ALTO SECURITIES

MainGrid Shield, LLC

Closed

Explore opportunities in the digital currency infrastructure space through a platform designed to support access to institutional-scale mining projects with potential for monthly cash distributions.

MainGrid Shield, LLC offers accredited investors access to institutional-scale bitcoin mining operations and U.S.-based data centers powered by reliable, low-cost energy. It is designed to generate monthly cash flow and provide diversified exposure to the digital mining economy.

Offering Details

Offering Name:
MainGrid Shield, LLC
Minimum Investment Size:
$50,000
Type of Offering:
Reg D 506(c)
Investor Type:
Accredited Investors
Launch Date:
July 2, 2025
Fees:
2% annual management fee on assets (excluding uncalled capital commitments); 20% performance allocation (carried interest) to the Managing Member, with 80% of profits allocated to investors; 2% administrative fee (one-time)
Anticipated Final Close:
December 31, 2025
Asset Class:
Real Estate / Infrastructure

Upcoming Webinar

Join leaders from Alto Securities and MainGrid Infrastructure to hear them discuss a unique investment opportunity on Alto Marketplace.

Jul 22, 2025 at 3:00 PM EST

Additional offering details

Target Fund Size: US $150M
Fund Term: Targeted return of capital no later than 60 months, subject to market and operational factors
Capital Call Structure: Capital commitments are drawn over approximately three months. All capital will be called upfront.
Distributions: Monthly via ACH

About Maingrid Infrastructure

MainGrid Infrastructure (formerly Chicago Atlantic Digital Mining Fund, LLC) was founded in February 2023 and is an affiliate of Chicago Atlantic, an SEC-registered, credit-focused alternative investment manager with over $1.6 billion in capital under management and more than $2.3 billion in closed loans since 2019.

Investment opportunity

MainGrid Shield, LLC, (“the Fund”) invests in modular, U.S.-based bitcoin mining data centers co-located near substations with scalable power infrastructure. Mined bitcoin is sold each month, with proceeds distributed monthly to cover operating expenses and investor returns. The main fund aims to retain approximately 30% of its assets in mined bitcoin.

The Fund currently operates three Midwest sites with expansion capacity:

Midwest Site #1 – 4 Modular Data Centers

• Capacity: 4 MW
• Status: Operating since February 2023
• Expansion: Up to an additional 100 MW

Midwest Site #2 – 7 Modular Data Centers

• Capacity: 13.3 MW
• Status: Operating since August 2023
• Expansion: Up to an additional 140 MW

Midwest Site #3 – 2 Modular Data Centers

• Capacity: 4 MW
• Status: Operating since April 2024
• Expansion: Up to an additional 38 MW

Project Pipeline

Midwest Site #4

• Capacity: 100 MW

Midwest Site #5

• Capacity: 100 MW

Proceeds from investments allocated to operational expenses may be used to expand existing sites, acquire new infrastructure, purchase upgraded mining equipment, or opportunistically acquire distressed assets.

MainGrid’s Mining & Distribution Process

Mining economics are influenced by several external factors, including network hashprice, block rewards (post-2024 halving: 3.125 BTC), and difficulty adjustments. The Fund seeks to manage profitability through careful site selection, power rate negotiation, equipment acquisition, and operational controls.

Why invest now?

About the Investment Team

MainGrid Shield, LLC, is supported by a team of over 40 investment and operations professionals and leverages institutional fund accounting and client services.

Team leadership includes:

Ryan Muranaka, Partner & Head of Digital Mining

20+ years in commercial/industrial real estate; $2B+ in direct originations and developments

Andreas Bodmeier, Ph.D., Partner

Co-founder of Chicago Atlantic; finance Ph.D. with deep expertise in risk management, capital strategy, and investor relations

Matt Brady, VP, Digital Mining

20+ years in CRE lending and underwriting

Daniel Walsh, CAIA, Director, Capital Formation

10+ years of fundraising and relationship management experience working with institutions, RIAs, private banks, and family offices

Jack O'Connor, VP, Capital Formation

6+ years of fundraising and investor relations experience working with RIAs, family offices, and institutional investors

Watch our webinar

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Offering Documents

Please log in or sign up to view additional Investment Documents for this offering. Additionally, you can email investorrelations@altoira.com to schedule an appointment for more information.

1 Distribution payments are not guaranteed, and may be paid from sources other than cash flow from operations, including the return of capital.

ALTO SECURITIES

MainGrid Shield, LLC

$50,000

Minimum investment
Closed

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