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Functional Delta: 010 Pricing Awareness and Market Data

Parent state: 005-messaging-nats-replacement

Added​

  • Trade execution pricing (trade.price) with 3-decimal precision.
  • Position pre-aggregated volume-weighted average cost basis (position.averageCostBasis).
  • Market price stream topics (pricing.<TICKER>) from a new price-publisher component.
  • Startup-assigned per-ticker volatility band profile for synthetic pricing bounds (20% @ ±4%, 60% @ ±2%, 20% strict open/close).
  • UI valuation fields: market price, position value, unrealized P&L, portfolio totals.
  • Position blotter OPEN column and directional market marker (▲/▼/■) against open price.
  • Conditional valuation highlighting in position blotter for market-price/open and value-vs-cost comparisons.
  • Trade ticket selected-security live price stream subscription from pricing.<TICKER>.
  • Shared supported ticker universe configuration across reference-data and price-publisher.
  • Reference-data ticker normalization from FB to META for this state.
  • Price publisher randomized batch cadence: publish every 750-1500ms (default) for random subset (25% default).
  • Expanded default sample symbol set includes financial-services institutions used in TraderX demos (MS, UBS, C, GS, DB, JPM, COF, DFS, FNMA, FIS, FNF).

Changed​

  • trade-service now enriches submitted trade orders with current price before NATS publication.
  • trade-processor now computes and persists average cost basis per account/security on every trade.
  • Trade blotter now includes execution price and relative execution timestamp rendering.
  • Position blotter now updates value and P&L in real time from price stream ticks.
  • Position blotter now applies semantic styling and marker cues for quick up/down valuation reading.
  • Runtime ticker lists are now intentionally constrained to a shared supported set for consistency across validation, pricing, and UI.

Removed​

  • No runtime component removals in this state.

Flow Impact​

  • F2 (trade submission and processing): now includes price lookup and persisted execution price.
  • F4 (real-time blotter updates): now includes market price stream consumption and valuation refresh.
  • F1 (ticket entry + reference data): now includes consistent supported symbols aligned with streaming pricing universe.