Further Reading
Chapter 21: Algorithmic Trading Controls and Kill Switches
Essential Reading
European Commission (2017). Commission Delegated Regulation (EU) 2017/589 (RTS 6) — Organizational Requirements for Investment Firms Engaged in Algorithmic Trading. The definitive technical standard implementing MiFID II Article 17 — specifying pre-trade controls, real-time monitoring, kill switch requirements, development and testing protocols, and annual self-assessment requirements. Free at eur-lex.europa.eu. Essential reading for any firm engaged in or advising on algorithmic trading compliance.
ESMA (2018). Guidelines on Algorithmic Trading under MiFID II. ESMA's guidelines supplementing RTS 6 — providing additional clarity on what specific control implementations are expected. Free at esma.europa.eu. Covers: system resilience, pre-trade controls, kill switch expectations, and self-assessment content.
SEC / CFTC (2010). Findings Regarding the Market Events of May 6, 2010 (Flash Crash Report). The joint CFTC/SEC post-mortem analysis of the 2010 Flash Crash — one of the most important documents for understanding how algorithmic trading systems interact and how feedback loops can create systemic events. Free at sec.gov and cftc.gov.
SEC (2013). In the Matter of Knight Capital Americas LLC — Administrative Proceeding. The SEC's order against Knight Capital following the August 2012 algorithmic trading incident — documenting the control failures that led to a $440 million loss in 45 minutes. Free at sec.gov. Essential case study for understanding the regulatory consequences of algorithmic trading control failures.
For Practitioners
FCA (various). Market Watch Newsletter — Algorithmic Trading. The FCA's Market Watch newsletter regularly covers algorithmic trading control themes, including supervisory findings from thematic reviews. Issues 58, 62, 65, and 69 contain particularly relevant observations. Free at fca.org.uk/publications/newsletters.
FCA (2018). Algorithmic Trading Compliance in Wholesale Markets — Thematic Review. The FCA's first major thematic review of algorithmic trading controls post-MiFID II implementation. Identifies common deficiencies: incomplete inventories, inadequate testing documentation, kill switches not tested, stale self-assessments. Free at fca.org.uk.
IOSCO (2011). Regulatory Issues Raised by the Impact of Technological Changes on Market Integrity and Efficiency. IOSCO's analysis of technology and algorithmic trading from an international regulatory perspective. Free at iosco.org. Provides context for why algorithmic trading became a priority regulatory concern.
BIS (2016). Electronic Trading in Fixed Income Markets. BIS Markets Committee report on electronic and algorithmic trading in fixed income markets — covering how algorithmic trading is expanding beyond equities and the specific control challenges in less liquid markets. Free at bis.org.
For the Curious
Lewis, M. (2014). Flash Boys: A Wall Street Revolt. W.W. Norton. Michael Lewis's narrative account of high-frequency trading and its impact on equity markets. While controversial among practitioners, it provides accessible context for understanding algorithmic trading from an investor and market integrity perspective.
Harris, L. (2003). Trading and Exchanges: Market Microstructure for Practitioners. Oxford University Press. The foundational text on market microstructure — covering trading mechanics, order types, market making, and the economics of execution. Essential background for understanding the market environment in which algorithmic trading operates.
Aldridge, I. (2013). High-Frequency Trading: A Practical Guide to Algorithmic Strategies and Trading Systems, 2nd ed. Wiley. Technical treatment of HFT strategies and systems — providing the practitioner context for understanding the trading activity that algorithmic trading regulations are designed to govern.
Rishi K. Narang (2013). Inside the Black Box: A Simple Guide to Quantitative and High-Frequency Trading, 2nd ed. Wiley. Accessible explanation of how quantitative trading systems work — from alpha models through portfolio construction to execution. Useful for compliance professionals who need to understand the strategies they are governing.
Regulatory Primary Sources
| Document | Jurisdiction | Key Relevance |
|---|---|---|
| MiFID II Article 17 | EU | Algorithmic trading obligations |
| RTS 6 (EU 2017/589) | EU | Technical standards — pre-trade controls, kill switch, self-assessment |
| ESMA Algorithmic Trading Guidelines (2018) | EU | ESMA guidance supplementing RTS 6 |
| FCA SYSC 2.1.6R / SYSC 6 | UK | UK equivalent to MiFID II Article 17 post-Brexit |
| CFTC Regulation AT (proposed 2015) | US | US equivalent (not finalized, but consultative) |
| SEC Rule 15c3-5 (Market Access Rule) | US | US pre-trade risk controls for market access |
| Dodd-Frank Section 747 | US | Spoofing prohibition (relevant to algorithmic manipulation) |
| FCA Market Watch (various) | UK | Supervisory observations on algorithmic trading |
| Joint SEC/CFTC Flash Crash Report (2010) | US | Foundational document on algo trading systemic risk |
Technology References
| Resource | Description |
|---|---|
| Order Management Systems (OMS) | |
| Fidessa | Leading OMS for equities and fixed income trading |
| Bloomberg AIM | Asset and Investment Manager OMS |
| SS&C Eze OMS | Institutional OMS with pre-trade risk features |
| Pre-Trade Risk Technology | |
| Fidessa Pre-Trade Risk Controls | Pre-trade filtering integrated with OMS |
| Refinitiv REDI | Trading and risk management platform |
| Kill Switch Implementation | |
| Exchange-native kill switch APIs | Most major exchanges provide direct cancel APIs for emergency order cancellation |
| Simulation / Testing | |
| QuantConnect | Cloud-based backtesting and paper trading platform |
| Interactive Brokers Paper Trading | Paper trading environment for algorithm testing |
| Compliance / Self-Assessment | |
| Droit | Automated trading compliance (regulatory analysis) |
| Behavox | Communications surveillance for trading compliance |