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AI brief of an SEC Form 8-K · Grayscale Bitcoin Trust ETF (GBTC)

Grayscale Bitcoin Trust ETF to switch NAV index to CoinDesk Benchmark Rate April 1

Neutral Impact 3 of 5 other Written later

On March 16, 2026, the sponsor of Grayscale Bitcoin Trust ETF announced that, effective April 1, 2026, the Trust will value its Bitcoin for operational purposes and calculate its net asset value and NAV per Share using the CoinDesk Bitcoin Benchmark Rate instead of the CoinDesk Bitcoin Price Index (XBX). The change alters the reference price used for the Trust's NAV, which shareholders should note, and the filing states that the Index Provider can change the methodology without shareholder consent.

Key points

  • Effective April 1, 2026, NAV and NAV per Share switch from the CoinDesk Bitcoin Price Index (XBX) to the CoinDesk Bitcoin Benchmark Rate.
  • The Index Provider may change the methodology without notice to or consent of the Trust or its shareholders; material changes will be disclosed in current reports.

The filing

CompanyGrayscale Bitcoin Trust ETF (GBTC)
Form8-K, current report
Filed with the SECMar 16, 2026, 4:19 PM ET
Accession number0001193125-26-108382

Items reported: 8.01 Other Events

Read the filing on SEC.gov ↗

Written by AI on Nov 9, 2026, 8:38 AM ET, from this filing only. Written later: this filing was briefed after the fact, when past filings were added to the site, so the brief may be read with hindsight; the filing itself is the record of what was known on March 16, 2026.

Briefs are written by AI from the filing text and can contain mistakes — open the filing before acting on anything. Impact (1-5) and tone are the AI's reading of the filing for shareholders, not a price forecast. Not investment advice.