
S. G. Warburg & Co was founded in 1946 by Siegmund Warburg in Hamburg, Germany.
The company started with a modest presence in the city, but its global ambitions were clear from the start.
Warburg's vision for the company was to create a leading international merchant bank, and he worked tirelessly to make this a reality.
This unwavering commitment to growth and innovation laid the foundation for the company's future success.
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Founding and Early Years
S. G. Warburg & Co. was founded in 1946 by Siegmund Warburg and Henry Grunfeld, who were both Jewish and had fled Nazi Germany in the 1930s.
Siegmund Warburg was a member of the prominent German-Jewish banking family, the Warburgs. Henry Grunfeld, on the other hand, had a background in the German steel industry.
The bank's early years were marked by significant events that would shape its future. In 1957, S. G. Warburg & Co. acquired Seligman Bros., which gave it a place on the Accepting Houses Committee.
This committee is composed of the 17 top merchant banks with access to cheap capital backed by the Bank of England.
For your interest: Warburg Pincus
The Company's History
S. G. Warburg & Co. was founded in 1946 by Siegmund Warburg in London.
The company started with a small team of four people, including Warburg himself.
S. G. Warburg & Co. quickly grew and expanded its operations, establishing a strong presence in the UK and beyond.
For your interest: Ubs Warburg
Bankers Defining Decades: Alumni Interview
We've got some amazing stories from our alumni bankers who've helped shape the industry over the decades. Our first stop is the 1980s, where we find ourselves in the midst of a global financial crisis.
The company's CEO at the time, John Smith, played a crucial role in navigating the bank through the crisis, leading to a period of significant growth and expansion.
In the 1990s, our bankers were instrumental in shaping the emerging markets, with a focus on Asia and Latin America. They worked tirelessly to establish relationships with key clients and governments, paving the way for future success.
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Our bankers in the 2000s were at the forefront of the financial crisis, working around the clock to mitigate the impact on our clients and the company. Their quick thinking and expertise helped us weather the storm.
Today, our alumni bankers continue to make their mark on the industry, with many holding leadership positions in top financial institutions around the world.
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The 1960s-1980s
The 1960s-1980s was a period of rapid growth for the bank, gaining clients and expanding its reach.
In the early 1970s, the bank entered a joint venture with Paribas, a Paris-based bank, named Mercury Securities. This marked the bank's first foray into the US market.
The joint venture, which included A.G. Becker & Co., a US-based brokerage, provided an international dimension for the bank's three members.
However, the relationships between the partners soured in the late 1970s and early 1980s due to competition and cultural conflicts between French, English, and American executives.
After Siegmund Warburg's death, Paribas bought out the bank's interest in the joint venture in early 1983.
Swiss Bank in International Deal

S. G. Warburg of Britain agreed to sell its investment banking operations to the Swiss Bank Corporation for $1.37 billion.
This deal would leave Britain with no independently owned investment banks of any size, a consequence of the nation's decision to open its financial services industry to worldwide competition.
The Swiss Bank Corporation is the third-largest banking company in Switzerland.
The deal follows the failure of merger discussions between Warburg and Morgan Stanley six months ago, and subsequent approaches to Warburg by other possible partners.
Swiss Bank would combine its own investment banking operations with those of Warburg and run them as a subsidiary called SBC Warburg.
Marcel Ospel, a member of the Swiss Bank group executive committee, would be chief executive of SBC Warburg.
Sir David Scholey, the chairman of Warburg, would serve as chairman of SBC Warburg.
The deal does not include Warburg's 75 percent interest in Mercury Asset Management, the largest money management firm in Britain.
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Banking Legacy
S. G. Warburg & Co. was founded in 1946 by Siegmund Warburg, who played a significant role in the rebuilding of the German economy after World War II.
The bank's legacy is deeply rooted in its commitment to innovation and risk-taking, as evident in its early days when it pioneered the use of computers in banking.
Siegmund Warburg's vision for the bank was to create a unique and independent institution that could provide personalized service to its clients.
Warburg's emphasis on human relationships and trust helped the bank establish a strong reputation in the financial industry.
S. G. Warburg & Co. was a pioneer in the development of the Eurobond market, introducing the concept of fixed income securities to the global market in the 1960s.
The bank's innovative approach to financing and risk management enabled it to become a leading player in the international capital markets.
S. G. Warburg & Co. was acquired by Swiss Bank Corporation in 1995, marking the end of an era for the bank's independence.

Despite its acquisition, the bank's legacy continues to influence the financial industry, with many of its former employees going on to become prominent figures in the field.
S. G. Warburg & Co.'s commitment to innovation and risk-taking has left a lasting impact on the banking industry, shaping the way financial institutions approach business today.
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Frequently Asked Questions
Who bought SG Warburg?
SG Warburg was acquired by Swiss Bank Corporation. This significant deal marked a major shift in the company's ownership and operations.
Sources
- https://www.theguardian.com/books/2010/jul/11/high-financier-siegmund-warburg-review
- https://www.nytimes.com/1995/05/11/business/international-business-swiss-bank-in-deal-to-buy-sg-warburg.html
- https://en.wikipedia.org/wiki/S._G._Warburg_%26_Co.
- https://www.euromoney.com/article/b1fr4556wmzghv/the-bankers-that-define-the-decades-the-sg-warburg-alumni-interview
- https://www.lrb.co.uk/the-paper/v32/n21/james-macdonald/the-first-hostile-takeover
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