CMC Magnetics (TPE:2323) sold 780,000 shares of Nanya Technology (TPE:2408) for NT$408.7 million, according to a Monday Taiwan Exchange filing.
The shares were sold between Aug. 14 and Aug. 17, at an average NT$524 each, generating a gain of NT$40 million.
Following the sale, CMC holds 3.7 million Nanya Technology shares, equivalent to a 0.11% stake.
The disposal was made for portfolio management purposes.