Who actually owns the world's bonds?

Ask who owns stocks and the honest answer includes a lot of individuals. Ask who owns bonds and the answer is almost entirely institutions — and each of them is there for a specific, structural reason, not because they formed a view on interest rates.

This is the single most useful thing to know about the bond market: most of the money in it is not trying to be clever. It is there because a rule, a liability, or a regulation put it there.

Pension funds

A pension fund owes a stream of payments to retirees stretching decades ahead. Those obligations are known, long-dated, and non-negotiable. A bond that pays a fixed amount on a known date is the closest thing in finance to the mirror image of that obligation.

Pension funds are therefore the natural home for the longest bonds in existence. When a treasury issues 30-year or 50-year debt, it is largely issuing to them. The next lesson builds the arithmetic of why.

Insurance companies

Life insurers and annuity providers have the same structure with different labels. They collect premiums today and owe claims later, and regulators require them to hold assets that reliably cover those liabilities. Bonds dominate their portfolios by rule as much as by choice — insurance capital regimes charge far more capital for equities than for high-grade bonds.

Insurers are among the largest holders of investment-grade corporate debt in the world, and they are typically buy-and-hold. This is a substantial reason why so many corporate bonds barely trade after issue: their owners had no intention of trading them.

Banks

Banks hold government bonds for several overlapping reasons:

• Liquidity regulation. Post-2008 rules require banks to hold a buffer of high-quality liquid assets against deposit outflows. Government bonds are the definitional example.
• Collateral. Bonds are the currency of the repo market — the plumbing through which the financial system funds itself overnight.
• Capital rules. Risk weightings make sovereign bonds inexpensive to hold in capital terms.

A bank buying Treasuries is often satisfying a regulatory requirement, not expressing a view.

Central banks

Central banks hold bonds in two distinct capacities. As managers of foreign exchange reserves, they hold other countries' government debt — a large share of US Treasuries sits in official foreign hands for exactly this reason. And through quantitative easing, several major central banks bought vast quantities of their own government's bonds, becoming among the largest holders of their domestic markets.

A central bank buying bonds is executing policy. It is completely price-insensitive in the way a normal investor is not, and that fact has been a defining feature of bond markets since 2009.

Funds, ETFs and asset managers

Bond mutual funds and bond ETFs pool many investors and hold portfolios of hundreds or thousands of bonds. They are the main route through which individuals hold bonds at all, and they solve two real problems: minimum denominations that can run to €100,000, and the diversification you would need across issuers to make single-name credit risk tolerable.

They also introduce something genuinely new: a daily-traded wrapper around instruments that may not trade daily. That mismatch between the liquidity of the fund and the liquidity of its holdings is a structural feature worth understanding, and a topic later courses take seriously.

Individuals

Direct household ownership of individual bonds is small in most markets, concentrated in retail government programmes (US savings bonds, Japanese retail JGBs, Italian BTP retail issues) and in US municipals, where the tax exemption is aimed squarely at domestic individuals.

What this composition explains

Three consequences follow directly from the ownership list:

• Most bonds are bought to be held, not traded. Hence the thin secondary market of the previous lesson.
• Large parts of demand are rule-driven. Regulation and liability-matching create buyers who purchase because they must.
• The market's participants are mostly professional, which shapes its conventions — quoted in yields, traded by phone and platform, denominated in sizes that assume you are an institution.

Try it now

1. List the five main institutional owner types from memory and give each a one-line reason for being there. If you can do that, you understand bond demand better than most equity investors.
2. A large bond fund and the yield it is priced against, five years each. The first line is a price in dollars, the second a yield in percent. The inverse relationship between them is Unit 2's arithmetic, aggregated across hundreds of bonds at once.

3. Answer neutrally: why would a bank hold government bonds even if it had no view whatsoever on interest rates?