Rising Treasury yields set the tone this week. The 10-year Treasury yield reached its highest level since 2002, mortgage rates climbed past 7%, and oil stayed above $100 while diesel hit a record. Against that backdrop, a weak jobs report weakened the case for another Federal Reserve rate hike, and a closer look at the week’s stock moves showed why price alone rarely tells the whole story. Below, we separate the developments that matter for long-term investors from the headlines that don’t.
Long-Term Rates Hit a 24-Year High and Mortgage Rates Followed; Portfolio Construction Matters More Than Raising Cash
On Thursday, October 1, the yield on the 10-year Treasury reached 5.34%, its highest level since 2002, and Britain’s 30-year government bond yield touched 6% for the first time since 1998 [1]. Households feel this most directly through mortgages, which closely track the 10-year yield [2]. Freddie Mac’s average 30-year fixed mortgage rate rose to 7.28% this week, up from 6.34% a year ago [3] and the highest since November 2023 [2]. Realtor.com estimates the past year’s increase has added more than $200 to the monthly principal and interest payment on a median-priced home [2].
Stocks have absorbed the move unevenly. The S&P 500 slipped about 0.5% in September, while the Dow fell 4.3% [4]. The typical stock did worse than the index: the equal-weight version of the S&P 500 trailed the standard index by 4.6 percentage points, one of its three weakest relative months since 2003 [5]. Porter & Company responded by recommending less stock exposure [6].
For long-term investors, the question is how to respond. Moving heavily into cash turns one decision into two: when to get out and when to get back in. Getting either one wrong can mean missing a rally [6]. A sturdier response is a portfolio built so that the next move matters less. That means real diversification and, for bond holders, attention to duration [6]. Duration measures how sensitive a bond’s price is to changes in interest rates; generally, the higher the duration, the more the price moves when rates change [7]. Long-term Treasury funds show what that means in practice: the iShares 20+ Year Treasury Bond ETF (TLT) fell to record lows on September 30 [8]. What we’re watching is whether long-term yields keep climbing even as the job market cools.
Hiring Slowed Sharply in September, Cooling the Case for Another Fed Rate Hike
The U.S. economy added just 29,000 jobs in September, well below the roughly 84,000 economists expected, and the unemployment rate rose to 4.2% from 4.1%, the Bureau of Labor Statistics reported on Friday, October 2 [9]. August’s gain was also revised down, to 133,000 [10]. Part of the rise in the unemployment rate came from more people entering the labor force, meaning people working or actively looking for work, rather than from a jump in layoffs [9]. The rise was not evenly shared: the unemployment rate for Black workers jumped to 7.0% from 6.0% in August, a full percentage point, compared with a 0.1-point rise nationally [11].
The report lands at a sensitive moment. The Federal Reserve raised its benchmark rate in September for the first time since 2023 and signaled another increase this year [12]. A weaker job market undercuts the case for moving again at the October meeting. After the report, the 10-year Treasury yield fell to about 5.18% from its multiyear highs [10], and stocks opened higher as traders scaled back bets on an October hike [13].
One month of payroll data is noisy. Job growth has averaged about 80,000 a month in 2026 but has swung from a loss of 156,000 in February to a gain of 214,000 in March [14], and Fed officials watch the unemployment rate more closely than the headline payroll count [9]. What we’re watching is whether the next reports confirm a cooling labor market, and whether the Fed holds rates steady in October.
Oil Tops $100 Again as Iran Peace Talks Stall, and Record Diesel Prices Raise Inflation Pressure
Oil prices jumped at the start of the week after President Trump rejected an Iranian proposal to end the conflict and reopen the Strait of Hormuz. Brent crude, the international oil benchmark, rose above $107 a barrel on Monday, September 28 [15]. It has spent most of September above $100 [16]. The Strait matters because roughly a fifth of the world’s oil supply passes through it in peacetime [17].
The pressure is sharpest in diesel, the fuel that moves trucks, farm equipment, and freight. The national average hit a record $6.53 a gallon in September, and President Trump said his administration is “very seriously” considering a ban on diesel exports [18]. Analysts warn that a ban could lower diesel prices briefly but raise gasoline prices if it forces refiners to cut output [18]. The administration is also pressing European governments to release emergency diesel stockpiles [19].
For investors, energy prices feed directly into inflation, and oil-driven inflation and Middle East tensions were among the reasons the Fed gave for that September rate increase [12]. Oil has also swung sharply on headlines about a possible deal [16], which makes inflation, and therefore interest rates, harder to predict. What we’re watching is whether diesel prices ease and whether talks produce a credible path to reopening the Strait.
Two Land-Rich Real-Asset Stocks Sit at Steep Discounts for Opposite Reasons
Timber real estate investment trusts, companies that own and typically operate income-producing real estate [20] (in this case, timberland), depend on housing and construction demand, and that demand has softened. Housing starts fell 2.6% in August, and building permits, a sign of future construction, fell 2.7% [21]. On September 24, Weyerhaeuser lowered its third-quarter outlook for its wood products business [22] to about $30 million below the second quarter, citing higher fuel costs [23]. Its shares hit a new 52-week low near $20 on Monday, September 28 [24], about 28% below their 52-week high [25]. Rayonier, which completed its combination with PotlatchDeltic in January [26], hit its own 52-week low the week before [27].
Texas Pacific Land shows the opposite case. The company owns roughly 894,000 surface acres in West Texas [28] and collects royalties on oil and gas produced on its land without paying to drill [29]. Its business is doing well: in the second quarter it reported record revenue, net income, and royalty production [30]. Yet its stock closed Monday about 38% below its 52-week high [31]. Much of the run to that high came during a surge earlier this year, when oil prices jumped with the Iran war [32].
The distinction for investors is that a stock at a 52-week low is cheaper than it was, which is not the same as cheaper than it is worth [33]. Sometimes the business has weakened, as timber’s softer demand suggests. Sometimes the business is fine and the price had simply run ahead of it. Telling the two apart, by checking cash flow at ordinary prices rather than boom-time prices [33], is the real work. What we’re watching is whether housing demand recovers and whether TPL’s record production holds as oil prices swing.
NVIDIA’s 800-Volt Shift Could Change Who Captures the Economics of AI Power
Power has to be converted before AI chips can use it, and NVIDIA is changing where that conversion happens. Its newer designs move some conversion outside the computing rack, using 800 volts of direct current to carry power more efficiently for more of the trip before stepping it down near the chips [34]. Direct current is electricity that flows in a single direction, as it does from a battery [35]. According to NVIDIA’s August 11 update, a hybrid power rack that works with existing facilities is targeted for the second half of 2026, and a row-level power center is expected in 2027 [34]. These are rollout plans, not evidence of installations [36].
A design change like this can improve customers’ economics while changing which suppliers earn the money [36]. NVIDIA lists Monolithic Power Systems among the companies collaborating on the initiative [37]. That argues against treating Monolithic as an automatic casualty, though participation is not a sales guarantee [36]. Eaton and Vertiv, which supply power distribution and cooling, also appear in the 800-volt ecosystem [37]. Eaton has added liquid cooling through its Boyd Thermal acquisition [38].
Vicor illustrates a different way to get paid. On September 30, it raised its guidance, the company’s own forecast of future results [39], to more than 30% sequential growth for the third quarter [40]. That followed a September 21 raise from nearly 10% to more than 20% [41]. Vicor attributed the increases to royalties from its first nonexclusive license [40], meaning Vicor can license the same technology to other companies as well [42]. It also said four leading companies had secured licenses to its power technology [41]. Licensing lets Vicor earn from the use of its technology, not only from the modules it makes [36]. The figure is guidance rather than reported revenue, and Vicor has not disclosed customers or royalty rates [41].
Farther upstream, power producers and grid companies depend less on any particular rack design. Constellation Energy completed its Calpine acquisition on January 7, creating a 55-gigawatt fleet that includes nuclear, gas, and other generation [43]. A gigawatt is one billion watts [44]. Upstream companies such as Constellation, Quanta Services, and GE Vernova carry a different risk: a proposed data center pays no one until it is funded, connected, and built [36]. Across all three layers, the question for investors is which companies’ roles become more valuable, not simply which ones are attached to AI spending. What we’re watching is whether the new rack designs reach actual installations, whether Vicor’s guidance shows up in reported results, and whether announced projects turn into signed, profitable work.
“Buy AI” Versus “AI Bubble”: Picking a Side Is the Wrong Question for a Portfolio
At the Porter & Company annual conference, one speaker made the case for owning AI stocks, while another warned of a bubble about to burst [45]. Both arguments draw attention, and both can contain truth at the same time. AI could transform the economy while some AI stocks turn out to be terrible investments, and prices could be stretched and still go higher [45].
What the debate leaves out is that recognizing a risk and knowing when it will matter are different skills. Someone who called the last crash does not automatically know when the next one arrives [45]. Neither forecast tells an investor how much to own, which is why the debate is noise for a portfolio. What matters instead is a process that holds up when a prediction turns out wrong [45].
Inflation “Cooled” in August Largely Because the Government Changed How It Measures Some Prices
You may have seen headlines saying inflation cooled in August. The Federal Reserve’s preferred inflation gauge came in at 3.4%, below the 3.7% economists expected [46]. If that didn’t match what you’re seeing at the gas pump or in your mortgage quotes, there’s a reason.
Much of that cooling came from a once-a-year update to how the government measures certain prices, such as software and investment-management fees, which also lowered the readings for earlier months [47], [48]. Measured the same way, inflation was unchanged from July: 3.4% overall, and 3.0% excluding food and energy [48]. Meanwhile, the costs most households feel kept climbing. Diesel hit a record in September [18], and mortgage rates rose above 7% [3].
The takeaway is simple: a change in how something is measured is not a change in what you pay. We’d want to see several months of slower price increases, measured the same way, before calling inflation truly cooler. In the meantime, it’s worth keeping a plan that accounts for prices staying higher for a while.
Frequently Asked Questions
Why do mortgage rates rise when Treasury yields rise?
Mortgage rates tend to follow long-term Treasury yields, especially the 10-year, rather than the Federal Reserve’s short-term rate [2]. Lenders and the investors who buy mortgages compare what a home loan pays with what they could earn on government bonds, so when Treasury yields climb, mortgage rates usually climb with them. This week showed the link clearly: the 10-year yield reached 5.34% [1], and Freddie Mac’s average 30-year fixed rate rose to 7.28% [3]. For anyone buying a home or weighing a refinance, watching bond yields can say more about borrowing costs than watching Fed meetings alone.
Why did stocks rise after a weak jobs report?
A weak jobs report can lift markets when investors think it will keep the Federal Reserve from raising interest rates. Higher rates make borrowing more expensive and can weigh on both stock and bond prices, so anything that lowers the odds of another hike can be welcome in the short run. After September’s report showed just 29,000 new jobs [9], the 10-year Treasury yield fell and stocks opened higher as traders scaled back bets on an October hike [10], [13]. The longer-term question is different: a labor market that keeps weakening would eventually matter more than one month of relief on rates.
How do higher oil prices affect inflation and interest rates?
Higher oil prices raise costs throughout the economy, not just at the gas pump. Diesel moves trucks, farm equipment, and freight, so when it hit a record $6.53 a gallon in September [18], businesses faced higher costs that can show up later in the prices of everyday goods. That is why central banks watch energy closely. The Fed listed oil-driven inflation and Middle East tensions among the reasons for its September rate increase [12]. For investors, this means oil can influence interest rates, and therefore bond prices and stock valuations, even for companies that have nothing to do with energy.
Does a 52-week low mean a stock is a bargain?
Not necessarily. A 52-week low only means a stock is trading at its lowest price of the past year, and that says little on its own about whether the business behind it is healthy. This week offered two examples. Weyerhaeuser hit a new 52-week low [24] as housing activity softened and the company lowered its wood products outlook [21], [23]. Texas Pacific Land sat roughly 38% below its high [31] even after reporting record results [30]. The first case points to a weaker business; the second, to a price that had run ahead of a strong one. Telling the difference takes a look at cash flow, not just the chart.
What makes a market development “news” rather than “noise” for investors?
News is a development that changes the long-term picture for a company, an industry, or the economy. Noise is a headline or reaction that draws attention but does not change that picture much. This week, the jump in long-term yields was news, because it directly raised borrowing costs for households, including mortgage rates above 7% [3]. By contrast, the headline that inflation cooled in August was largely noise, since much of the improvement came from a change in how prices are measured [47], [48]. Sorting developments this way helps investors respond to what matters instead of reacting to every headline.
The Throughline
Viewed together, this week’s developments point to one theme: the cost of money is rising, and the forces behind it are real. Long-term Treasury yields, not the Federal Reserve’s short-term rate, set the tone for mortgages and long-term bonds, and those yields reached levels not seen in more than two decades. Oil and diesel explain part of the pressure, because energy feeds inflation, and inflation keeps the Fed cautious. A soft jobs report offered a counterweight, but one month of data rarely settles anything.
The week also offered reminders about reading headlines carefully. A stock at a 52-week low can signal a weakening business or simply a price that got ahead of itself. An inflation report can look better because of a change in measurement. The AI spending boom is real, but what matters is which companies’ roles become more valuable, and the loudest debate, buy or bubble, doesn’t tell anyone how much to own. What remains unresolved is whether higher long-term rates persist even as the economy cools. That is a reason to focus on how a portfolio is built rather than on predicting the next move.
The week’s message is that rising long-term rates are reshaping what it costs to borrow, and that many of the loudest headlines tell only part of the story. What we’re watching next is whether long-term Treasury yields keep climbing even as hiring slows, because that tension will shape mortgage rates, bond prices, and stock valuations in the months ahead.
What does this mean for your plan?
If you’d like to talk through what these developments mean for your own plan, our team is here to help.
Talk With Our TeamSources & References
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