IEX Group vs Block
Side-by-side comparison of AI visibility scores, market position, and capabilities
IEX Group operates the Investors Exchange, a US national securities exchange built on a 350-microsecond speed bump to protect investors from high-frequency trading, holding ~3.2% overall market share as of Q4 2025.
About
IEX Group, Inc. is the operator of the Investors Exchange (IEX), a US national securities exchange regulated by the SEC and designed around principles of fairness, transparency, and investor protection. Founded in 2012 by Brad Katsuyama—whose story was told in Michael Lewis's book Flash Boys—IEX introduced a 350-microsecond "speed bump" that neutralizes latency-based advantages exploited by high-frequency trading firms. The exchange gained national attention as an alternative to incumbent exchanges that critics argued were structured to benefit fast traders at the expense of institutional investors.
San Francisco fintech (NYSE: SQ) added to S&P 500 July 2025; Cash App $5.0B gross profit, Square $3.7B, Afterpay BNPL integration, Jack Dorsey CEO competing with PayPal/Venmo and Stripe for merchant and consumer fintech.
About
Block, Inc. is a San Francisco, California-based financial technology company — publicly traded on the New York Stock Exchange (NYSE: SQ) as an S&P 500 Information Technology component (added to the S&P 500 on July 23, 2025, replacing Hess Corporation) — operating two primary financial platforms: Square (merchant payment processing, point-of-sale hardware, and business banking for small-to-mid-size merchants) and Cash App (peer-to-peer payments, digital banking, stock investing, and Bitcoin transactions for individuals) alongside Afterpay (buy now pay later), Tidal (music streaming), and TBD (decentralized finance), through approximately 12,000 employees. CEO Jack Dorsey (co-founder with Jim McKelvey in 2009 as Square, rebranded to Block in December 2021) leads the company's strategy of building an interconnected ecosystem of financial services that connect individual consumers (Cash App) with merchants (Square) and the broader financial ecosystem. In fiscal year 2024, Block reported gross profit of approximately $8.9 billion, with Cash App generating approximately $5.0 billion in gross profit (+14% year-over-year) driven by Cash App Card, direct deposit adoption, and Cash App Pay, while Square generated approximately $3.7 billion in gross profit (+9%) driven by software and banking products alongside payment processing. Block acquired Afterpay for $29 billion in January 2022 — integrating the Australian buy-now-pay-later platform into both Square (merchant installment offer at checkout) and Cash App (consumer Afterpay integration).
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