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Builders FirstSource Inc.
Industrials · Building Products & Equipment
Made on Jun 12, 2026
Price at call $78.57
6-month call Neutral -2.9%
Target by Dec 2026 $76.26
Great value below $60.00
Model v0.3.0

Projection vs Actual (6M history + forecast)

Our straight 6-month prediction (bold) with a textured realism line, and the actual price overlaid from the prediction date forward.

Forecast

One directional 6-month call and the six monthly points we'll be scored against. Predicted Jun 12, 2026 3:08 am
Neutral BLDR trends range-bound to $76.26 (-2.9% from $78.57) by Dec 2026.
Monthmonths after the call Datewhen it gets graded Predictedthe claim: closing price Current priceactual close — fills in over time Predicted returnpredicted vs $78.57 at call
Prediction made Jun 12, 2026 $78.57 at call
M1 Jul 12, 2026 $78.19 -0.5%
What actually happened: closed $75.69 on Jul 10, 2026 = -3.7% vs the call (predicted -0.5%)  ·  direction HIT (called flat, was flat)  ·  off by 3.2 pp  ·  accuracy 9/10  ·  S&P +1.9% over the same window — beat it
M2 Aug 12, 2026 $77.80 -1.0%
What actually happened: closed $75.10 on Aug 11, 2026 = -4.4% vs the call (predicted -1.0%)  ·  direction HIT (called flat, was flat)  ·  off by 3.4 pp  ·  accuracy 9/10  ·  S&P +4.0% over the same window — beat it
M3 Sep 12, 2026 $77.42 -1.5%
M4 Oct 12, 2026 $77.03 -2.0%
M5 Nov 12, 2026 $76.65 -2.4%
M6 Dec 12, 2026 $76.26 -2.9%

Deserved value (DCF/composite) is $66.06; over 6 months we project closing only part-way to it (reach 18.5%). Value-only — see Not Yet Modeled below.

Weaknesses

0 blocking · 0 degraded · 2 notes — follow the chain top-down (cause → effect).
  • Note
    Valuation anchor absent: dcf.
    anchor:dcf
  • Note
    Valuation anchor absent: anchored_pe.
    anchor:anchored_pe

Equation Inputs

Everything feeding the v0.3.0 model — value anchors, the stock's own price behaviour, and the tunable knobs.

Value anchors (from deep analysis)

Price at call$78.57
Composite fair value$64.01
Signal-adjusted fair value$64.01
DCF fair value
Anchored-PE fair value
Buy-below (value lens)$60.00
Value net score-65
Value confidence7 / 10
Quality net score+16
Memo confidence7 / 10
Deserved value (base)$64.01
Quality tilt+3.2%
Deserved value (used)$66.06
Coherence (value × quality)0.50

Price behaviour (trailing — shapes the realism line)

Realized volatility (annualized) 1m 50.8%  3m 50.6%  6m 49.3%  
Daily σ (realism noise)3.2%
Beta vs S&P 500 1m 2.00  3m 1.84  5m 1.63  
Trailing 6-month return-25.2%

Knobs (equation params)

Deserved wt · DCF0.5
Quality tilt cap (±)0.2
Horizon reach (6mo)0.45
Coherence floor (conflict)0.5
Conviction gain / pt0.06
Realism mean-reversion φ0.85
Conviction floor0.4
Deserved wt · composite0.5
Realism vol window3m
Neutral band (%)5
Horizon (months)6
Realism σ fallback0.015

Version & Tech Chain

What produced this prediction — stamped on the record so versions can be compared by success rate later.
Model v0.3.0 #6bd904191719

Tech composition (what this version is built from)

#ProcessKindGroup
1 Synthesis valuation-synthesis deterministic final
2 Scenario Analysis scenario-valuation deterministic valuation
3 Valuation / Mispricing ext-lens-value llm extended
4 Company Quality ext-lens-quality llm extended
5 Forensic Memo (combiner) ext-forensic-memo llm extended
6 Classification company-classification llm foundation
7 Live Quote fmp-quote data market-data

Inputs used (the runs that fed this prediction)

Upstream processRanLagRun id
company-classification Jun 12, 2026 freshest BLDR-20260612-030001-a172
ext-forensic-memo Jun 12, 2026 freshest ext-BLDR-20260612-030723-1360
ext-lens-quality Jun 12, 2026 freshest ext-BLDR-20260612-030723-1360
ext-lens-value Jun 12, 2026 freshest ext-BLDR-20260612-030723-1360
scenario-valuation Jun 12, 2026 freshest BLDR-20260612-030001-a172
valuation-synthesis Jun 12, 2026 freshest BLDR-20260612-030001-a172

Inputs flagged 7d+ behind the freshest one may be stale relative to the rest of the analysis.

Saved History

4 frozen snapshots — the record we score once predictions mature.
MadeModelCallAt callTargetExp.Eval due
Aug 29, 2026 v0.6.0 Neutral $67.72 $64.50 -4.8% Mar 2027 view
Aug 4, 2026 v0.6.0 Bull $72.48 $80.00 +10.4% Feb 2027 view
Jul 14, 2026 v0.3.0 Neutral $75.27 $73.54 -2.3% Jan 2027 view
Jun 12, 2026 v0.3.0 Neutral $78.57 $76.26 -2.9% Dec 2026 viewing

Not Yet Modeled

What this v0.3.0 forecast deliberately ignores — the work ahead, in plain sight.
  • Signal-adjusted fair value ($64.01) — the red-flag-adjusted anchor isn't the primary input yet (we use the raw DCF/composite blend, which double-counts DCF).
  • Recent momentum / drift — the line takes off straight; the trailing 6-month move (-25.2%) doesn't bend the slope.
  • Market beta — computed (1–5mo) for context but does not condition the path.
  • Earnings dates, catalysts, and known events — not modeled.
  • Macro regime & sector rotation — not modeled.
  • Horizon is a fixed 6-month assumption, not a modeled time-to-target.
  • Outcome scoring — predictions aren't yet graded against realized price once the evaluation date passes.