777 Partners, the Miami-based investment firm, will nearly double its 737 MAX order book with the purchase of 30 additional jets. The new order expands 777 Partners’ commercial aircraft portfolio to a total of 68 737 MAXs, in its fourth order this year for the fuel-efficient, single-aisle jets. Valued at $3.7 billion at list prices, the order will enable 777 Partners to expand 737 MAX operations across the fleet of its affiliated global low-cost carriers. “We’re delighted to be able to announce the almost doubling in size of our order with Boeing,” said Josh Wander, managing partner of 777 Partners.