"For every pound Alphabet wanted to borrow, the market offered nearly ten back." That's the arithmetic behind one of the most striking debt deals of 2026: a £1 billion sterling century bond priced at a 6.125% coupon, spread at roughly +120 basis points over 10-year UK gilts, with the order book ballooning to somewhere between £9.5 and £10 billion, or about $14 billion in total bids. The yield landed at approximately 6.05%, the kind of tight print that only the cleanest corporate names can pull off.
The sterling tranche was just one piece of a far larger capital raise. Alphabet's total debt issuance crossed $31.5 billion, anchored by a $20 billion US dollar bond sale that at peak demand drew orders north of $100 billion. Swiss franc tranches were in the mix too. The century bond itself carries a particular historical footnote: no major technology company has issued 100-year paper since Motorola did it back in 1997, nearly three decades ago. Big Tech simply hadn't dared ask the market for that kind of commitment, until now.
The reason Alphabet is tapping every corner of the global bond market at once comes down to one number: $185 billion. That's the company's projected capital expenditure for 2026 alone, the majority of it pointed at AI infrastructure. Last year, Big Tech collectively issued $121 billion in AI-related debt during 2025, and Alphabet's latest move pushes the sector's borrowing well into this year. The comparison that keeps surfacing among bond analysts is to the railroad and utility buildouts of the nineteenth century, when long-duration debt sold to institutional investors financed the physical infrastructure of an entire era. The logic is the same now, just with data centers instead of track.
For portfolio managers weighing this against riskier assets, the implicit question is hard to ignore: why reach for volatile AI-adjacent tokens when a century coupon from Alphabet pays 6.125% in sterling? The crypto counterargument is just as blunt. A 100-year sterling bond carries real risks, currency depreciation over a century, inflation erosion, and the basic uncertainty of whether any corporation survives that long. Bitcoin has a fixed supply and no counterparty sitting on the other side of the trade. Traders will be watching how Alphabet's bonds move in the secondary market over the coming weeks. If the +120bps spread compresses further, it signals that institutional demand for AI exposure through conventional fixed income is still building rather than peaking.
This article is for informational purposes only and does not constitute financial or investment advice.
