# Five Public Miners’ Bitcoin Output Falls 47% Through Oct. 19, 2026

By John Kim

Canonical URL: https://www.tokenpost.com/news/business/45710
Published: 2026-11-01T05:31:01.000Z
Updated: 2026-11-01T05:31:01.000Z
Section: Business

> A separate five-company group raised production 16%, but the 10 firms combined mined 8.9% less Bitcoin than in the comparable 2025 period.

Five publicly traded miners produced 47% less Bitcoin (BTC) through Oct. 19, 2026, than in the same 2025 period, while another five-company group posted a gain.

The lower-output cohort — IREN, Core Scientific, Bitfarms, TeraWulf and Cipher — mined 7,075 BTC from Jan. 1 through Oct. 19, 2026. Its total was 13,263 BTC over the corresponding dates in 2025, a difference of 6,188 BTC. Several companies in this group have shifted sites or capacity toward artificial intelligence and high-performance computing (HPC).

A separate Bitcoin-focused group — MARA, CleanSpark, Riot, HIVE and American Bitcoin — moved in the other direction. It produced 23,306 BTC in the 2026 period, compared with 20,085 BTC through Oct. 19, 2025, an increase of 16%.

Across both groups, production totaled 30,381 BTC through Oct. 19, 2026, versus 33,348 BTC over the same span in 2025, a decline of 8.9%. The 6,188-BTC drop in the first cohort was partly offset by a 3,221-BTC increase in the second, leaving combined output 2,967 BTC lower. These figures cover the 10 named companies; they do not measure Bitcoin network-wide production or miner profitability.

Bitdeer Technologies Group’s monthly figures show a separate comparison. Bitdeer Technologies Group mined 1,355 BTC in September 2026, compared with 452 BTC in September 2025. That was an increase of about 200% year over year. The September total includes both self-mining and co-mining, which uses Bitdeer rigs operated by third-party data centers.

At Sept. 30, Bitdeer’s self-mining hashrate was 82.3 exahashes per second, while its co-mining hashrate was 28.7 EH/s. Bitdeer’s figures cover September alone, while the other totals run from Jan. 1 through Oct. 19, so they use different measurement windows.