Question: How is L.F. Rothschild different from Investment Technology Group in terms of their core functions?

Context paragraphs:
Angelo, Gordon &amp; Co.: Angelo Gordon & Company is an American alternative investment manager founded in November 1988 by John M. Angelo and Michael L. Gordon who together ran the arbitrage department of L.F. Rothschild in the 1980s. <ref name="WallstreetOasis.com/Angelo, Gordon & Co."> </ref>

Transaction cost analysis: Transaction cost analysis (TCA), as used by institutional investors, is defined by the "Financial Times" as "the study of trade prices to determine whether the trades were arranged at favourable prices – low prices for purchases and high prices for sales".  It is often split into two parts – pre-trade and post-trade.  Recent regulations, such as the European Markets in Financial Instruments Directive, have required institutions to achieve best execution.  This has resulted in the emergence of a number of companies who make TCA a central offering, such as Investment Technology Group, Bloomberg, Trade Informatics, Markit, and many others.

L.F. Rothschild: L.F. Rothschild (later known as L.F. Rothschild, Unterberg, Towbin) was a merchant and investment banking firm based in the United States and founded in 1899.  The firm collapsed following the 1987 stock market crash.

Disability insurance: Disability Insurance, often called DI or disability income insurance, or income protection, is a form of insurance that insures the beneficiary's earned income against the risk that a disability creates a barrier for a worker to complete the core functions of their work.  For example, the worker may suffer from an inability to maintain composure in the case of psychological disorders or an injury, illness or condition that causes physical impairment or incapacity to work.  It encompasses paid sick leave, short-term disability benefits (STD), and long-term disability benefits (LTD).  Statistics show that in the US a disabling accident occurs, on average, once every second.  In fact, nearly 18.5% of Americans are currently living with a disability, and 1 out of every 4 persons in the US workforce will suffer a disabling injury before retirement.

Investment Technology Group: Investment Technology Group, Inc. is a United States-based multinational agency brokerage and financial markets technology firm aimed at a hedge fund and asset management clientele.  One of the first suppliers of electronic trading services, ITG launched the industry’s second anonymous electronic trade matching system, POSIT, in 1987 (Instinet Cross was launched in 1986).  ITG has since expanded its business to include tools for portfolio management, pre-trade analysis, order management, trade execution, and post-trade evaluation.

Mount Street Club: The Mount Street Club was a charity in Ireland for the unemployed of Dublin.  Its premises were at 81–82 Lower Mount Street, allotments beside the railway line at Sydney Parade and Merrion, and a farm in Clondalkin.  Men as members could earn ‘tallies’ which they could exchange for food, clothing, fuel or furniture on a barter or time-banking system.  It was founded in 1934 by James Hardress de Warenne Waller and Philip Somerville-Large.  Members produced or obtained food, clothing, and furniture.  Lessons in making and repairing works were given, and applied to items donated to the club.  The clubhouse had leisure facilities, a kitchen and dining-room for 100, workshops, washing facilities, and a barbershop.  The club was most successful during The Emergency of the Second World War, when it had 6,000 members.  In 1939, Seanad Éireann debated a motion that the Land Commission should donate farmland to the club to alleviate food shortages in the city.  By the 1970s its core functions had been superseded by the Department of Social Welfare.  The work of the Mount Street Club evolved over the years, and in the 1970s and 1980s it supported start-up businesses and set up training schemes for the unemployed.  In the 1990s it was involved in regenerating the Grand Canal Dock.  The club's property was sold in 2006 and it was incorporated as a charitable trust, the Mount Street Club Trust in 2007.  It continues to work on projects that give support to those suffering from the effects of unemployment in the Greater Dublin Area.

APL syntax and symbols: The APL programming language is distinctive in being "symbolic" rather than "lexical": its primitives are denoted by "symbols", not words.  These symbols were originally devised as a mathematical notation to describe algorithms.  APL programmers often assign informal names when discussing functions and operators (for example, product for ×/) but the core functions and operators provided by the language are denoted by non-textual symbols.

N M Rothschild &amp; Sons: N M Rothschild & Sons Limited or Rothschild Group (commonly referred to as Rothschild) is a British multinational investment banking company controlled by the Rothschild family.  It was founded in the City of London in 1811 and now serves as the British division of Rothschild & Co, a global firm with 57 offices around the world.  It is the 7th oldest bank in continuous operation in the United Kingdom.

Sam Greenblatt: Sam Greenblatt Was the vice president of technology and architecture (CTO) in the Enterprise Solution Group of the Dell Corrporation, he is heavily involved in the architecture, communication and technical promotion of Dell's Enterprise family of products.  He helps to drive the ESG company's development teams toward a strong and unified architectural construct, while externally translating and communicating the technology vision to customers, new prospective partners and the industry as a whole.  Prior he was GM for Critical Systems Management at HP working with the delivery and the client organizations on complex integration, software development, architecture, cloud, product management, and project management for all Americas customers having critical issues.  He will assist and participate in transition and transformation of critical situations and develop new operational models for each account as needed.  Sam’s goal is to resolve critical existing situations and assist in business development to prevent issues that will result in satisfied shareholders and customers.  Prior he was Chief Technology Officer for webOS and its technical strategy and project at Hewlett-Packard Prior to that he was in charge of Enterprise Business Solutions architecture as the CTO, previously CTO for HP.com and CTO for the LaserJet Enterprise Solutions group and General Manager of Core Technologies IPG within Hewlett-Packard's Imaging and Printing Group.  He also ran the Core Technology Group which is responsible all software within both LaserJet and Inkjet Technology.  Greenblatt spearheaded HP's move into alliance partnerships with Adobe and Microsoft by transitioning internal developed software to partner software.  He has transformed HP's IPG software development process by moving them to Agile software development, metrics-based testing, and joint quality programs with customer support and external partners to increase IPG market share through usability and quality.

Centre for Development of Imaging Technology: The Centre for Development of Imaging Technology(C-Dit) was established by the government of Kerala in 1988 for the advancement of research, development and training in imaging technology.  C-DIT has four groups, each specialising in a core area, viz.  Communication Group, Technology Group, Education & Training Group and Operations Group.  C-DIT functions as a Total Solutions Provider to the departments and agencies under the government of Kerala in the areas of ICT applications and in supply of holography based security products.

Supporting paragraphs: L.F. Rothschild Investment Technology Group
Answer: L.F. Rothschild (later known as L.F. Rothschild, Unterberg, Towbin) was a merchant and investment banking firm based in the United States