diff --git a/frontend/src/pages/CompanyDetail.tsx b/frontend/src/pages/CompanyDetail.tsx
index d3620dc..54309bd 100644
--- a/frontend/src/pages/CompanyDetail.tsx
+++ b/frontend/src/pages/CompanyDetail.tsx
@@ -629,12 +629,12 @@ function TrendHistoryChart({ trends, ticker }: { trends: TrendSummary[]; ticker:
                   domain={[0, 100]}
                   tick={{ fill: '#94a3b8', fontSize: 11 }}
                   tickLine={{ stroke: '#475569' }}
-                  tickFormatter={(v: number) => `${v}%`}
+                  tickFormatter={(v) => `${v}%`}
                 />
                 <Tooltip
                   contentStyle={{ backgroundColor: '#1e293b', border: '1px solid #334155', borderRadius: '8px' }}
                   labelStyle={{ color: '#94a3b8' }}
-                  formatter={(value: number, name: string) => [`${value}%`, name]}
+                  formatter={(value, name) => [`${value}%`, name]}
                 />
                 <Legend wrapperStyle={{ color: '#94a3b8', fontSize: 12 }} />
                 <Line