diff --git a/frontend/src/pages/MarketEvents.tsx b/frontend/src/pages/MarketEvents.tsx
index c3569f6..e1ba30f 100644
--- a/frontend/src/pages/MarketEvents.tsx
+++ b/frontend/src/pages/MarketEvents.tsx
@@ -51,6 +51,13 @@ interface MarketEvent {
   evaluated?: boolean
 }
 
+function resolveFormula(formula: string, coefs: Record<string, GraphCoef>): string {
+  return formula.replace(/\{\{(\w+)\}\}/g, (_, k) => {
+    const v = coefs[k]?.value
+    return v !== undefined ? String(v) : `[${k}]`
+  })
+}
+
 interface CausalAnalysis {
   id: number
   market_event_id: number
@@ -63,7 +70,7 @@ interface CausalAnalysis {
   prediction_json: Record<string, number>
   actual_json: Record<string, number>
   drift_json?: Record<string, any>
-  graph_json?: { nodes: GraphNode[]; edges: GraphEdge[] }
+  graph_json?: GraphData
 }
 
 interface TemplateRef {
@@ -73,9 +80,10 @@ interface TemplateRef {
   instruments: string[]
 }
 
-interface GraphNode { id: string; label: string; type: string; x: number; y: number; unit?: string; instrument?: string }
-interface GraphEdge { from: string; to: string; style?: string; sign?: string }
-interface GraphData  { nodes: GraphNode[]; edges: GraphEdge[] }
+interface GraphNode { id: string; label: string; type: string; x: number; y: number; unit?: string; instrument?: string; formula?: string }
+interface GraphEdge { from: string; to: string; style?: string; sign?: string; label?: string }
+interface GraphCoef { value: number; description?: string }
+interface GraphData  { nodes: GraphNode[]; edges: GraphEdge[]; coefficients?: Record<string, GraphCoef> }
 
 // ── Constants ─────────────────────────────────────────────────────────────────
 
@@ -764,6 +772,7 @@ function EventDetail({
                 const isExpanded = expandedAnalysis === a.id
                 const gNodes = a.graph_json?.nodes || []
                 const gEdges = a.graph_json?.edges || []
+                const gCoefs = a.graph_json?.coefficients || {}
                 const allVals: Record<string, number> = { ...(a.inputs_json || {}), ...(a.prediction_json || {}) }
                 const inputNodes = gNodes.filter(n => n.type === 'input')
                 const outputNodes = gNodes.filter(n => n.type === 'market_asset' || n.type === 'output')
@@ -842,17 +851,24 @@ function EventDetail({
                           {midNodes.length > 0 && (
                             <div>
                               <div className="text-[10px] text-slate-500 uppercase tracking-wider mb-1">Propagation</div>
-                              <div className="flex flex-wrap gap-1">
+                              <div className="space-y-0.5">
                                 {midNodes.map(n => {
                                   const v = allVals[n.id]
                                   if (v === undefined) return null
                                   const fmt = n.unit === 'pips' ? Math.round(v).toString()
-                                    : n.unit === '%' ? v.toFixed(2) + '%'
-                                    : v.toFixed(3)
+                                    : n.unit === '%' ? v.toFixed(3) + '%'
+                                    : v.toFixed(4)
+                                  const formula = n.formula ? resolveFormula(n.formula, gCoefs) : null
                                   return (
-                                    <span key={n.id} className="bg-slate-800/60 border border-slate-700/40 text-slate-300 px-1.5 py-0.5 rounded font-mono text-[10px]">
-                                      {n.label}: <span className={v > 0 ? 'text-teal-400' : v < 0 ? 'text-orange-400' : 'text-slate-500'}>{v > 0 ? '+' : ''}{fmt}</span>
-                                    </span>
+                                    <div key={n.id} className="flex items-baseline gap-2 flex-wrap">
+                                      <span className="text-slate-400 text-[10px] font-medium shrink-0">{n.label}:</span>
+                                      <span className={clsx('font-mono text-[10px] font-bold shrink-0', v > 0 ? 'text-teal-400' : v < 0 ? 'text-orange-400' : 'text-slate-500')}>
+                                        {v > 0 ? '+' : ''}{fmt}
+                                      </span>
+                                      {formula && (
+                                        <span className="text-[9px] text-slate-600 font-mono truncate">= {formula}</span>
+                                      )}
+                                    </div>
                                   )
                                 })}
                               </div>
@@ -862,21 +878,29 @@ function EventDetail({
                           {outputNodes.length > 0 && (
                             <div>
                               <div className="text-[10px] text-slate-500 uppercase tracking-wider mb-1">Prédictions vs Réel</div>
-                              <div className="flex flex-wrap gap-1">
+                              <div className="space-y-0.5">
                                 {outputNodes.map(n => {
                                   const pred = allVals[n.id]
-                                  const actual = (a.actual_json || {})[n.id] ?? (a.actual_json || {})[n.instrument || '']
-                                  const fmt = (x: number) => `${x > 0 ? '+' : ''}${Math.round(x)}${n.unit === 'pips' ? 'p' : ''}`
+                                  const actual = (a.actual_json || {})[n.id]
+                                    ?? (a.actual_json || {})[n.instrument || '']
+                                    ?? (a.actual_json || {})[(n.instrument || '').toUpperCase()]
+                                  const fmt = (x: number) => `${x > 0 ? '+' : ''}${Math.round(x)}${n.unit === 'pips' ? 'p' : n.unit === '$/oz' ? '$' : ''}`
+                                  const formula = n.formula ? resolveFormula(n.formula, gCoefs) : null
                                   return (
-                                    <span key={n.id} className={clsx('border px-2 py-0.5 rounded font-mono text-[10px]',
-                                      pred > 0 ? 'bg-emerald-900/20 border-emerald-700/30 text-emerald-400' :
-                                      pred < 0 ? 'bg-red-900/20 border-red-700/30 text-red-400' :
-                                                 'bg-slate-800/60 border-slate-700/40 text-slate-400')}>
-                                      {n.label}: {pred !== undefined ? fmt(pred) : '—'}
-                                      {actual !== undefined && (
-                                        <span className="text-slate-500 ml-1">/ réel {fmt(actual)}</span>
+                                    <div key={n.id} className="flex items-baseline gap-2 flex-wrap">
+                                      <span className={clsx('border px-1.5 py-0.5 rounded font-mono text-[10px] shrink-0',
+                                        pred > 0 ? 'bg-emerald-900/20 border-emerald-700/30 text-emerald-400' :
+                                        pred < 0 ? 'bg-red-900/20 border-red-700/30 text-red-400' :
+                                                   'bg-slate-800/60 border-slate-700/40 text-slate-400')}>
+                                        {n.label}: {pred !== undefined ? fmt(pred) : '—'}
+                                        {actual !== undefined && (
+                                          <span className="text-slate-500 ml-1.5">/ réel {fmt(actual)}</span>
+                                        )}
+                                      </span>
+                                      {formula && (
+                                        <span className="text-[9px] text-slate-600 font-mono truncate">= {formula}</span>
                                       )}
-                                    </span>
+                                    </div>
                                   )
                                 })}
                               </div>