Stock Selection: Grok 4.5's picks for 2026-09-08
Grok 4.5 picked AAPL, NVDA, XLE, MU, AVGO for a 1-day horizon. Portfolio return vs SPY: +0.41%. Picks that beat SPY: 40%.
| Experiment | Stock Selection |
|---|---|
| Model | Grok 4.5 |
| Prompt version | stock-selection-v3 |
| Asked | |
| Horizon | 1-day |
| Measured from | 2026-09-04 |
| Measured to | 2026-09-08 |
| Benchmark | SPY |
| Status | Settled |
| Portfolio return vs SPY | +0.41% |
| Picks that beat SPY | 40% |
| Benchmark return | -0.55% |
The picks
| Rank | Symbol | Return | Confidence | vs benchmark | Called right |
|---|---|---|---|---|---|
| 1 | AAPL | -1.17% | 68% | -0.62% | No |
| 2 | NVDA | -2.01% | 64% | -1.46% | No |
| 3 | XLE | +1.11% | 62% | +1.66% | Yes |
| 4 | MU | -1.61% | 58% | -1.06% | No |
| 5 | AVGO | +2.98% | 55% | +3.53% | Yes |
The model's market view
September opens with historical seasonal headwinds, elevated yields after a hot August jobs report, and ongoing Middle East oil volatility supporting energy. AI/tech leadership persists but is selective; Apple event positioning provides a near-term catalyst ahead of Tuesday’s keynote. Expect mixed tape with potential rotation into energy and event-driven names over broad SPY beta.
Why each pick
AAPL
Pre-event positioning into the September 9 'Surprise and Shine' keynote, which is expected to feature the long-rumored foldable iPhone Ultra plus iPhone 18 Pro models under new CEO leadership. Historical pattern of positive momentum into Apple’s major product events, combined with recent outperformance versus some Mag7 peers on hardware/services resilience. Risks: any disappointment on foldable pricing/timeline or broader tech weakness from higher yields could reverse the bid quickly.
NVDA
Continued AI infrastructure leadership and strong recent data-center demand signals keep it as the highest-conviction secular name for short-horizon outperformance. Positioning remains constructive after solid guidance updates and ecosystem deals. Risks: high valuation sensitivity to any Fed hawkishness or rotation out of mega-cap tech; single-day volatility can be elevated.
XLE
Energy led recent sessions on Middle East supply fears and crude strength; XLE has shown clear relative strength versus SPY YTD and in the latest week. Geopolitical headlines remain a live catalyst that can drive further outperformance on any escalation or inventory draws. Risks: rapid de-escalation or broader risk-off selling could pressure the sector; concentration in integrated majors amplifies oil-price swings.
MU
Memory/AI demand remains structurally tight with repeated upside guidance and customer commitments; semis have shown episodic leadership on AI-related news flow. Short-horizon momentum can persist into the new week if broader tech holds. Risks: memory cycle volatility and sensitivity to any AI capex skepticism or rising yields.
AVGO
Custom AI silicon and networking exposure continue to benefit from hyperscaler spending; recent commentary points to multi-year AI revenue doubling potential. Provides diversified semi exposure beyond pure GPU names. Risks: valuation and any slowdown in custom ASIC orders; broader semiconductor beta to rates and risk sentiment.
Other models on the same run
| Model | Picks | Portfolio return vs SPY | Picks that beat SPY |
|---|---|---|---|
| Gemini 1.5 Pro | NVDA, MU, DELL, SNOW, AMZN | -0.02% | 40% |
| Muse Spark 1.1 | NVDA, AAPL, ORCL, AVGO, MSFT | +0.75% | 40% |
| GPT-5.6 Sol | SOXL, MU, SNDK, NVDA, IONQ | +1.31% | 60% |
| Kimi | XLE, STRL, STX, ORCL, BIDU | +1.79% | 80% |
Written up on ForecastNest Insights: Stock Selection: Grok 4.5's picks for 2026-09-08.
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