Why High-ROIC Businesses Choose Buybacks Over Reinvestment

Apple spent $94.9 billion buying back its own stock in fiscal 2024 — roughly ten dollars of repurchases for every dollar it spent on capital expenditures that year, per the company's fiscal 2024 10-K. Go back to fiscal 2013, the year after Apple's board more than doubled its capital return program, and the ratio was closer to three to one: $23.0 billion in buybacks against $7.3 billion in capex. The company didn't get worse at finding places to invest. It got dramatically better at generating cash relative to the size of the opportunities left to fund.

Costco Wholesale ran fiscal 2024 almost the opposite way. The company spent $4.7 billion on capital expenditures — new warehouses, remodels, distribution and information-systems infrastructure — against just $500 million in share repurchases, per its own fiscal 2024 10-K. Both businesses post excellent returns on capital. Neither is doing anything wrong. And that's exactly the point: a high return on invested capital tells you a business is good at what it does. It tells you almost nothing about whether it should keep plowing new money into doing more of it.

What actually separates a rational shift toward buybacks from a management team quietly giving up on growth is the size of the reinvestment opportunity set relative to the cash coming in the door — not the ROIC figure sitting at the top of a screener. I want to walk through why Apple and Costco, two businesses with genuinely high returns on capital, have ended up on opposite ends of that decision, and what it should and shouldn't tell you about either one.

The Opportunity Set, Not the ROIC, Explains the Split

Start with what doesn't distinguish these two companies, because it's the number most investors reach for first. Apple's return on invested capital has run in the neighborhood of 50-70% in recent fiscal years by most third-party calculations built on its reported financials — an extraordinary level even by mega-cap technology standards. Costco's ROIC has climbed too, from roughly 14.7% in fiscal 2020 to about 21.3% in fiscal 2024, per third-party tracking of the company's annual filings. Both numbers describe a business earning far more than its cost of capital on the money already deployed. Neither number, by itself, says anything about the next dollar.

That's the distinction return on incremental capital is built to capture, and it's the one that actually explains a buyback decision. A business retains and reinvests earnings when it has projects available that earn something close to its steady-state return. It returns cash to shareholders instead once the reinvestment opportunity set runs thinner than the cash available to fund it — not because the business got worse, but because there's only so much retail floor space, distribution capacity, or addressable market a given company can credibly expand into at a given return. Growth funded by reinvestment at a high incremental rate is the good kind. Growth funded by an acquisition is a mixed case — it depends entirely on the price paid and whether the capital allocation discipline behind the deal holds up. And growth chased past the point where incremental returns still clear the cost of capital — through overpriced acquisitions or expansion into markets the business doesn't actually have an edge in — is the kind that quietly destroys the same value a high ROIC took years to build. So the test isn't ROIC in isolation. It's whether the next dollar deployed still clears the hurdle, and how many of those dollars are actually available to deploy at all.

Apple: The Cash Outgrew the Opportunity Set

Apple's board authorized its first capital return program in 2012 and more than doubled it in April 2013, a decision the company framed around returning cash generated well beyond what the business needed to fund its own growth. That framing has held up. In fiscal 2013, Apple repurchased $23.0 billion in stock against $7.3 billion in capital expenditures — a buyback-to-capex ratio of roughly 3.2 to 1, itself already a capital-return-heavy posture. By fiscal 2024, the company repurchased $94.9 billion in stock against capital expenditures of $9.4 billion, a ratio closer to 10 to 1.

The operating business behind those numbers didn't slow down. Apple's revenue, product lineup, and services business all expanded meaningfully across that span. What changed is the relationship between the cash the business throws off and the capital-intensity of growing it further. Apple doesn't need proportionally more factories, warehouses, or store openings to sell more iPhones and more services subscriptions the way a retailer needs more square footage — the operating model scales with comparatively modest incremental capex, R&D spending aside. Once free cash flow started running tens of billions of dollars ahead of what the business could credibly redeploy at anything close to its own return profile, sending the excess back to shareholders became the more defensible choice than chasing acquisitions or adjacent bets just to keep a reinvestment number growing.

That's a genuinely different problem than a business whose returns are falling. Apple's returns on the capital already employed remain some of the highest of any company this size. What narrowed wasn't the return. It was the size of the pool of new projects able to earn anywhere near that return, relative to how much cash the business generates every quarter. A quality compounder running out of places to deploy fresh capital at its own rate of return isn't a contradiction — it's what happens when a business scales large enough that even a large opportunity looks small next to the balance sheet funding it.

Costco: The Runway Is Still Wide Open

Costco's capital allocation looks almost inverted. The company spent $4.7 billion on capital expenditures in fiscal 2024 — largely land, buildings, and equipment for new and remodeled warehouses, distribution centers, and information systems, per its 10-K — against only $500 million in share repurchases that same year. Costco has told investors it plans to spend a similar amount in fiscal 2025 while opening up to 29 additional warehouses, including three relocations.

Crucially, that reinvestment hasn't been diluting returns the way heavy capex sometimes does. Costco's ROIC rose from approximately 14.7% in fiscal 2020 to roughly 21.3% in fiscal 2024, with net operating profit after tax climbing from about $4.25 billion to roughly $7.0 billion over the same stretch, per third-party compilations of the company's annual filings. A business reinvesting aggressively while its returns rise, not falls, is showing you a reinvestment runway that hasn't narrowed yet — new warehouses are still earning returns comparable to, or better than, the existing fleet.

Not conservatism. Opportunity. Costco's minimal buyback activity is the natural consequence of still having a large number of above-hurdle projects competing for the next dollar of capital. When that stops being true — when new-warehouse returns start lagging the existing base, or the company runs out of markets worth entering — you'd expect Costco's capital allocation to start looking more like Apple's does today. It hasn't happened yet, and the ROIC trend is why.

What This Framework Doesn't Tell You

None of this is a verdict on whether Apple's or Costco's stock was reasonably priced at any given moment. That's a separate question about what you pay for the cash flow, not about how the business allocates it, and it belongs with fair value analysis rather than here. A buyback can be capital-allocation-rational in exactly the way described above and still occur at a price too rich to create value for the shareholders who remain. But the price paid for those shares is a separate question from whether buying them back was the right call in the first place — this piece is only about the second question.

I'd also flag a limit to how cleanly this framework separates good capital return from a management team simply giving up too early. A rising buyback-to-capex ratio, on its own, doesn't prove the reinvestment opportunity set has actually narrowed — it's also exactly what you'd see from a company that stopped looking hard enough for the next above-hurdle project. The distinguishing evidence has to come from the return trend, not just the capital-allocation mix: Costco's rising ROIC alongside heavy reinvestment is real evidence its runway is still wide. Apple's persistently elevated ROIC alongside a shrinking reinvestment share is evidence its returns haven't suffered for the shift. A company buying back stock while its ROIC quietly erodes underneath is a different, much less reassuring story — worth checking before assuming a buyback-heavy posture is automatically the disciplined choice.

Key Takeaways

• High ROIC alone doesn't explain a buyback decision — Apple and Costco both post excellent returns on capital, yet one returns roughly ten dollars in buybacks for every dollar of capex and the other does the reverse. The reinvestment opportunity set, not steady-state ROIC, is what actually diverges.
• Apple's buyback-to-capex ratio widened from about 3.2-to-1 in fiscal 2013 ($23.0B buybacks vs. $7.3B capex) to roughly 10-to-1 in fiscal 2024 ($94.9B vs. $9.4B) as free cash flow outgrew the capital intensity of its remaining growth opportunities.
• Costco's ROIC climbed from about 14.7% in fiscal 2020 to roughly 21.3% in fiscal 2024 while capex ($4.7B) dwarfed buybacks ($500M) — evidence its reinvestment opportunities are still earning strong incremental returns, not running dry.
• The test for whether a buyback-heavy posture reflects discipline or exhaustion is the ROIC trend, not the buyback dollar amount by itself: rising or stable returns alongside heavy capital return is a healthy signal, while returns eroding under a buyback-heavy mix is a warning worth investigating.