Back Below 5%: Why Bonds Did Their Job When Tech Sold Off

Earlier this week we wrote about the "5% world": the moment when safe government debt began paying more than 5% a year, raising the bar for every other asset. On Thursday 22 October, that story took a turn. As technology stocks fell sharply, investors moved into US Treasuries, and the benchmark 10-year yield dropped back below 5% for the first time in a month.

It was a useful reminder of why bonds sit in a diversified portfolio in the first place.

What happened

On 22 October, the Nasdaq Composite fell 2.6%, its worst day since June, as investors questioned whether heavy spending on artificial intelligence would earn an adequate return. Meta fell about 7% after raising its capital spending guidance.

At the same time, US government bonds rallied:

Ranges reflect slightly different closing snapshots across data providers.

The 10-year yield had reached 5.36% the week before. Thursday's close below 5% was its first since 23 September. Only a day earlier, the US Treasury sold $13bn of 20-year bonds at a yield of 5.469%, the highest for that auction since 1986.

Why yields fell even as oil rose

What made the move notable is that oil rose on the same day. Brent crude climbed above $111 a barrel on reports that the US and Israel were weighing renewed strikes on Iran, and on Houthi attacks on Saudi Arabia. Higher oil normally pushes inflation expectations, and yields, up.

This time the flight to safety won. When growth worries and equity losses dominate, investors often buy the most liquid, highest-quality asset available, and for global capital that is still US Treasuries.

A quick refresher: prices and yields

Bond prices and yields move in opposite directions. A bond pays a fixed coupon. If investors bid up its price, the fixed coupon becomes a smaller percentage of what they pay, so the yield falls. A drop of about 15 basis points in the 10-year yield means the price of existing 10-year bonds rose on the day, cushioning portfolios that held them while equities fell.

Longer-dated bonds move more for each change in yield. This sensitivity, known as duration, works in both directions: it helps on days like Thursday and hurts when yields climb.

The role of high-quality bonds

Thursday showed the classic job of government bonds in a portfolio:

1. Shock absorber. When riskier assets fall, high-quality bonds often rise, smoothing overall returns.
2. Income. With yields near 5%, bonds now pay a meaningful income while you hold them, something investors could not say for most of the past decade.
3. Liquidity. Treasuries can be sold quickly in almost any market, which is why they are the first stop in a sell-off.

This relationship is not guaranteed. In 2022, stocks and bonds fell together as inflation surged and rates rose quickly. Diversification reduces risk; it does not remove it.

The Gulf angle: sukuk

For investors in the Gulf, sukuk play a similar role to conventional bonds, with Sharia-compliant structures that pay profit rather than interest. Their pricing is closely tied to US Treasury yields, both because of dollar pegs across the region and because many sukuk are issued in US dollars. Moves in the Treasury market therefore feed directly into sukuk valuations and new issuance costs for Gulf governments and companies.

What to watch next

• The Fed decision on 28 October and US PCE inflation on 29 October will test whether yields can stay below 5%.
• Oil and geopolitics. If energy prices keep rising, inflation concerns could push yields back up.
• Equity sentiment. Further tech weakness could keep demand for safe assets strong.

The investor's takeaway

A single day does not make a trend, and yields remain high by the standards of the past 15 years. But Thursday was a clear example of portfolio construction at work: the asset many investors hold for stability provided it when it was needed. The question for any investor is not whether bonds will always rise when stocks fall, but whether their portfolio has a source of stability at all.

Sources

• investingLive, 22 October market wrap
• Briefs, Treasuries rally
• Yahoo Finance, 22 October market close
• investingLive, 20-year auction