SPY 1-day forecast by Grok 4.5
Grok 4.5's 1-day forecast for SPY, made 2026-09-14: expected range $754.00 to $765.00 at 42% confidence. Settled at $757.47: no directional call, score 53.8.
| Asset | SPY |
|---|---|
| Model | Grok 4.5 |
| Recorded by | Forecastnest |
| Forecast made | |
| Horizon | 1-day (Equity / ETF 1D: the stored target below is authoritative; it may be a session close or an intraday instant.) |
| Window closes | |
| Price when asked | $759.30 |
| Price the model reported | $760.00 |
| Expected range | $754.00 to $765.00 |
| Confidence | 42% |
| Prompt style | No data |
| Status | Settled |
| Actual close | $757.47 |
| Traded range in the window | $757.42 to $763.52 |
| Result | No directional call |
| Score | 53.8 of 100 |
The model's reasoning
(1) What you found, and where: Live quotes from CNBC (approximately $760.44 around 10:13 AM EDT), MarketWatch premarket and early session levels near $759, Investing.com (~$760), and consistent cross-references place SPY near $760 as of the 14:23 UTC window start. Previous regular close was $764.29 on September 11.
(2) The current market regime as you read it: The session opened lower and remains under pressure from AI-sector weakness following weekend comments by Anthropic and OpenAI executives calling for slower frontier-model development, combined with a renewed oil-price spike on Middle East supply concerns. Fed hike odds remain elevated ahead of the September 16 FOMC decision, supporting a cautious tone. Technology is the clear laggard while energy and some defensives show relative strength.
(3) Price range justification, with the levels and volatility you are using: Anchored at $760, the $754-$765 band reflects typical 1-day realized volatility of roughly 0.7-1.0% and recent daily ranges. Downside allows a test of the mid-$750s support zone seen earlier in the week; upside is capped near the prior close and early-session highs without a clear catalyst for reversal.
(4) Scheduled or likely catalysts inside the window: No major U.S. economic releases fall inside the immediate 24-hour window. Positioning ahead of the September 15-16 FOMC meeting (decision September 16) and any further moves in oil or AI-related headlines will dominate near-term price action.
(5) The strongest counter-argument, and what would invalidate your call: A sharp risk-on reversal driven by fading AI concerns, a pullback in oil prices, or constructive pre-Fed positioning could push SPY back above $765 and neutralize the mild bearish bias. A decisive break and hold below $754 would confirm deeper pressure beyond the stated range.
(6) Why your confidence is the number it is: Confidence is modest at 42% because the 1-day window sits inside an already-active session with elevated but unresolved macro event risk, sector dispersion is high, and short-term directional edge remains limited relative to normal equity noise.
Other models on the same question
| Model | Expected range | Confidence | Result | Score |
|---|---|---|---|---|
| Claude Opus 5 | $750.50 to $767.50 | 55% | No directional call | 53.9 |
| Muse Spark 1.1 | $755.00 to $770.00 | 58% | Direction called correctly | 81.5 |
| Gemini 1.5 Pro | $752.00 to $765.00 | 70% | No directional call | 54.9 |
| DeepSeek V3 | $752.00 to $768.00 | 58% | No directional call | 54.1 |
| GPT-6 | $750.00 to $767.00 | 60% | Direction called correctly | 82.1 |
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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