Equinix made a $125m offer for the site to NYSE Euronext last autumn

 from FT:

 

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A full sale may also allow ICE to offload other assets, such as NYSE’s European technology assets. They include a 25 per cent stake in UK trading technology company Fixnetix and Euronext’s London data centre. Besides Euronext’s stock trading assets, the site also hosts trading venues owned by Goldman Sachs and Société Générale. However the site, which cost $500m to build and is equal to the size of seven football pitches, is only half-full.
Equinix, a US data centre provider, made a $125m offer for the site to NYSE Euronext last autumn, and although it was rebuffed, Equinix’s interest remains serious, two people with the situation have said.