Buffett's $37B 'mistake' is now a $100B castings monopoly — and the supply-chain read explains why

GE Aerospace's CPP acquisition is the first arm's-length market price on a top-tier aerospace castings platform, and it landed roughly a year after most analysts had stopped arguing about PCC's writedown. GE paid 26x CPP's expected 2027 EBITDA without synergies — a level Barron's called 'pricey' — implying ~$11.75B of value for a company with ~$2.0B of expected 2027 revenue, of which roughly 60% is commercial aerospace. The same multiple applied to Berkshire Hathaway's Precision Castparts, with Barron's projecting $3.3B of 2026 pretax income and $3.8B in 2027, yields ~$100B.

The case for rerating was always two-pronged: GE/CPP proves scarcity, but PCC's own income statement has to support the multiple. The 2024 annual report — when Berkshire Hathaway wrote that 2024 revenue finally surpassed the 2019 pre-pandemic peak — was the first leg. The 2025 report and the first half of 2026 completed it: Berkshire Hathaway noted that PCC generated $2.4B of operating cash flow in 2025, compared with an average of $0.9B over 2021–2024, and Barron's confirmed a 14% sales gain and 34% pre-tax profit jump in Q2 2026.

Berkshire Hathaway's own framing of PCC's role in 2025 matters as much as the headline numbers. The annual report singled out the February 2025 SPS Technologies fire at Jenkintown, PA — which destroyed more than 80% of the 560,000-square-foot fastener plant — as a test of operational muscle: PCC redirected production across its global network, and no major aerospace customer experienced a production-line stoppage. That episode, plus the $2.4B of FY2025 operating cash flow, is what closes the credibility gap between the 2016 acquisition and the 2026 valuation.

The non-obvious read in the CNBC piece is that PCC's rerating reflects a structural constraint, not a cyclical recovery. Aerospace castings — investment castings for hot-section turbine blades, large structural castings for airframes, fasteners — are not commodity parts. New foundry capacity takes roughly three to five years to commission and qualify, and the certification locks in incumbent suppliers. With 12 years of backlog at Boeing and Airbus (16,683 aircraft on order at end of April 2026, the highest figure ever recorded), the demand side of the equation is mathematically fixed. The supply side is not.

GE CEO Larry Culp framed the CPP acquisition as 'securing mission-critical casting capacity at the physical-site level,' and told CNBC that bringing critical engine castings in-house is what unlocks the $210B-plus backlog faster. That sentence matters: the bottleneck is no longer just demand for Boeing and Airbus to clear — it is whether GE Aerospace, RTX and Pratt & Whitney can get castings and forgings on time. The implication for Berkshire Hathaway is that PCC's competitive position just hardened, not because PCC improved, but because the third competitor is now a captive.

Castings are the visible bottleneck; titanium is the upstream one. According to Project Blue data referenced in a Sep 4, 2026 Crux Investor note, China's share of global titanium metal production climbed from around 40% in 2019 to over 75% in 2025, just as commercial aerospace and defense demand is forecast to grow. PCC is the largest integrated titanium producer outside Russia and China via its TIMET subsidiary — the same TIMET that Berkshire acquired in 2013 and rolled into PCC in 2016. The same logic that re-rated PCC's castings now applies one layer up: whoever controls qualified titanium controls the engine and airframe programs.

Two buyers now have a clear motive to secure titanium — GE Aerospace (which just integrated CPP) and Berkshire Hathaway (via TIMET inside PCC). Howmet Aerospace's Engineered Structures segment, which makes titanium ingots and mill products, is the US-listed pure-play closest to that supply chain. The Sep 8 selloff in HWM may therefore be the wrong read on the right news: a vertically integrated GE Aerospace plus a Berkshire-owned TIMET plus a Howmet Aerospace that owns 32%-plus-margin titanium products means capacity is finally being paid for at scarcity multiples, not commodity multiples.

The castings bottleneck is only valuable if downstream deliveries actually ramp. Boeing's Q2 2026 — revenue of $24.6B (+8% YoY), 171 commercial deliveries, GAAP loss narrowed to ($0.67) per share, with management reaffirming a path to 47 737 MAX per month in summer 2026 and 53 per month by year-end — is the demand proof. Boeing is targeting 500 737 deliveries in 2026 and exploring a 70/month production rate. On the Airbus side, 475 aircraft had been delivered through August against a full-year 870 target, and the company reported 822 net orders in H1 2026 alone.

Short-term (days to quarters): The market is repricing PCC at the GE/CPP multiple, but Berkshire Hathaway does not break out PCC's earnings dollar figure or mark it on the balance sheet at market — so the rerating shows up in Barron's math, not in Berkshire Hathaway's GAAP results. The cleanest near-term trades are the names already moving: GE Aerospace (catalyst closed Sep 8; stock little changed on the day but YTD up ~21%), Howmet Aerospace (oversold at $231.53 if the castings market expands, not consolidates), and Boeing (demand pull, 737 ramp). Berkshire Hathaway is a slower vehicle — the value is real, but it shows up in segment disclosure, not multiples.

Long-term (1–3 years): Two things have to hold for the ~$100B mark to stick. First, the castings bottleneck has to stay a bottleneck — meaning Boeing actually clears the 47→53→70/month ramp and Airbus holds near 870 deliveries, while no new foundry comes online in time. Second, the titanium layer upstream has to remain constrained, which is a function of Western capacity decisions and Chinese export policy, not PCC's own management. The 2027 GE/CPP close is the next hard milestone: at 18x post-synergy EBITDA, GE Aerospace is essentially telling the market what scarcity-priced cash flow looks like, and that is the comp everyone will use. Precision Castparts closes its rebuilt SPS Technologies site in early 2028, which removes a known capacity overhang — and the rebuild is a 350,000-square-foot LEED-certified facility, smaller than the 560,000 sq ft it replaces, suggesting PCC is betting on quality and certification, not volume.