diff --git a/app/Http/Controllers/Admin/OtherController.php b/app/Http/Controllers/Admin/OtherController.php
index cea013b..57f5274 100755
--- a/app/Http/Controllers/Admin/OtherController.php
+++ b/app/Http/Controllers/Admin/OtherController.php
@@ -1138,8 +1138,9 @@ class OtherController extends CommonController
 
             case 'cover_stock_total':
                 // 重点上市公司明细 - 使用模型方法
-                $companies = CourseSign::shangshi($start_date, $end_date, $course_ids, true);
-                foreach ($companies as $company) {
+                $companiesData = CourseSign::shangshi($start_date, $end_date, $course_ids, true);
+                foreach ($companiesData as $item) {
+                    $company = $item['company'];
                     $data[] = [
                         'company_name' => $company->company_name,
                         'company_legal_representative' => $company->company_legal_representative ?? '',
diff --git a/app/Models/CourseSign.php b/app/Models/CourseSign.php
index 9dfe829..cc97210 100755
--- a/app/Models/CourseSign.php
+++ b/app/Models/CourseSign.php
@@ -789,7 +789,7 @@ class CourseSign extends SoftDeletesModel
             }
 
             // 转换为数组并返回
-            return collect(array_values($result));
+            return array_values($result);
         } else {
             // 返回统计数据
             return $companies->count();