This is a story of individual investors who had a warrant trade with Goldman Sachs("GS").
On May 24 in Japan, some Japanese individual customors had made done the trade of a warrant of Japanese-stock with the firm price that GS itself had presented. As a matter of course, the charge of the trade had been actualy transfered to their accounts, and some investors had employed, as usual, those charge to other bonds or so.
GS, however, suddenly violated the trade agreement to be cancelled at the later!!!
GS insists that the pricing of the warrant at that time had been mistaken becouse of the trouble of GS's trade-system, so that the trade was invalid.
And now, GS requires those investors to return the charge of the trade to them. Some investors who already employed the charge will suffer damages if GS's claim were accepted.
WAIT !! Why those investors, or "costomors", should take the responsibility of GS's POOR system? Where is the GS's duties and resposibility as a market-maker?