John Siska
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John Siska Email & Phone Number

Managing Director at Eccleston Partners at Eccleston Partners
Location: Greater Madrid Metropolitan Area, Spain, Spain 15 work roles 7 schools
1 work email found @ecclestonpartners.com LinkedIn matched
✓ Verified May 2026 4 data sources Profile completeness 100%

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Work email j****@ecclestonpartners.com
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Current company
Role
Managing Director at Eccleston Partners
Location
Greater Madrid Metropolitan Area, Spain, Spain
Company size

Who is John Siska? Overview

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Quick answer

John Siska is listed as Managing Director at Eccleston Partners at Eccleston Partners, a company with 4 employees, based in Greater Madrid Metropolitan Area, Spain, Spain. AeroLeads shows a work email signal at ecclestonpartners.com and a matched LinkedIn profile for John Siska.

John Siska previously worked as Managing Director at Eccleston Partners and Non-Executive Director at Banco Inversis. John Siska holds Investment Management Workshop from Harvard Business School.

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Email format at Eccleston Partners

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{first_initial}{last}@ecclestonpartners.com
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Profile bio

About John Siska

Senior Executive - Broad and deep understanding of the global capital markets - wholesale and investment banking, institutional investment management, equities brokerage, and wealth management. Created, re-engineered, and run businesses with P&L responsibility.Risk and Wealth Manager - Implementation of best practices in risk governance and investment management. Authorized and regulated by CNMV. Professor of Risk Management and Governance at IE Business School.Experienced Non Executive Director - Currently, NED of Inversis Banco. Previously, NED and Chair of the Audit Committee of BlackRock Absolute Return Strategies Fund, a LSE listed company. NED of Aperios Emerging Connectivity Funds. Chairman - CFA Institute Growth Fund. Former Trustee of the Reuters Pension Plan, NED of Antares (Telefónica), and member of the Advisory Board of KPMG in Spain.Industry Recognition - Credibility and leadership. Former Board Member of the International Society of Financial Analysts and the Global Council of the CFA Institute. Founding President of CFA Institute, Spain. Coauthor of Investment Securities, published by McGraw Hill in the US.

Listed skills include Capital Markets, Portfolio Management, Hedge Funds, Asset Management, and 36 others.

Current workplace

John Siska's current company

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Eccleston Partners
Eccleston Partners
Managing Director at Eccleston Partners
spain
Employees
4
AeroLeads page
15 roles · 44 years

John Siska work experience

A career timeline built from the work history available for this profile.

Managing Director

Current

Madrid

Institutional and HNWI advisory services on strategic asset allocation and investment policy, risk management, and investment process design. Based in Madrid. Personally authorized and regulated by CNMV.

Jan 2004 - Present

Non-Executive Director

Current

Madrid

Inversis is a leading provider of global technology solutions and outsourcing services to financial institutions, insurance companies, and new players in the distribution of investment products.inversis is wholly owned by Banca March.

Feb 2020 - Present

Senior Advisor

Current

Madrid

AltamarCAM is a leading global alternative asset manager in Europe. AltamarCAM has received the EMEA Fund of Funds Private Equity manager award for the last three years.Advise institutional and UHNWI clients on investment policy with a focus on private assets. Lead a series of white papers on private asset classes.

Sep 2016 - Present

Assistant Professor - Risk Management And Governance

Madrid

Teach a 12-session course in the EMBA and MSc in Finance programs. Also participate in in-company programs. "Excellence in Teaching" Award, 2014-2015.IE Business School is ranked #3 Master in Finance Worldwide and #1 European Business School by Financial Times. Ranked #8 in the world by FT for Executive MBA Programs.

Mar 2012 - Jun 2018

Non-Executive Director - Aperios Funds

Bottom-up stock-specific emerging market equity fund. Hedge Funds Review, European Awards 2015, " Best Emerging Hedge Fund Manager of the Year" and "Best sub $100MM Hedge Fund".

Nov 2011 - Oct 2016

Non-Executive Director - Blackrock Absolute Return Fund

Fund of Hedge Funds. Listed in the London Stock Exchange. Chair of the Audit Committee.

Jun 2008 - Aug 2014

Advisory Board - Investment Management

Madrid Area, Spain

Oct 2010 - Jun 2012

Non-Executive Director - Antares

Madrid

Insurance company managing Telefonica´s defined benefit pension liabilities.

Feb 2009 - Feb 2011

Trustee

London, United Kingdom

Employee-nominated Trustee of the Reuters Pension Plan

Jan 2003 - Jan 2004

Head Uk

London

Led Instinet on the back of best execution and transaction costs, portfolio trading technology and independent research. Developed a thorough understanding of best practices in execution and the venues available to institutional investors to manage market impact and trading costs.

Jun 2002 - Jun 2003

Head, Paneuropean Client Account Management, Equities

London

Member of the European Management team. Aligned PanEuropean research, sales and trading teams to the needs of our Top 75 clients. Rolled out new tools to measure performance and contribution. Gained priceless insights as to the state of the institutional asset management industry.

Jun 2000 - Mar 2002

Director General, Equities, Spain & Portugal

Madrid

Joined ABN to gain P&L responsibility and to drive forward an underperforming business. Created new teams in research and sales. Earned a #4 ranking in the Greenwich survey for Pan European sales, up from #12, and a #4 ranking from Reuters for our Spanish equity research.

Oct 1998 - Jun 2000

Chief Investment Officer - Equities, Santander Asset Management

Madrid

Managed €7 billion and a team of 15 professionals in the research, portfolio construction and execution teams. Created and run asset management units in Luxembourg and Dublin. Earned the FT/Expansion Award for the best performing European equity fund and the “Award to the Financial Innovation” for structuring and launching the first guaranteed retail funds.

Mar 1991 - Sep 1998

Vicepresident

Madrid

Wholesale Banking and Capital Markets. Madrid, Spain.Managed the domestic corporate banking unit. Executed lending, risk management and capital markets transactions.Bank merged into JP Morgan.

1987 - 1991 ~4 yrs

Second Vicepresident

Continental Illinois National Bank

Chicago And Mexico City

Wholesale Banking and Capital Markets. Spent 9 months in the MBA Banking and Credit Training Program.Bank merged into Bank of America.

1982 - 1987 ~5 yrs
7 education records

John Siska education

Investment Management Workshop

Joint program with CFA Institute. First attended in 1995. The industry does indeed change and even disruptors are being disrupted !

Msc - Finance, Summa Cum Laude

Activities and Societies: Beta Gamma Sigma, International Relations Club, Student Senate, National Honor Society - The Financial.

FAQ

Frequently asked questions about John Siska

Quick answers generated from the profile data available on this page.

What company does John Siska work for?

John Siska works for Eccleston Partners.

What is John Siska's role at Eccleston Partners?

John Siska is listed as Managing Director at Eccleston Partners at Eccleston Partners.

What is John Siska's email address?

AeroLeads has found 1 work email signal at @ecclestonpartners.com for John Siska at Eccleston Partners.

Where is John Siska based?

John Siska is based in Greater Madrid Metropolitan Area, Spain, Spain while working with Eccleston Partners.

What companies has John Siska worked for?

John Siska has worked for Eccleston Partners, Banco Inversis, Altamarcam Partners, Ie Business School, and Aperios Partners.

How can I contact John Siska?

You can use AeroLeads to view verified contact signals for John Siska at Eccleston Partners, including work email, phone, and LinkedIn data when available.

What schools did John Siska attend?

John Siska holds Investment Management Workshop from Harvard Business School.

What skills is John Siska known for?

John Siska is listed with skills including Capital Markets, Portfolio Management, Hedge Funds, Asset Management, Investment Banking, Risk Management, Financial Markets, and Investments.

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