diff --git a/api/api/shares.js b/api/api/shares.js
index d65f75d..64f8346 100644
--- a/api/api/shares.js
+++ b/api/api/shares.js
@@ -45,6 +45,10 @@ router.post('/buy', async (req, res) => {
     return res.status(500).send({message: "This shareholder already owns that share."})
   }
 
+  if (shareholder[0].capital < price) {
+    return res.status(500).send({message: "Insufficient founds."})
+  }
+
   await addTransaction(connection, price, share[0].owner_id, buyer_id, share_id)
   await setShareOwner(connection, share_id, buyer_id)
   if (share[0].owner != -1) {
diff --git a/client/company/main.py b/client/company/main.py
index 2ca432d..19b0d65 100644
--- a/client/company/main.py
+++ b/client/company/main.py
@@ -1,6 +1,8 @@
 import requests
+from time import sleep
+from random import randint
 
-HOST = "http://localhost:3000/"
+HOST = "http://192.168.200.15/"
 
 """Affichage des actions mises en vente par une entreprise
     input : 
@@ -38,5 +40,13 @@ def getCompanies():
     return r.json()
 
 if __name__ == "__main__":
-    pass
+    while True:
+        companies = getCompanies()
+
+        for company in companies:
+            price = randint(20, 2000)
+            for i in range(randint(0, 10)):
+                emmitShare(company["id"], price)
+        
+        sleep(30)
 
diff --git a/client/docker-compose.yml b/client/docker-compose.yml
index 241f9a7..be7491a 100644
--- a/client/docker-compose.yml
+++ b/client/docker-compose.yml
@@ -6,23 +6,9 @@ services:
     networks:
         - bourse
 
-  shareholder1:
+  shareholders:
     build: ./shareholder 
-    container_name: shareholder1
-    restart: always
-    networks:
-        - bourse
-    
-  shareholder2:
-    build: ./shareholder 
-    container_name: shareholder2
-    restart: always
-    networks:
-        - bourse
-
-  shareholder3:
-    build: ./shareholder 
-    container_name: shareholder3
+    container_name: shareholders
     restart: always
     networks:
         - bourse
diff --git a/client/shareholder/main.py b/client/shareholder/main.py
index b8ab1a8..9668589 100644
--- a/client/shareholder/main.py
+++ b/client/shareholder/main.py
@@ -1,15 +1,17 @@
 import requests
+from time import sleep
+from random import randint
 
-HOST = "http://localhost:3000/"
+HOST = "http://192.168.200.15/"
 
 """Achat d'une action par un actionnaire à une entreprise
     input : 
         - idBuyer : identifiant de l'actionnaire
         - idShare : identifiant de l'action
 """
-def buyShare(idBuyer, idShare):
+def buyShare(idBuyer, idShare, price):
     url = HOST + 'api/shares/buy'
-    obj={'id':idBuyer,'share_id':idShare}
+    obj={'id':idBuyer,'share_id':idShare, 'price': price}
     r = requests.post(url, json=obj)
     return r.json()
 
@@ -53,5 +55,13 @@ def getAllBuyers():
     return r.json()
 
 if __name__ == "__main__":
-    pass
+    while True:
+        shareholders = getAllBuyers()
+        shares = getAllShares()
+        
+        for shareholder in shareholders:
+            shareId = randint(0, len(shares) - 1)
+            buyShare(shareholder["id"], shareId, shares[shareId][price] + randint(-20, 20))
+
+        sleep(30)