 Wallace Weitz Trades, Portfolio, manager of the Weitz Value Fund and Weitz Partners Value Fund, disclosed this week that his firms top five trades during the fourth quarter of 2021 included a new position in Perimeter Solutions SA PRM , Financial, boosts to its holdings in Fidelity National Information Systems Inc. FIS , Financial and CoStar Group Inc. CSGP , Financial and reductions to its positions in Aon PLC AON , Financial and Laboratory Corp of America LH , Financial. 