietnam LSP

  • SCC raises 2026 EBITDA target on FDI and data-centre demand SCC now expects 2026 adjusted cash EBITDA to beat its 56 billion baht target, after 42.9 billion in the first half. Foreign investment and data-centre construction are driving industrial infrastructure demand, offsetting the weak property market. A higher profit outlook supports the share price.

    This is the period's main new company-specific upgrade to earnings guidance.

  • Vietnam LSP petrochemical plant pulled forward to mid-2027 SCC is speeding up its Vietnam LSP complex to finish by mid-2027, earlier than planned. At full capacity it could add about 9 billion baht of EBITDA a year. Starting sooner means extra profit arrives sooner, which helps the stock.

    New timeline and profit contribution directly lift future earnings expectations.

  • SCC lifts non-Hormuz sourcing to 80% to cut Middle East risk SCC raised the share of raw materials bought outside the Strait of Hormuz to about 80% from 50%, and keeps its 30 billion baht investment budget. This reduces the chance that conflict disrupts feedstock and margins, making earnings steadier and the stock less risky.

    New concrete action that lowers the biggest supply risk flagged in earlier reports.

  • State rail projects and low-carbon cement add demand and support The cabinet approved three southern dual-track rail routes worth 107 billion baht, with bidding from late 2026, lifting future cement demand. Analysts also cite SCC's low-carbon cement and the planned olefins merger with PTTGC as positive factors, though data-centre oversupply and political noise weigh on market confidence.

    New demand and strategic catalysts, with the market-wide counterweight noted.

▲3▼1

SCC earnings beat, dividend paid, but volatile energy costs cloud second half

  • First-half EBITDA jumps 35%, interim dividend declared SCC's first-half adjusted cash EBITDA rose 35% to 42.9 billion baht, with second-quarter EBITDA up 47% year-on-year. It approved a 3.5 baht interim dividend (4.2 billion baht) and cut net debt sharply, cutting its debt-to-EBITDA ratio to 3.7 times from 5.0. Stronger finances and cash returns support the shares.

    This is the core new financial result and dividend that directly lifts investor confidence and the stock.

  • SCC profit beats expectations by 41%, brokers positive Bualuang Securities said SCC's reported profit was 41% above expectations, among the strongest outperformers this earnings season. PTTGC's strong quarter and CLSA's raised target also highlighted the planned PTTGC-SCC polyolefins joint venture, which would create ASEAN's largest producer. Beating forecasts supports higher target prices and the stock.

    Earnings beats and the potential joint venture are new catalysts that can re-rate the stock.

  • Second-half energy price volatility and Middle East risk SCC expects highly volatile energy prices in the second half, with Middle East risks greater than in the first half. Naphtha costs have risen to $600–1,000 per ton, forcing frequent selling-price changes, and the LSP plant has halted due to insufficient feedstock. Higher, unpredictable input costs pressure chemical margins and the stock.

    This is the main new risk factor that could cap SCC's earnings and share price in coming months.

  • Cost cuts and ethane switch to offset energy risk SCC is sourcing raw materials outside the Strait of Hormuz and its Vietnam LSP ethane project is 60% complete, expected to cut costs by $200–300 million yearly. It keeps its 30 billion baht investment budget, mainly for cement and building materials. These moves should lower costs and protect earnings despite volatile energy prices.

    This shows the company's concrete response to the energy risk, a positive counterweight for future margins.

July 2026
▲4

SCC Q2 profit beats forecasts, brokers raise targets; oil surge adds support

  • Q2 profit beats expectations, brokers raise targets SCC's Q2 net profit fell 33% year-on-year to 11.5 billion baht, but core profit surged 266% year-on-year and beat analyst estimates by 48%. Several brokers raised their target prices to 276–315 baht, citing recovery in petrochemicals and packaging. This positive surprise is pushing the stock up as investors re-rate future earnings.

    This is the main new event driving the stock: an earnings beat that led to analyst upgrades.

  • Company expects higher EBITDA and revenue, reduces debt SCC expects full-year 2026 adjusted cash EBITDA to exceed last year's 54–55 billion baht, after H1 reached 42.9 billion baht, up 35%. Revenue is also expected to surpass last year's 516.95 billion baht, driven by higher chemical prices and packaging volumes. Net debt fell by 39.2 billion baht, cutting the net debt-to-EBITDA ratio to 3.7 times from 5. This strengthens the financial position and supports the stock.

    This provides forward-looking positive guidance and balance sheet improvement, reinforcing the bullish case.

  • Oil price surge supports petrochemical margins and sector rotation Brent crude surged past $90 and later $100 on Middle East tensions, lifting petrochemical stocks. SCC rose 0.79% on July 20 and was mentioned as a beneficiary of fund rotation into commodity plays. Higher oil prices support product prices and margins for SCC's chemicals business, though prolonged high oil could eventually hurt demand.

    This is a key external driver that directly affects SCC's chemical product prices and investor sentiment.

  • Carbon neutrality strategy and LSP project progress SCC said its carbon neutrality and net zero targets are a long-term competitiveness strategy, investing in AI, automation, low-carbon tech, and smart factories. The LSP ethane feedstock project in Vietnam is over 60% complete and expected to start in late 2027. These initiatives aim to reduce costs and boost efficiency, supporting future earnings growth.

    This highlights strategic moves that could improve long-term profitability and competitiveness.

▲4

SCC Q2 profit beats forecasts, brokers raise targets; oil surge adds support

  • Q2 profit beats expectations, brokers raise targets SCC's Q2 net profit fell 33% year-on-year to 11.5 billion baht, but core profit surged 266% year-on-year and beat analyst estimates by 48%. Several brokers raised their target prices to 276–315 baht, citing recovery in petrochemicals and packaging. This positive surprise is pushing the stock up as investors re-rate future earnings.

    This is the main new event driving the stock: an earnings beat that led to analyst upgrades.

  • Company expects higher EBITDA and revenue, reduces debt SCC expects full-year 2026 adjusted cash EBITDA to exceed last year's 54–55 billion baht, after H1 reached 42.9 billion baht, up 35%. Revenue is also expected to surpass last year's 516.95 billion baht, driven by higher chemical prices and packaging volumes. Net debt fell by 39.2 billion baht, cutting the net debt-to-EBITDA ratio to 3.7 times from 5. This strengthens the financial position and supports the stock.

    This provides forward-looking positive guidance and balance sheet improvement, reinforcing the bullish case.

  • Oil price surge supports petrochemical margins and sector rotation Brent crude surged past $90 and later $100 on Middle East tensions, lifting petrochemical stocks. SCC rose 0.79% on July 20 and was mentioned as a beneficiary of fund rotation into commodity plays. Higher oil prices support product prices and margins for SCC's chemicals business, though prolonged high oil could eventually hurt demand.

    This is a key external driver that directly affects SCC's chemical product prices and investor sentiment.

  • Carbon neutrality strategy and LSP project progress SCC said its carbon neutrality and net zero targets are a long-term competitiveness strategy, investing in AI, automation, low-carbon tech, and smart factories. The LSP ethane feedstock project in Vietnam is over 60% complete and expected to start in late 2027. These initiatives aim to reduce costs and boost efficiency, supporting future earnings growth.

    This highlights strategic moves that could improve long-term profitability and competitiveness.

Builders FirstSource Inc (BLDR)

Q3 2026
▼2▲1

Housing Bill Hopes Meet Weak Q2 Reality for BLDR

  • Housing supply bill becomes law Congress passed the 21st Century ROAD to Housing Act, which cuts red tape, speeds environmental reviews, and limits large investors from buying more existing homes. This should boost new home construction over years, increasing demand for BLDR's building products. Shares jumped over 11% on the news.

    This is the main new positive force driving BLDR's outlook and was the biggest price catalyst in the period.

  • Iran ceasefire collapse raises oil and mortgage rates President Trump declared the Iran ceasefire over, pushing oil prices higher and lifting bond yields. Higher mortgage rates cool housing demand, while costlier oil raises production and freight costs for BLDR. Shares fell 3.9% on the day.

    This is a new geopolitical shock that directly pressures BLDR's demand and margins.

  • Q2 loss and weak guidance BLDR reported a Q2 GAAP loss of $0.04 per share, missing estimates by $0.79. Revenue fell 8.1% to $3.86 billion, below consensus, on weaker housing starts. The company guided 2026 sales and profit well below prior expectations, sending shares down 6% pre-market.

    This is the latest hard financial result showing current business weakness, a key counterweight to the housing bill optimism.

July 2026
▼2▲1

Housing Bill Hopes Meet Weak Q2 Reality for BLDR

  • Housing supply bill becomes law Congress passed the 21st Century ROAD to Housing Act, which cuts red tape, speeds environmental reviews, and limits large investors from buying more existing homes. This should boost new home construction over years, increasing demand for BLDR's building products. Shares jumped over 11% on the news.

    This is the main new positive force driving BLDR's outlook and was the biggest price catalyst in the period.

  • Iran ceasefire collapse raises oil and mortgage rates President Trump declared the Iran ceasefire over, pushing oil prices higher and lifting bond yields. Higher mortgage rates cool housing demand, while costlier oil raises production and freight costs for BLDR. Shares fell 3.9% on the day.

    This is a new geopolitical shock that directly pressures BLDR's demand and margins.

  • Q2 loss and weak guidance BLDR reported a Q2 GAAP loss of $0.04 per share, missing estimates by $0.79. Revenue fell 8.1% to $3.86 billion, below consensus, on weaker housing starts. The company guided 2026 sales and profit well below prior expectations, sending shares down 6% pre-market.

    This is the latest hard financial result showing current business weakness, a key counterweight to the housing bill optimism.

Latest
▼2▲1

Housing Bill Hopes Meet Weak Q2 Reality for BLDR

  • Housing supply bill becomes law Congress passed the 21st Century ROAD to Housing Act, which cuts red tape, speeds environmental reviews, and limits large investors from buying more existing homes. This should boost new home construction over years, increasing demand for BLDR's building products. Shares jumped over 11% on the news.

    This is the main new positive force driving BLDR's outlook and was the biggest price catalyst in the period.

  • Iran ceasefire collapse raises oil and mortgage rates President Trump declared the Iran ceasefire over, pushing oil prices higher and lifting bond yields. Higher mortgage rates cool housing demand, while costlier oil raises production and freight costs for BLDR. Shares fell 3.9% on the day.

    This is a new geopolitical shock that directly pressures BLDR's demand and margins.

  • Q2 loss and weak guidance BLDR reported a Q2 GAAP loss of $0.04 per share, missing estimates by $0.79. Revenue fell 8.1% to $3.86 billion, below consensus, on weaker housing starts. The company guided 2026 sales and profit well below prior expectations, sending shares down 6% pre-market.

    This is the latest hard financial result showing current business weakness, a key counterweight to the housing bill optimism.

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