Question: Nomura Holdings and Mediobanca, share which industry?

Context paragraphs:
Nomura Holdings: Nomura Holdings, Inc. (野村ホールディングス株式会社) is a Japanese financial holding company, and a principal member of the Nomura Group.  It, along with its broker-dealer, banking and other financial services subsidiaries, provides investment, financing and related services to individual, institutional and government customers on a global basis with an emphasis on securities businesses.

Nomura Group: Nomura Holdings, Inc. (野村ホールディングス株式会社) is a Japanese financial holding company, and a principal member of the Nomura Group.  It, along with its broker-dealer, banking and other financial services subsidiaries, provides investment, financing and related services to individual, institutional and government customers on a global basis with an emphasis on securities businesses.

Poste Vita and Poste Assicura: According to a research of Ricerche e Studi (a subsidiary of Mediobanca), Poste Vita Group was the 4th largest insurances company in Italy by gross premiums, according to 2014 data.  Another research by PricewaterhouseCoopers, shown the insurer was ranked 2nd by market share in life insurance (14.0%), but not in the top 5 in non-life insurance.

List of Book Girl light novels: "Book Girl" is a collection of Japanese light novels written by Mizuki Nomura, with illustrations by Miho Takeoka.  The novels share the common title "Book Girl" (文学少女 , Bungaku Shōjo ) , which is where the series gets its name.  The series centers around Konoha Inoue, a writer in high school who joined the literature club after meeting Tohko Amano, the president and sole member of the club.  Tohko can only eat stories by consuming the paper they are printed on and Tohko often asks Konoha to write her short stories as "snacks".

Cattolica Assicurazioni: Società Cattolica di Assicurazione – Società Cooperativa known as Cattolica Assicurazioni is an Italian insurance company.  According to Ricerche e Studi, a subsidiary of Mediobanca, the group had a €5,382,471,000 (in 2014 financial year) gross premiums written making it the 6th largest Italian insurance company, or the fifth excluding Allianz, a subsidiary of the German insurer.  Research by PricewaterhouseCoopers, showed the insurer as being ranked 4th by market share in non-life insurance (6.4%), but not in the top 5 in life insurance.

Koji Nagai: Koji Nagai is a Japanese business executive.  He serves as the Chief Executive Officer of Nomura Holdings ().

Mediobanca: Mediobanca is an Italian investment bank founded in 1946 at the initiative of Raffaele Mattioli (at that time CEO of Banca Commerciale Italiana, the largest commercial bank in Italy which promoted its incorporation together with Credito Italiano) and Enrico Cuccia to facilitate the post-World War II reconstruction of Italian industry.  Cuccia led Mediobanca from 1946 to 1982.  Today, it is an international banking group with offices in Frankfurt, London, Madrid, Moscow, New York and Paris.

Nomura Securities: Nomura Securities Co., Ltd. (野村證券株式会社 , Nomura Shōken Kabushiki-gaisha , NSC) is a wholly owned subsidiary of Nomura Holdings, Inc. (NHI), which forms part of the Nomura Group.  It plays a central role in the securities business, the Group's core business.  Nomura is a financial services group and global investment bank.  Based in Tokyo and with regional headquarters in Hong Kong, London, and New York, Nomura employs about 26,000 staff worldwide.  It operates through five business divisions: retail (in Japan), global markets, investment banking, merchant banking, and asset management.

Nomura Babcock &amp; Brown: Nomura Babcock & Brown Co. Ltd. (NBB) is a Japanese investment firm and subsidiary of the Nomura Group.  It was established in 1986 as a joint venture in 1986 between Nomura Securities Co., Ltd. (now known as Nomura Holdings, Inc.), Japan's largest security firm, and Babcock & Brown, an American investment and advisory firm.  During the 1990s, the company became involved in a joint venture with The Walt Disney Company and Interscope Communications.  It produced several films that were released between 1992 and 1995.

Ownership of Arsenal F.C.: The ownership of Arsenal Football Club is considerably different from that of other clubs in English football.  It is owned by a parent company, Arsenal Holdings plc, which has relatively few shares which are infrequently traded.  Historically, the club has been owned by descendants of the Bracewell-Smith and Hill-Wood families, but since 2007 the club has attracted outside interest and two rival tycoons have acquired significant share holdings.  As of 1 July 2011, the majority shareholder in the club is the American Stan Kroenke, who holds 67.05% of the parent company.  His rival, the Russian-Uzbek Alisher Usmanov, owns 30.04%.  Under Takeover Panel rules, Kroenke must in due course make an offer for every available share in the club.

Supporting paragraphs: Nomura Holdings Mediobanca
Answer: financial