Tuesday delivered the first meaningful post–Labor Day test, and the market weakened without breaking apart.
The S&P 500 lost 7700, closing at 7673.52, while broader participation deteriorated, Brent approached $100 and the 10-year Treasury yield closed above 4.80%. Yet Nasdaq 100 declined only 0.12%, and semiconductor, networking, optical and other AI-infrastructure names continued attracting capital.
That leaves two questions at the center of the setup:
Can the S&P 500 defend 7620 while oil and long-term yields remain elevated?
And beneath the indexes:
Is Connect becoming the next important layer of the AI opportunity?
Executive Read
S&P 500: 7673.52: -0.58%
Nasdaq 100: 29507.70: -0.12%
Dow: 52786.07: -1.18%
Russell 2000: 2960.20: -0.52%
S&P MidCap 400: -0.7%
Equal-weight S&P 500 / RSP: -0.75%
2-year Treasury: 4.396%
10-year Treasury: 4.805%
30-year Treasury: 5.264%
VIX: 15.72: +2.74%
Brent: $97.92
Intraday Brent high: $99.46
WTI: $93.03
Bias: More cautious beneath 7700, but not broadly bearish while 7620 holds and AI-infrastructure leadership remains intact.
Main Market Message
Tuesday produced the combination we have been watching: higher oil alongside elevated Treasury yields.
But the distinction between an uncomfortable market and a more serious deterioration remains important. Brent pushing toward $100 becomes considerably more problematic if it drives inflation expectations and long-term yields materially higher from here.
The working framework is straightforward:
Elevated oil + stable yields = rotation and volatility.
Higher oil + accelerating yields = a more serious tightening of financial conditions.
For now, the market is still in the first category.
Breadth weakened, Russell 2000 again failed beneath 3000, and healthcare, financials and software came under pressure. But the strongest AI-related groups continued attracting buyers.
That is increasingly important because the AI opportunity is becoming less about one group of chip stocks and more about the economic chain surrounding them:
Build → Connect → Power → Secure → Use → Monetize
Tuesday provided particularly strong evidence that Connect deserves more attention.
Market Snapshot
Tuesday was weaker beneath the surface than Nasdaq 100 suggested.
Only energy and utilities finished higher among S&P 500 sectors. Healthcare fell 2.6%, financials declined 1.4%, Russell 2000 lost 0.52%, the S&P MidCap 400 fell 0.7%, and equal weight again lagged.
Technology told a different story.
The PHLX Semiconductor Index gained 1.3% despite NVIDIA falling 2.01%, while AMD, Intel and Qualcomm all advanced sharply.
That leads to an important distinction:
AI leadership is broadening within the AI complex.
Market leadership is not yet broadening across equities.
RSP, EQAL, Russell 2000 and the S&P MidCap 400 still need to improve before the broader participation story is repaired.
Key Takeaways
1) 7620 is now the immediate decision level
The S&P 500 lost 7700 and closed at 7673.52.
The August high at 7816 remains the major breakout trigger, and 8003 remains the measured-move objective. But first the market must defend prior breakout support.
The sequence is now:
Hold 7620 → reclaim 7700 → challenge 7816 → reopen 8003
A sustained break beneath 7620 would materially weaken the structure.
2) Oil and yields are pressuring equities—but have not triggered a full macro repricing
Brent approached $100 while the 10-year Treasury closed at 4.805% and the 30-year reached 5.264%.
The pressure is already visible in rate-sensitive areas. Homebuilders fell 3.1%, providing a practical example of higher long-term rates tightening conditions outside the technology complex.
The next question is whether yields stabilize or begin accelerating with oil.
3) Connect received meaningful price confirmation
The optical group produced some of Tuesday’s strongest moves:
GLW: +7.58%
LITE: +11.04%
COHR: +7.10%
That strengthens the case that moving enormous amounts of data efficiently is becoming another important AI bottleneck.
4) Semiconductor leadership broadened
SOX gained 1.3% despite NVDA falling 2.01%, while AMD rose 5.90%, INTC 9.05% and QCOM 3.17%.
That is healthier leadership than a semiconductor rally dependent on one dominant name.
It is also a four-session winning streak, which argues for patience rather than chasing.
5) Scarcity may be the common denominator behind the best AI opportunities
Memory, semiconductor manufacturing capacity, optical networking, data-center connectivity and power share an attractive characteristic:
Demand can increase much faster than supply can respond.
That creates the potential for pricing power, margin expansion and earnings surprises.
A useful opportunity screen becomes:
Where is AI demand growing faster than supply can respond?
AI and Technology
The AI opportunity is becoming more useful when viewed as an economic chain rather than one broad theme:
Build → Connect → Power → Secure → Use → Monetize
Build
The foundation remains semiconductors, memory, semiconductor equipment and servers.
Applied Materials’ constructive commentary around demand, capacity and pricing strengthens the semiconductor-equipment thesis. Continued investment in advanced manufacturing also reinforces the idea that AI capital spending is propagating farther upstream.
The important point is not simply that chip demand is strong.
It is that capacity can be expensive, slow and difficult to add, creating the potential for attractive economics where demand remains strongest.
Connect
Tuesday provided the strongest evidence yet that connectivity deserves its own place in the AI opportunity map.
Corning surged 7.58% following its major Verizon fiber agreement, while Lumentum gained 11.04% and Coherent 7.10%.
Increasingly powerful AI clusters require enormous amounts of:
bandwidth, fiber, optics, switching and interconnect capacity.
Compute has limited economic value if data cannot move efficiently between processors, racks and data centers.
That moves QCOM, GLW, LITE, COHR and CIEN higher on the research list.
Power
Power remains another emerging constraint.
Solaris Energy Infrastructure raised its Q3 and Q4 EBITDA outlooks, providing additional evidence that data-center power demand is translating into earnings rather than remaining only an attractive narrative.
Use and Monetize
Infrastructure strength does not invalidate the longer-term move toward AI consumption and monetization.
The opportunity appears to be expanding across several layers simultaneously.
MSFT, GOOGL and AMZN remain particularly interesting because they can provide infrastructure while also monetizing AI through enormous existing customer bases. META and ORCL offer variations on that full-stack model.
Two questions increasingly deserve to guide AI research:
Does AI create more demand for what this company sells—or make its product easier to replace?
Where is AI demand growing faster than supply can respond?
Those filters are considerably more useful than simply asking whether a company has “AI exposure.”
Important Stock Moves
Amgen (AMGN): -10.08%. Disappointing Novartis clinical data raised concerns about Amgen’s related cardiovascular program and contributed disproportionately to the Dow’s weakness.
Intel (INTC): +9.05%. Intel surged on favorable commentary and reports of potential price increases, broadening semiconductor leadership beyond the most familiar AI winners.
Advanced Micro Devices (AMD): +5.90%. Constructive commentary around accelerating AI demand and AMD’s server CPU opportunity added another major participant to semiconductor leadership.
Qualcomm (QCOM): +3.17%. Amazon’s custom-silicon and optical-connectivity relationship provides meaningful hyperscaler validation for Qualcomm’s expanding data-center ambitions.
Corning (GLW): +7.58%. The Verizon fiber agreement and strong peer response provided meaningful price confirmation that optical connectivity is developing into another AI-infrastructure leadership layer.
Lumentum (LITE): +11.04%. Lumentum was one of the strongest optical read-through beneficiaries, moving it higher on the Connect research list.
Coherent (COHR): +7.10%. Coherent joined the optical rally, adding another price-confirmed participant to the emerging connectivity theme.
Broadcom (AVGO): +2.98%. Broadcom continued strengthening despite broad-market weakness, reinforcing investor preference for semiconductor and networking infrastructure.
Boston Scientific (BSX): -5.9%. A cyberattack disrupted manufacturing and distribution enough to threaten existing guidance, adding pressure to an already weak healthcare sector.
Salesforce (CRM), ServiceNow (NOW), Intuit (INTU): sharply lower. Application software remained under pressure as investors reconsidered which functions increasingly capable AI agents may reproduce.
ServiceTitan (TTAN): -19%+ after hours. Revenue grew 21% and quarterly results exceeded expectations, but weaker forward guidance triggered a severe reaction.
Good results do not protect a stock when forward expectations deteriorate.
Sector Leadership
Tuesday’s hierarchy was clear.
Leadership: semiconductors, AI infrastructure, energy, utilities.
Weakness: healthcare, financials, software.
Within AI, the opportunity map is becoming more detailed:
Build: chips, memory, equipment, servers
Connect: networking, optics, fiber, interconnect
Power: generation, grid and data-center infrastructure
Secure: cybersecurity and infrastructure protection
Use: platforms and applications
Monetize: businesses converting AI adoption into durable earnings and free cash flow
Semiconductors deserve particular respect after four consecutive positive sessions.
But strong groups eventually pull back.
What happens on the first controlled pullback may tell us more than whether SOX manages a fifth consecutive gain.
Rates / Fed / Volatility
The long end of the Treasury curve has become a direct equity-market issue.
2-year: 4.396%
10-year: 4.805%
30-year: 5.264%
Higher yields are already showing up in rate-sensitive equities and lower market valuations. The S&P 500 forward multiple has compressed to roughly 19 times expected earnings from 21 times in June.
That is an important reminder that healthy earnings do not guarantee rising stock prices if the market simultaneously reduces the multiple it is willing to pay.
Friday’s stronger employment report reduced concern about immediate labor deterioration, leaving inflation as the key variable for the September Fed decision.
With oil already adding pressure, small differences in Thursday’s PPI and Friday’s CPI could have an outsized effect on rate expectations.
The preferred sequence is:
inflation cooperates → yields ease → oil stabilizes
The more difficult sequence is:
inflation firms → yields accelerate → Brent breaks or remains above $100
Tuesday’s solid 3-year Treasury auction was encouraging. Wednesday’s 10-year auction is the more important duration test.
Commodities and Dollar
Oil remains the dominant cross-market variable.
Brent: $97.92
Intraday high: $99.46
WTI: $93.03
The framework remains:
Below $95 Brent: improving
$95–$100: meaningful inflation/rates pressure
Above $100: likely forces another macro repricing
$110–$120: increasingly stagflationary
There is also a useful counterpoint.
Despite significant Middle East disruption, Brent continues struggling to sustain a move above $100. Continuing Hormuz flows, alternative export routes, additional non-OPEC supply and softer areas of global demand are still providing buffers.
The oil market is stressed, but it has not yet confirmed a full-scale physical supply crisis.
For equities, the key question is whether $98–$100 oil begins pushing long-term yields materially beyond their recent range.
Crypto
Bitcoin remained in the upper-$78000 area after failing to hold last week’s move above $82000.
Immediate support: 78000
Secondary support: 75000–76600
Resistance: 80000
Major resistance: 81200–82000
Crypto remains secondary to oil and rates.
A sustained break beneath 78000 would nevertheless add evidence that tighter financial conditions are beginning to pressure speculative liquidity.
Technical Picture
S&P 500 / SPY
Close: 7673.52
Primary support: 7620
Secondary support: 7550–7500
First resistance: 7700
Major breakout: 7816
Measured objective: 8003
Tuesday changed the immediate roadmap.
Bullish sequence: 7620 holds → 7700 reclaimed → 7816 broken → 8003 back in play
Bearish sequence: 7620 lost → failed reclaim → 7550–7500 becomes increasingly relevant
Tuesday weakened the bull-flag setup.
It did not invalidate it.
Nasdaq 100 / QQQ
Close: 29507.70
Immediate support: 29400–29500
Secondary support: 29000–29200
Major resistance: 30000
Nasdaq 100 continues behaving better than the broader market because AI-infrastructure strength is offsetting software weakness.
A sustained move above 30000 would strengthen the growth-leadership case.
A break below 29000–29200 would suggest weakness is spreading beyond the vulnerable application layer.
Russell 2000 / IWM
Close: 2960.20
Immediate support: 2950
Secondary support: 2900–2925
Breakout trigger: 3000
Larger resistance: 3050
Russell 2000 again failed beneath 3000.
A decisive move through 3000 would improve the participation picture. A loss of 2950 would weaken it further.
S&P MidCap 400
Tuesday: -0.7%
Immediate support: 3750
First resistance: 3800
Larger resistance: 3850
Midcaps remain below the levels needed to confirm broader participation.
A move through 3800–3850, especially alongside Russell 2000 above 3000, would provide much stronger breadth confirmation.
Quality of the Move
Tuesday produced real deterioration: the S&P 500 lost 7700, equal weight lagged, small and midcaps remained weak, and healthcare, financials and software came under pressure.
But the market’s strongest leadership did not fail.
SOX gained despite NVIDIA falling. AMD, INTC and QCOM advanced sharply. GLW, LITE and COHR produced exceptional relative strength.
The distinction is important:
AI leadership broadened within AI. The overall market did not broaden.
Three pieces of the more dangerous warning are now present:
higher oil + elevated yields + weaker breadth
The remaining confirmation would be:
accelerating yields + failing AI leadership
Neither has happened yet.
Scenario Framework
Bull Case: The S&P 500 defends 7620, reclaims 7700, AI-infrastructure leadership persists, Russell 2000 eventually clears 3000, yields stabilize and price ultimately breaks 7816 toward 8003. (30% probability)
Base Case: The S&P 500 remains inside the larger 7620–7816 range while investors work through PPI, CPI and the Fed, with strong secular AI leadership offset by elevated oil, restrictive long-term yields and uneven breadth. (45% probability)
Bear Case: The S&P 500 loses 7620 as Brent breaks sustainably above $100, Treasury yields accelerate, inflation remains firm and weakness spreads into semiconductor and AI-infrastructure leadership. (25% probability)
How Probabilities Improve
The bullish case improves with:
S&P 500 defending 7620
S&P 500 reclaiming 7700
S&P 500 breaking 7816
Nasdaq 100 above 30000
Russell 2000 above 3000
MidCap 400 above 3800–3850
RSP / EQAL improving
10-year Treasury below 4.75%–4.80%
Brent below $95–$97
AI leadership retaining relative strength
Benign PPI and CPI
How Probabilities Weaken
The setup deteriorates with:
S&P 500 below 7620
Russell 2000 below 2950, then 2900
Nasdaq 100 below 29000–29200
Brent holding above $100
10-year Treasury accelerating above 4.85%–4.90%
30-year Treasury continuing higher
Hot PPI or CPI
Build and Connect leadership failing
The warning combination remains:
higher oil + accelerating yields + weaker breadth + failing AI leadership
Portfolio Posture
Remain flexible, but avoid becoming broadly bearish while 7620 and leadership remain intact.
Preserve buying power through PPI and CPI.
Do not chase semiconductors after four consecutive positive sessions. A controlled pullback that preserves relative strength would provide a far more useful opportunity.
Within AI, continue prioritizing:
Build: semiconductors, memory, equipment
Connect: networking, optics, fiber, interconnect
Power: generation, grid and data-center infrastructure
Do not lose sight of Full-Stack AI Economics either. MSFT, GOOGL and AMZN remain important because they can potentially capture value across several layers rather than depending upon one product category.
The two most useful AI screens remain:
Does AI create more demand for what this company sells—or make its product easier to replace?
Where is AI demand growing faster than supply can respond?
Potential Opportunities
Build
SMH: Semiconductor leadership remains strong. Setup: relative-strength continuation after consolidation. Confirmation: controlled pullback holds and leadership survives PPI/CPI. Invalidation: decisive breakdown through recent support.
AMD: AI and server-demand commentary broadened semiconductor leadership. Setup: continuation after consolidation. Confirmation: Tuesday’s breakout area holds through a controlled pullback. Invalidation: sharp relative-strength failure.
MU: Memory remains one of the strongest second-order AI themes. Setup: controlled pullback. Confirmation: relative strength persists while shorter-term moving averages catch up. Invalidation: breakout failure.
SNDK: Storage and memory fundamentals remain favorable. Setup: post-breakout consolidation. Confirmation: recent gains hold while volatility contracts. Invalidation: rapid breakout failure.
AMAT: Semiconductor capital intensity, constrained capacity and favorable pricing support the equipment thesis. Setup: semiconductor-capex continuation. Confirmation: relative strength persists through a controlled pullback. Invalidation: material deterioration versus the semiconductor group.
Connect
QCOM: Amazon provides hyperscaler-scale validation of Qualcomm’s AI data-center ambitions. Setup: post-news continuation. Confirmation: recent strength consolidates above the breakout area. Invalidation: full news-driven breakout failure.
GLW: Tuesday’s 7.58% gain provides strong price confirmation for the optical-connectivity thesis. Setup: catalyst-driven continuation. Confirmation: the Verizon-driven breakout holds through consolidation. Invalidation: breakout failure.
LITE: Tuesday’s 11.04% surge elevates Lumentum into a higher-priority relative-strength watch. Setup: post-breakout consolidation. Confirmation: gains hold while volatility contracts. Invalidation: rapid reversal through the breakout.
COHR: Tuesday’s 7.10% gain adds another price-confirmed participant to Connect. Setup: thematic leadership continuation. Confirmation: constructive consolidation and sustained relative strength. Invalidation: material deterioration versus optical peers.
CIEN: Increasing network-capacity requirements keep Ciena relevant to the AI connectivity buildout. Setup: infrastructure-broadening watch. Confirmation: price and relative strength improve alongside the optical group. Invalidation: inability to participate as Connect leadership strengthens.
Power
BE: AI electricity demand remains an important structural theme. Setup: power-demand continuation. Confirmation: recent strength consolidates rather than reverses. Invalidation: full catalyst-driven breakout failure.
SEI: Raised Q3 and Q4 EBITDA expectations provide evidence that data-center power demand is translating into earnings. Setup: emerging Power-theme research candidate. Confirmation: guidance strength is followed by sustained price and earnings momentum. Invalidation: failure to hold the post-guidance move or deterioration in the data-center power outlook.
Indexes
SPY: Setup: support/reclaim. Confirmation: 7620 holds followed by reclaim of 7700. Invalidation: sustained break below 7620.
QQQ: Setup: relative-strength continuation. Confirmation: 29400–29500 holds followed eventually by 30000. Invalidation: loss of 29000–29200.
Next Key Events
Wednesday, September 9
Apple product event — 10:00 AM Pacific
Watch pricing, upgrade-cycle potential and whether Apple Intelligence can become a meaningful demand catalyst.
10-year Treasury auction — Wednesday afternoon
Tuesday’s 3-year auction showed healthy demand, but duration is now the more important test.
Strong demand: could help pull the 10-year yield back below 4.80%.
Weak demand: would reinforce the market’s long-duration valuation problem.
Thursday, September 10
PPI
Initial jobless claims
ECB decision
After the close:
Oracle (ORCL)
Adobe (ADBE)
Oracle tests whether enormous AI backlogs can translate into revenue, margins, free cash flow and acceptable returns on capital.
Adobe tests whether AI expands its opportunity faster than it commoditizes portions of creative software.
Friday, September 11
CPI
University of Michigan Consumer Sentiment
CPI remains the week’s decisive scheduled macro event.
September 15–16
FOMC
September 18
Quarterly options expiration
Need To Know
S&P 500 support: 7620
S&P 500 reclaim: 7700
Major breakout: 7816
Larger objective: 8003
Nasdaq 100 breakout: 30000
Russell 2000 breakout: 3000
10-year Treasury: 4.805%
30-year Treasury: 5.264%
Brent: $97.92
AI research priority: Connect + scarcity
Wednesday: Apple + 10-year Treasury auction
Thursday: PPI + ORCL + ADBE
Friday: CPI
Bottom Line
Tuesday weakened the short-term market setup without breaking the larger structure.
The S&P 500 lost 7700, breadth deteriorated and rate-sensitive groups showed more pressure as oil remained close to $100 and long-term Treasury yields stayed elevated.
For now, 7620 is the immediate decision level.
Hold 7620 and reclaim 7700: the path toward 7816 and eventually 8003 remains viable.
Lose 7620 while yields accelerate and leadership fails: the bullish structure requires a meaningful reassessment.
Beneath the indexes, the more interesting development is the continued expansion of the AI opportunity. Tuesday provided strong evidence that Connect—networking, optics, fiber and interconnect—is developing into another genuine leadership layer, while scarcity continues supporting attractive economics across memory, semiconductor capacity and power.
The larger framework remains:
Build → Connect → Power → Secure → Use → Monetize
Preferred posture: stay flexible beneath 7700, preserve buying power through PPI and CPI, resist chasing extended semiconductor strength, and use controlled pullbacks to identify the Build, Connect and Power leaders that continue attracting capital.
Three questions are worth carrying into Wednesday:
Can 7620 hold while oil and yields remain elevated?
Does AI create more demand for what this company sells—or make it easier to replace?
Where is AI demand growing faster than supply can respond?
“It can be very expensive to try to convince the markets you are right.”
― Ed Bradford