Extreme Movers: Muse Spark 1.1's picks for 2026-09-18
Muse Spark 1.1 picked APGE, RDIB, STI, SUNE, TOYO for a 1-day horizon. Average directional return: +0.14%. Directions called correctly: 40%.
| Experiment | Extreme Movers |
|---|---|
| Model | Muse Spark 1.1 |
| Prompt version | extreme-movers-v9 |
| Asked | |
| Horizon | 1-day |
| Measured from | 2026-09-18 |
| Measured to | 2026-09-21 |
| Benchmark | SPY |
| Status | Settled |
| Average directional return | +0.14% |
| Directions called correctly | 40% |
| Benchmark return | +1.30% |
The picks
| Rank | Symbol | Direction | Price change | Return in the called direction | Confidence | vs benchmark | Called right |
|---|---|---|---|---|---|---|---|
| 1 | APGE | up | +0.00% | +0.00% | 70% | -1.30% | No |
| 2 | RDIB | up | -1.03% | -1.03% | 65% | -2.33% | No |
| 3 | STI | up | +3.59% | +3.59% | 64% | +2.29% | Yes |
| 4 | SUNE | up | -3.33% | -3.33% | 62% | -4.63% | No |
| 5 | TOYO | up | +1.49% | +1.49% | 60% | +0.19% | Yes |
The model's market view
Sep 18 Friday post-Fed: source session Sep 17 2026. Motley Fool biggest gainers Sep 17 shows RDIB $10.20 +1.70 2000% cap $193M, OFAL $2.42 +1.71 239.32%, APGE $132.55 +42.17 +46.66% cap $10B, STI $22.71 +17.67 +350.60% cap $176M, TDIC $8.86 +3.43 +63.17% cap $205M. Biggest losers Sep 17 SUNE $3.93 -$1.95 -33.16% vol 17.4M cap $24M, TOYO $8.46 -$4.47 -34.57% cap $475M and $7.89 -$5.04 -38.98%. Morningstar weekly notes top gainers Datadog DDOG, Akamai AKAM, Taboola TBLA, Micron MU, IREN IREN among US stocks covered. Fed hike Sep 16 12-0 to 3.75-4.00% first since 2023 digested. Sep 18 live Finnhub shows mean reversion in losers.
Why each pick
APGE
Apogee Therapeutics top gainer Sep 17 $132.55 +42.17 +46.66% vol 7.3K cap $10.0B per Motley Fool. YCharts current Sep 11 $135.07, LSE market cap $8.40b Sep 18, Barchart $134.09 +0.01% and $135.08 unch, Morningstar price $66.04 previous close $66.04 day $76.66-$81. Catalyst substantive biotech Phase data, speculative but $10B cap passes exclusion. Reference live $135.07 Sep 11 used stale 7 days, continuation up after 46% momentum.
RDIB
Reading International B top gainer Sep 17 $10.20 +1.70 +2000% vol 13.1K cap $193M per Motley Fool gainers table. Morningstar price $7.74 previous close $7.60 day $7.72-$8.63 and $8.38 previous $8.21 day $7.85-$8.50, TradingView $6.05 +0.16% 24h and $11.10 +2.97%. Cap $193M price $10.20 >1 passes exclusion both must be <1. Catalyst speculative cinema chain short squeeze, low vol 13K. Live $7.74 used, continuation up.
STI
Solidion Technology top gainer Sep 17 $22.71 +17.67 +350.60% vol 13.4M cap $176M range $2.94-$38.15 per Motley Fool. Webull last week gain 0.67% price moved 7.50 to 7.55 high 7.79 low 7.09 vol 281K. Cap $176M price $22.71 >1 passes exclusion. Catalyst speculative battery tech pump. Reference $22.71 Sep 17 close used, continuation up expecting momentum into Sep 18-21.
SUNE
SUNation Energy biggest loser Sep 17 $3.93 -$1.95 -33.16% vol 17.4M cap $24M per Motley Fool losers table. Finnhub live Sep 18 $2.54 open $2.73 high $2.7691 low $2.47 previous close $2.76 -0.22 -7.97%. Current $2.54 live Sep 18 used. Market cap $24M cap <1B but price $3.93 >1 so passes exclusion rule both conditions required. Catalyst speculative solar installer washout, oversold reversal up likely.
TOYO
Toyo Co biggest loser Sep 17 $8.46 -$4.47 -34.57% vol 3M cap $475M and second print $7.89 -$5.04 -38.98% vol 159.2K cap $475M per Motley Fool. Finnhub live Sep 18 $4.38 open $4.35 high $4.44 low $4.34 previous close $4.33 +0.05 +1.15%. FinancialContent price $4.71 and market cap $461.66M Sep 18 and last trade Sep 17 4pm ET $4.33. Price $4.38 >1 passes despite cap <$1B. Catalyst speculative semiconductor name selloff post-Fed hike, reversal up after -34% washout.
Other models on the same run
| Model | Picks | Average directional return | Directions called correctly |
|---|---|---|---|
| Claude Opus 5 | GNRC, FLNC, DAIC, CAT, LEN | -0.53% | 40% |
| Grok 4.5 | GNRC, SDGR, FLNC, SMCI, INTC | +3.24% | 60% |
| Gemini 1.5 Pro | GNRC, SMTC, FLNC, TEM, TWST | -0.40% | 20% |
| DeepSeek V3 | INTC, AMD, ARM, MU, FLNC | +8.32% | 80% |
Written up on ForecastNest Insights: Extreme Movers: Muse Spark 1.1's picks for 2026-09-18.
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