diff --git a/extra/math/finance/finance-tests.factor b/extra/math/finance/finance-tests.factor
index eb4b238f61..0d14bcb6d3 100644
--- a/extra/math/finance/finance-tests.factor
+++ b/extra/math/finance/finance-tests.factor
@@ -1,11 +1,21 @@
-USING: kernel math math.functions math.finance tools.test ;
+USING: kernel math math.functions math.finance sequences
+tools.test ;
 
 IN: math.finance.tests
 
-[ { 1 2 3 4 } ] [ { 1 2 3 4 5 } 1 ema ] unit-test
+[ { 1 2 3 4 5 } ] [ { 1 2 3 4 5 } 1 ema ] unit-test
+[ { 1+1/2 2+1/2 3+1/2 4+1/2 } ] [ { 1 2 3 4 5 } 2 ema ] unit-test
+[ { 2 3 4 } ] [ { 1 2 3 4 5 } 3 ema ] unit-test
 
 [ { 2 4 } ] [ { 1 3 5 } 2 sma ] unit-test
 
+[ { 2 3 4 5 } ] [ 6 iota 2 dema ] unit-test
+
+[ t ] [ 6 iota 2 [ dema ] [ 1 gdema ] 2bi = ] unit-test
+
+[ { 3 4 5 } ] [ 6 iota 2 tema ] unit-test
+[ { 6 7 8 9 } ] [ 10 iota 3 tema ] unit-test
+
 [ { 1 3 1 } ] [ { 1 3 2 6 3 } 2 momentum ] unit-test
 
 [ 4+1/6 ] [ 100 semimonthly ] unit-test