Why stop at one $10 million-plus purchase when you can have two?

That seems to be the philosophy of Greg Blatt, chairman of IAC’s Match Group, which includes online dating site Match.com.

Several months ago, Blatt bought a $10.48 million, four-bedroom, five-bathroom condo at 150 Charles St., as Gimme Shelter reported.

Since then, he’s purchased an even bigger, and pricier, split-level penthouse at 415 Greenwich St. — a landmarked neo-Renaissance building — for $11.5 million.

The 4,470-square-foot unit comes with six bedrooms, 5½ bathrooms and 2,766 square feet of outdoor space. It was on the market for $12 million.

Building amenities include a sculpture garden, doorman, resident manager, gym, children’s playroom, landscaped roof deck and garage.

The listing brokers were Raymond Dillulio, Fredrik Eklund, John Gomes and Lisa Interdonato, of Douglas Elliman.