Rates and tech can’t both keep climbing

The big picture
- Two things are rising together: interest rates and technology stocks. That pairing rarely lasts.
- The numbers since April: the Nasdaq 100, an index of large technology-heavy companies, is up about 31%. The 10-year yield, the interest rate the US government pays to borrow for 10 years, is up about 23% from its starting level.
- Why it matters: higher rates raise borrowing costs and usually weigh on share prices. If rates keep making new highs, they are likely to slow or end the stock market rally.
- The other possibility: rates settle down on their own, and tech keeps rising.
- Bottom line: one of the two has to give, so investors should be prepared for either outcome.

‘Since April, tech stocks and interest rates have climbed together, and rates have sped up since September. History suggests one of them has to give.’ Note: ‘The chart shows percentage change since April. The yield has risen by about 23% of its starting level, not by 23 percentage points.’
What the chart tells us
- Tech did most of its climbing early: the bulk of the Nasdaq’s gain came in April and May. From June to mid-September it moved sideways while rates kept rising.
- The risk is in the last six weeks: rates accelerated in September, and the Nasdaq broke out to new highs at the same time.
What could change the trend
- Tech earnings: companies report their profits every three months, and the next round starts in mid-October. After a run this large, expectations are very high. Even good results can disappoint if they fall short of what investors hoped for, and that could cool the rally.
- An economic slowdown: weaker growth would normally pull rates lower.
Where the damage is showing
- Rate-sensitive sectors are struggling: areas such as housing, consumer discretionary (non-essential spending such as retail and travel) and mining stocks, such as uranium miners have been hurt by higher yields and energy prices.
- Bonds remain weak: bond prices fall when yields rise, and a recent attempt at a recovery has failed.

‘Technology has led the market this year. Sectors that depend on low borrowing costs have fallen behind, and higher energy costs have added pressure on miners.’
Why rates may be closer to a peak
- Sentiment is very negative: markets often turn when most investors have given up on a change.
- Yields look stretched: the Relative Strength Index (RSI) measures how stretched a move is on a scale of 0 to 100. Readings above 70 are called ‘overbought’, meaning the rise may be overdone. The RSI on the 10-year yield is currently near 71.
- High rates cure high rates: expensive mortgages slow housing sharply. That drags on the economy and eases inflation, which in time pulls rates down.
- A caution: stretched markets can stay stretched. No one can pick the exact peak.

‘The lower panel shows RSI. A reading above 70 means yields have risen very fast and may be due to ease.’
Meanwhile, in technology
- AI chip stocks keep making all-time highs: the leading sector of the year is still leading.
- A warning sign: when Wall Street grows more optimistic and starts giving trades catchy names, enthusiasm is often running hot.

Chip stocks have more than tripled since April 2025 and are closing in on their June high. In the lower panel, RSI has just turned down from the 70 ‘overbought’ line, an early sign the rally may be losing steam.’
General suggestions for investors
- Avoid chasing: buying a sector after a long run to record highs carries more risk than buying it earlier.
- Buy in steps: if you want to add to a beaten-down area such as bonds, consider ‘scaling in’, which means buying in small amounts over several weeks instead of all at once.
- Keep a watch list: rate-sensitive sectors tend to bounce when rates stop rising. Know which ones interest you before the turn comes.
- Wait for evidence: look for signs that rates have peaked before committing new money to those sectors.
- Check your balance: make sure no single sector, including technology, has grown too large a share of your portfolio.
A final note
- Expecting a turn does not make it happen: markets can take far longer than anyone expects.
- Time is the hard part: waiting wears down investors who try to catch the turn aggressively.
- Stay patient: keep positions small and avoid any move that could do serious damage.
Stay tuned!
Martin
































