diff --git a/src/index.ts b/src/index.ts
index 4a66d9b..8679f1c 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -1,23 +1,12 @@
-import { PortfolioProvider } from "./interface/portfolio";
-import { QuoteProvider } from "./interface/quote";
+import { Exchange } from "./interface/exchange";
+import { Position, Portfolio, PortfolioProvider } from "./interface/portfolio";
+import { Quote, QuoteProvider } from "./interface/quote";
 
-/**
- * Represents an exchange, which provides access to a portfolio provider and a quote provider.
- */
-export interface Exchange {
-
-    /**
-     * The portfolio provider for the exchange.
-     */
-    readonly portfolioProvider: PortfolioProvider;
-
-    /**
-     * The quote provider for the exchange.
-     */
-    readonly quoteProvider: QuoteProvider;
-
-    /**
-     * The name of the exchange.
-     */
-    readonly name: string;
-}
+export {
+    Exchange,
+    Position,
+    Portfolio,
+    PortfolioProvider,
+    Quote,
+    QuoteProvider
+}
\ No newline at end of file
diff --git a/src/interface/exchange.ts b/src/interface/exchange.ts
new file mode 100644
index 0000000..a396215
--- /dev/null
+++ b/src/interface/exchange.ts
@@ -0,0 +1,23 @@
+import { PortfolioProvider } from "./portfolio";
+import { QuoteProvider } from "./quote";
+
+/**
+ * Represents an exchange, which provides access to a portfolio provider and a quote provider.
+ */
+export interface Exchange {
+
+    /**
+     * The portfolio provider for the exchange.
+     */
+    readonly portfolioProvider: PortfolioProvider;
+
+    /**
+     * The quote provider for the exchange.
+     */
+    readonly quoteProvider: QuoteProvider;
+
+    /**
+     * The name of the exchange.
+     */
+    readonly name: string;
+}
\ No newline at end of file