Neptune (NDA.V) — BTC Stacking Curve
Cumulative holdings, every disclosed buy, share price, and the best-fit saturation curve.
Neptune holds 420 BTC across 7 disclosed purchases. Average cost basis $54,221 per BTC. Last 30 days: 0 BTC. Last 90 days: 10 BTC — 0.78/week. Best fit: Richards (R² 0.94). Curve flattens toward 457.67 BTC, steepest accumulation Jun 2024.
Transaction history
All BTC transactions, most recent first.
| Date | BTC | Spot | USD Cost | Cumulative |
|---|---|---|---|---|
| Apr 20, 2026 | 10 | $67.0K | $670.0K | 420 |
| Oct 8, 2025 | 6 | $121.1K | $726.7K | 410 |
| May 26, 2025 | 28 | $108.9K | $3.0M | 404 |
| Feb 5, 2025 | 26 | $98.0K | $2.5M | 376 |
| Nov 25, 2024 | 5 | $97.9K | $489.3K | 350 |
| May 31, 2024 | 24 | $68.4K | $1.6M | 345 |
| Dec 27, 2023 | 321 | $42.5K | $13.6M | 321 |
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.