RabbitSuitRabbitSuit
règles 2026-09-28

RabbitSuit Fund

Un fonds Bitcoin que nous gérons avec notre propre argent, publié à ciel ouvert. Nous le faisons pour notre propre discipline, et pour les curieux ; rien de tout cela n’est un conseil en investissement.

Le but : des rendements proches de la détention de Bitcoin, avec des chutes bien plus faibles en chemin. Nous le jugeons sur le Sharpe et le MAR, les scores ajustés du risque. Pourquoi Bitcoin →

Une règle fixe la répartition chaque jour : elle décide quelle part du fonds est en Bitcoin, de 0 % à 100 %. Quand le cadran affiche 0,65, 65 % du fonds est en Bitcoin. Le reste est parqué dans un seul autre actif.

Cet autre actif est choisi parmi liquidités (marché monétaire), actions mondiales, or, le Nasdaq-100 ou bons du Trésor américain longs, rechoisi à chaque fin de mois par une règle. En changer ne modifie jamais la part en Bitcoin.

Par-dessus, une petite position en options achète de la convexité quand notre stratégie juge que cela en vaut la peine. Elle ne peut perdre que ce qu’elle a payé et ne modifie jamais la part en Bitcoin.

backtest · simulé

Dans le backtest 2018–2026, la fenêtre principale : CAGR 88%, pire drawdown -29%, Sharpe 1.85, MAR 3.02. Simulé : aucun fonds n’existait alors. Le backtest → Inclut la position en options à partir du 3 juil. 2020, début de ses données de prix.

historique réel · transactions simulées

En réel depuis le 3 août 2026 (57 jours), le fonds modèle USD · spot : +19.8%, contre +30.8% pour la détention de Bitcoin. Trop court pour être annualisé. Les quatre fonds →

52% en Bitcoin

reste parqué en le Nasdaq-100

clôture quotidienne 2026-09-27

Les fonds modèles, en réel

historique réel · transactions simulées
détail complet →

Valeur depuis le lancement, avec un coût prélevé à chaque transaction simulée. La ligne pâle est la détention de Bitcoin. Les chiffres annualisés apparaissent quand un fonds a 90 jours.

Où regarder

Dernières entrées du journal

toutes les entrées →
parameter_change2026-09-28

One change to how the options position is funded. An options position that expires on the same day a new one would be bought still counts as money tied up when the fund checks whether the parked share can pay for the new one. Its proceeds are not used to pay for a purchase on the same day, because in the account the fund uses they are not reliably available that soon. The practical effect is that, when Bitcoin already takes up most of the fund, a new options purchase is skipped a little more often. In the historical record this skips three purchases in early 2023 and lowers the simulated return with options slightly; the figures without options do not change. The rule for when to buy, the sizes and the cap are as they were. It moves no position today and changes nothing the fund holds.

parameter_change2026-09-28

Reporting change; no rule changes. Two things. First, the fund now publishes two reference dials beside the one it follows: the dial as it would read under the rule in force before the last change, and the dial with only the four-year-average exception and no read-ahead. They are yardsticks: nothing is bought or sold on them. The read-ahead will be judged against the second one, the simpler rule it has to beat, and the yearly review reports both. Second, the wording. The read-ahead is a momentum adjustment on the fund's liquidity reading, chosen because it improved the historical record. The observation that Bitcoin tends to follow liquidity with a lag of a few months is what prompted it; the adjustment is not calculated from that lag, and earlier wording that suggested so has been corrected. Every rule, band, cap and figure the fund runs on is exactly as it was and nothing trades differently.

parameter_change2026-09-24

Two bounded changes to how the dial reads liquidity. First, when global liquidity has improved over the last three months, part of that improvement is read ahead. This is a momentum adjustment chosen from the historical record; the observation that Bitcoin tends to follow liquidity with a lag of a few months is what prompted it, not a formula it follows from. A deterioration is read as before, so the dial is never below what the old rule would say. Second, while Bitcoin's price closes below its four-year average, the liquidity haircut is not applied: at those levels the record shows the haircut costs the recovery more than it saves, and it comes back the day price closes above the average. Nothing else moves: the valuation and rotation factors, the executed dial's memory, the floor, the bands, the parking rule, the options position and every override are as they were. The rule was re-backtested over the full history before adoption and judged on return per unit of drawdown; it improves the record on every window and passes the after-tax check. It is not free of cost: in the past it would have held a material Bitcoin position through the November 2022 exchange collapse, which cost about twelve percent of the fund's value in a fortnight before the 2023 recovery more than repaid it. It makes no trade today: at the current close the new and old readings are the same number.

parameter_change2026-09-10

The fund now accounts for when Federal Reserve balance-sheet information becomes available. Historical simulations also use earlier information for the valuation reference and include ETF distributions consistently. Actual past decisions remain the fund's record. The allocation effect was checked against the production state; future rebalances follow the existing execution rules.