Question: What is the formal name of the Investment company that owns the "Cube" at Midland building?

full_context: Document 1: DZ Bank: DZ Bank AG is the second largest bank in Germany by asset size and the central institution for more than 1,000 co-operative banks and their 12,000 branch offices. Within the Volksbanken Raiffeisenbanken Co-operative financial network, which is one of Germany's largest private sector financial service organisations, DZ Bank functions both as a central institution and as a corporate and investment bank.
Document 2: HypoVereinsbank: UniCredit Bank Aktiengesellschaft, better known under its brand name Hypovereinsbank (HVB), is the fifth-largest of the German financial institutions, ranked according to its total assets, and the fourth largest bank in Germany according to the number of its employees. Its registered office is in Munich and it is a member of the Cash Group. Since 2005, UniCredit Bank AG has been a subsidiary of UniCredit S.p.A., an Italian financial service provider with its registered office in Rome and its headquarters in Milan. When the transfer resolution was entered in the commercial register in 2008, the equities of the minority shareholders were transferred to the principal shareholder, UniCredit S.p.A. as part of a squeeze-out. HVB thus became a wholly subsidiary and has not been listed on the stock exchange since this time.
Document 3: Union Investment: Union Investment (formal name Union Asset Management Holding AG) is the investment arm of the DZ Bank Group and part of the cooperative financial services network. It was founded in 1956 and is headquartered in Frankfurt.
Document 4: Old Mutual: Old Mutual plc is an international investment, savings, insurance, and banking group. Established in 1845 in South Africa, it had more than 19 million customers and £394.9 billion assets under management as of 31 December 2016. It is listed on the London Stock Exchange and Johannesburg Stock Exchange and is a constituent of the FTSE 100 Index.
Document 5: Janus Capital Group: Janus Capital Group, Inc. was an American publicly owned investment firm headquartered in Denver, Colorado. The company's asset-management disciplines included growth, core, international, value, mathematical, alternative and fixed-income. These products were sold through advisors and financial intermediaries, to institutional investors and directly to retail investors. Janus Capital Group was created as a result of the January 1, 2003, merger of Janus Capital Corporation into its parent company, Stilwell Financial Inc. Janus Capital Group consists of Janus Capital Management LLC (Janus), INTECH Investment Management LLC (INTECH), and Kapstream Capital Pty Limited (Kapstream), in addition to a range of exchange‐traded products. Additionally, Janus Capital Group owns 80% of Perkins Investment Management (formerly Perkins, Wolf, McDonnell and Company).
Document 6: DVB Bank: DVB Bank SE is part of the DZ BANK Group and a specialist in international transportation finance, based in Frankfurt/Main, Germany.
Document 7: Lever House: Lever House is a seminal glass-box skyscraper at 390 Park Avenue in Midtown Manhattan, New York City. Built in the International Style according to the design principles of Ludwig Mies van der Rohe, the building was designed by Gordon Bunshaft and Natalie de Blois (design coordinator) of Skidmore, Owings and Merrill. Completed in 1952, it was the second curtain wall skyscraper in New York City after the United Nations Secretariat Building. The 307 ft building features an innovative courtyard and public space.
Document 8: UBS: UBS AG is a Swiss global financial services company, incorporated in the Canton of Zurich, and co-headquartered in Zürich and Basel. The company provides wealth management, asset management, and investment banking services for private, corporate, and institutional clients worldwide, and is generally considered to be a bulge bracket bank. In Switzerland, these services are also offered to retail clients. The name "UBS" was originally an abbreviation for the Union Bank of Switzerland, but it ceased to be a representational abbreviation after the bank's merger with the Swiss Bank Corporation in 1998. The company traces its origins to 1856, when the earliest of its predecessor banks was founded.
Document 9: Main Seneca Building: The Main Seneca Building, originally known as the "Marine Midland Trust Company Building" or the "Marine Trust Building," is a 17 story Renaissance Revival style highrise in downtown Buffalo, New York. The building was previously the headquarters for Marine Midland Bank before the bank constructed One Marine Midland Center at 1 Seneca Tower, the tallest building in Buffalo.
Document 10: Johnson Financial Group: Johnson Financial Group, Inc is the holding company of Johnson Bank, Johnson Insurance, as well as Swiss banking company; Banque Franck, Galland & Cie. It has an estimated AUM of $4 billion and is the financial services subsidiary of the larger Johnson Family Enterprises Group of Companies. The company was founded in 1970 but wasn't incorporated until 1989 and has grown from a single bank holding company to a global organization providing a full range of financial services to businesses and individuals. Johnson Financial Group employs 1100 people and has over 40 locations in Wisconsin and Arizona. Helen Johnson-Leipold, one of Samuel Curtis Johnson Jr.'s 4 children, serves as chairman of the company. The company also had equity in Cayman Island-based TransOcean Bank & Trust, Ltd.
Document 11: Solow Building: The Solow Building, located at 9 West 57th Street, is a Manhattan skyscraper built in 1974 and designed by Gordon Bunshaft of Skidmore, Owings and Merrill. It is located just west of Fifth Avenue between the 57th and 58th Street, next to the Bergdorf Goodman department store and the Plaza Hotel. At 50 stories and 689 ft in height, the building's only nearby competitor by height is the GM Building, located one block north and east. Floors above the 23rd floor offer an unobstructed view of northern Manhattan and a complete view of Central Park and The Plaza Hotel.
Document 12: 270 Park Avenue: 270 Park Avenue (also known as the JPMorgan Chase Tower and formerly the Union Carbide Building) is a high-rise office building located in Midtown Manhattan, New York City. It was designed by Natalie de Blois for Skidmore, Owings & Merrill.
Document 13: One Seneca Tower: One Seneca Tower is a skyscraper located in downtown Buffalo, New York. The building was formerly known as One HSBC Center (1999-2013) not to be confused with Five Star Bank Plaza, previously known as One HSBC Plaza and One Marine Midland Plaza and prior to that, as Marine Midland Center (1972-1999), its name was changed in 1999 shortly after Marine Midland's parent company HSBC re-branded the bank as HSBC Bank USA. The building was constructed at a cost of $50 million between 1969 and 1972, and contains over 1200000 sqft of space. Today, the 40 story building still dominates the Buffalo skyline, at 529 ft high. It is an example of modernist style architecture. The building's design is similar to that of the 33 South Sixth building in Minneapolis.
Document 14: Midland Building: The Midland Building is a 280 ft (85m) tall skyscraper located at 250 East Broad Street, Columbus, Ohio. The office building was completed in 1970 and has 21 floors. Thomas E. Stanley designed the building, which is the 19th tallest in Columbus.
Document 15: Marine Midland Building: The Marine Midland Building (also HSBC Bank Building) is a 51-story office building located at 140 Broadway between Cedar and Liberty streets in Manhattan's financial district. The building, completed in 1967, is 688 ft (209.7 m) tall and is known for the distinctive sculpture at its entrance, Isamu Noguchi's "Cube". Gordon Bunshaft of Skidmore, Owings & Merrill, the man who designed the building, had originally proposed a monolith type sculpture, but it was deemed to be too expensive. It is currently owned by Union Investment.
ground_truth: Union Asset Management Holding AG