diff --git a/oesnuj/README.md b/oesnuj/README.md
index 7449522..d0b1139 100644
--- a/oesnuj/README.md
+++ b/oesnuj/README.md
@@ -16,4 +16,5 @@
 | 12차시 | 2024.07.24 | 재귀 | [하노이 탑](https://www.acmicpc.net/problem/1914)  | [#41](https://github.com/AlgoLeadMe/AlgoLeadMe-10/pull/41) |
 | 13차시 | 2024.07.28 | DP | [부녀회장이 될테야](https://www.acmicpc.net/problem/2775)  | [#44](https://github.com/AlgoLeadMe/AlgoLeadMe-10/pull/44) |
 | 14차시 | 2024.08.05 | 해시 | [ 나는야 포켓몬 마스터 이다솜 ](https://www.acmicpc.net/problem/1620)  | [#46](https://github.com/AlgoLeadMe/AlgoLeadMe-10/pull/46) |
+| 15차시 | 2024.08.10 | 그리디 | [ 주식 ](https://www.acmicpc.net/problem/11501)  | [#47](https://github.com/AlgoLeadMe/AlgoLeadMe-10/pull/47) |
 ---
diff --git "a/oesnuj/\352\267\270\353\246\254\353\224\224/11501.js" "b/oesnuj/\352\267\270\353\246\254\353\224\224/11501.js"
new file mode 100644
index 0000000..de6d06b
--- /dev/null
+++ "b/oesnuj/\352\267\270\353\246\254\353\224\224/11501.js"
@@ -0,0 +1,21 @@
+const filepath = process.platform === 'linux' ? '/dev/stdin' : './input.txt';
+const input = require('fs').readFileSync(filepath).toString().trim().split('\n');
+
+let answer ="";
+for(let i = 2; i < input.length; i += 2) {
+    answer += calc(i) + "\n";
+}
+console.log(answer);
+
+function calc(i){
+    let stockFlow = input[i].split(' ').map(Number);
+    let profit = 0;
+    let maxPrice = 0;
+    for(let j = stockFlow.length - 1; j >= 0; j--) {
+        if (stockFlow[j] > maxPrice) {
+            maxPrice = stockFlow[j];
+        }
+        profit += maxPrice - stockFlow[j];
+    }
+    return profit;
+}
\ No newline at end of file