Remember the see-saw: when a bond's price falls, its yield rises, and vice versa. Softer data usually pulls yields DOWN (traders expect easier policy, so they buy bonds and prices rise). Here the opposite happened at the long end because higher oil stokes inflation fears, and inflation is the enemy of long-dated bonds — investors demand a higher yield to be compensated. Long bonds have more 'duration', meaning their prices swing more for a given yield move, so the 30Y reacts most.

The 'yield curve' just plots yields from short to long maturities. A steeper, upward-sloping curve — long yields well above short ones — typically signals markets expect steady-or-higher growth and inflation over time, plus extra 'term premium' for locking money up longer. When the short end (2Y) is pinned by expectations for the Fed's policy rate while long yields rise on inflation/supply worries, the curve steepens. Beginners watch this because a steep curve is very different in message from an inverted one.

A credit 'spread' is the extra yield a company must pay over a same-maturity Treasury to compensate you for default risk. Tight spreads (like ~79bp) mean investors feel relaxed and are happy to lend cheaply; widening spreads mean fear is rising. Because bond prices move inversely to yields, a spread that widens pushes corporate bond prices down even if Treasury yields don't move. Watching spreads is how beginners gauge stress in the credit market before it shows up elsewhere.

'Refinancing' means replacing maturing debt with new borrowing. The rate a borrower pays depends on the base government yield PLUS its credit spread — so a firm coming off a big loss may face a wider spread and a higher coupon. Traders watch whether a large deal prices smoothly: strong demand keeps spreads tight and signals healthy credit appetite, while a struggling deal can nudge spreads wider across similar borrowers. This is the carry-and-credit mechanic in action, not a recommendation.

The BoJ owns a huge share of JGBs, so its holdings and Japan's inflation gauges shape where JGB yields sit. If producer prices run hot, markets lean toward the BoJ tightening, pushing JGB yields up and prices down. This matters globally through the 'carry trade': investors borrow cheaply in yen to buy higher-yielding bonds elsewhere; if JGB yields rise or the yen strengthens, that trade can unwind, rippling into US and European bond markets.

Gilts are UK government bonds and they don't move in isolation — when US Treasury and euro-area yields rise on inflation worries (here, higher oil), gilt yields usually follow, and because prices move inversely to yields, gilt prices tend to fall. Longer-dated gilts have more duration, so they'd move most. For a beginner: watch whether the BoE's policy-rate expectations and UK inflation data pull gilts in a different direction from the global trend — divergence there is what creates opportunities and risks, though nothing here is a buy/sell call.