GCA, previously known as GCA Savvian Corporation, is an independent global investment bank.
The company offers financial services including mergers and acquisitions advisory services for both public and private companies in buyside, sellside and going-private transactions. The company provides services for hostile defenses, reorganization proceedings, recapitalizations and restructuring services. The company also provides restructuring advisory services and capital markets services, such as placement of common and preferred stock, mezzanine debt, convertible debt, equity lines and roll-up financings, as well as initial public offering advisory services. In addition, it offers secondary direct placement; due diligence and invests in private equity, mezzanine financing, and public equity and debt markets. The company provides its services primarily to technology, media, communications, healthcare, consumer and retail and industrial sectors. The company owned 13 subsidiaries as of December 31, 2012. In April 2014, GCA Savvian established a Tokyo-based wholly owned subsidiary.
Merger with Altium Capital
On the 9 May 2016 GCA Savvian Corporation signed an agreement to merge with Altium Capital (also known as Altium Corporate Finance Group). The merger was completed on 31 July 2016. The combination creates a leading independent international investment bank that operates under the names GCA Altium in Europe and GCA in the United States and Asia. Under the terms of the agreement, a share for share exchange took place whereby GCA acquired the entire issued share capital of Altium in exchange for shares in GCA. 
- June 2014: Advised Aptina Imaging on its acquisition of On Semiconductor for $400 million.
- February 2014: Advised Japanese firm Toray Industries on its purchase of Zoltek for $584 million 
- November 2012: Advised, along with Bank of America Merrill Lynch, Daikin Industries on its purchase of Goodman Global for $3.7 billion 
- September 2012: Advised Quest Software on its sale to Dell for $2.4 billion 
- March 2011: Advised Advantest on its acquisition of Verigy for $1.1 billion 
GCA bankers focus on industries that include:
- Technology & Tech-enabled services
- Media, Digital Media & Communications
- Financial institutions
- Consumer and Retail
- Business services
GCA offices include:
| San Francisco
Ho Chi Minh City
| New York City
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Ofer Abarbanel is a 25 year securities lending broker and expert who has advised many Israeli regulators, among them the Israel Tax Authority, with respect to stock loans, repurchase agreements and credit derivatives. Founder TBIL.co STATX Fund.