Alternative Trading Systems (ATS) in Switzerland
Definition
An Alternative Trading System (ATS) is an electronic trading venue that matches orders in securities — or, increasingly, digital assets — without the full regulatory status of a national securities exchange. The term is used primarily in US securities law; the functionally equivalent concept in European and Swiss regulatory frameworks is the Multilateral Trading Facility (MTF).
Both ATS and MTF refer to trading systems that bring together multiple buyers and sellers of financial instruments according to non-discretionary rules — that is, the venue executes trades based on pre-defined order matching logic rather than a dealer’s judgment. This distinguishes them from over-the-counter (OTC) bilateral trading, where trades are negotiated directly between counterparties, and from exchange trading on a regulated stock exchange.
How Alternative Trading Systems Work
An ATS or MTF typically operates an electronic order book — a continuously updated list of outstanding buy and sell orders for each instrument, ranked by price and time. When a buy order and a sell order match on price, the system executes the trade automatically. The venue earns revenue through trading fees (per transaction or volume-based) and, in some cases, data fees charged for access to order book information.
ATS/MTF venues can operate multiple order types and execution models:
Lit order books display all outstanding orders publicly, providing pre-trade price transparency. Participants can see the depth of the order book — how much is available to buy or sell at each price level — before submitting their own orders.
Dark pools execute orders without pre-trade transparency. The prices of outstanding orders are not displayed before execution. Dark pools are used primarily by institutional investors — asset managers, hedge funds, pension funds — who need to execute large orders without revealing their trading intentions to the market. A large visible order on a lit order book can move prices adversely before the order is filled; a dark pool order avoids this information leakage.
Periodic auction mechanisms aggregate orders over a defined time window and match them at a single clearing price determined by supply and demand. This model is used for both regular trading and for auctions in less liquid instruments where continuous order matching would result in wide spreads.
Swiss Regulatory Treatment Under FinMIA
In Switzerland, trading venues — including MTFs — are regulated under the Financial Market Infrastructure Act (FinMIA / FinfraG), which entered into force in January 2016.
Trading venues operating in Switzerland require FINMA authorisation. FinMIA categorises trading venues into three types:
Stock exchanges (Börsen): Regulated trading venues that bring together multiple buyers and sellers and execute trades on a continuous or periodic basis. Stock exchanges are subject to the most stringent regulatory requirements, including full FINMA authorisation, pre- and post-trade transparency requirements, and ongoing supervision of issuers.
Multilateral trading facilities (MTF): Trading venues that operate multilateral systems matching buy and sell orders, subject to less stringent requirements than stock exchanges but still requiring FINMA authorisation as a financial market infrastructure entity.
Organised trading facilities (OTF): A category introduced in alignment with EU MiFID II that covers systems for trading bonds, structured products, derivatives, and emission allowances on a discretionary basis — where the operator exercises some judgment over how orders are placed or matched, unlike the fully non-discretionary MTF model.
Authorisation and supervision: Operators of MTFs in Switzerland require authorisation from FINMA. They must demonstrate organisational adequacy, compliance systems, and governance structures appropriate to their operating model. Post-trade reporting — trades executed on Swiss MTFs must be reported to a licensed trade repository — is required for transparency and market surveillance purposes.
Pre- and post-trade transparency: FinMIA imposes transparency requirements calibrated to venue type. Lit order book venues must display order book depth and execute trades at disclosed prices. MTF operators can apply for waivers from pre-trade transparency for large-in-scale orders and other qualifying categories.
SIX Swiss Exchange vs Alternative Venues
The SIX Swiss Exchange is the primary regulated stock exchange in Switzerland. It lists the shares of Swiss blue-chip companies (SMI constituents including Nestlé, Novartis, Roche, UBS), Swiss bonds, structured products, and ETFs. SIX Exchange operates as a stock exchange under full FINMA authorisation and serves as the reference market for Swiss equities pricing.
Aquis Exchange (operating in Switzerland through its EU and Swiss market presence) and Cboe Europe represent the primary pan-European MTF competition for Swiss equity order flow. These venues compete with SIX by offering lower trading fees and, in some cases, different market microstructure features that institutional traders prefer.
EU equivalence and Swiss equity trading: A significant market structure disruption occurred in 2019 when the EU did not renew its stock exchange equivalence decision for SIX Swiss Exchange. Without EU equivalence, EU-regulated investment firms were barred from trading Swiss-listed shares on EU venues that did not recognise SIX. Switzerland responded by prohibiting EU venues from trading Swiss-listed shares on Swiss issuers without Swiss authorisation. The result was a significant repatriation of Swiss equity trading volume to SIX Exchange, with Swiss equities becoming predominantly traded on Swiss venues. This structural shift has made the Swiss equity market more nationally self-contained than most comparable European markets.
Cboe Switzerland subsequently received FINMA authorisation as a Swiss trading venue, enabling it to trade Swiss-listed shares under Swiss law — partially restoring competition for SIX in the Swiss market.
Dark Pools in the Swiss Market
Dark pools operating in Switzerland or used by Swiss institutional investors are subject to FinMIA’s trading transparency framework. Swiss dark pools must report trades post-execution to a licensed trade repository. FINMA monitors dark pool trading for evidence of market manipulation or order flow internalisation practices that disadvantage clients.
The primary users of dark pool liquidity in Swiss equities are institutional asset managers, hedge funds, and trading desks at Swiss banks executing large equity orders for fund management clients. The advantage — avoiding adverse market impact from visible large orders — is well-established in academic literature on market microstructure.
Implications for Digital Asset Trading
The most forward-looking development in Swiss trading infrastructure is the application of ATS/MTF concepts to digital asset and tokenised securities trading. This innovation sits within Switzerland’s broader fintech ecosystem, which has positioned the country as the global leader in regulated digital asset market infrastructure.
SIX Digital Exchange (SDX): SIX Group operates SDX as a regulated financial market infrastructure for digital assets. SDX holds a FINMA stock exchange licence and a central securities depository (CSD) licence, enabling it to list, trade, and settle digital securities — including bonds tokenised on the SDX platform — within a fully regulated Swiss framework. The settlement model, using a shared DLT ledger, allows simultaneous delivery-versus-payment without the conventional settlement delays of traditional securities infrastructure.
DLT Trading Facility: The 2021 amendments to FinMIA created a new licence category — the DLT Trading Facility — enabling operators to combine trading, clearing, and settlement of DLT-based securities on a single platform. This is a structural innovation: conventional exchanges separate these functions into distinct legal entities (exchange, CCP, CSD). The DLT Trading Facility can integrate them, reflecting the technical architecture of DLT-based settlement where transaction finality is achieved by the ledger itself.
This regulatory infrastructure makes Switzerland the most advanced jurisdiction globally for the development of regulated digital security trading venues — a position that reflects FINMA’s deliberate strategy of creating regulatory frameworks before, rather than after, technological innovation makes them necessary. Fund managers seeking to operate within this infrastructure can explore the FINMA licence application process for the relevant authorisation categories.
This encyclopedia entry is for informational purposes only and does not constitute investment, legal, or regulatory advice. The Vanderbilt Portfolio AG, Zurich.