Chronology
Eight chapters, 1987 to today.
A youth nonprofit, a consulting career, an operating role, two regulated industries, and a firm of his own — in the order they happened.
1987 — El Segundo
The first presidency
As a boy in El Segundo, California, Brook was an active member of his local Boy Scout troop — the same troop that, together with his sister's Girl Scout troop, founded what would become known as the world's first nonprofit organization founded by kids and run by kids: Tree Musketeers.
In 1987 he became its president — a first leadership role that came earlier than most executives' entire careers.
1987–1994 — The presidency
Seven formative years
Brook served as Tree Musketeers' president from 1987 to 1994, guiding the organization through its formative years.
What those years taught is the grounding he still credits as foundational to who he is today: Scouting and Tree Musketeers together instilled service, discipline, and organizational leadership.
The New York years
Institutional fluency
After graduating from El Segundo High School, Brook moved to New York to attend Hofstra University. Following his studies, he entered the world of management consulting, working closely with hedge funds and private equity firms.
The chapter built a deep, practical fluency in institutional investment structures — experience he would draw on more than a decade later, when he set out on his own.
2007 — The turn
Home to Los Angeles
That chapter came to a close in 2007, when the Global Financial Crisis reshaped the industry and prompted Brook to return home to Los Angeles.
Back in California, he pivoted to operations — the other side of the table from consulting.
After 2007 — The operator's turn
Same-store sales
After 2007, Brook took on a role with a high-end fitness chain, where he focused on improving same-store sales performance.
The experience sharpened his instincts for operational efficiency and measurable growth.
2013 — Private equity
Two regulated industries
In 2013, Brook returned to private equity, working across both the insurance and real estate divisions of a national investment firm.
The role broadened his expertise across two capital-intensive, highly regulated industries. Together with consulting and operations, it rounded out the decade of experience his next move would rest on.
2017 — The wind-down
Three decades of operation
Brook had remained an active volunteer with Tree Musketeers for more than two decades after his presidency ended.
In 2017, alongside his sister and mother, he helped oversee the organization's formal wind-down after three decades of operation. His roots in Scouting and youth civic leadership through Tree Musketeers remain a defining part of his story.
2018 — Alpha
Out on his own
In 2018, drawing on more than a decade of experience across consulting, operations, and private equity, Brook set out on his own — launching his first investment fund and laying the foundation for what would grow into Alpha Capital Management (ACM), Alpha Asset Holdings (AAH), and their affiliated education platforms, the Insurance Education Institute and Advisors Edge.
Today, Brook leads ACM's strategy, growth, and partner relationships, while continuing to build AAH as the long-term foundation of his family's wealth. He lives in Southern California.