diff --git a/agents/stock/workspace/scripts/behive_web.py b/agents/stock/workspace/scripts/behive_web.py
index 9261e52..2fd0afe 100644
--- a/agents/stock/workspace/scripts/behive_web.py
+++ b/agents/stock/workspace/scripts/behive_web.py
@@ -9077,6 +9077,25 @@ window.openPinModal = openPinModal;
 })();</script>
 <style>.rt-vi-badge{display:inline-block;margin-left:6px;padding:0 5px;border-radius:4px;font-size:10px;font-weight:700;color:#1a1205;background:#ffd166;vertical-align:middle}</style>'''
 
+    # 종목명 자동맞춤 — 길어서 잘릴 것 같으면 글씨를 줄여 한 줄에 맞춤(ellipsis 대신). 폭 실측 필요해 JS.
+    # 실시간 가격 갱신(1초)으로 재측정되면 레이아웃 부하 → MutationObserver는 '행 추가(패널 swap)'에만 반응하도록 필터.
+    stock_fit_script = r'''<script>(function(){
+  function fit(el){
+    el.style.fontSize='';  // 먼저 기본 크기로 복원(넓어지면 원복)
+    var min=10, size=parseFloat(getComputedStyle(el).fontSize)||14, guard=0;
+    while(el.scrollWidth>el.clientWidth+1 && size>min && guard++<14){ size-=0.5; el.style.fontSize=size+'px'; }
+  }
+  function fitAll(){ document.querySelectorAll('.line1-held .stock').forEach(fit); }
+  var t=null;
+  function schedule(){ if(t)clearTimeout(t); t=setTimeout(fitAll,80); }
+  function hasRow(n){ return n.nodeType===1 && ((n.matches&&n.matches('.line1-held'))||(n.querySelector&&n.querySelector('.line1-held .stock'))); }
+  new MutationObserver(function(ms){
+    for(var i=0;i<ms.length;i++){ var a=ms[i].addedNodes; for(var j=0;j<a.length;j++){ if(hasRow(a[j])){ schedule(); return; } } }
+  }).observe(document.body,{childList:true,subtree:true});
+  addEventListener('resize',schedule);
+  if(document.readyState!=='loading') schedule(); else addEventListener('DOMContentLoaded',schedule);
+})();</script>'''
+
     return f'''<!doctype html>
 <html lang="ko">
 <head>
@@ -9137,6 +9156,7 @@ window.openPinModal = openPinModal;
   {order_modal_script}
   {stock_name_tip_script}
   {realtime_script}
+  {stock_fit_script}
 </body>
 </html>'''
 
