I ran into a case in PortfolioCenter where the Cost Basis Reconciliation report showed a negative cost basis for several positions that had been sold. Now what?
![Reconciliation Report showing negative cost basis for sold positions](http://www.krisan.com/wp-content/uploads/2013/07/mortgage3-400.jpg)
Reconciliation Report showing negative cost basis for sold positions
The report looked listed 0.00 shares with a negative cost basis in PortfolioCenter (above).
![Sell on day before ROP](http://www.krisan.com/wp-content/uploads/2013/07/Mortgage1.jpg)
Sell on day before ROP
The problem results from ROP transactions that hit the account after the mortgaged backed position had been sold.
![mortgage2-400](http://www.krisan.com/wp-content/uploads/2013/07/mortgage2-400.jpg)
Sell date after ROP
To solve the problem:
- Cancel the sell.
- Change the date of the Interest and ROP to the day before the sell.
- Repost the sell.