The St Croix Capital Companies is an integrated and diversified group of firms that provide investment, development, management and brokerage services. If you’re seeking top-tier professionals with a deep understanding of the Austin market, you’ve found your team.The St Croix Capital Companies is an integrated and diversified group of firms that provide investment, development, management and brokerage services. If you’re seeking top-tier professionals with a deep understanding of the Austin market, you’ve found your team.