Introduction: A Week When Almost Everything Went Wrong—Except the Stock Market
Wall Street experienced an extraordinary week between November 9 and November 13, 2026.
Inflation came in hotter than expected. Treasury bond prices declined as yields climbed above 5%. Nvidia, one of the most influential companies in the artificial intelligence industry, faced a major leadership crisis.
Yet despite these developments, the major U.S. stock indexes finished the week higher.
The S&P 500 gained approximately 2.5%, the Nasdaq Composite advanced 2.3%, and the Dow Jones Industrial Average rose 2.1%, according to the weekly figures supplied.
Canada’s S&P/TSX Composite also advanced, finishing Friday at 36,105.90.
The week’s most dramatic corporate story involved Nvidia. Shares of the semiconductor giant reportedly fell nearly 13%, erasing more than $570 billion in market capitalization.
Meanwhile, several of Nvidia’s competitors rallied, and CoreWeave’s strong financial outlook suggested that demand for AI computing infrastructure remains substantial.
Microsoft also experienced a major cloud-services outage that disrupted businesses and government operations worldwide.
The central lesson of the week: The stock market can rise even when economic uncertainty increases, because investors are constantly balancing risks against future opportunities.
1. How the Major Stock Indexes Performed
Weekly Stock Market Performance
November 9–13, 2026 | U.S. & Canada
+316.81 points
U.S. weekly returns are from the supplied weekly report. TSX return is calculated from the November 6 and November 13 closing levels used in this newsletter series.
| Index | Weekly change | Friday close |
|---|---|---|
| Dow Jones Industrial Average | +2.1% | Not independently confirmed |
| S&P 500 | +2.5% | Not independently confirmed |
| Nasdaq Composite | +2.3% | Not independently confirmed |
| S&P/TSX Composite | +0.89% | 36,105.90 |
The S&P 500 led the major U.S. indexes, followed by the Nasdaq and Dow.
Canada’s TSX also posted a positive weekly return, although its advance was smaller than those of the major American benchmarks.
Why did stocks rise despite the bad news?
Financial markets are forward-looking.
Investors are not simply evaluating what happened today. They are continuously reassessing expectations for corporate earnings, economic growth, and future interest rates.
Some of this week’s news was negative, but other developments were encouraging.
CoreWeave’s earnings demonstrated continued demand for AI computing infrastructure.
Nvidia’s competitors benefited from renewed investor interest.
And despite concerns about inflation, investors appeared willing to continue buying equities.
The result was a week in which significant risks coexisted with positive overall market performance.
2. Inflation Surprises Wall Street and Revives Rate-Hike Fears
U.S. Inflation: October 2026
Reported consumer and producer price changes
Consumer inflation (CPI)
+0.4%
Monthly · Forecast +0.3%
Producer inflation (PPI)
+0.3%
Monthly · Forecast +0.4%
Annual producer price inflation
+6.5%
Inflation was one of the most important economic stories of the week.
The October Consumer Price Index showed that consumer prices increased 0.4% from the previous month, exceeding economists’ expectation of 0.3%.
The difference may appear small, but financial markets react strongly when economic data differs from expectations.
A hotter-than-expected inflation report suggests that the Federal Reserve may need to keep monetary policy restrictive for longer.
Why inflation remains a concern
Inflation reduces the purchasing power of money.
When consumer prices increase, households must spend more to maintain the same standard of living.
Businesses may also face higher costs for materials, labor, energy, and transportation.
Persistent inflation creates uncertainty for consumers, businesses, and investors.
It can also influence central bank decisions.
Wholesale inflation adds to the picture
Friday’s Producer Price Index report offered mixed signals.
Wholesale prices increased 0.3% in October, slightly below the 0.4% forecast.
However, the annual increase of 6.5% suggested that price pressures remained substantial.
Producer prices matter because businesses sometimes pass higher costs along to consumers.
The combination of elevated consumer and producer inflation reinforced concerns that price pressures could remain difficult to control.
3. Treasury Yields Climb Above 5%
U.S. 10-Year Treasury Yield
5.17%
Reported Friday intraday high
Why it matters: Rising bond yields increase borrowing costs and make expensive growth stocks more vulnerable to changes in investor expectations.
Government bonds experienced substantial selling pressure during the week.
As bond prices declined, yields rose.
The benchmark 10-year U.S. Treasury yield climbed above 5%, reaching a reported intraday high of 5.17% Friday.
Why bond prices and yields move in opposite directions
When an existing bond pays a fixed amount of interest, its effective yield changes as its market price changes.
If investors sell bonds and their prices decline, the yield available to a new buyer increases.
This relationship helps explain why bond-market selloffs can lead to higher borrowing costs throughout the economy.
Why higher yields matter for stocks
Government bonds compete with stocks for investors’ money.
When relatively low-risk Treasury securities offer attractive yields, investors may demand higher potential returns from equities.
This can put downward pressure on stock valuations.
Growth companies are particularly sensitive because much of their expected profitability may lie years in the future.
Higher interest rates reduce the present value of those future profits.
The Federal Reserve’s next move
The inflation reports increased expectations that the Federal Reserve could raise interest rates in December.
According to the supplied reporting, one Fed official even discussed the possibility of a half-percentage-point increase.
That would be larger than the recent quarter-percentage-point moves.
However, a larger increase remains a possibility rather than a confirmed decision.
The Federal Reserve will continue evaluating economic data before its next policy announcement.
4. Nvidia’s Leadership Crisis Wipes Out More Than $570 Billion
Nvidia dominated the corporate headlines this week.
According to the supplied report, CEO Jensen Huang resigned Thursday following allegations concerning multiple personal relationships.
The reports included an alleged relationship involving an employee and another person described as a suspected Chinese intelligence operative.
These allegations have not been independently established in this recap and should not be treated as proven facts.
Nvidia shares reportedly declined nearly 13% for the week, erasing more than $570 billion in market capitalization.
Why Jensen Huang mattered so much
Huang helped build Nvidia from a graphics-chip company into one of the most influential businesses in the global technology industry.
Under his leadership, Nvidia became a dominant supplier of processors used to train and operate advanced artificial intelligence systems.
The company’s technology is now central to major AI infrastructure projects.
Huang’s strategic vision, relationships, and reputation were closely associated with Nvidia’s success.
For investors, the sudden loss of such an influential leader creates uncertainty.
The bullish argument
Despite the leadership controversy, Nvidia’s underlying business may remain strong.
The supplied report indicates that demand for its AI chips continues exceeding supply.
The company also reportedly holds nearly $100 billion in cash.
Some analysts believe new leadership could improve financial discipline.
Nvidia has made substantial investments in AI companies and infrastructure providers.
A new CEO might reduce some of those investments and return more capital to shareholders.
This could potentially improve cash flow and capital allocation.
The bearish argument
Other investors see greater risks.
Nvidia’s investments in AI companies may have helped create demand for its products.
Reducing those investments could weaken parts of the ecosystem that support Nvidia’s growth.
Higher interest rates could also make it more expensive for AI developers to finance large computing projects.
Additionally, the supplied report indicates that congressional investigations may be forthcoming, including inquiries involving national security, technology, and China.
The scope and consequences of any such investigations remain uncertain.
What happens next?
Investors will be watching Nvidia’s earnings, succession planning, and strategic direction.
The central question is whether Nvidia’s competitive advantages are sufficiently institutionalized to survive the departure of its longtime leader.
A successful company should ultimately be stronger than any single executive.
5. Nvidia’s Rivals Rally as Investors Look Elsewhere
Semiconductor Stocks: Weekly Performance
November 9–13, 2026 | Approximate Returns
While Nvidia experienced a difficult week, several of its competitors delivered substantial gains.
AMD advanced approximately 19%.
Micron rose about 13%.
Intel gained roughly 6%.
These gains suggest that investors did not abandon the semiconductor industry.
Instead, some appeared to reconsider which companies might benefit most from continued AI investment.
Why competitors can benefit
When an industry leader experiences uncertainty, investors may reassess the competitive landscape.
Customers may also consider diversifying suppliers to reduce dependence on a single company.
AMD competes in processors and AI accelerators.
Micron supplies memory products that are important for advanced computing.
Intel participates in processor design and semiconductor manufacturing.
These companies have different business models and competitive challenges, but all are exposed to aspects of the global computing industry.
The contrast between Nvidia’s decline and its rivals’ gains illustrates an important principle.
A company-specific crisis does not necessarily mean that an entire industry is in trouble.
6. CoreWeave Gains 14.5% as AI Computing Demand Remains Strong
CoreWeave was another major winner this week.
Shares of the AI cloud computing company reportedly gained 14.5% after it delivered stronger-than-expected revenue and an encouraging business outlook.
The company also reported a backlog approaching $133 billion in future business.
What does CoreWeave do?
CoreWeave operates specialized cloud computing infrastructure.
It purchases advanced processors, installs them in data centers, and rents computing capacity to companies developing artificial intelligence systems.
Its customers and partners include major participants in the AI industry.
This business model allows AI developers to access substantial computing resources without necessarily building all the infrastructure themselves.
Why the backlog matters
A backlog represents contracted future business that has not yet been recognized as revenue.
CoreWeave’s reported backlog suggests significant demand for its services.
However, backlog is not the same as cash in the bank.
The company must still deliver services, operate its infrastructure, and collect payments.
It must also finance substantial investments in processors, electricity, buildings, and networking equipment.
The bigger investment lesson
CoreWeave’s results provided reassurance that demand for AI computing remains strong.
However, rapid revenue growth does not automatically guarantee attractive shareholder returns.
Investors must also consider profitability, debt, capital expenditures, and competitive pressures.
The company may benefit from the AI boom, but its financial success will depend on converting demand into sustainable cash flow.
7. The Nasdaq’s Remarkable Recovery
The Nasdaq experienced an extraordinary reversal during the week.
According to the supplied report, a major selloff the previous Thursday had erased approximately $2.5 trillion in market value.
Yet by Wednesday, November 11, the index had recovered nearly all those losses.
This recovery was driven partly by renewed optimism surrounding AI infrastructure spending.
What explains such rapid changes?
Stock prices reflect expectations about the future.
When investors become fearful, they may sell quickly.
When new information challenges those fears, buying can return just as rapidly.
The result can be dramatic market reversals.
This is particularly common in sectors with high valuations and uncertain future earnings.
Why long-term investors should pay attention
Investors who attempt to predict every short-term market movement face a difficult challenge.
The same market can decline sharply one day and recover the next.
Missing a few strong trading sessions can have a meaningful effect on long-term returns.
This is one reason many investors prefer a diversified portfolio and a disciplined investment strategy rather than frequent attempts to time the market.
8. Canada: TSX Gains Approximately 0.89% for the Week
Canada’s S&P/TSX Composite finished Friday at 36,105.90.
Based on the previous Friday’s closing level of 35,789.09, the index gained approximately 0.89% for the week.
S&P/TSX Composite — Weekly Performance
November 6 close
35,789.09
November 13 close
36,105.90
Weekly point change
+316.81
Weekly percentage change
+0.89%
Why Canada underperformed the U.S.
The Canadian market has a different composition from the major U.S. indexes.
Canada has substantial exposure to banks, energy producers, mining companies, and other resource-related businesses.
The U.S. market has a larger concentration of major technology companies.
This difference can lead to different performance patterns.
During periods of strong technology-sector gains, U.S. indexes may outperform Canada.
When energy and materials companies perform well, Canada’s market can sometimes benefit.
What Canadian investors should watch
Higher U.S. Treasury yields can influence Canadian financial conditions.
Energy prices remain important for Canadian producers.
Global economic growth affects demand for Canadian commodities.
And the Canadian dollar can influence returns for investors holding U.S. assets.
For Canadians, geographic diversification remains an important portfolio consideration.
9. Microsoft Outage Disrupts Businesses Across the World
Microsoft experienced a major disruption this week when an outage affected several of its workplace services.
According to the supplied report, the disruption affected Outlook, Teams, Copilot, and other Microsoft services.
Hundreds of thousands of users reportedly experienced problems across more than 70 countries.
Some employees joked that the outage felt like an unexpected holiday.
For businesses and governments, however, the disruption created serious operational challenges.
Who was affected?
The supplied report identified several organizations experiencing difficulties.
Shipping company Maersk encountered problems sending certain emails and notifications.
Congressional staff on Capitol Hill reportedly lost access to Outlook services.
Companies including OpenAI and Anthropic also experienced problems involving Microsoft integrations.
These disruptions illustrate how dependent modern organizations have become on cloud computing infrastructure.
Why this matters for Microsoft
Microsoft 365 includes widely used workplace products such as Outlook and Teams.
According to the supplied report, the business generated nearly $28 billion in quarterly revenue, representing approximately 30% of Microsoft’s total revenue.
Microsoft shares reportedly declined about 1.3% during the week.
The outage raises important questions about reliability, redundancy, and the risks of concentrating essential business operations within a small number of technology providers.
An investment lesson from the outage
Modern cloud services create enormous productivity benefits.
However, they also introduce systemic risks.
When millions of businesses depend on the same technology infrastructure, a single major disruption can have widespread consequences.
Companies may need backup systems and contingency plans.
For investors, reliability and customer trust are important components of a technology company’s long-term competitive position.
10. The Week’s Biggest Winners and Losers
The Week’s Biggest Winners and Losers
November 9–13, 2026 | Selected Stocks
The contrast between Nvidia and its competitors was striking.
Nvidia lost approximately 13%, while AMD gained nearly 19%.
CoreWeave advanced 14.5%, and Micron gained about 13%.
Microsoft declined modestly amid its service disruption.
These divergent returns illustrate why investors should avoid assuming that all companies in the same industry will perform similarly.
11. What Investors Should Watch Next Week
Nvidia’s earnings and leadership transition
Investors will be watching for evidence that demand for AI chips remains strong and for clarity about the company’s future leadership.
Federal Reserve policy
Will additional economic data strengthen expectations for a December rate hike?
Treasury yields
Will the 10-year yield remain above 5%, or will the bond market stabilize?
AI infrastructure demand
Can companies such as CoreWeave continue translating growing demand into sustainable revenue and profits?
Cloud computing reliability
Will Microsoft’s outage prompt businesses to reconsider their dependence on centralized cloud services?
12. The Biggest Investment Lesson of the Week
This week’s events demonstrate that financial markets are complex systems influenced by many different forces.
Inflation was higher than expected.
Bond yields increased.
One of the world’s most influential technology companies faced a leadership crisis.
Yet the major U.S. stock indexes finished the week higher.
How can that happen?
Because markets do not respond to a single variable.
Investors constantly compare risks with opportunities.
They evaluate future earnings, economic growth, interest rates, valuations, and alternative investments.
A negative development for one company may create an opportunity for another.
A leadership crisis at Nvidia may benefit competitors.
Higher interest rates may hurt growth stocks while creating opportunities for investors seeking income.
Strong AI infrastructure demand may support companies such as CoreWeave even when semiconductor valuations are under pressure.
Three principles worth remembering
First, separate the performance of an industry from the performance of individual companies.
Artificial intelligence can continue growing even when Nvidia’s stock declines.
Second, understand the role of valuation.
A wonderful business can be a disappointing investment if its shares are purchased at an excessive price.
Third, maintain diversification.
Concentrating an entire portfolio in one company, industry, or investment theme can expose investors to unexpected risks.
The goal is not to predict every market movement.
It is to construct a portfolio capable of surviving uncertainty while participating in long-term economic growth.
Conclusion: Wall Street Climbs a Wall of Worry
The week of November 9–13, 2026, demonstrated the resilience—and unpredictability—of financial markets.
Despite inflation concerns, rising Treasury yields, and Nvidia’s leadership crisis, the major U.S. stock indexes finished higher.
The S&P 500 gained approximately 2.5%, the Nasdaq advanced 2.3%, and the Dow rose 2.1%.
Canada’s TSX gained approximately 0.89%.
Nvidia experienced a dramatic decline, but several competitors and AI infrastructure companies delivered strong gains.
Meanwhile, Microsoft’s global service disruption highlighted the risks associated with modern digital infrastructure.
For investors, the week’s events reinforce a familiar lesson.
Economic uncertainty is unavoidable.
Companies will encounter unexpected challenges.
Markets will react emotionally to new information.
But long-term investment success depends less on predicting headlines and more on owning productive assets at reasonable valuations.
The key takeaway: Markets can climb despite uncertainty, but successful investing still requires diversification, discipline, and an understanding of risk.
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