TotalMarketCap

Market cap

$6.289 B

$30.25 -2.26%

Close of 6 Nov 2026

As of 6 Nov 2026, Brookfield Business (BBUC) has a market capitalization of $6.29B. Market cap measures the value of outstanding equity at market prices; company totals combine applicable share classes. Prices and market caps come from Nasdaq, with financial fundamentals from SEC filings. See sources and calculation details.

Revenue

—

Not reported

Earnings

—

Not reported

Shares outstanding

87,720,678

Latest filing cover page

P/E ratio

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Cap ÷ net income

Engineering & Construction, ranked by market cap

All 20 →
  1. #2Comfort Systems UsaFIX$33.5B
  2. #3EMCOR GroupEME$26.0B
  3. #4Brookfield BusinessBBUC$6.29B
  4. #5IESIESC$5.91B
  5. #6ArganAGX$3.64B

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Where these numbers come from

Share counts and financials for Brookfield Business are taken from its own SEC filings via EDGAR: public record, not an estimate. Market cap is shares outstanding multiplied by the latest close. Read the methodology.