$21.89
$45.59
bear $21.89
base $35.61
bull $45.59
margin of safety $17.00
market price* $18.89
WHAT THE BUSINESS IS Quanex Building Products makes the parts that go into windows, doors and cabinets and sells them to the companies that build those products. It has three segments. Hardware Solutions makes window and door hardware and screens. Extruded Solutions makes insulating-glass spacers, vinyl window and door profiles, seals and weatherstripping. Custom Solutions makes wood components, rubber and polymer compounds, and building-access products. On August 1, 2024 Quanex bought Tyman plc, a UK-listed hardware and seals maker, paying with a new $500 million bank term loan, revolver borrowings and new shares. Sales went from $1.28 billion in fiscal 2024 to $1.84 billion in fiscal 2025 (the fiscal year ends October 31). About 68% of fiscal 2025 sales went to US customers and about 25% to Europe (mainly the United Kingdom, Germany and Italy). One customer took more than 10% of sales. Demand depends on window and door replacement and remodeling, and on new home building. US window shipments fell 3.9% in the twelve months to September 2025, and volumes fell in all three segments in fiscal 2025. HOW WE MEASURED EARNING POWER We start from cash flow from operations, remove short-term swings in working capital, subtract stock-based pay, and subtract the capital spending needed to keep the plants running. What is left is owner earnings, the cash the shareholders earn after paying interest. Two goodwill write-downs cost no cash and are added back: $302.3 million in fiscal 2025 (on the Tyman hardware business) and $74.6 million in fiscal 2019. About $39 million a year of amortization on acquired customer relationships and trade names is also added back, because those relationships are kept alive by selling and service costs already deducted. Owner earnings per share over ten years: $1.02 (2016), $1.29, $1.37, $1.79, $1.87, $2.67, $3.14 (2022 housing peak), $2.87, $1.02 (2024, carrying Tyman deal costs) and $1.86 (2025, first full year with Tyman). We value the business before its lenders and then subtract what it owes. In fiscal 2025 the company paid $52.6 million of cash interest, so the business itself produced $138.7 million ($86.0 million of owner earnings plus that interest), about $3.00 per share. At July 31, 2026 borrowings, including about $60 million of finance leases mostly on real estate, were $663.4 million. Cash was $62.1 million; we keep $30 million back as working cash and count the rest against the debt. The bank loans float at SOFR plus 2.0% to 2.75%, averaged 6.83% in fiscal 2025 and mature on August 1, 2029; that cost above our yardstick is worth about $10 million today and is added to the debt. Net debt is about $641 million, roughly $14 per share. THE STARTING POINT The Tyman deal changed the business, so fiscal 2025, the only full year of the combined company, is the starting level. It was earned in a weak demand year and absorbed about $10 million of restructuring charges. The first nine months of fiscal 2026 show sales up 1.9% to $1.37 billion, but operating income before write-downs of $68.1 million against $75.6 million a year earlier, leaving cash earnings roughly flat to slightly down; the third quarter (to July 31, 2026) was clearly stronger, with operating income of $46.5 million against $31.4 million before the prior-year write-down. We set the base case at $136 million a year before interest, about 2% below fiscal 2025. WHAT CHANGED SINCE OUR PREVIOUS ANALYSIS The business itself has not reported anything new since our last review. What we have done is test the bear case against the housing collapse of 2006 to 2009, which both halves of today's company lived through, and it showed our earlier bear case was far too mild. It assumed a modest dip and that the banks would simply reprice the loans. History says otherwise, and the bear case and margin of safety price are both lower as a result. THE CASES Base case, $35.61 per share. The business earns $136 million a year before interest and holds that level with no growth. We credit no housing recovery, no market-share gains and no repair of Hardware Solutions margins, because none of those is secured. We keep the level going beyond ten years because replacing windows and doors in the existing housing stock is a recurring need, and these product lines, including Truth hardware, Schlegel seals and the insulating-glass spacer business, have operated for decades and survived the 2008 housing collapse. The business is worth about $2,267 million, it owes about $641 million net, leaving about $1,625 million for shareholders, or $35.61 per share on 45.65 million diluted shares. Bear case, $21.89 per share. This case is built on the 2006 to 2009 housing collapse. In that episode Quanex's window and door components business (then called Engineered Products) saw sales fall from $524.6 million in fiscal 2006 to $323.3 million in fiscal 2009, down 38%, and operating income before write-downs fall from $52.5 million to $20.8 million, down 60%, with housing not recovering until about 2012. Because fiscal 2025 was already a weak year rather than a peak, we apply the fall seen from one year into that slump to the bottom (fiscal 2007 to fiscal 2009, about 52%) rather than the full peak-to-trough drop. Pre-interest cash earnings fall to $110 million in the first year and $65 million for the following three, recover to $90 million and $105 million, and then settle permanently at $120 million, below today's level, because Hardware Solutions earned thin margins even before the downturn and the company has written down two acquisitions (2019 and 2025). The debt is what makes this case worse than the earnings alone. The credit agreement requires net debt of no more than 3.25 times adjusted EBITDA and interest coverage of at least 3.0 times; net leverage was about 3.1 times in April 2026, so even a modest decline breaks the first test, and in this downturn interest coverage would fall to roughly 1.3 times. That hands control to the lenders. Tyman's predecessor, Lupus Capital, went through exactly this in April 2009: it skipped a loan payment, triggered a default across its facilities, and had to renegotiate and stop paying dividends until debt came down. We assume the same pressure here forces Quanex to raise about $150 million of new equity near the bottom at about $10 a share, issuing about 15 million new shares to pay down debt. The business is worth about $1,819 million, it owes about $491 million after that repayment, leaving about $1,328 million spread across about 60.65 million shares, or $21.89 per share. If the banks instead simply reprice the loans about 3 percentage points higher for five years without new shares, the value would be about $24; we use the dilution outcome because a covenant breach at the bottom of a cycle, with a 2029 maturity behind it, is when lenders hold the stronger hand. A fall as deep as the full 2006 to 2009 decline from today's level, with a larger raise at lower prices, would leave about $18 per share; we regard that as beyond a reasonable bad outcome because today's starting point is not a housing peak. Bull case, $45.59 per share. The company's own improvements take hold, starting from the strong third quarter of fiscal 2026. Margins in Hardware Solutions recover partway as the integration and cost work shown in that quarter continues; operating income of $46.5 million in the July 2026 quarter against $31.4 million a year earlier is the evidence this lever is real. Pre-interest cash earnings reach $145 million next year, $155 million the year after and $165 million from year three, then hold flat with no further growth credited. The business is worth about $2,722 million, it owes about $641 million, leaving about $2,081 million, or $45.59 per share. MARGIN OF SAFETY PRICE: $17 How sure are we of the earnings level? Moderately. Fiscal 2025 is the only full year of the combined company and it was a weak year, so $136 million is a reasonable middle, but the nine-month trend and the strong third quarter point in different directions. The worst plausible event is a housing downturn of the 2008 kind arriving while leverage sits just under the bank limit; the business survived that once with no debt, but Tyman's predecessor did not get through it without a default, and today's company carries both businesses and about $641 million of net debt. If we are wrong about the depth of a downturn, the timing of the 2029 refinancing, or the recovery in Hardware Solutions, the shares could be worth in the high teens to low twenties for several years. The price assumes about four years for value to be recognized, and the company pays $0.32 a share a year in dividends over that period, a payment that would likely stop in a downturn. From $17, reaching the base value within four years plus dividends implies about 20% a year, and if the bad outcome arrives instead, the bear value of about $22 still sits above that price. Above $17 the result depends on the recovery arriving quickly, which the closeness of the bank limit does not let us count on. WHAT COULD MAKE THIS WRONG On the downside: a slump in window replacement deeper or longer than 2007 to 2009, further write-downs in the Tyman businesses, loss of the largest customer, or a 2029 refinancing on materially worse terms. On the upside: the third-quarter recovery in Hardware Solutions could prove lasting and larger than the bull case assumes, and continued debt repayment would widen the room under the bank limit. The full text of the fiscal 2026 quarterly reports was not available to us, so the nine-month figures come from the company's reported financial data and could not be reconciled line by line.