NEW YORK/BANGALORE (Reuters) -Warren Buffett's Berkshire Hathaway Inc slashed its stake in Taiwanese contract chip-maker TSMC as well as in some banks in the fourth quarter, while bolstering its holdings in Apple Inc. Berkshire cut its position in Taiwan Semiconductor Manufacturing Co Ltd (TSMC) by 86.2% to 8.29 million sponsored American depositary shares, according to a regulatory filing. The announcement comes roughly three months after Berkshire unveiled it bought more than $4.1 billion worth of TSMC stock, which sent its shares soaring.