During the third quarter, billionaire Ken Griffin cut Citadel's stake in Palantir by 91% while increasing his hedge fund's stake in Alphabet by 20%. Palantir reported encouraging financial results in the third quarter,

The Citadel honcho has decamped to Florida -- and is in the process of cutting ties with the city that he once called home.

The hedge fund founder never moved into the two offloaded dwellings, which were part of a record-breaking four-unit deal in 2017

The unfinished 37th and 38th floors at No. 9 Walton sold for a combined $19 million, the most-expensive residential sale this year.

The billionaire hedge-fund manager sold two No. 9 Walton condos for $19 million, following a move to South Florida.

The apartment at No. 9 Walton, asking $8.5 million, hit the market the same week he sold off two other units in the building