How to find rows that meet if else condition

[Anonymous]

Product	stock
Tomato	7899
Orange	43
Banana	-90
Spinach	89

I want to create a measure to find products where the stock level is negative. I am using the following code but not working. 

Total Stock = sumx(Inventory,Inventory[stock])
Short Products = if([Total Stock]<0,Inventory[Product],Blank())

Can anyone help me with this please? I can create a new column in Inventory table but I dont want to do that as it consumes more momory. How can I achieve this using DAX code?

[Anonymous · Accepted solution]

Measure = IF(SUM('Table'[Stock Value])>=0,BLANK(),1)

OR 

Measure = IF(SUM('Table'[Stock Value])>=0,BLANK(),VALUES('Table'[Product]))