⚠ Nineteen Billion of Equity Under a $370 Billion CompanyLow threat

Caterpillar (CAT) — threat to the moat

Caterpillar has bought back $49.5 billion of its own stock, leaving $19 billion of equity under a company worth $370 billion.

Caterpillar's shareholders' equity is small for a company of its size, and getting smaller. It was $21,318 million at the end of 2025 and $19,394 million at 30 June 2026, after buybacks1. Treasury stock, the cost of shares bought back and held, was $49,539 million2.

Balance sheet items ($M)21,318Equity Dec 202519,394Equity Jun 202649,539Treasury stock at costCaterpillar Form 10-K FY2025; Form 10-Q Q2 2026
More than twice as much bought back as remains.

That is why the company's ratios look extreme. The shares traded at 19.08 times book value in September 20263, and return on average equity was about 43.5% in 20254. Both figures describe the thin equity more than the business.

Thin equity also means debt carries more weight. Consolidated debt was about $45.1 billion at 30 June 20265, most of it Cat Financial's. Caterpillar holds mid-A credit ratings from Moody's and S&P6, and its capital return policy is explicitly bounded by keeping them7.

The share count has fallen steadily. Caterpillar had 465,287,332 shares outstanding at the end of 20258, and about 459.67 million by September 20269. Issued shares were 814,894,624, of which 349,607,292 were held in treasury10.

The balance is sound today. The measure that would show strain is equity continuing to fall while debt rises; if buybacks outpace profit for long, the mid-A rating becomes the constraint on the moat's owners.

References
  1. ReportedIt was $21,318 million at the end of 2025 and $19,394 million at 30 June 2026, after buybacks.
    Caterpillar Form 10-Q for the quarter ended 30 June 2026 - backlog, outlook, tariffs, dealer inventory, balance sheet and the RPMGlobal acquisition - MD&A: order backlog, dealer inventory, tariffs, IEEPA recoveries and the 2026 outlook. — Q2 2026 · publ. 5 August 2026 · source ↗
  2. ReportedTreasury stock, the cost of shares bought back and held, was $49,539 million.
    Caterpillar Form 10-K for fiscal 2025 - Item 1 business: history, products, Cat Financial, employees and order backlog. — FY2025 · publ. 13 February 2026 · source ↗
  3. ReportedThe shares traded at 19.08 times book value in September 2026, and return on average equity was about 43.5% in 2025.
    Caterpillar (CAT) statistics - trailing P/E 34.70, forward P/E 28.01, P/B 19.08. — September 2026 · publ. 24 September 2026 · source ↗
  4. Moat Explorer calcThe shares traded at 19.08 times book value in September 2026, and return on average equity was about 43.5% in 2025.
    Moat Explorer calculation from Caterpillar's reported figures ($ millions unless stated). Dealers: 41 + 109 = 150 (2025); 43 + 113 = 156 (2022); 46 + 119 = 165 (2019). Segment margins (segment profit / total segment sales, FY2025 10-K basis): Construction Industries 6,975 / 27,418 = 25.4% (2023), 6,165 / 25,455 = 24.2% (2024), 4,675 / 25,060 = 18.7% (2025); Resource Industries 2,836 / 13,669 = 20.7%, 2,538 / 12,471 = 20.4%, 1,988 / 12,474 = 15.9%; Power & Energy 4,936 / 28,001 = 17.6%, 5,736 / 28,854 = 19.9%, 6,418 / 32,201 = 19.9%; Financial Products 909 / 3,785 = 24.0%, 932 / 4,053 = 23.0%, 966 / 4,220 = 22.9%, 590 / 3,044 = 19.4% (2020). Recast (Rail in Resource Industries): 2,151 / 15,920 = 13.5% (2025), 2,676 / 15,745 = 17.0% (2024); Power & Energy 6,256 / 28,624 = 21.9%. Construction Industries H1 2026 3,482 / 15,507 = 22.5%. Implied Rail: sales 15,920 - 12,474 = 3,446 and profit 2,151 - 1,988 = 163, 163 / 3,446 = 4.7% (2025); sales 15,745 - 12,471 = 3,274 and profit 2,676 - 2,538 = 138 (2024). Power generation 10,275 / 3,963 = 2.6 times (2020-2025); 10,275 / 67,589 = 15.2% of sales and revenues; three times the 2024 base 7,756 x 3 = 23,268. Oil and gas 7,502 / 27,143 = 27.6% of Power & Energy external sales; 7,502 / 3,701 = 2.0 times. Services 24 / 67.589 = 35.5%; (30 / 24)^(1/5) - 1 = 4.6% a year. Backlog 72.1 / 30.0 = 2.4 times; long end 29.2 / 19.3 - 1 = 51%. Customer advances 4,777 / 3,314 - 1 = 44%. Price realization H1 2026 426 + 595 = 1,021; 2024 against 2023 1,238 / 5,596 = 22%. Volume H1 2026 2,318 + 3,113 = 5,431. Capex excluding leased equipment 2,821 / 1,597 - 1 = 77%. Pre-tax return on average MP&E net assets (MP&E adjusted operating profit / average MP&E net assets): 4,675 / 20,070 = 23.3% (2020), 6,453 / 19,662 = 32.8% (2021), 8,656 / 19,841 = 43.6% (2022), 13,439 / 19,450 = 69.1% (2023), 13,246 / 19,999 = 66.2% (2024), 11,327 / 21,417 = 52.9% (2025). Profit 8,884 / 6,147 - 1 = 44.5% and diluted EPS 18.81 / 10.26 - 1 = 83.3% (2018-2025). Dividends paid 2,749 / profit 8,884 = 30.9%. Return on average equity 8,884 / ((19,494 + 21,318) / 2) = 43.5%. Price to earnings at year end (market capitalisation $bn / profit $bn): 39.57 / 2.512 = 15.8 (2015); 93.75 / 0.754 = 124.3 (2017); 74.98 / 6.147 = 12.2 (2018); 81.62 / 6.093 = 13.4 (2019); 98.88 / 2.998 = 33.0 (2020); 111.83 / 6.489 = 17.2 (2021); 124.67 / 6.705 = 18.6 (2022); 150.52 / 10.335 = 14.6 (2023); 175.14 / 10.792 = 16.2 (2024); 268.09 / 8.884 = 30.2 (2025); trailing 370.15 / 10.844 = 34.1. Share price 805.25 / 1,073.46 - 1 = -25%. Trailing twelve months to June 2026: sales and revenues 67,589 - 30,818 + 37,958 = 74,729; profit 8,884 - 4,182 + 6,142 = 10,844; diluted EPS 18.81 - 8.82 + 13.23 = 23.22. Debt at 30 June 2026 5,046 + 35 + 8,026 + 10,655 + 21,384 = 45,146; at 31 December 2025 5,514 + 35 + 7,085 + 10,678 + 20,018 = 43,330; Financial Products debt 5,514 + 7,085 + 20,018 = 32,617, 32,617 / 43,330 = 75%. Financial Products segment assets 41,476 / 64,392 = 64%. Downturns: 38,537 / 47,011 - 1 = -18% (2016); 41,748 / 53,800 - 1 = -22% (2020). Construction Industries Asia/Pacific external sales 3,783 / 4,390 - 1 = -14%; North America share 14,064 / 24,800 = 57%. Shares of 2025 sales and revenues of 67,589: Construction Industries 24,800 = 36.7%; Resource Industries 12,185 = 18.0%; Power & Energy 27,143 = 40.2%; Financial Products 4,220 = 6.2%; Construction and Resource together (24,800 + 12,185) / 67,589 = 54.7%. Segment external sum 27,143 + 24,800 + 12,185 + 4,220 = 68,348 against 67,589 (difference 759, All Other +46 and corporate items -805); 2024 25,344 + 12,100 + 24,088 + 4,053 = 65,585 against 64,809 (776); 2023 27,294 + 13,329 + 23,355 + 3,785 = 67,763 against 67,060 (703). Power & Energy share 27,143 / 68,348 = 39.7%. 2030 range: 64,809 x 1.06^6 = 91,933; 64,809 x 1.09^6 = 108,691. RPMGlobal 733 / 67,589 = 1.1%. Autonomous trucks 827 / 690 - 1 = 20%; 690 x 3 = 2,070. Tech-enabled machines 500 / 191 = 2.6 times. Latin America employees 22,300 - 19,700 = 2,600 (EAME 16,700 - 15,900 = 800; Asia/Pacific 26,900 - 25,300 = 1,600; North America 52,100 - 52,000 = 100). Profit 2025 8,884 / 10,792 - 1 = -17.7%. Cost of goods sold 44,752 / 40,199 - 1 = 11.3%. Financial Products segment assets 41,476 / 36,925 - 1 = 12.3%. Power generation growth 7,756 / 6,362 - 1 = 21.9%, 10,275 / 7,756 - 1 = 32.5%. Engine capex at 4% to 5% of 2025 machinery, power and energy sales of 63,980: 2,559 to 3,199. Earnings implied by forward and trailing P/E 34.70 / 28.01 - 1 = 24%. Analyst target 975.61 / 805.25 - 1 = 21%. Segment capex 2025: Construction Industries 358 + Resource Industries 626 = 984, against Financial Products 1,341. Power & Energy Q2 2026 external sales: North America 4,182 against other regions 373 + 1,348 + 892 = 2,613 - valuation, balance sheet, capital returns and returns on capital. — 2015-2026 · publ. September 2026 · source ↗
    Method: Arithmetic on figures reported in Caterpillar's Forms 10-K, 10-Q, results releases, the March 2026 recast exhibit, the February 2026 Barclays deck, the earnings calls and market data; operands shown in the source line.
  5. Moat Explorer calcConsolidated debt was about $45.1 billion at 30 June 2026, most of it Cat Financial's.
    Moat Explorer calculation from Caterpillar's reported figures ($ millions unless stated). Dealers: 41 + 109 = 150 (2025); 43 + 113 = 156 (2022); 46 + 119 = 165 (2019). Segment margins (segment profit / total segment sales, FY2025 10-K basis): Construction Industries 6,975 / 27,418 = 25.4% (2023), 6,165 / 25,455 = 24.2% (2024), 4,675 / 25,060 = 18.7% (2025); Resource Industries 2,836 / 13,669 = 20.7%, 2,538 / 12,471 = 20.4%, 1,988 / 12,474 = 15.9%; Power & Energy 4,936 / 28,001 = 17.6%, 5,736 / 28,854 = 19.9%, 6,418 / 32,201 = 19.9%; Financial Products 909 / 3,785 = 24.0%, 932 / 4,053 = 23.0%, 966 / 4,220 = 22.9%, 590 / 3,044 = 19.4% (2020). Recast (Rail in Resource Industries): 2,151 / 15,920 = 13.5% (2025), 2,676 / 15,745 = 17.0% (2024); Power & Energy 6,256 / 28,624 = 21.9%. Construction Industries H1 2026 3,482 / 15,507 = 22.5%. Implied Rail: sales 15,920 - 12,474 = 3,446 and profit 2,151 - 1,988 = 163, 163 / 3,446 = 4.7% (2025); sales 15,745 - 12,471 = 3,274 and profit 2,676 - 2,538 = 138 (2024). Power generation 10,275 / 3,963 = 2.6 times (2020-2025); 10,275 / 67,589 = 15.2% of sales and revenues; three times the 2024 base 7,756 x 3 = 23,268. Oil and gas 7,502 / 27,143 = 27.6% of Power & Energy external sales; 7,502 / 3,701 = 2.0 times. Services 24 / 67.589 = 35.5%; (30 / 24)^(1/5) - 1 = 4.6% a year. Backlog 72.1 / 30.0 = 2.4 times; long end 29.2 / 19.3 - 1 = 51%. Customer advances 4,777 / 3,314 - 1 = 44%. Price realization H1 2026 426 + 595 = 1,021; 2024 against 2023 1,238 / 5,596 = 22%. Volume H1 2026 2,318 + 3,113 = 5,431. Capex excluding leased equipment 2,821 / 1,597 - 1 = 77%. Pre-tax return on average MP&E net assets (MP&E adjusted operating profit / average MP&E net assets): 4,675 / 20,070 = 23.3% (2020), 6,453 / 19,662 = 32.8% (2021), 8,656 / 19,841 = 43.6% (2022), 13,439 / 19,450 = 69.1% (2023), 13,246 / 19,999 = 66.2% (2024), 11,327 / 21,417 = 52.9% (2025). Profit 8,884 / 6,147 - 1 = 44.5% and diluted EPS 18.81 / 10.26 - 1 = 83.3% (2018-2025). Dividends paid 2,749 / profit 8,884 = 30.9%. Return on average equity 8,884 / ((19,494 + 21,318) / 2) = 43.5%. Price to earnings at year end (market capitalisation $bn / profit $bn): 39.57 / 2.512 = 15.8 (2015); 93.75 / 0.754 = 124.3 (2017); 74.98 / 6.147 = 12.2 (2018); 81.62 / 6.093 = 13.4 (2019); 98.88 / 2.998 = 33.0 (2020); 111.83 / 6.489 = 17.2 (2021); 124.67 / 6.705 = 18.6 (2022); 150.52 / 10.335 = 14.6 (2023); 175.14 / 10.792 = 16.2 (2024); 268.09 / 8.884 = 30.2 (2025); trailing 370.15 / 10.844 = 34.1. Share price 805.25 / 1,073.46 - 1 = -25%. Trailing twelve months to June 2026: sales and revenues 67,589 - 30,818 + 37,958 = 74,729; profit 8,884 - 4,182 + 6,142 = 10,844; diluted EPS 18.81 - 8.82 + 13.23 = 23.22. Debt at 30 June 2026 5,046 + 35 + 8,026 + 10,655 + 21,384 = 45,146; at 31 December 2025 5,514 + 35 + 7,085 + 10,678 + 20,018 = 43,330; Financial Products debt 5,514 + 7,085 + 20,018 = 32,617, 32,617 / 43,330 = 75%. Financial Products segment assets 41,476 / 64,392 = 64%. Downturns: 38,537 / 47,011 - 1 = -18% (2016); 41,748 / 53,800 - 1 = -22% (2020). Construction Industries Asia/Pacific external sales 3,783 / 4,390 - 1 = -14%; North America share 14,064 / 24,800 = 57%. Shares of 2025 sales and revenues of 67,589: Construction Industries 24,800 = 36.7%; Resource Industries 12,185 = 18.0%; Power & Energy 27,143 = 40.2%; Financial Products 4,220 = 6.2%; Construction and Resource together (24,800 + 12,185) / 67,589 = 54.7%. Segment external sum 27,143 + 24,800 + 12,185 + 4,220 = 68,348 against 67,589 (difference 759, All Other +46 and corporate items -805); 2024 25,344 + 12,100 + 24,088 + 4,053 = 65,585 against 64,809 (776); 2023 27,294 + 13,329 + 23,355 + 3,785 = 67,763 against 67,060 (703). Power & Energy share 27,143 / 68,348 = 39.7%. 2030 range: 64,809 x 1.06^6 = 91,933; 64,809 x 1.09^6 = 108,691. RPMGlobal 733 / 67,589 = 1.1%. Autonomous trucks 827 / 690 - 1 = 20%; 690 x 3 = 2,070. Tech-enabled machines 500 / 191 = 2.6 times. Latin America employees 22,300 - 19,700 = 2,600 (EAME 16,700 - 15,900 = 800; Asia/Pacific 26,900 - 25,300 = 1,600; North America 52,100 - 52,000 = 100). Profit 2025 8,884 / 10,792 - 1 = -17.7%. Cost of goods sold 44,752 / 40,199 - 1 = 11.3%. Financial Products segment assets 41,476 / 36,925 - 1 = 12.3%. Power generation growth 7,756 / 6,362 - 1 = 21.9%, 10,275 / 7,756 - 1 = 32.5%. Engine capex at 4% to 5% of 2025 machinery, power and energy sales of 63,980: 2,559 to 3,199. Earnings implied by forward and trailing P/E 34.70 / 28.01 - 1 = 24%. Analyst target 975.61 / 805.25 - 1 = 21%. Segment capex 2025: Construction Industries 358 + Resource Industries 626 = 984, against Financial Products 1,341. Power & Energy Q2 2026 external sales: North America 4,182 against other regions 373 + 1,348 + 892 = 2,613 - valuation, balance sheet, capital returns and returns on capital. — 2015-2026 · publ. September 2026 · source ↗
    Method: Arithmetic on figures reported in Caterpillar's Forms 10-K, 10-Q, results releases, the March 2026 recast exhibit, the February 2026 Barclays deck, the earnings calls and market data; operands shown in the source line.
  6. ReportedCaterpillar holds mid-A credit ratings from Moody's and S&P, and its capital return policy is explicitly bounded by keeping them.
    Caterpillar Form 10-K for fiscal 2025 - Item 1 business: history, products, Cat Financial, employees and order backlog. — FY2025 · publ. 13 February 2026 · source ↗
  7. ReportedCaterpillar holds mid-A credit ratings from Moody's and S&P, and its capital return policy is explicitly bounded by keeping them.
    Caterpillar Form 10-Q for the quarter ended 30 June 2026 - backlog, outlook, tariffs, dealer inventory, balance sheet and the RPMGlobal acquisition - MD&A: order backlog, dealer inventory, tariffs, IEEPA recoveries and the 2026 outlook. — Q2 2026 · publ. 5 August 2026 · source ↗
  8. ReportedCaterpillar had 465,287,332 shares outstanding at the end of 2025, and about 459.67 million by September 2026.
    Caterpillar Form 10-K for fiscal 2025 - financial statements and notes: profit, per-share data, cash flow, balance sheet, debt, dividends and credit risk. — FY2025 · publ. 13 February 2026 · source ↗
  9. ReportedCaterpillar had 465,287,332 shares outstanding at the end of 2025, and about 459.67 million by September 2026.
    Caterpillar (CAT) statistics - trailing P/E 34.70, forward P/E 28.01, P/B 19.08. — September 2026 · publ. 24 September 2026 · source ↗
  10. ReportedIssued shares were 814,894,624, of which 349,607,292 were held in treasury.
    Caterpillar Form 10-K for fiscal 2025 - financial statements and notes: profit, per-share data, cash flow, balance sheet, debt, dividends and credit risk. — FY2025 · publ. 13 February 2026 · source ↗
Sources
Generated September 25, 2026