Alphabet just convinced investors to lend it money for a hundred years. And those investors practically fought over the privilege.

The Google parent company priced a £1 billion 100-year sterling bond with a coupon rate of 6.125%, spread at roughly +120 basis points over 10-year UK gilts. The order book swelled to nearly 10 times the offered size, with bids reaching approximately £9.5 to £10 billion, or around $14 billion. In English: for every pound Alphabet wanted to borrow, investors offered nearly ten.

The biggest tech century bond in decades

This isn’t just a large bond sale. It’s the first major technology company to issue a century bond since Motorola did it back in 1997. That’s almost three decades of no Big Tech firm daring to ask the market for a 100-year commitment.

The sterling tranche was part of a much larger capital raise. Alphabet’s total debt issuance exceeded $31.5 billion, anchored by a $20 billion US dollar bond sale that generated orders surpassing $100 billion at peak demand. There were also Swiss franc tranches in the mix.

The yield on the century bond landed at approximately 6.05%. The +120bps spread over gilts reflects the kind of tight pricing that only the highest-quality corporate issuers can command.

Why now: the $185 billion AI spending spree

Alphabet has projected capital expenditure of $185 billion in 2026 alone. That figure is staggering even by Big Tech standards, and it explains why the company is tapping every corner of the global bond market simultaneously.

Big Tech collectively issued $121 billion in AI-related debt during 2025. Alphabet’s latest raise pushes the sector’s borrowing binge further into 2026.

These companies are essentially financing the next era of computing the same way railroads and utilities financed their buildouts a century ago: with long-duration debt sold to institutional investors hungry for yield and stability.

What this means for crypto and broader markets

The bond market is, in effect, offering institutional investors a way to gain exposure to AI’s growth trajectory through conventional securities. Why take on the volatility of crypto or AI-adjacent tokens when you can clip a 6.125% coupon from Alphabet for a century? That’s the implicit question this deal poses to portfolio managers.

For crypto advocates, the counterargument is straightforward: a 100-year bond denominated in sterling carries its own risks, including currency depreciation, inflation erosion, and the simple question of whether any corporation survives a full century. Bitcoin, by contrast, has a fixed supply and no counterparty risk.

Traders should watch how Alphabet’s bonds trade in the secondary market over coming weeks. If spreads tighten further from the +120bps level, it confirms that institutional demand for duration and quality remains insatiable. If the bonds cheapen, as some reports suggest happened by mid-2026, it could signal that the credit cycle is starting to turn.

The $185 billion capex target also has downstream effects worth monitoring. That spending flows into data centers, chip procurement, energy infrastructure, and networking equipment. When Alphabet and its peers are bidding aggressively for GPUs, power capacity, and cooling infrastructure, it raises costs for everyone in the compute-intensive economy, including proof-of-work miners and AI-focused blockchain projects.