Coinbase (COIN) — BTC Stacking Curve
Cumulative holdings, every disclosed buy, share price, and the best-fit saturation curve.
Coinbase holds 16,492 BTC across 9 disclosed purchases. Average cost basis $66,216 per BTC. Last 30 days: 0 BTC. Last 90 days: 1,103 BTC — 85.79/week. Best fit: Richards (R² 0.67). Curve flattens toward 86,031 BTC, steepest accumulation Jul 2034.
Transaction history
All BTC transactions, most recent first.
| Date | BTC | Spot | USD Cost | Cumulative |
|---|---|---|---|---|
| May 7, 2026 | 1,103 | $79.8K | $88.0M | 16,492 |
| Feb 13, 2026 | 841 | $70.1K | $59.0M | 15,389 |
| Oct 30, 2025 | 2,772 | $111.7K | $309.7M | 14,548 |
| Jul 31, 2025 | 2,509 | $117.8K | $295.6M | 11,776 |
| Mar 31, 2025 | 2,382 | $82.3K | $196.1M | 9,267 |
| Dec 31, 2024 | −2,478 | $92.8K | $230.0M | 6,885 |
| Sep 30, 2024 | 364 | $65.7K | $23.9M | 9,363 |
| Jun 30, 2024 | −184 | $61.0K | $11.2M | 8,999 |
| Mar 31, 2024 | −212 | $69.7K | $14.8M | 9,183 |
| Dec 31, 2023 | −85 | $42.2K | $3.6M | 9,395 |
| Dec 31, 2022 | 1,607 | $16.6K | $26.7M | 9,480 |
| Dec 31, 2021 | 3,385 | $47.2K | $159.7M | 7,873 |
| Apr 17, 2021 | 4,488 | $28.8K | $129.3M | 4,488 |
How to read this chart
Cumulative BTC held — the staircase. Each step is a disclosed purchase; the step height is the size of the buy.
Purchase bubbles — one per buy. Bubble size is the BTC count; vertical position is the per-BTC cost basis. Small-and-high is a small buy at a high price; big-and-low is a big buy made cheap.
Share price — the secondary line on the right axis. Did the company stack faster when its equity ran hot?
Regression fit — the best of a Richards and a Gompertz saturation curve, chosen by log-R². It has to flatten: there are only 21 million Bitcoin.
Controls — Linear/Log switches the BTC axis. Play animates the curve forward through disclosure time. ‹ › steps through the cohort by holdings.