| # | Company | Employees |
|---|---|---|
| 1 |
CPP Investments | Investissements RPCcppinvestments.com
Professional management organization investing in public and private equities, real estate, infrastructure, and fixed income to build financial security for Canadian retirees. |
2,417 |
| 2 |
Ontario Teachers'โ Pension Planotpp.com
Manage global investments across diverse sectors to secure retirement benefits for Ontario teachers while promoting sustainability and profitability. |
1,908 |
| 3 | 1,679 | |
| 4 |
Oxford Properties Groupoxfordproperties.com
Global real estate investor, developer, and manager across various property types including office, life science, industrial, retail, living, and hotels. |
1,627 |
| 5 |
Brookfield Renewablebrookfield.com
Global leader in renewable power with a diverse portfolio of hydropower, wind, solar, and storage assets, driving innovation for sustainable, low-carbon energy solutions |
1,220 |
| 6 | 808 | |
| 7 | 501 | |
| 8 | 372 | |
| 9 |
Fengate Asset Managementfengate.com
An investment firm specializing in real assets, including infrastructure, private equity, and real estate, with a focus on delivering excellent results for clients |
352 |
| 10 |
Northleaf Capital Partnersnorthleafcapital.com
Global private markets investment firm specializing in mid-market companies and assets with an established track record in private equity, credit, and infrastructure investments worldwide |
324 |
| 11 |
Peakhill Capitalpeakhillcapital.com
Commercial real estate asset manager investing in debt & equity for institutional investors Provides capital for various asset types & construction projects |
203 |
| 12 |
Georgiangeorgian.io
High-growth B2B software investor focusing on Applied AI, Conversational AI, Trust, and Product-Led Purpose, accelerating growth-stage companies in Toronto |
138 |
| 13 |
OMERS Private Equityomersprivateequity.com
Management of private equity assets focused on steady returns through investments in leading companies across North America and Europe. |
128 |
| 14 |
OMERS Infrastructureomersinfrastructure.com
Infrastructure investment advisory and management arm of a pension plan, managing a diversified portfolio in energy, digital services, transportation, and government-regulated services worldwide |
118 |
| 15 |
Wittington Investments, Limitedbit.ly
A Canadian holding company of Weston group, including retail giant Loblaw, offering food, drug, financial services, and real estate investments |
107 |
| 16 |
Slate Asset Managementslateam.com
Global alternative investment platform specializing in real assets, offering various real estate and infrastructure investment strategies to create long-term value for investors |
101 |
| 17 |
Aquilaaquilasw.com
Eternally invests in market leaders across enterprise software, vertical SaaS, and data, multiplying their organic and customer growth through operational support, a division of Constellation Software. |
99 |
| 18 |
Origin Merchant Partnersoriginmerchant.com
Independent investment bank providing corporate finance, M&A, and merchant banking services with expertise in various core industries Trusted for senior professional advice and dedicated service |
91 |
| 19 |
Beacon Softwarebeaconsoftware.com
The company acquires and enhances vertical software businesses to empower Main Street businesses with world-class solutions, focusing on long-term growth |
88 |
| 20 |
Portageportageinvest.com
A global investment platform focused on fintech and financial services, providing flexible capital and a global network of investors and partners |
77 |
| 21 |
Harlo Groupharlogrp.com
An organization that manages private equity investments in various market verticals, including real estate, entertainment, lending, and early-seed investments |
63 |
| 22 |
Wesley Clover Internationalwesleyclover.com
Global investment management firm funding and growing successful technology companies, with a portfolio of over 40 active investments in next-generation Cloud and SaaS applications worldwide |
46 |
| 23 |
Newlook Capitalnewlookcapital.com
A private equity firm managing specialized funds with a focus on companies in Canada and the US, particularly in industrial services and dental practices |
44 |
| 24 |
Kensington Capital Partners Limitedkcpl.ca
Canadian alternative asset manager with over $28 billion in assets, specializing in private equity, growth equity, venture capital, and other alternative strategies |
44 |
| 25 |
Lionhart Capital Limitedlionhart.net
Global advisory group managing diversified portfolios with a risk-averse approach, specializing in Private Equity/Venture Capital within Natural Resources across four international offices |
42 |
| 26 |
Harlo Entertainmentharloentertainment.com
Private equity firm in Toronto managing over $250M in assets, specializing in investments in hospitality, entertainment, lifestyle, and technology industries with focus on operational improvements and growth |
41 |
| 27 |
Sarona Asset Managementsaronafund.com
Private investment firm investing in small to mid-market companies and private equity funds in Global Growth Markets, focusing on ethical and sustainable practices |
32 |
| 28 |
Fiera Infrastructurefierainfrastructure.com
Fiera Infrastructure is a leading investor in various infrastructure sectors, leveraging global relationships and rigorous investment strategies for optimal asset management |
31 |
| 29 |
Montez Corporationmontezcorp.com
Integrated real estate investment advisor and fund manager, with $7 billion assets under management, focusing on Canada-wide development in various asset classes |
30 |
| 30 |
Generation Capitalgenerationcapital.com
Private wealth and investment management firm in Toronto focusing on risk-adjusted returns, long-term value for clients, tax/estate planning, and social impact investing activities |
29 |
| 31 |
FAX Capitalfaxcapitalcorp.com
Investment holding company with permanent capital, focusing on long-term investing in public and private companies to create value and maximize compounding |
28 |
| 32 |
Instar Asset Managementinstarinvest.com
A private equity firm investing in North American middle-market infrastructure opportunities and alternative real assets to enrich communities, partners, and investors |
26 |
| 33 |
Metro 360metro360.ca
A diversified Canadian distribution company offering strategy, sales, service, manufacturing, and marketing for consumer products with national distribution infrastructure |
22 |
| 34 |
Clifton Blake Asset Management Ltd.cliftonblake.com
Alternative Asset Manager specializing in real estate investments, acquisitions, mortgage lending, and advisory services for public, private, and institutional clients with integrity and expertise |
22 |
| 35 |
Next Edge Capitalnextedgecapital.com
An experienced alternative investment fund manager offering unique solutions for investors, uncovering new opportunities for access to innovative investments |
21 |
| 36 |
Mind Lab 56ml56.com
A venture-creation studio specializing in developing autonomous agents and advanced machine-learning technologies to launch software startups and drive innovation |
21 |
| 37 |
OMERS Venturesomersventures.com
Early-stage tech investment firm specializing in fintech, horizontal and vertical software, and enterprise infrastructure with offices in major cities. |
19 |
| 38 |
Murchinsonmurchinsonltd.com
Investment firm specializing in global special situations, providing strategic financial solutions for unique investment opportunities |
18 |
| 39 |
Forgestone Capitalforgestonecapital.com
Real estate private equity and debt firm offering tailored solutions for superior risk-adjusted returns across various asset classes and geographies Passionate about making a difference in communities |
17 |
| 40 |
Banyan Capital Partnersยฎbanyancapitalpartners.cclgroup.com
A Canadian private equity firm investing in mid-sized companies across North America, providing liquidity and growth capital with decades of experience and integrity |
16 |
| 41 |
Accilent Capital Managementaccilentcapital.com
A boutique investment firm in Toronto specializing in alternative assets, commodities, and tax-advantaged investment products with discretionary asset management services |
15 |
| 42 |
Cranson Capitalcransoncapital.com
Boutique investment banking firm offering financial and advisory services to small to medium sized growth businesses, specializing in raising capital and finding financing solutions |
13 |
| 43 |
Portland Holdings Inc
A Canadian investment company managing public and private equity, with direct ownership in diversified businesses in media, tourism, and financial services |
12 |
| 44 |
Arch Corporationarchcorporation.com
A Canadian investment-management firm specializing in real estate investments for institutional and private family-office investors, providing innovative solutions |
12 |
| 45 |
Makin Investment Group LLPrmglobal.ca
A global investment management firm offering diversified strategies in Real Estate, Energy, Private Equity, and Infrastructure for institutional and private clients worldwide |
12 |
| 46 |
Corpfinance International Limitedcorpfinance.ca
A boutique investment bank offering alternative asset management, private debt origination, lease funding, and principal investments with over $4 billion raised |
11 |
| 47 |
Celtic House Asia Partnerscelticvc.com
Early-stage investment firm supporting consumer marketplaces and digital health startups in North America and China, providing strategic guidance and resources for growth |
11 |
| 48 |
Midland Group of Companies, Inc.
A private investment firm in midtown Toronto investing in various asset classes, including public equities and alternative strategies, both nationally and globally |
10 |
| 49 |
Tuckamore Capital Managementtuckamore.ca
Canadian private equity firm offering liquidity and growth capital to entrepreneurs while providing investors access to a diversified portfolio through public ownership |
7 |
| 50 |
FullG Capitalfullgcapital.com
Real estate investment firm with institutional mindset, investing in debt/equity across asset classes, leveraging $4B transaction experience to add value |
5 |
| 51 |
CORNERSTONE HOLDINGScornerstoneholdings.world
Global investment management firm focusing on Aerospace, Defence, Real Estate, and Telecommunication sectors, seeking diversified opportunities and prioritizing excellence and integrity |
4 |
| 52 |
Gulf Bridge Venture Partners (GBVP)
Facilitating connections between innovative startups and GCC investors to provide funding opportunities for global ventures Bridging the gap for collaboration |
3 |
| 53 |
G3 Capital Corp.g3cc.com
A Toronto-based alternative asset manager founded in 2008, operating in hedge fund, venture capital, and merchant banking sectors with a multi-strategy approach for absolute returns |
3 |
| 54 |
FinanceNorth Ltd.financenorth.ca
Investment firm managing various asset classes, offering services for public and private companies Focus on generating attractive investment returns globally |
3 |
| 55 |
Dark Horse Capitaldarkhorsecap.ca
Investment firm dedicated to partnering with exceptional businesses, preserving core values, promoting growth, and supporting the success of stakeholders |
2 |
Turn this list into pipeline
Tamtam finds the decision-makers at every company on a list like this one, with verified emails, phone numbers and the buying signals that tell you when to reach out.
How this list is built
Every company on this list has a Tamtam company profile. The industry is the one the company gives on LinkedIn; categories such as SaaS or fintech are classified by Tamtam's AI from the company's website and LinkedIn page; and the headquarters city must match the company's own address. Companies are ranked by the number of employees on LinkedIn, and the list is refreshed every night. Classifications can be wrong, so treat the list as a starting point rather than an official ranking. Last updated Oct 24, 2026.
More company lists in Ontario
- The largest companies in Ontario 4,330
- Financial services firms in Ontario 315
- Critical infrastructure operators in Ontario 262
- SaaS companies in Ontario 232
- Financial Services companies in Ontario 228
- Retail chains in Ontario 213
- Truck Transportation companies in Ontario 206
- Transportation, Logistics, Supply Chain and Storage companies in Ontario 196
- Public sector organisations in Ontario 196
- Hospitals and Health Care companies in Ontario 195
- Software Development companies in Ontario 188
- IT Services and IT Consulting companies in Ontario 179
- Manufacturers in Ontario 169
- Education providers in Ontario 148
- Logistics companies in Ontario 133
- Healthcare providers in Ontario 131
- Government Administration companies in Ontario 128
- Construction companies in Ontario 127
- Insurance companies in Ontario 123
- Contract manufacturers in Ontario 113
- Retail companies in Ontario 113
- Non-profit Organizations companies in Ontario 106
- Higher Education companies in Ontario 102
- Distributors and wholesalers in Ontario 100