· four exchange APIs · rebuilt daily
What carry cost, day by day, and which venue was cheapest to hold.

Every day this site records what it cost to hold a perpetual on each venue, how far apart those costs were, and how much of the board was actually liquid. 44 days recorded so far.
| Date | BTC | Venue spread | Cheapest |
|---|---|---|---|
| 2026-10-10 | 82,596.90 | 0.0113pp | bybit |
| 2026-10-09 | 81,756.30 | 0.0077pp | mexc |
| 2026-10-08 | 83,339.10 | 0.0108pp | mexc |
| 2026-10-07 | 85,529.10 | 0.0103pp | mexc |
| 2026-10-06 | 85,866.30 | 0.0100pp | mexc |
| 2026-10-05 | 86,393.40 | 0.0071pp | bitget |
| 2026-10-04 | 84,806.20 | 0.0128pp | bybit |
| 2026-10-03 | 84,495.00 | 0.0129pp | bybit |
| 2026-10-02 | 84,816.10 | 0.0069pp | bitget |
| 2026-10-01 | 83,580.70 | 0.0091pp | bybit |
| 2026-09-30 | 83,506.90 | 0.0058pp | bybit |
| 2026-09-29 | 83,390.20 | 0.0058pp | mexc |
| 2026-09-28 | 84,448.70 | 0.0053pp | bitget |
| 2026-09-27 | 84,254.30 | 0.0073pp | bybit |
| 2026-09-26 | 84,015.90 | 0.0104pp | bybit |
| 2026-09-25 | 84,559.70 | 0.0090pp | okx |
| 2026-09-24 | 84,359.50 | 0.0062pp | mexc |
| 2026-09-22 | 86,342.10 | 0.0038pp | bitget |
| 2026-09-21 | 81,531.10 | 0.0043pp | mexc |
| 2026-09-20 | 81,223.10 | 0.0000pp | bybit |
| 2026-09-19 | 80,991.10 | 0.0080pp | bitget |
| 2026-09-18 | 76,362.70 | 0.0111pp | bybit |
| 2026-09-17 | 76,369.70 | 0.0030pp | bitget |
| 2026-09-16 | 75,747.10 | 0.0039pp | bybit |
| 2026-09-15 | 78,066.40 | 0.0031pp | bybit |
| 2026-09-14 | 77,602.30 | 0.0041pp | okx |
| 2026-09-13 | 77,233.80 | 0.0052pp | mexc |
| 2026-09-12 | 77,259.60 | 0.0035pp | okx |
| 2026-09-11 | 76,808.90 | 0.0040pp | mexc |
| 2026-09-10 | 77,954.80 | 0.0085pp | bybit |