BLK vs STT

BlackRock and State Street Corporation, both Financial Services

BlackRock is the larger company at $171B against $47B. On trailing earnings STT is the cheaper of the two at a P/E of 17.1 against 28.1, a gap that is only a bargain if the two are growing at similar rates. Over the past year STT returned +78% against +6.9% for BLK. Ryufin's sector-relative Smart Score puts STT ahead, 5/10 against 4/10.

BlackRock and State Street Corporationcompared on valuation, return and Ryufin’s Smart Score
FigureBLKSTT
Last close$1174$194
Market cap$171B$47B
Trailing P/Elower is cheaper for the same earnings, not automatically better28.117.1
Dividend yield1.8%1.7%
1-year return+6.9%+78%
5-year return+53%+159%
Ryufin Smart Scoresector-relative, 1–104/105/10

Figures from SEC filings and end-of-day closes. Highlighting marks the higher or lower number, which is not the same as the better investment, a low P/E can be a warning and a high one can be deserved.

BlackRock

Revenue of $7.1B in Q2 2026, net income $1.9B. Its largest reported line is Investment Advice, 81% of the disclosed total.

State Street Corporation

Revenue of $4.0B in Q2 2026, net income $1.1B. Its largest reported line is Total, 50% of the disclosed total.

Open these two in the interactive comparison to add more names, change the period or read the correlation.