Financial research concept

Market Maker Trading Days

Market maker trading days measure the normalized number of market days used to convert annual trading economics into average daily performance.

By Lee BaileyPublished Sep 22, 2026
Research context

See what supports this page, how current it is, and where comparable or historical context is available.

Research date
Sep 22, 2026Use the dated article and cited sources for the definition, examples, and stated limitations.
Operating-model context
12 connected conceptsPart of the reviewed Market Making Operating Model; issuer definitions remain distinct where disclosed.
Company examples
1 reviewed companyRelationships reflect supported examples, not a normalized cross-company KPI ranking.
  1. Why it matters
  2. Investor caution
  3. Part of the Market Making Operating Model
  4. See It in Company Research
  5. Continue Research

Market maker trading days measure the trading-day denominator used to normalize annual trading economics into average daily performance.

Virtu uses a trading-day count in its average daily Adjusted Net Trading Income calculation and adjusts for shortened trading sessions.

Why it matters

Two annual periods can contain different numbers or lengths of tradable sessions. The denominator helps investors distinguish calendar opportunity from per-day trading productivity.

Investor caution

Trading-day normalization does not standardize the quality of those days.

Volatility, volumes, spreads, market closures, and asset-class opportunity can differ materially from one session to another.

Source:

Trading days are a normalization denominator, not a measure of market activity by themselves.

Part of the Market Making Operating Model

Connect trading income, direct transaction and financing economics, daily normalization, and Market Making versus Execution Services segment mix to understand electronic market-making economics.

How the model fits together
  • Spread capture and daily trading intensity: Trading Income, Net captures realized and unrealized trading gains and losses, while Adjusted Net Trading Income broadens the view to related commissions, financing income, financing expense, and direct transaction costs. Average daily Adjusted Net Trading Income divides that issuer-defined measure by a normalized trading-day denominator. These measures are related but should not be treated as standardized industry profitability metrics.
  • Direct trading revenue and cost bridge: Trading income, interest and dividends income, and commissions plus technology services contribute to the trading revenue base, while brokerage, exchange, clearance, order-flow, interest, and dividend expenses offset that economics. Virtu combines these lines in its non-GAAP Adjusted Net Trading Income framework, so the bridge is issuer-defined rather than a universal accounting subtotal.
  • Market Making and Execution Services mix: Market Making revenue captures the principal liquidity-provision segment while Execution Services revenue captures the client-oriented execution and workflow business. Their revenue-mix ratios show consolidated business composition, not segment profitability or a standardized measure of trading risk.

See It in Company Research

These companies are examples of how the concept is reported or discussed in public filings. Definitions can differ by issuer; these links open company research rather than a normalized metric comparison.

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