SPY 7-day forecast by Grok 4.5
Grok 4.5's 7-day forecast for SPY, made 2026-08-29: expected range $755.00 to $782.00 at 28% confidence. Settled at $766.99: direction called correctly, score 77.3.
| Asset | SPY |
|---|---|
| Model | Grok 4.5 |
| Recorded by | Forecastnest |
| Forecast made | |
| Horizon | 7-day (Existing Mode 1 horizon rules apply; the stored expiry is authoritative.) |
| Window closes | |
| Price when asked | $769.38 |
| Expected range | $755.00 to $782.00 |
| Confidence | 28% |
| Prompt style | No data |
| Status | Settled |
| Actual close | $766.99 |
| Traded range in the window | $759.48 to $774.03 |
| Result | Direction called correctly |
| Score | 77.3 of 100 |
The model's reasoning
(1) What you found, and where: MarketWatch, Macroaxis, FRED and ADVFN confirm SPY closed Aug 28 at $769.35-$769.38 (day range $768.31-$775.30), matching the baseline. S&P 500 finished at 7,711.76. Coverage from MUFG Research, InvestmentNews, Realtor.com, NYT and Reuters shows Fed Chair Warsh’s Jackson Hole remarks raised September rate-hike odds to roughly 55-60% on CME FedWatch, prompting a mild Friday decline after earlier Nvidia-driven strength.
(2) The current market regime as you read it: Weekend consolidation after a modest risk-off reaction to higher policy-rate probabilities. The broader tape remains in a higher-range chop near recent highs, with no decisive trend into the new week.
(3) Price range justification, with the levels and volatility you are using: Range is measured from the $769.38 baseline and kept roughly balanced because the 7-day window lacks a clear directional edge. Typical recent daily ranges of $5-10 and weekly moves of 1-2% produce the stated bounds, allowing for ordinary post-event digestion without assuming a breakout.
(4) Scheduled or likely catalysts inside the window: Early-week labor data (JOLTS around Sep 1) and the Friday Sep 4 employment report are the main scheduled releases; residual reaction to the Jackson Hole message and any shifting rate-hike probabilities will also influence price.
(5) The strongest counter-argument, and what would invalidate your call: A softer-than-expected jobs print could reverse the hawkish re-pricing and push the upper half of the range, while a hot number could extend the mild downside; either outcome outside the band would simply confirm event-driven noise dominating any baseline view.
(6) Why your confidence is the number it is: Confidence is low because the short window is dominated by upcoming data and residual policy uncertainty rather than a sustained technical or fundamental edge; weekend pricing adds further ambiguity until the open.
Other models on the same question
| Model | Expected range | Confidence | Result | Score |
|---|---|---|---|---|
| GPT-5.6 Luna | $744.00 to $782.00 | 69% | Direction called correctly | 83.2 |
| Gemini 1.5 Pro | $750.00 to $775.00 | 60% | Direction called correctly | 83.5 |
| DeepSeek V3 | $752.00 to $785.00 | 48% | Direction called correctly | 79.2 |
| Claude Opus 5 | $746.30 to $785.50 | 52% | Direction called correctly | 80.5 |
How this forecast is measured
Sends only the baseline price and the output format; your AI researches the asset itself. Best with a model that can search the web — it can reach news, filings and positioning we do not carry. Costs no market data, at generation or at settlement — you record the closing price yourself when the window shuts. The monthly allowance is what a membership buys, not a data bill.
Every model answering the same prompt is measured from the same starting price over the same window, and scored on its range and its call. How scoring works · All shared research.
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