Box Spread Facility
What securities-backed lending would look like if a tax attorney designed it. A synthetic borrowing strategy executed through SPX options, with the borrowing cost structured as a capital loss for tax purposes.
At A Glance
Low
Borrowing Costs
Rates close to short-term treasury yields.
1256
Capital Losses
Borrowing costs structured as a capital loss under Section 1256.
OCC
Cleared
Settlement guaranteed by the Options Clearing Corporation, no bilateral counterparty risk.
Two
Structures
Fixed-term locked rates or variable-term rolling rates.
The Box Spread Facility offers high-net-worth investors and their advisors a sophisticated alternative to traditional securities-backed lending.
By executing a defined combination of S&P 500 Index (SPX) options on the CBOE, the strategy creates a synthetic loan that gives investors access to the liquidity locked in their portfolios without selling appreciated holdings or triggering taxable events. All positions are cleared through the Options Clearing Corporation, which eliminates the bilateral counterparty risk that comes with traditional lending and provides institutional-grade settlement guarantees.
What sets Box Spread apart is its tax treatment. Because SPX options are classified as Section 1256 contracts under the Internal Revenue Code, the borrowing cost is recognized as a capital loss rather than interest expense, and receives the favorable 60/40 long-term/short-term split. For investors with capital gains to offset, this treatment can meaningfully reduce the effective after-tax cost of borrowing compared to traditional alternatives, effectively turning a borrowing expense into a tax-reducing event.
The Facility is available in two structures. A variable-term rolling format reprices at prevailing short-term rates, designed for investors who want ongoing access to liquidity at floating rates. A fixed-term format locks in a known borrowing cost for the life of the position, designed for investors with defined borrowing timelines who want rate certainty. Quantor manages all execution, monitoring, and rolling within the client's existing custodial relationship, making it a seamless solution for any portfolio.
Box Spread positions are maintained in a portfolio margin account. If the value of the collateral securities declines, the investor may receive a margin call requiring additional capital or liquidation of positions. Tax treatment depends on individual circumstances and is not guaranteed. Investors should consult a qualified tax professional before implementing this strategy. Options trading involves significant risk and is not appropriate for all investors.
