Nobody wants to buy Steve Cohen's giant penthouse, which is back on the market for a discounted $67.5 million

Once again, billionaire hedge funder Steven A. Cohen is seeking a buyer for his Manhattan duplex penthouse.

The mansion in the sky is now up for grabs for $67.5 million - down $4.5 million from its last listing price in May. He first put it on the market in 2013, when it was offered for $115 million. He later listed it for $98 million, then again for $79 million, and then for $72 million.

Cohen, who runs Point72 Asset Management - formerly SAC Capital - picked up the apartment for $24 million in 2005. He hired the late architect Charles Gwathmey to redesign the 9,000-square-foot space, which has five bedrooms and six baths. Located at One Beacon Court - part of the Bloomberg Tower complex - it's in a prime location on the southeast corner of Central Park.

It's listed with Richard Steinberg and Matthew Slosar of Douglas Elliman Real Estate.

Raisa Bruner wrote an earlier version of this post.