The short version

From the latest prices and each company's SEC filings. Who's ahead on each measure, not which to buy.

  • BlackRock is the larger company, worth $163.5B, close to Blackstone's $137.9B.
  • Blackstone grew revenue faster over the last year (+35.9% vs +30.6%).
  • Blackstone keeps more of each dollar of revenue as operating profit (47.2% vs 32.6%).
  • On earnings, BlackRock is the cheaper stock (26.5x vs 28.9x).
  • BlackRock's price assumes faster free cash flow growth: about 16% a year, against 10% for Blackstone (reverse DCF).

Side by side

The stronger figure is shaded where higher (or, for valuation multiples, lower) reads as better. How the implied growth works.

MeasureBLKBX
Market cap$163.5B$137.9B
Share price$1,065.35$114.29
Revenue (last fiscal year)$24.2B$14.5B
Free cash flow (last fiscal year)$3.6B$4.5B
Revenue growth, last year+30.6%+35.9%
Revenue growth per year, last 5 fiscal years+5.7%-10.6%
Operating margin32.6%47.2%
Net margin24.1%21.8%
Return on equity11.4%39.0%
P/E (trailing)26.5x28.9x
Price / free cash flow46.0x79.1x
EV / EBITDA14.8x15.7x
FCF growth the price implies15.9%10.4%
Dividend yield2.0%4.4%
Debt / equity1.93x3.05x
Fundamental gradeBB
Superinvestors holding it1010
Insider purchases, last 12 months810

Results from SEC filings

Revenue and free cash flow by fiscal year, from each company's 10-K filings.

BlackRock

YearRevenueFree cash flowOp. margin
2021$19.4B$4.6B38.5%
2022$17.9B$4.4B35.7%
2023$17.9B$3.8B35.1%
2024$20.4B$4.7B37.1%
2025$24.2B$3.6B29.1%

Blackstone

YearRevenueFree cash flowOp. margin
2021$22.6B$3.9B58.0%
2022$8.5B$6.1B41.6%
2023$8.0B$3.8B37.9%
2024$13.2B$3.4B48.5%
2025$14.5B$4.5B46.7%

Where the revenue comes from

BlackRock · by products, 2025

Investment Advisory, Administration Fees and Securities Lending Revenue$19.2B79%
Technology Services and Subscription Revenue$2.0B8%
Investment Advisory Performance Fees$1.4B6%
Distribution Fees$1.4B6%
Advisory and Other Revenue$277M1%

Blackstone

No segment breakdown reported.

Compare them in fullFifteen years of statements, quarterly results, DCF and IRR models, and any number of peers side by side.
Open BLK in Investingly

Questions

Which is bigger, BlackRock or Blackstone?

BlackRock (BLK), at $163.5B against $137.9B.

Is BLK or BX cheaper?

By trailing P/E, BlackRock (26.5x) is cheaper than Blackstone (28.9x). A lower multiple can also mean the market expects less growth.

Which grows faster, BLK or BX?

Blackstone: revenue grew +35.9% over the last year, against +30.6%.

Prices and ratios as of the last daily update; statements from SEC filings. Information only, not investment advice.