Cumulative holdings, every disclosed buy, share price, and the best-fit saturation curve.
Gemini Space Station Inc holds 1,109 BTC across 2 disclosed purchases. Average cost basis $64,354 per BTC. Last 30 days: 0 BTC. Last 90 days: 0 BTC — 0/week. Best fit: Richards (R² 0.37). Curve flattens toward 18,740 BTC, steepest accumulation Oct 2027.
All BTC transactions, most recent first.
| Date | BTC | Spot | USD Cost | Cumulative |
|---|---|---|---|---|
| Jun 30, 2026 | −27 | $0 | $0 | 1,109 |
| Jun 30, 2026 | −269.91 | $0 | $0 | 1,136 |
| May 14, 2026 | 1,258 | $79.5K | $100.0M | 1,406 |
| Mar 31, 2026 | −60 | $0 | $0 | 148 |
| Dec 31, 2025 | −88 | $0 | $0 | 208 |
| Sep 30, 2025 | 296 | $0 | $0 | 296 |
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.