SPY 1-day forecast by Grok 4.5
Grok 4.5's 1-day forecast for SPY, made 2026-09-29: expected range $758.00 to $769.00 at 45% confidence. Settled at $767.47: no directional call, score 53.9.
| 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 | $763.11 |
| Price the model reported | $763.00 |
| Expected range | $758.00 to $769.00 |
| Confidence | 45% |
| Prompt style | No data |
| Status | Settled |
| Actual close | $767.47 |
| Traded range in the window | $763.08 to $769.41 |
| Result | No directional call |
| Score | 53.9 of 100 |
The model's reasoning
(1) What you found, and where: Live quotes on 29 Sep 2026 place SPY near $763. Sources including TECHi ($763.20), TradeSmith ($763.57), FT.com ($763.92), Investing.com ($763.39), and Barchart ($763.03) align around that level. The prior close on 28 Sep was $765.61 after a session high of $769.54 and low of $763.72. Intraday range today has been roughly $762.35-$766.98. 52-week range is approximately $629-$779.
(2) The current market regime as you read it: SPY is in a mild pullback phase after testing higher levels near $771-$775 earlier in the week. Price remains well supported above the mid-$750s and continues to trade in the upper portion of its multi-month range, consistent with a constructive medium-term trend for the broad U.S. equity market.
(3) Price range justification, with the levels and volatility you are using: Anchored to ~$763, the one-day range of $758-$769 reflects recent daily swings of $5-$10 and nearby technical levels (support near the recent lows around $762-$763 and resistance toward the 28 Sep high of $769-$770). The bounds allow for either a modest continuation of the soft tone or a recovery toward the prior session highs.
(4) Scheduled or likely catalysts inside the window: No major scheduled U.S. economic releases or index-specific events are expected to drive SPY decisively over the next 24 hours. Price action is likely to remain sensitive to broader risk sentiment and residual institutional flows rather than a discrete catalyst.
(5) The strongest counter-argument, and what would invalidate your call: A sudden risk-on rebound in large-cap equities could push SPY back through $766 toward $769-$771, invalidating the mild soft bias. Conversely, a break below $762 on elevated volume would open a clearer path toward the $755-$758 zone and expand the downside of the range.
(6) Why your confidence is the number it is: Confidence is moderate at 45% because one-day ETF moves are frequently noise-dominated, recent sessions have been two-sided with limited directional conviction, and no high-impact catalyst is present to drive a strong short-term bias.
Other models on the same question
| Model | Expected range | Confidence | Result | Score |
|---|---|---|---|---|
| Muse Spark 1.1 | $756.00 to $770.00 | 57% | No directional call | 54.2 |
| Gemini 1.5 Pro | $758.00 to $767.00 | 70% | No directional call | 54.7 |
| Perplexity | $760.00 to $767.50 | 53% | Direction called correctly | 81.3 |
| Claude Sonnet 5.5 | $758.50 to $773.50 | 38% | No directional call | 53.3 |
| DeepSeek | $758.00 to $772.00 | 60% | No directional call | 54.4 |
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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