Alternative Trading Systems

Alternative Trading Systems
Industry	Financial services
Products	Securities trading, electronic matching, dark liquidity
Founded	Various (late 20th century)
Key people	Multiple exchange operators, regulators
Headquarters	Global

Alternative Trading Systems

Alternative Trading Systems provide non-exchange venues for matching orders in securities and related instruments, operated by private firms, broker-dealers, and consortiums. These venues complement centralized markets by offering differing rules, technology, and participant access, interacting with entities such as Securities and Exchange Commission, Financial Industry Regulatory Authority, European Securities and Markets Authority, Bank for International Settlements, and International Organization of Securities Commissions.

Overview

Alternative Trading Systems exist alongside established venues like the New York Stock Exchange, NASDAQ, London Stock Exchange Group, Tokyo Stock Exchange, and Deutsche Börse. Operators include firms associated with Citadel LLC, Virtu Financial, Goldman Sachs, Morgan Stanley, Jane Street Capital, ITG, Chi-X Global, Turquoise, and BATS Global Markets. These systems often serve interaction with infrastructure such as Clearing Corporation (DTCC), Euroclear, Clearstream, and trading protocols tied to FIX Protocol and SWIFT. They are used by market makers like DRW Trading, Jump Trading, and Two Sigma Investments as well as institutional investors such as BlackRock, Vanguard Group, State Street Corporation, Fidelity Investments, and PIMCO.

Regulation and Legal Framework

Regulatory oversight involves statutes and agencies including the Securities Exchange Act of 1934, Dodd–Frank Wall Street Reform and Consumer Protection Act, Markets in Financial Instruments Directive II, and rules enforced by the Securities and Exchange Commission, Commodity Futures Trading Commission, Financial Conduct Authority, and national regulators like Autorité des marchés financiers and BaFin. Compliance obligations intersect with standards from International Organization of Securities Commissions, guidance from the Bank for International Settlements, and adjudication in courts such as the United States Court of Appeals for the Second Circuit and the European Court of Justice. Key legal themes reference order display, best execution rules, and transparency obligations originating in cases and rulemakings involving SEC v. Ginsburg precedents and consultations with IOSCO.

Market Structure and Types

Alternative venues cover a spectrum from dark pools to electronic communication networks and multilateral trading facilities. Types include Dark pool operators run by broker-dealers like Barclays Capital and Goldman Sachs Execution & Clearing, electronic communication networks similar to Instinet and Archipelago Exchange, and crossing networks associated with Liquidnet and Pipeline. These types interact with primary exchanges such as NYSE Arca and off-exchange platforms like BATS and Chi-X. Market microstructure scholars reference models by Eugene Fama, Robert Merton, Myron Scholes, and empirical work by researchers at National Bureau of Economic Research and Centre for Economic Policy Research.

Participants and Access

Participants include broker-dealers, proprietary trading firms, high-frequency traders, institutional investors, and investment banks such as JPMorgan Chase, Bank of America, Credit Suisse, UBS, and Deutsche Bank. Access routes involve sponsored access and direct market access from firms like Interactive Brokers and TradeStation, and connectivity via venues maintained by Equinix data centers and network providers such as NYSE Technologies. Market surveillance and membership rules reference organizations including FINRA, SROs, and clearing members like The Depository Trust Company (DTC). Notable participants influencing liquidity include Knight Capital Group and DRW Holdings.

Trading Mechanisms and Technology

Mechanisms include midpoint matching, price-time priority, periodic auctions, and implied liquidity algorithms developed by firms like Flow Traders and IMC Trading. Technology stacks rely on low-latency infrastructure from KCG Holdings and data feeds like Consolidated Tape Association outputs, with matching engines inspired by designs used at NASDAQ OMX and Euronext. Protocols such as FIX Protocol and networking via Equinix NY4 support colocation and algorithmic strategies developed at places like Carnegie Mellon University and Massachusetts Institute of Technology. Risk controls often integrate pre-trade filters and post-trade reconciliation aligned with standards from CFTC and SEC rulebooks.

Advantages and Criticisms

Proponents cite benefits for price improvement, reduced transaction costs, and execution anonymity appealing to managers at BlackRock and Vanguard Group, as well as competition with incumbents like London Stock Exchange Group and Intercontinental Exchange. Critics point to concerns raised by SEC staff and academic studies from Harvard University, Stanford University, and University of Chicago about fragmentation, information leakage, and potential fairness issues favoring firms such as Citadel Securities and Virtu Financial. Policy debates reference reforms similar to MiFID II adjustments and regulatory responses after events involving Knight Capital and market stress episodes analyzed by Federal Reserve Bank of New York researchers.

Historical Development and Notable Examples

The rise of alternative venues followed innovations by Instinet in the 1970s and the technological expansion in the 1990s that produced entities like Archipelago and Island ECN, later consolidated into NASDAQ OMX. Significant milestones include acquisitions by NYSE Group of Archipelago, the emergence of BATS Global Markets and its later merger with CBOE Holdings, and the spread of Dark pools operated by banks and broker-dealers. Notable episodes include market structure reforms triggered by the Decimalization (U.S.) shift, litigation involving SEC enforcement actions, and studies by National Bureau of Economic Research assessing the impact of off-exchange trading on liquidity and price discovery. Contemporary examples include Liquidnet, ITG, Chi-X Global, Turquoise, and operator transitions involving Cboe Global Markets and IEX Group.

Category:Financial markets