diff --git a/nginx/default.conf b/nginx/default.conf
index 80da544..1a80279 100644
--- a/nginx/default.conf
+++ b/nginx/default.conf
@@ -74,14 +74,14 @@ server {
 	proxy_pass http://stock-lab:8000/api/trade/;
   }
 
-  # portfolio API (Stock Lab)
-  location /api/portfolio/ {
+  # portfolio API (Stock Lab) — trailing slash 유무 모두 매칭
+  location /api/portfolio {
 	proxy_http_version 1.1;
 	proxy_set_header Host $host;
 	proxy_set_header X-Real-IP $remote_addr;
 	proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
 	proxy_set_header X-Forwarded-Proto $scheme;
-	proxy_pass http://stock-lab:8000/api/portfolio/;
+	proxy_pass http://stock-lab:8000/api/portfolio;
   }