Global Markets & Fixed Income

When bond prices rise, their yields fall — the two always move in opposite directions. Here, cheaper oil means traders expect less inflation, so they accept lower yields and bid up bonds. Because longer-dated bonds have more 'duration' (sensitivity to rate moves), a small yield drop lifts the 10Y and 30Y in price more than the short 2Y, which is why the long end often rallies hardest on good inflation news.

The 'yield curve' just plots yields across maturities. A normal upward slope means investors are paid more to lend for longer, compensating for inflation and uncertainty over time. Beginners watch the 2s10s gap because if short yields rise above long yields (an 'inversion'), it has historically signaled markets expect rate cuts and a slowdown ahead.

A credit spread is the extra yield a corporate bond pays over a 'risk-free' Treasury of the same maturity, compensating for default risk. When sentiment improves — like an easing geopolitical conflict — investors feel safer, so they accept a smaller spread, which means corporate bond prices rise. Widening spreads would signal the opposite: rising fear of defaults.

The BoJ has been a huge buyer of Japanese government bonds, so when it buys more it pushes prices up and yields down; tapering those purchases does the reverse. If the BoJ stays on a hiking path, JGB yields tend to drift higher (prices lower), and higher Japanese yields can pull money home and unwind the 'carry trade,' where investors borrow cheaply in yen to buy higher-yielding assets abroad.

For oil-importing countries, falling crude eases inflation and the trade deficit, which is bullish for local bonds — yields fall and prices rise. A stronger currency also helps foreign holders of those bonds, since their returns convert back into more of their home currency. This is why beginners see EM bonds rally on 'good news' that lowers imported-inflation risk.

Gilt yields and prices move inversely, just like Treasuries. Because lower oil reduces expected UK inflation, traders are willing to accept lower yields, lifting gilt prices. The UK is an oil importer, so cheaper energy is doubly helpful — it eases both inflation and the pressure on the Bank of England to keep rates high, which supports longer-duration gilts most.

Falling energy prices feed quickly into headline inflation, and bond investors care intensely about inflation because it erodes the fixed coupons a bond pays. When the inflation outlook softens, traders demand less yield to hold gilts, so prices rise — and they may price in earlier BoE rate cuts, which especially benefits longer-maturity gilts with more duration.