Will FIX disclose a single-quarter revenue or profit reversal exceeding $25M on contract estimate revisions before December 31, 2026?

Comfort Systems' historical track record on cost-to-cost is clean — no recent material reversals. Conservative project controls demonstrated by 100% FCF conversion suggests no working-capital surprises. CFO explicit pricing-for-risk + workforce methodology incorporates cushion. Surety bonding requirements force margin discipline at acceptance. Black Swan Beacon at 10-15% probability for compound 'Cost Overrun Materialization' scenario — directly aligned. Probability ~12%.

Slight elevation: $12.45B backlog scale creates statistical risk of single $25M surprise (~0.2% of backlog). Modular ramp 3M→4M sq ft involves new construction and process integration — schedule risk during ramp could create cost overruns on simultaneous customer contracts. 3 acquisitions integrating in FY2026 — inherited contracts may surface revisions. Three quarterly print windows provide multiple disclosure opportunities. ~16%.

Deloitte's CAM disclosure is normal for percentage-of-completion contractors and does not indicate elevated risk — it indicates audit attention. The fact that no reversal has surfaced through Q1 2026 in the cycle's most acute period (massive backlog ramp + integration of acquisitions) suggests project controls are robust. Cycle-driven cost growth would have surfaced in 2025 if it were going to. Probability low ~10%.

Probability bounded by Black Swan compound scenario (10-15% for cost overrun materialization). Three quarterly windows provide multiple opportunities but each independent disclosure event is unlikely. Modular ramp + acquisition integration are the credible YES paths. ~13%.

Adjusting slightly upward: cost-to-cost recognition is binary risk by nature — once it surfaces, can be material. Larger backlog amplifies. With acquired companies' inherited contracts being audited differently for first time in FY2026 + modular ramp execution risk, ~15% seems reasonable.

Track record is the dominant evidence. No reversal in FY2025 despite massive backlog ramp suggests project controls scaling well. Probability ~11%.

Black Swan compound scenario at 10-15% + clean historical track record + CFO pricing methodology + 100% FCF conversion → ~12%.

Modular ramp execution + acquisition integration + $12.45B backlog scale create statistical risk → ~13%.

Conservative pricing methodology + clean track record + scaling controls → ~10%.