The masterbrain's trajectory (blue, curved through its 7 checkpoints), the deterministic v0.3 control (dashed), and the actual price (green) overlaid from the prediction date forward.
Forecast Change-6.4% to $225.00
Predicted High$250.00at 1 month
Predicted Low$225.00at 6 months
Max Drawdown (predicted)-6.4%
Forecast
The masterbrain trajectory — 7 dated checkpoints. Short rungs (2w, 1m) show the typical range as the primary claim; point calls run from 2 months out. Every claim still gets graded.
Predicted Jul 23, 2026 3:36 am
Bear
GRMN trends lower to
$225.00
(-6.4% from $240.51)
by Jan 2027.
ride-then-fade
ThesisGRMN trades well above composite fair value ($136) and DCF ($161), but strong quality, positive sentiment, and a likely earnings beat on 7/29 should support the price near-term before valuation gravity slowly pulls it lower over the 6-month horizon.
Invalidated ifAn earnings miss or guidance cut on 7/29, or a break above $260 on strong volume, would invalidate the fade thesis.
Checkpointtime after the call
Datewhen it gets graded
Predictedthe claim: closing price
Current priceactual close — fills in over time
Predicted returnpredicted vs $240.51 at call
Conv.brain's confidence, 1–10
Driverwhy the brain put the point here
Prediction made
Jul 23, 2026
—
$240.51at call
—
—
The anchor — every point below is measured from this price and date.
2 weeks
Aug 6, 2026
$227.27–$253.75typical range · internal point $248.00
—
±5.5%
6/10
Earnings beat likely; 7 of 8 quarter beat streak
What actually happened:
closed $302.55
on Aug 5, 2026 = +25.8% vs the call
(predicted +3.1%)
· direction MISS
(called flat, was up)
· off by 22.7 pp
· accuracy 3/10
· typical range ±5.5%:
OUTSIDE the band
· S&P +4.3%
over the same window — lagged it
1 month
Aug 23, 2026
$221.32–$259.70typical range · internal point $250.00
—
±8.0%
5/10
Post-earnings drift with positive product news flow
What actually happened:
closed $294.85
on Aug 21, 2026 = +22.6% vs the call
(predicted +4.0%)
· direction MISS
(called flat, was up)
· off by 18.7 pp
· accuracy 4/10
· typical range ±8.0%:
OUTSIDE the band
· S&P +3.6%
over the same window — beat it
2 months
Sep 23, 2026
$244.00
—
+1.5%
5/10
Momentum cools as valuation concerns resurface
3 months
Oct 23, 2026
$238.00
—
-1.0%
4/10
Neutral tape, analyst caution weighs modestly
4 months
Nov 23, 2026
$232.00
—
-3.5%
4/10
Value gravity toward $172 signal-adjusted anchor
5 months
Dec 23, 2026
$228.00
—
-5.2%
4/10
Year-end positioning, mild multiple compression
6 months
Jan 23, 2027
$225.00
—
-6.4%
3/10
Drift toward deterministic baseline endpoint
Why ranges on the short rungs?
A 102-prediction trial (2026-07-21) showed 2-week point calls carry no information here —
three prompt formulations all lost to simply predicting zero — while the stock's own
volatility scale (σ×√t) described those windows well. So the short rungs claim what's
actually knowable: the typical travel, with earnings timing flagged where the variance
will come from. The internal point calls keep being generated and graded to map where
real skill begins. Full evidence: stocks/predictions/V0.5-DESIGN.md §8.
Deterministic control (v0.3 value line) targets
$228.65
(-4.9%)
— both lines get graded at every checkpoint, so the brain has to beat the formula, not just replace it.
Brain: claude-opus-4-7.