Current BoxTrades.com Rates
This page has nothing to do with leveraged ETF strategies. It is just useful info.
A short SPX box spread lets you borrow cash through options: receive cash today, repay a fixed amount at expiration. This page shows Boxtrades.com rates for SPX boxes expiring in more than 1 year, converted to APY.
The Finance Buff explains the margin-loan comparison, Fidelity mechanics, and risks.
Smaller trades may fill at worse rates. Size-adjusted estimates use recent SPX trades; current penalty is +0.0 bps for each 10x smaller total trade size, using 4,524 observations. $50K and $200K mean cash received today, and include estimated Fidelity four-leg SPX cost of $4.60.
| SPX expiry | Loan length | APY | Est. APY @ $50K | Est. APY @ $200K | Days to expiry | Boxtrades yield |
|---|---|---|---|---|---|---|
| 2027-06-17 | 1.0y | 4.44% | 4.45% | 4.44% | 381d | 4.44% |
| 2027-12-17 | 1.5y | 4.40% | 4.41% | 4.41% | 563d | 4.46% |
| 2028-12-15 | 2.5y | 4.50% | 4.50% | 4.50% | 927d | 4.66% |
| 2029-12-21 | 3.6y | 4.49% | 4.50% | 4.49% | 1298d | 4.76% |
| 2030-12-20 | 4.6y | 4.56% | 4.56% | 4.56% | 1662d | 4.94% |
| 2031-12-19 | 5.6y | 4.63% | 4.63% | 4.63% | 2026d | 5.14% |
Boxtrades data as of Jun 3, 2026.