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 4,410 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 |
|---|---|---|---|---|---|---|
| 2027-10-15 | 1.0y | 5.09% | 5.10% | 5.09% | 374d | 5.09% |
| 2027-12-17 | 1.2y | 5.13% | 5.13% | 5.13% | 437d | 5.15% |
| 2028-12-15 | 2.2y | 5.32% | 5.33% | 5.33% | 801d | 5.49% |
| 2029-12-21 | 3.2y | 5.40% | 5.40% | 5.40% | 1172d | 5.73% |
| 2031-12-19 | 5.2y | 5.57% | 5.57% | 5.57% | 1900d | 6.26% |
Boxtrades data as of Oct 7, 2026.