The Market Behind the Stock Market
Government bond markets are larger than equity markets by traded volume, and they're constantly voting on the same question stock indices care about: where are rates headed next. This lesson explains how to read that vote.
What a government bond is
A loan to a government: the buyer pays a price today in exchange for regular interest payments (the coupon) and the loan's face value back at maturity. Bonds range from a few months to 30+ years — the two maturities equity markets watch most closely are the 2-year and 10-year Treasury.
Bond price vs yield
Trips up almost every beginner the first time: bond prices and yields move in opposite directions.
🎯 When bond prices fall, yields rise. When prices rise, yields fall. They're two sides of the same coin — not two separate things that happen to correlate.
📊 A bond pays a fixed coupon. If its price falls because investors are selling, that same fixed coupon now represents a larger percentage return relative to the lower price — which is exactly what a "higher yield" means. The coupon didn't change; the price did.
2-year and 10-year yields
The 2-year yield tracks near-term Fed policy expectations — what the market thinks rates will average over the next two years. The 10-year reflects longer-run growth, inflation and policy expectations, and is the yield that matters most for discounting the far-future earnings that growth and tech valuations depend on.
Because 2-year yields track near-term rate expectations so closely, they're one of the most direct bond-market proxies for "what does the market think the Fed does next."
Yield curve
Plots yields across all maturities, short to long. Under normal conditions it slopes upward — longer-dated bonds pay more, compensating investors for locking up money longer and for added uncertainty.
Yield-curve inversion
An inversion happens when short-term yields rise above long-term yields — the curve slopes down instead of up. It typically occurs when the Fed has pushed short rates up to fight inflation, while the bond market's long-term expectations reflect a belief that growth (and future rates) will need to come back down. A 2-year/10-year inversion has historically been one of the most closely watched recession warning signals in financial markets.
ℹ️ An inverted curve doesn't mean a recession is happening right now — it reflects the bond market's forward-looking bet that growth and inflation will cool enough that rates will need to fall later.
Real yields
A real yield subtracts expected inflation from the nominal yield. It matters enormously for equity valuations and other assets too — rising real yields pressure gold and other non-yielding assets (holding them means giving up a growing real return elsewhere), while also raising the bar a stock's expected return has to clear to look attractive by comparison.
Why indices react to bond-market changes
Yields are a continuously updating market price on rate expectations — updating every session, well ahead of the next scheduled Fed meeting. Because index valuations are so tied to the discount-rate mechanism, traders watch yields as one of the most direct, real-time gauges of rate-sensitivity pressure on stocks.
📊 An index can move on a quiet day with no data release simply because the 10-year yield moved meaningfully — the discount-rate assumption behind every growth stock's valuation just shifted.
🚫 Don't only watch the calendar for scheduled releases. Yields move continuously and often front-run the data — a meaningful yield move can show where pressure on growth-stock valuations is shifting before the next headline confirms it.