Stock Selection: Grok 4.5's picks for 2026-10-20
Grok 4.5 picked BRZE, EFX, NOC, HAL, XLE for a 1-day horizon. Portfolio return vs SPY: +0.75%. Picks that beat SPY: 80%.
| Experiment | Stock Selection |
|---|---|
| Model | Grok 4.5 |
| Prompt version | stock-selection-v8 |
| Asked | |
| Horizon | 1-day |
| Measured from | 2026-10-20 |
| Measured to | 2026-10-21 |
| Benchmark | SPY |
| Status | Settled |
| Portfolio return vs SPY | +0.75% |
| Picks that beat SPY | 80% |
| Benchmark return | -0.15% |
The picks
| Rank | Symbol | Return | Confidence | vs benchmark | Called right |
|---|---|---|---|---|---|
| 1 | BRZE | +0.47% | 78% | +0.63% | Yes |
| 2 | EFX | +0.11% | 72% | +0.26% | Yes |
| 3 | NOC | -1.03% | 68% | -0.88% | No |
| 4 | HAL | +1.67% | 65% | +1.82% | Yes |
| 5 | XLE | +1.77% | 62% | +1.92% | Yes |
The model's market view
US equities mixed intraday with SPY near 771 as oil surges above 100 on Middle East tensions while AI and semiconductor names retrace prior-day rebound. Housing data weak and pending home sales at record lows add caution, but energy and defense names firm on geopolitics; earnings from SpaceX and Netflix after close plus broader Q3 season provide catalysts. Selective momentum and sector rotation favored over broad beta for one-session outperformance.
Why each pick
BRZE
Braze surged over 50% after Salesforce announced a definitive acquisition at 47.50 cash per share, creating a clear arbitrage gap and heavy volume momentum that should persist into the close and next session as deal details and regulatory path are digested. Thesis rests on near-term deal premium support outweighing broader tech weakness. Risks include any negative clarification on closing timeline or financing terms that could trigger profit-taking.
EFX
Equifax posted a strong Q3 beat and guidance that drove an approximate 10% gap higher with elevated volume, positioning the shares for continued relative strength versus SPY as credit-bureau and data analytics names benefit from resilient consumer and mortgage activity signals. Momentum from the earnings surprise is expected to carry through the session. Risks center on any broader market risk-off move or secondary commentary that tempers the beat narrative.
NOC
Northrop Grumman advanced roughly 6% on better-than-expected results and rising defense spending expectations amid ongoing geopolitical tensions, offering a defensive-growth profile that can outperform SPY if oil-driven inflation or equity volatility intensifies. Thesis is supported by backlog strength and sector rotation into industrials. Risks include any post-earnings fade or budget-related headlines that cool defense multiples.
HAL
Halliburton reported an earnings and revenue beat while WTI crude remains elevated near 100 on supply disruptions, giving the oilfield-services name leverage to higher activity and pricing that should support outperformance versus the broader market. Relative strength in energy services is expected to persist with oil volatility. Risks are a sharp oil pullback or negative guidance follow-through on international exposure.
XLE
The Energy Select Sector SPDR captures the broad oil-price surge and related equity strength across majors and services, providing diversified exposure that has historically outperformed SPY on days of geopolitical oil spikes. Thesis is pure sector beta to elevated crude. Risks include any rapid de-escalation in Middle East tensions or profit-taking after recent energy outperformance.
Other models on the same run
| Model | Picks | Portfolio return vs SPY | Picks that beat SPY |
|---|---|---|---|
| Claude Sonnet 5.5 | COF, ISRG, NFLX, RSP, XLE | -0.63% | 60% |
| GPT-6 | SOXL, MMM, ISRG, NOC, RTX | -1.18% | 0% |
| Muse Spark 1.1 | NVDA, TSM, AVGO, MSFT, AAPL | +0.14% | 60% |
| Perplexity | LLY, MMM, NOC, WDC, MU | -0.16% | 20% |
| Gemini 3 Pro | XOM, CVX, MMM, RTX, AMZN | +0.16% | 40% |
| DeepSeek | HAS, MMM, EFX, NOC, LLY | +0.46% | 40% |
Written up on ForecastNest Insights: Stock Selection: Grok 4.5's picks for 2026-10-20.
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