1 ROOT node

Recompute Fund NAV art-373-recompute-fund-nav

Recomputes NAV per share from supplied holdings (quantity × supplied price, multi-currency with supplied FX), accruals under a declared day-count convention, liabilities, and shares outstanding, using fixed-point BigInt money math and a declared rounding mode. The component breakdown and input digests feed forward to both Stage 2 and Stage 3.

MCP Call · recompute_fund_nav

{
  "jsonrpc": "2.0",
  "method": "tools/call",
  "params": {
    "name": "recompute_fund_nav",
    "arguments": {
      "fund_id": "FUND-STD-01",
      "valuation_date": "2026-07-18",
      "base_currency": "USD",
      "holdings": [
        {"security_id": "SEC-A", "quantity": 1000, "price": 10.005, "currency": "USD", "fx_rate_to_base": 1},
        {"security_id": "SEC-B", "quantity": 500, "price": 20.02, "currency": "USD", "fx_rate_to_base": 1}
      ],
      "accruals": {
        "income": [{"description": "coupon accrual", "principal": 100000, "annual_rate": 0.05, "days": 30, "day_count_convention": "30/360", "currency": "USD", "fx_rate_to_base": 1}],
        "expense": [{"description": "management fee accrual", "amount": 41.6667, "currency": "USD", "fx_rate_to_base": 1}]
      },
      "liabilities": [{"description": "payable to broker", "amount": 500, "currency": "USD", "fx_rate_to_base": 1}],
      "shares_outstanding": 15000,
      "rounding": {"decimal_places": 2, "mode": "half_up"}
    }
  },
  "id": 1
}

2 PRIMARY PATH node

Test NAV-Error Materiality art-374-test-nav-error-materiality

Compares an erroneous NAV-per-share (e.g. the last-published figure) against the Stage 1 corrected NAV-per-share against a declared materiality policy (the industry half-cent absolute and 1% relative conventions, or the fund's own declared policy). Returns a material/immaterial verdict, affected-period math, and a reprocessing-need indication -- the fund-ops incident artifact that completes the primary NAV-verification path.

MCP Call · test_nav_error_materiality

{
  "jsonrpc": "2.0",
  "method": "tools/call",
  "params": {
    "name": "test_nav_error_materiality",
    "arguments": {
      "fund_id": "FUND-STD-01",
      "valuation_date": "2026-07-18",
      "erroneous_nav_per_share": 10.75,
      "corrected_nav_per_share": 10.68
    }
  },
  "id": 2
}

3 INDEPENDENT RIDER · branches from Stage 1 rider

BRANCHES FROM: art-373-recompute-fund-nav | NOT sequential on Stage 2

Compute Fund Expense Ratios art-375-compute-fund-expense-ratios

Computes gross and net expense ratios and Total Expense Ratio (TER) from supplied gross expense components -- using the SAME declared accrual conventions as Stage 1 -- and average net assets, applying any declared fee waivers/caps strictly in a declared order. This runs independently of Stage 2: it does not consume the materiality verdict, and Stage 2 does not consume this result.

MCP Call · compute_fund_expense_ratios

{
  "jsonrpc": "2.0",
  "method": "tools/call",
  "params": {
    "name": "compute_fund_expense_ratios",
    "arguments": {
      "fund_id": "FUND-STD-01",
      "period_start": "2026-01-01",
      "period_end": "2026-12-31",
      "average_net_assets": 100000000,
      "gross_expense_components": [
        {"description": "management fee", "principal": 100000000, "annual_rate": 0.0075, "days": 365, "day_count_convention": "actual/365"},
        {"description": "admin fee", "amount": 150000},
        {"description": "12b-1 fee", "amount": 100000}
      ],
      "waivers": [],
      "rounding": {"decimal_places": 4, "mode": "half_up"}
    }
  },
  "id": 3
}

NAV Verification Pack