Skip to main content
BLDRBuilders FirstSource, Inc.Sell5.1·$84.86+10.60%
BLDR · Why this verdict

Why Builders FirstSource (BLDR) is rated SELL

Updated

Model-generated analysis — not investment advice. Not a registered investment advisor. Past performance does not guarantee future results.

Show full disclosure ▾

About TrendMatrix. TrendMatrix is a publisher of general securities research and market commentary. We publish on a regular schedule. All content is the same for every subscriber in a tier — we do not provide personalized investment advice and we do not take into account any individual subscriber's financial situation, investment objectives, risk tolerance, tax situation, or holdings.

Not investment advice. TrendMatrix is not a registered investment adviser. Our content is for informational and educational purposes only. Consult your own licensed investment adviser, broker, or tax professional before making any investment decision.

Conflicts and positions. The TrendMatrix editorial team frequently holds personal long-term positions in securities discussed. We disclose positions held at the time of publication on each piece. We maintain a trading-window policy: we do not initiate or close positions in the same direction as a TrendMatrix publication within 24 hours before or 72 hours after publication.

No paid promotion. TrendMatrix does not accept payment from any issuer, broker, or third party in exchange for coverage of any security. Our sole compensation is subscription revenue.

No fiduciary duty. No fiduciary, advisory, or agency relationship is created between you and TrendMatrix by reading our content or subscribing to our service.

Performance. Past performance is not indicative of future results. Performance figures reflect the published model only and do not reflect any individual subscriber's actual results.

Methodology · Editorial policy & full disclaimer

VerdictSELL
Overall score5.1/10
ConfidenceMEDIUM
MacroNEUTRAL
TrendMatrix Research · core thesis

Engine thesis — one sentence

Builders FirstSource faces a convergence of negative signals: revenue declining at -10%, two consecutive earnings misses in the most recent quarters, a confirmed price downtrend, and an overall business quality score that has fallen below the minimum threshold. The stock screens inexpensive on a forward P/E of 13.2x and PEG of 0.11, but the valuation discount reflects deteriorating fundamentals rather than a mispricing.

Falsifiable statement — pillar-level invalidators below. Engine-derived; not personalized advice.

Thesis pillars

Revenue is declining at -10%, a meaningful contraction that has not yet stabilized and puts upward pressure on the cost structure while compressing operating leverage across the business.

Stable
Growth breakdown
Expectation
Revenue growth turns positive on a year-over-year basis for 2 consecutive reported quarters, signaling the contraction has troughed.

CounterMuch of the revenue decline may be cyclical rather than structural; a recovery in housing or construction activity could restore the top line without any permanent impairment to the business model.

The two most recent reported quarters produced back-to-back misses — a -12.3% miss in February 2026 followed by a -27.6% miss in the most recent quarter — reversing the beat pattern from the two older periods and suggesting the business is tracking below expectations on a fundamental basis.

Stable
Catalyst breakdown
Expectation
EPS surprise exceeds 5% positive for 2 consecutive reported quarters, reversing the recent miss pattern.

CounterThe two older quarters in the trailing four-quarter set both produced beats; if the misses reflect a temporary transition rather than a structural step-down, the pattern can reverse once the comparison base resets.

The stock is below its 200-day moving average with the average itself declining at -7.8% over 30 days — a confirmed downtrend — while the options market shows a put/call ratio of 2.30, reflecting an unusually high level of defensive positioning.

Stable
Momentum breakdown
Expectation
Price closes above the 200-day moving average for 20 or more consecutive trading days and the put/call ratio falls below 1.5, signaling a trend reversal.

CounterMACD is improving and RSI has reached 58, suggesting price momentum is no longer deteriorating; the confirmed downtrend label may be near a turning point even without formal reversal confirmation.

Despite a forward P/E of 13.2x and PEG of 0.11 that appear inexpensive, the overall business quality score has breached the minimum acceptable threshold at 3.8 (below the 4.0 floor), meaning the apparent value discount is accompanied by below-par fundamental quality that limits investability.

Stable
Warnings
Expectation
Business quality score rises above 4.0 for 2 consecutive evaluations as earnings stabilize and the fundamental picture improves.

CounterFree cash flow converts at 220% of net income — a high cash conversion rate — suggesting the cash economics of the business may be stronger than the quality score alone implies, and a recovery in operating results could quickly improve quality metrics.

Per-dimension breakdown

Value

7.4/10data confidence 100%
ComponentSub-score
P/E4.4
P/S10.0
EV/EBITDA5.2
Fwd P/E8.7
PEG10.0
Analyst target5.0
  • Forward P/E: 13.0x
  • PEG: 0.10
  • Attractively valued

Quality

3.8/10data confidence 100%
ComponentSub-score
ROE2.3
ROA2.3
Gross margin2.0
Op margin0.2
Net margin1.0
Current ratio6.3
FCF quality10.0
Moat3.1
Piotroski F6.7
  • Excellent cash conversion: 220% FCF/NI
  • No competitive moat

Growth

5.0/10data confidence 67%
ComponentSub-score
Rev growth0.0
EPS growth10.0
  • Declining revenue: -10%

Momentum

6.9/10data confidence 100%
ComponentSub-score
RSI3.4
MACD10.0
OBV10.0
MA position6.0
Volume5.2
  • Volume accumulation (rising OBV)
  • Below 200-MA, MA slope -8.2%/30d — confirmed downtrend

Sentiment

6.7/10data confidence 100%
ComponentSub-score
LLM sentiment5.5
Analyst rating7.5
Price target7.0

Insider

5.0/10data confidence 50%
ComponentSub-score
materiality5.0
holder change5.1
  • Negligible insider selling — $390,850 (0.005% of mkt cap)

Peer rank

2.5/10data confidence 80%
ComponentSub-score
value rank7.2
quality rank1.6
growth rank1.1

Technical

1.5/10data confidence 100%
ComponentSub-score
bollinger0.0
support resistance0.7
52w position1.3
gap4.0

Risk (lower is worse)

5.1/10data confidence 100%
ComponentSub-score
short interest5.1
days to cover8.2
volatility0.0
put call10.0
implied vol2.7
beta5.2
debt equity4.4
  • High IV: 64%

Catalyst

4.3/10data confidence 100%
ComponentSub-score
erm5.0
earnings history3.3
earnings timing5.0
surprise avg0.0
news activity8.0
  • Earnings concerns: 2B/2M

How the verdict was assembled

Engine trigger

Quality below minimum threshold.

Engine technical detail
verdict_path: L1:HARD_BLOCK
Passed (6)
  • MOMENTUM:6.9>=5.5
  • INSIDER:OK
  • NEWS_EVENTS:NONE_RECENT
  • EARNINGS_PROXIMITY:35d clear
  • SEMI_CYCLE_PEAK:CLEAR
  • MATERIALS_CYCLE_PEAK:CLEAR
Failed (1)
  • ASYMMETRY:0.2<1.5@spot
Warning (2)
  • DEATH_CROSS:momentum=6.9>=5.0 recovering
  • 8K_CSUITE_CHANGE:5.02 (officer departure/appointment)
Reward-to-Risk
0.17
Upside
+2.6%
Downside
15.0%
Sizing output
AVOID

SetupRECOVERY Death cross but MACD improving, RSI 66

EdgeNO_EDGE No clear edge identified

SuitabilityAGGRESSIVE Beta 1.45>1.3

Investment implication

The L1 gate blocked the positive-verdict path: a hard-floor threshold was breached, so dimensional pillars — including Value at 7.4 could not lift the engine output above the verdict floor. Failed gate signal: ASYMMETRY:0.2<1.5@spot.

The strongest dimensions are Value at 7.4, Momentum at 6.9, and Sentiment at 6.7; the weakest are Technical at 1.5, Peer rank at 2.5, and Quality at 3.8. The V9 engine flagged 1 failed gate with 2 warnings, producing an asymmetric reward-to-risk of 0.17 and an engine sizing output of AVOID.

What would invalidate the thesis

Falsifying conditions — when triggered, the corresponding pillar's thesis is invalidated.

  • P1Revenue is declining at -10%, a meaningful contraction that has not yet stabilized and puts upward pressure on the cost structure while compressing operating leverage across the business.

    Trip ifRevenue growth turns positive (above 0%) year-over-year for 2 consecutive reported quarters.

  • P2The two most recent reported quarters produced back-to-back misses — a -12.3% miss in February 2026 followed by a -27.6% miss in the most recent quarter — reversing the beat pattern from the two older periods and suggesting the business is tracking below expectations on a fundamental basis.

    Trip ifEPS surprise exceeds 5% for 2 consecutive reported quarters, reversing the miss streak.

  • P3The stock is below its 200-day moving average with the average itself declining at -7.8% over 30 days — a confirmed downtrend — while the options market shows a put/call ratio of 2.30, reflecting an unusually high level of defensive positioning.

    Trip ifPrice closes above the 200-day moving average for 20 or more consecutive trading days.

  • P4Despite a forward P/E of 13.2x and PEG of 0.11 that appear inexpensive, the overall business quality score has breached the minimum acceptable threshold at 3.8 (below the 4.0 floor), meaning the apparent value discount is accompanied by below-par fundamental quality that limits investability.

    Trip ifOverall quality score rises above 4.0 (the current minimum floor) for 2 consecutive evaluations.

Engine reasoning is mechanically derived from pipeline gate outputs. See decision view.

Home Stocks BLDR Why this verdict