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David Alonso Email & Phone Number

Executive Director-Research Sales at William O'Neil + Co., Inc.

Location: San Francisco, California, United States 1 work role

1 work email found @williamblair.com 1 phone found area 312 LinkedIn matched

✓ Verified August 2026 4 data sources Profile completeness 86%

Current company

William O'Neil + Co., Inc.

Role

Executive Director-Research Sales

Location

San Francisco, California, United States

Company size

91 employees

Who is David Alonso? Overview

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Quick answer

David Alonso is listed as Executive Director-Research Sales at William O'Neil + Co., Inc., a with 91 employees, based in San Francisco, California, United States. AeroLeads shows a work email signal at williamblair.com, phone signal with area code 312, and a matched LinkedIn profile for David Alonso.

Company email context

Email format at William O'Neil + Co., Inc.

This section adds company-level context without repeating David Alonso's masked contact details.

{first_initial}{last}@williamblair.com

86% confidence

AeroLeads found 1 current-domain work email signal for David Alonso. Compare company email patterns before reaching out.

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Profile bio

About David Alonso

David Alonso is a Executive Director-Research Sales at William O'Neil + Co., Inc.. He possess expertise in equities, financial modeling, hedge funds, equity research, alternative investments and 12 more skills.

Listed skills include Equities, Financial Modeling, Hedge Funds, Equity Research, and 13 others.

Current workplace

David Alonso's current company

Company context helps verify the profile and gives searchers a useful next step.

William O'Neil + Co., Inc.

Executive Director-Research Sales

San Francisco, CA, US

Website

williamoneil.com

Employees

AeroLeads page

Company profile

View company profile Email format

1 role

David Alonso work experience

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

Executive Director-Research Sales

William O'Neil + Co., Inc.

San Francisco, Ca, Us

Team & coworkers

Colleagues at William O'Neil + Co., Inc.

Other employees you can reach at williamoneil.com. View company contacts for 91 employees →

Chad Bair Colleague at William O'Neil + Co., Inc.Los Angeles, California, United States View → LG

Lewen Gong, Frm Colleague at William O'Neil + Co., Inc.Shanghai, China View → RR

Rajesh Reddy Colleague at William O'Neil + Co., Inc.Bengaluru, Karnataka, India View → PR

Peter Rothe Colleague at William O'Neil + Co., Inc.Boston, Massachusetts, United States View → JT

Jessica Tarin Colleague at William O'Neil + Co., Inc.Los Angeles Metropolitan Area, United States View → JH

Jack Hui Colleague at William O'Neil + Co., Inc.Hong Kong Sar, Hong Kong View → VP

Vishnu Pv Colleague at William O'Neil + Co., Inc.Kerala, India View → TD

Tristan D'Aboville Colleague at William O'Neil + Co., Inc.London, England, United Kingdom View → NV

Neel Vaghasiya Colleague at William O'Neil + Co., Inc.Bengaluru, Karnataka, India View → KJ

Kelly Johnston Colleague at William O'Neil + Co., Inc.Santa Ana, California, United States View →

FAQ

Frequently asked questions about David Alonso

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

What company does David Alonso work for?

David Alonso works for William O'Neil + Co., Inc..

What is David Alonso's role at William O'Neil + Co., Inc.?

David Alonso is listed as Executive Director-Research Sales at William O'Neil + Co., Inc..

What is David Alonso's email address?

AeroLeads has found 1 work email signal at @williamblair.com for David Alonso at William O'Neil + Co., Inc..

What is David Alonso's phone number?

AeroLeads has found 1 phone signal(s) with area code 312 for David Alonso at William O'Neil + Co., Inc..

Where is David Alonso based?

David Alonso is based in San Francisco, California, United States while working with William O'Neil + Co., Inc..

What companies has David Alonso worked for?

David Alonso has worked for William O'Neil + Co., Inc..

Who are David Alonso's colleagues at William O'Neil + Co., Inc.?

David Alonso's colleagues at William O'Neil + Co., Inc. include Chad Bair, Lewen Gong, Frm, Rajesh Reddy, Peter Rothe, and Jessica Tarin.

How can I contact David Alonso?

You can use AeroLeads to view verified contact signals for David Alonso at William O'Neil + Co., Inc., including work email, phone, and LinkedIn data when available.

What skills is David Alonso known for?

David Alonso is listed with skills including Equities, Financial Modeling, Hedge Funds, Equity Research, Alternative Investments, Bloomberg, Series 7, and Institutional Sales.

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