Tether Expands Its Stake in Bitcoin Mining Firm Bitdeer With Holdings of 21.4% Shares

Bitcoin (BTC) has been experiencing a downturn, with its price falling below $83,000 at the time of writing. However, institutional investors and major entities like Tether continue to express confidence in the cryptocurrency, strengthening their portfolios despite market fluctuations.

Tether Boosts Bitdeer Stake

As the entity behind the USDT stablecoin, Tether has been diversifying its investments into Bitcoin mining, artificial intelligence, and energy-related ventures. According to a recent U.S. Securities and Exchange Commission (SEC) filing, Tether has expanded its investment in Bitcoin mining by increasing its stake in Bitdeer (BTDR).

Notably, the stablecoin issuer and its subsidiaries now hold 31,891,689 Class A common shares of Bitdeer, representing 21.4% of the company’s outstanding shares. The investment aligns with Bitdeer’s goal of building a vertically integrated mining ecosystem where operations span from chip design to energy solutions.

Bitdeer’s Mining Advancements

Bitdeer recently introduced the SEALMINER A3, a mining chip that demonstrated a power efficiency of 9.7 J/TH in trials, potentially exceeding the performance of the S21XP Hydro. The company is also developing the SEALMINER A4, which is expected to offer a groundbreaking efficiency of 5 J/TH, positioning it as the most efficient ASIC miner in the industry.

Tether has contributed to Bitdeer’s expansion, investing $100 million in May to support the firm’s data center growth and hardware development. Additionally, Bitdeer acquired semiconductor design company Desiwe in June for $140 million through an all-stock transaction.

Institutional Bitcoin Accumulation

Beyond Tether, other companies are also increasing their Bitcoin holdings. Strategy (formerly MicroStrategy) disclosed in a recent SEC Form 8-K filing that it acquired 130 BTC between March 10 and 16, 2025, for approximately $10.7 million. This addition raises the firm’s total Bitcoin holdings to 499,226 BTC, acquired for $33.1 billion at an average price of $66,360 per coin.

Similarly, Metaplanet, a publicly traded Japanese company, has expanded its Bitcoin portfolio. The firm announced it invested $12.54 million (1.879 billion yen) to purchase 150 BTC, with an average acquisition price of $83,583 (12,526,226 yen) per Bitcoin. Following this move, Metaplanet’s total Bitcoin reserves have reached 3,200 BTC.