Posit UK

Posit UK is the United Kingdom and EMEA-facing brand of POSIT, the institutional liquidity and execution platform operated by Virtu Financial, Inc. POSIT is one of the longest-established non-displayed equity trading venues in the world, and under Virtu's ownership it has been extended into a multi-regional, multi-asset offering. The UK entity, Posit UK, is associated with POSIT MTF, the multilateral trading facility that Virtu operates for European clients, complementing the US POSIT ATS and the POSIT Alert block-crossing service. Virtu Financial is a global market maker and financial technology firm. Its official materials describe the company as combining market structure expertise and execution technology to provide deep liquidity and competitive bids and offers in over 25,000 securities, at over 235 venues, in 37 countries worldwide. POSIT sits within this ecosystem as the client-facing liquidity venue: a non-displayed pool where institutional investors can execute equity trades with minimal information leakage, supported by anti-gaming methodologies and transparency disclosures. For UK and European clients, Posit UK / POSIT MTF provides access to Virtu's liquidity pools alongside regulatory disclosures, FIX and connectivity specifications, market data specifications, and trading statistics. Virtu publishes POSIT MTF regulatory disclosures, FIX and connectivity guides, market data specifications, trading statistics, and halted-instrument notices, reflecting the transparency commitments the firm emphasizes in its public communications. Posit UK is not a standalone listed company; it is part of Virtu Financial, Inc., which is publicly traded on Nasdaq under the ticker VIRT. The brand is therefore best understood as a product and venue brand within a larger listed financial-technology and market-making group, serving institutional clients such as asset managers, hedge funds, and banks that need non-displayed liquidity and execution services in UK and European equities.

POSIT has its origins in the institutional equity trading world as one of the earliest non-displayed crossing networks, allowing asset managers to trade large blocks of stock without displaying their intentions to the broader market. Over time, POSIT evolved from a single US venue into a multi-regional platform. The UK-facing brand, Posit UK, is tied to POSIT MTF, the multilateral trading facility that Virtu operates for European clients under UK and EU regulatory frameworks. Virtu Financial, Inc. acquired ITG (Investment Technology Group) in 2019, bringing POSIT and related execution businesses into the Virtu group. Following that acquisition, Virtu integrated POSIT into its broader liquidity and execution offering, alongside its market-making business and its Virtu MatchIt venue. Virtu's official transparency page lists POSIT ATS, POSIT Alert, POSIT MTF, and Virtu MatchIt as the group's liquidity pools, with corresponding regulatory disclosures, FIX specifications, and trading statistics published for each. For the UK and EMEA region, POSIT MTF operates as a multilateral trading facility, providing non-displayed execution for European equities. Virtu publishes POSIT MTF regulatory disclosures, FIX and connectivity guides, market data specifications, trading statistics, and halted-instrument notices. The brand is positioned within Virtu's stated commitment to transparency, which the firm describes as a foundation of integrity that enables market participants to make better-informed decisions and increases market efficiency. Virtu Financial itself is a global market maker and financial technology company. Its official materials state that it provides competitive bids and offers in over 25,000 securities, at over 235 venues, in 37 countries worldwide. POSIT and Posit UK sit within this global footprint as the client-facing, non-displayed liquidity venues, complementing Virtu's principal market-making activity. The firm also emphasizes community engagement, noting that since 2013 it has volunteered more than 10,000 hours through its Give Back program. As of the available evidence, Posit UK remains an active brand within Virtu Financial, Inc., which is publicly listed on Nasdaq under the ticker VIRT. The brand continues to serve institutional clients seeking non-displayed liquidity and execution services in UK and European markets.

• 2019

  Virtu Financial, Inc. acquires ITG (Investment Technology Group), bringing POSIT into the Virtu group.

• Virtu publishes POSIT MTF regulatory disclosures, FIX and connectivity guides, and market data specifications for European clients.

• Virtu's Give Back program surpasses 10,000 volunteer hours since 2013.

Institutional non-displayed liquidity venue and execution platform emphasizing transparency, anti-gaming methodologies, and deep liquidity across global markets.

• POSIT ATS

  US non-displayed alternative trading system for institutional equity trading.

• POSIT MTF

  European multilateral trading facility providing non-displayed execution for UK and EMEA clients.

• POSIT Alert

  Block-crossing service that notifies subscribers of liquidity opportunities.

• POSIT Auction

  Auction mechanism for executing larger trades.

• Virtu MatchIt

  Virtu's non-displayed matching venue, listed alongside POSIT in Virtu's liquidity pool disclosures.

1. 1VIRTU Financial Inc. – Official Websitevirtu.com
2. 2About – VIRTU Financial Inc.virtu.com
3. 3Awards – VIRTU Financial Inc.virtu.com
4. 4Transparency – VIRTU Financial Inc.virtu.com
5. 5Posit UK – Wikidatawikidata.org