diff --git a/Modules/ExchangeModule.cs b/Modules/ExchangeModule.cs
index 8a4b0c40062b0f8822e1e397b07b06a5f1dd7b56..5b2b1b739dc16b0404d85fb356692d568a6081fc 100644
--- a/Modules/ExchangeModule.cs
+++ b/Modules/ExchangeModule.cs
@@ -1,10 +1,11 @@
 using System;
 using System.Collections.Generic;
 using System.Linq;
-
+using System.Text;
 using Microsoft.EntityFrameworkCore;
 
 using Nancy;
+using Nancy.Responses;
 
 using Newtonsoft.Json;
 
@@ -418,26 +419,101 @@ namespace FIORest.Modules
             public int? BidCount { get; set; }
             public double? Bid { get; set; }
             public int? Demand { get; set; }
+
+            public string CsvRow()
+            {
+                var builder = new StringBuilder();
+                builder.Append('"');
+                builder.Append(MaterialTicker);
+                builder.Append("\",\"");
+                builder.Append(ExchangeCode);
+                builder.Append("\",\"");
+                builder.Append(MMBuy?.ToString() ?? "");
+                builder.Append("\",\"");
+                builder.Append(MMSell?.ToString() ?? "");
+                builder.Append("\",\"");
+                builder.Append(PriceAverage?.ToString() ?? "");
+                builder.Append("\",\"");
+                builder.Append(AskCount?.ToString() ?? "");
+                builder.Append("\",\"");
+                builder.Append(Ask?.ToString() ?? "");
+                builder.Append("\",\"");
+                builder.Append(Supply?.ToString() ?? "");
+                builder.Append("\",\"");
+                builder.Append(BidCount?.ToString() ?? "");
+                builder.Append("\",\"");
+                builder.Append(Bid?.ToString() ?? "");
+                builder.Append("\",\"");
+                builder.Append(Demand?.ToString() ?? "");
+                builder.Append('"');
+                return builder.ToString();
+            }
+
+            public static string CsvHeader()
+            {
+                var builder = new StringBuilder();
+                builder.Append('"');
+                builder.Append(nameof(MaterialTicker));
+                builder.Append("\",\"");
+                builder.Append(nameof(ExchangeCode));
+                builder.Append("\",\"");
+                builder.Append(nameof(MMBuy));
+                builder.Append("\",\"");
+                builder.Append(nameof(MMSell));
+                builder.Append("\",\"");
+                builder.Append(nameof(PriceAverage));
+                builder.Append("\",\"");
+                builder.Append(nameof(AskCount));
+                builder.Append("\",\"");
+                builder.Append(nameof(Ask));
+                builder.Append("\",\"");
+                builder.Append(nameof(Supply));
+                builder.Append("\",\"");
+                builder.Append(nameof(BidCount));
+                builder.Append("\",\"");
+                builder.Append(nameof(Bid));
+                builder.Append("\",\"");
+                builder.Append(nameof(Demand));
+                builder.Append('"');
+                return builder.ToString();
+            }
         }
 
         private Response GetAll()
         {
             using(var DB = PRUNDataContext.GetNewContext())
             {
-                return JsonConvert.SerializeObject(DB.CXDataModels.OrderBy(c => c.MaterialTicker).ThenBy(c => c.ExchangeCode).Select(c => new MinifiedCXDataModel()
+                var minified = 
+                    DB.CXDataModels
+                        .OrderBy(c => c.MaterialTicker)
+                        .ThenBy(c => c.ExchangeCode)
+                        .Select(c => new MinifiedCXDataModel()
+                        {
+                            MaterialTicker = c.MaterialTicker,
+                            ExchangeCode = c.ExchangeCode,
+                            MMBuy = c.MMBuy,
+                            MMSell = c.MMSell,
+                            PriceAverage = c.PriceAverage.RoundToDecimalPlaces(2),
+                            AskCount = c.AskCount,
+                            Ask = c.Ask.RoundToDecimalPlaces(2),
+                            Supply = c.Supply,
+                            BidCount = c.BidCount,
+                            Bid = c.Bid.RoundToDecimalPlaces(2),
+                            Demand = c.Demand
+                        });
+
+                Response response;
+                if (Request.Headers.Accept.FirstOrDefault()?.Item1 == "text/csv")
+                {
+                    response = new TextResponse(string.Join("\n", new [] {MinifiedCXDataModel.CsvHeader()}.Concat(minified.Select(m => m.CsvRow()))));
+                    response.Headers["Content-Type"] = "text/csv";
+                }
+                else
                 {
-                    MaterialTicker = c.MaterialTicker,
-                    ExchangeCode = c.ExchangeCode,
-                    MMBuy = c.MMBuy,
-                    MMSell = c.MMSell,
-                    PriceAverage = c.PriceAverage.RoundToDecimalPlaces(2),
-                    AskCount = c.AskCount,
-                    Ask = c.Ask.RoundToDecimalPlaces(2),
-                    Supply = c.Supply,
-                    BidCount = c.BidCount,
-                    Bid = c.Bid.RoundToDecimalPlaces(2),
-                    Demand = c.Demand
-                }).ToList());
+                    response = new TextResponse(JsonConvert.SerializeObject(minified));
+                    response.Headers["Content-Type"] = "application/json";
+                }
+                return response;
             }
         }