Share this article

Stronghold Digital Mining Files for $100M IPO

The firm intends to list its Class A common stock on the Nasdaq Global Market under the ticker SDIG.

Updated Sep 14, 2021, 1:31 p.m. Published Jul 27, 2021, 2:38 p.m.
jwp-player-placeholder

Stronghold Digital Mining, the alternative energy-powered bitcoin miner, has registered for an initial public offering (IPO) with the U.S. Securities and Exchange Commission (SEC).

STORY CONTINUES BELOW
Don't miss another story.Subscribe to the Crypto Daybook Americas Newsletter today. See all newsletters

  • The Pennsylvania-based Stronghold filed its S-1 form Tuesday with the SEC, proposing a $100 million IPO.
  • The firm intends to list its Class A common stock on the Nasdaq Global Market under the ticker SDIG.
  • Stronghold converts waste coal, a material left over from coal mining, into power used to mine bitcoin. Pennsylvania regulators classify waste coal as an alternative energy source on par with hydropower for its environmental impact.
  • In its S-1, Stronghold said it currently operates approximately 1,800 crypto asset mining computers with hash rate capacity of roughly 85 petahash per second (PH/s). Since April 1 the company has entered into three definitive agreements with multiple suppliers to purchase over 27,300 additional miners with a total hash capacity equal to over 2,600 PH/s.
  • In June, Stronghold raised $105 million in a funding round with contributions from MG Capital and Greg Beard, a former senior partner at private equity firm Apollo Global Management. Beard is now listed as Stronghold's co-chairman and CEO.

Read more: Argo Blockchain Plans US Listing in Q3

UPDATE (July 21, 15:03 UTC): Updated with details about Stronghold's business in the fourth bullet point.

More For You

Protocol Research: GoPlus Security

GP Basic Image

What to know:

  • As of October 2025, GoPlus has generated $4.7M in total revenue across its product lines. The GoPlus App is the primary revenue driver, contributing $2.5M (approx. 53%), followed by the SafeToken Protocol at $1.7M.
  • GoPlus Intelligence's Token Security API averaged 717 million monthly calls year-to-date in 2025 , with a peak of nearly 1 billion calls in February 2025. Total blockchain-level requests, including transaction simulations, averaged an additional 350 million per month.
  • Since its January 2025 launch , the $GPS token has registered over $5B in total spot volume and $10B in derivatives volume in 2025. Monthly spot volume peaked in March 2025 at over $1.1B , while derivatives volume peaked the same month at over $4B.

More For You

ICP Rises, Keeping Price Above Key Support Levels

ICP-USD, Dec. 8 (CoinDesk)

Internet Computer rose, keeping the price above the $3.40 support zone, with early session volume spikes failing to produce a sustained breakout.

What to know:

  • ICP rose 0.6% to $3.44 as early session volume surged 31% above average before fading.
  • Resistance near $3.52–$3.55 rejected multiple breakout attempts, keeping the token range-bound.
  • Support between $3.36–$3.40 held firm, maintaining ICP’s short-term higher-low structure.