SPY 1-day forecast by Muse Spark 1.1
Muse Spark 1.1's 1-day forecast for SPY, made 2026-09-18: expected range $754.00 to $770.00 at 54% confidence. Settled at $769.17: no directional call, score 53.9.
| Asset | SPY |
|---|---|
| Model | Muse Spark 1.1 |
| 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 | $759.25 |
| Price the model reported | $762.57 |
| Expected range | $754.00 to $770.00 |
| Confidence | 54% |
| Prompt style | No data |
| Status | Settled |
| Actual close | $769.17 |
| Traded range in the window | $757.97 to $769.36 |
| Result | No directional call |
| Score | 53.9 of 100 |
The model's reasoning
(1) What you found, and where: MacroTrends reports latest close Sep 17 2026 $762.57 all-time high $777.88 Aug 13 2026. ADVFN options Sep 17 show SPY 753 strike last $9.40 +5.35 +132.10% vol 6,828 open 2,700, 754 strike $8.31 +4.86 +140.87% vol 11,450 open 7,796, 755 strike $6.94 +3.97 +133.67% vol 40,780 open 24,095. FinancialContent shows price $678.36 close $675.02 and $686.68 close $687.57 prints varying but MacroTrends $762.57 is authoritative. Sep 16 prior close $754.20 per MacroTrends earlier. Fed hike Sep 16 12-0 to 3.75-4.00% per Freedom969.
(2) The current market regime as you read it: Rebound after hike digestion. SPY from $754.20 Sep 16 to $762.57 Sep 17 +1.1% shows reversal. BTC $80,600 +4.73% Sep 18 per Finnhub high $80,989 low $76,259 shows risk-on returning. XLF $55.61 -0.48% Sep 18 and XLE $64.36 -0.18% lagging but NVDA $219.16 flat. Regime mildly bullish as hike seen as one-and-done.
(3) Price range justification, with the levels and volatility you are using: Anchored to $762.57 close Sep 17 MacroTrends. Using day range implied options 753-755 and $762.57 close. Daily vol ~1% ~$7.6. Lower $754 near Sep 16 close $754.20 -1.1% downside if profit taking after +1.1% bounce, upper $770 +0.97% toward $777.88 all-time high captures extension if yields ease. Slight upside skew due to +1.1% momentum Sep 17.
(4) Scheduled or likely catalysts inside the window: Window Sep 18 14:37 UTC 24h covers Sep 18-19 post-FOMC, quad witching Friday. Focus shifts to October Fed meeting per CoinDesk. Warsh remarks and 2-year yield 4.348% per Kitco drive. No major SPY earnings.
(5) The strongest counter-argument, and what would invalidate your call: Bear case: hawkish Warsh guiding more hikes and UMich sentiment plunge inflation soaring per CoinDesk Sep 17 could push SPY back to $754 if yields rise. Bull case: dovish hold narrative could squeeze toward $770. Invalidation: close below $750 or above $775 would negate mild bullish.
(6) Why your confidence is the number it is: Confidence 54% reflects live close $762.57 Sep 17 per MacroTrends dated after baseline with corroborating options volume Sep 17 and prior $754.20 close, but post-hike Friday quad witching noisy. Labeling live because quote is Sep 17 close after window start.
Other models on the same question
| Model | Expected range | Confidence | Result | Score |
|---|---|---|---|---|
| GPT-5.6 Sol | $754.00 to $767.00 | 55% | No directional call | 52.3 |
| Claude Opus 5 | $753.10 to $769.10 | 52% | No directional call | 53.8 |
| Grok 4.5 | $754.00 to $765.50 | 38% | No directional call | 50.1 |
| Gemini 1.5 Pro | $754.00 to $768.00 | 65% | No directional call | 53.6 |
| DeepSeek V3 | $758.50 to $767.50 | 62% | Direction called correctly | 79.4 |
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.
ForecastNest provides AI-generated market analysis and quantitative research for informational and educational purposes only. Nothing here constitutes financial, investment, legal, or tax advice.