---
schema_version: "secwatch.filing_event.v1"
accession: "0001193125-21-301639"
form_type: "8-K"
ticker: "GBTC"
cik: "0001588489"
company_name: "Grayscale Bitcoin Trust ETF"
filed_at: "2021-10-19T23:59:59+00:00"
generated_at: "2026-06-28T19:59:13.358256+00:00"
event_type: "regulatory"
sentiment: "positive"
materiality_score: 0.8
calibrated_materiality_score: 0.8
confidence: "high"
source: SEC EDGAR
---

# NYSE Arca files 19b-4 to convert Grayscale Bitcoin Trust (GBTC) into spot ETF

## Summary
- NYSE Arca filed Form 19b-4 with SEC to list and trade GBTC shares as a Bitcoin spot ETF under Rule 8.201-E.
- GBTC holds ~3.44% of all Bitcoin in circulation and has nearly $40B in AUM.
- Filing follows SEC clearance of Bitcoin Futures ETF; Grayscale argues spot ETF should also be permitted.
- Grayscale committed to converting all 14 of its other digital currency investment products into ETFs.
- If approved, GBTC would become the first Bitcoin spot ETF in the US.

## SEC filing metadata
- accession: 0001193125-21-301639
- form_type: 8-K
- ticker: GBTC
- cik: 0001588489
- company_name: Grayscale Bitcoin Trust ETF
- filed_at: 2021-10-19T23:59:59+00:00
- event_type: regulatory
- sentiment: positive
- materiality_score: 0.8
- calibrated_materiality_score: 0.8
- confidence: high
- sec_items: 7.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1588489/000119312521301639/0001193125-21-301639-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1588489/000119312521301639/d216598d8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001193125-21-301639
- JSON: https://secwatch.observer/filing/0001193125-21-301639.json
- Plain text: https://secwatch.observer/filing/0001193125-21-301639.txt

This AI-assisted summary is a reading aid. Review the linked SEC EDGAR filing before relying on any specific claim.