Treasury Market (Long Basis Trade) (N/A)
Published 2026-03-17 • by onlysofrs
Thesis Summary
Exploit the discrepancy between cash Treasury prices and Treasury futures by going long the 'Cheapest to Deliver' (CTD) bond and shorting the futures contract, capturing the basis spread while managing repo funding and leverage risks.
Quantitative Overlay
Detailed Deep Dive
Hedge funds put on the Long Basis trade:
* Long: Cash Treasury (CTD).
* Short: Treasury Future.
* Financing: Repo the Cash Treasury.
The Math:
You buy the bond. You short the future. You lock in the spread. If held to delivery, the prices must converge. It looks like “risk-free” profit.
* _Profit:_ (Basis at entry) - (Carry cost over holding period).
* _Leverage:_ Since the spread is tiny (e.g., 5/32nds), you lever it 50x.
The Risk (2025 Edition):
The risk is Funding Liquidity.
* You own $50 billion of Treasuries. You need to roll the repo every night.
* Suddenly, Repo rates spike (Part 1). Your “carry cost” explodes.
* Simultaneously, Treasuries RALLY. You lose money on the Futures Short. You get a margin call from the exchange (CME). You need cash _today_. You try to repo your bonds to get cash. But the repo market is tight. Haircuts increase.
* You are forced to sell the Cash Treasuries to meet the Futures margin call. Selling drives Cash prices down. Futures prices stay sticky. The Basis WIDENS against you. You blow up.