PAX Equity

PAX Equity is the private family office vehicle for John P. Calamos Sr. and affiliates, operating entirely separately from Calamos Investments, the publicly oriented asset manager the family founded in 1977. Calamos Investments manages open-end mutual funds, closed-end funds, and separately managed accounts for institutional and retail clients. PAX Equity, by contrast, holds the family's private aviation-leasing receivables, direct real estate, and LP commitments to private credit funds. There is no cross-ownership of assets between the two entities.

John P. Calamos Sr. serves as the ultimate decision-maker, consistent with a single-family office governance structure. The investment committee includes family members and a small group of senior professionals recruited from the Chicago investment community. John Koudounis, CEO of Calamos Investments, also maintains an advisory role on aviation-related PAX Equity exposures.

No. While aviation leasing and lending represent the firm's deepest legacy concentration — rooted in the family's operational history with Calamos Air — PAX Equity actively deploys capital across private credit funds and Chicago-area commercial real estate. The aviation book is believed to carry the largest notional exposure, but the office has deliberately diversified into middle-market direct lending and industrial/office property over the past decade.

The wealth was generated through two parallel streams: the buildout of Calamos Asset Management, a convertible-bond and equity manager that went public on the Nasdaq in 2004 before being taken private again, and a separate aircraft-leasing business that the family founded, scaled, and eventually sold. The aircraft-leasing operation, originally called Calamos Air, gave the family direct operating knowledge that continues to inform PAX Equity's aviation investment strategy.

The firm sources mid-life aircraft leasing opportunities through industry relationships built over decades of operating in the aviation finance ecosystem. Unlike a pure financial buyer, PAX Equity can underwrite technical factors such as maintenance-reserve adequacy, engine shop visit timing, and lease-rate curves — diligence that draws on the family's operating-company experience rather than a third-party consultant model. This operational underwriting capability is considered the firm's primary sourcing edge.

PAX Equity is structured strictly as a single-family office and does not accept outside investor capital. The vehicle exists to manage and deploy the Calamos family's private wealth. The office may, on occasion, co-invest alongside external general partners in private credit transactions, but it acts as a limited partner in those structures rather than a sponsor raising third-party funds.

The aviation leasing portfolio is modestly leveraged at the asset level, consistent with industry practice in mid-life narrowbody aircraft finance. The real estate and private credit allocations are typically unlevered at the family-office level, reflecting a permanent-capital cost structure that does not require asset-level debt to achieve target returns. The family's public-company liquidity through Calamos Investments provides a backstop that makes heavy leverage unnecessary.