Join

Compare · BLK vs SEIC

BLK vs SEIC

Side-by-side comparison of BlackRock Inc. (BLK) and SEI Investments Company (SEIC): market cap, price performance, sector, and recent activity on the wire.

Summary

  • Both BLK and SEIC operate in Investment Bankers/Brokers/Service (Finance), so they compete in similar markets.
  • BLK is the larger of the two at $154.55B, about 14.4x SEIC ($10.75B).
  • Over the past year, BLK is up 1.0% and SEIC is up 5.3% - SEIC leads by 4.3 points.
  • BLK has been more active in the news (20 items in the past 4 weeks vs 5 for SEIC).
  • BLK has more recent analyst coverage (25 ratings vs 13 for SEIC).
PerformanceBLK+1.01%SEIC+5.28%
2025-06-09+0.00%2026-06-08
MetricBLKSEIC
Company
BlackRock Inc.
SEI Investments Company
Price
$1000.23+0.37%
$88.99-0.48%
Market cap
$154.55B
$10.75B
1M return
-6.34%
-1.03%
1Y return
+1.01%
+5.28%
Industry
Investment Bankers/Brokers/Service
Investment Bankers/Brokers/Service
Exchange
NYSE
NASDAQ
IPO
1999
1981
News (4w)
20
5
Recent ratings
25
13
BLK

BlackRock Inc.

BlackRock, Inc. is a publicly owned investment manager. The firm primarily provides its services to institutional, intermediary, and individual investors including corporate, public, union, and industry pension plans, insurance companies, third-party mutual funds, endowments, public institutions, governments, foundations, charities, sovereign wealth funds, corporations, official institutions, and banks. It also provides global risk management and advisory services. The firm manages separate client-focused equity, fixed income, and balanced portfolios. It also launches and manages open-end and closed-end mutual funds, offshore funds, unit trusts, and alternative investment vehicles including structured funds. The firm launches equity, fixed income, balanced, and real estate mutual funds. It also launches equity, fixed income, balanced, currency, commodity, and multi-asset exchange traded funds. The firm also launches and manages hedge funds. It invests in the public equity, fixed income, real estate, currency, commodity, and alternative markets across the globe. The firm primarily invests in growth and value stocks of small-cap, mid-cap, SMID-cap, large-cap, and multi-cap companies. It also invests in dividend-paying equity securities. The firm invests in investment grade municipal securities, government securities including securities issued or guaranteed by a government or a government agency or instrumentality, corporate bonds, and asset-backed and mortgage-backed securities. It employs fundamental and quantitative analysis with a focus on bottom-up and top-down approach to make its investments. The firm employs liquidity, asset allocation, balanced, real estate, and alternative strategies to make its investments. In real estate sector, it seeks to invest in Poland and Germany. The firm benchmarks the performance of its portfolios against various S&P, Russell, Barclays, MSCI, Citigroup, and Merrill Lynch indices. BlackRock, Inc. was founded in 1988 and is based in New York City with additional offices in Boston, Massachusetts; London, United Kingdom; Gurgaon, India; Hong Kong; Greenwich, Connecticut; Princeton, New Jersey; Edinburgh, United Kingdom; Sydney, Australia; Taipei, Taiwan; Singapore; Sao Paulo, Brazil; Philadelphia, Pennsylvania; Washington, District of Columbia; Toronto, Canada; Wilmington, Delaware; and San Francisco, California.

SEIC

SEI Investments Company

SEI Investments Company is a publicly owned asset management holding company. Through its subsidiaries, the firm provides wealth management, retirement and investment solutions, asset management, asset administration, investment processing outsourcing solutions, financial services, and investment advisory services to its clients. It provides its services to private banks, independent financial advisers, institutional investors, investment managers, investment advisors, wealth management organizations, corporations, retirement scheme sponsors, not-for-profit organizations, hedge fund managers, registered investment advisers, independent broker-dealers, financial planners, life insurance agents, defined-benefit schemes, defined-contribution schemes, endowments, foundations, and board-designated fund, through its subsidiaries. Through its subsidiaries, the firm manages separate client-focused portfolios. It also launches and manages equity, fixed income, and balanced mutual funds, through its subsidiaries. Through its subsidiaries, the firm invests in public equity and fixed income markets. It employs fundamental and quantitative analysis with a focus on top-down and bottom-up analysis to make its investments, through its subsidiaries. SEI Investments Company was founded in 1968 and is based in Oaks, Pennsylvania.