This page explains how to get trade history from c0ban.
1. After logging in, move the mouse over to where your name is at the upper right-hand corner to display the menus. Select "取引履歴"(Trade History).
2. Select "約定履歴"(TD-based History), select date range as "すべて"(All) and click "検索"(Search). After the trade history is retrieved, click "CSVをダウンロードする"(Download as CSV) to download.