diff --git a/fin_defs/__init__.py b/fin_defs/__init__.py
index bf65ad7..82c2f16 100644
--- a/fin_defs/__init__.py
+++ b/fin_defs/__init__.py
@@ -30,6 +30,11 @@ class StockExchange:
 @enforce_typing.enforce_types
 @dataclasses.dataclass(frozen=True)
 class Asset:
+    """An identifier representing some abstract financial asset.
+
+    Subtypes represent the various asset types in existence, for example fiat
+    currencies, stocks or even crypto currencies.
+    """
 
     def names(self) -> list[str]:
         return COMMON_NAMES.get(self, [])