BIL Cash-Secured Put: Strike Selection, Premium & Risk
How to sell cash-secured puts on SPDR Bloomberg 1-3 Month T-Bill ETF — optimal strikes, expected premium, and the risks that actually matter for a large-cap etf name.
Is BIL a good cash-secured put candidate?
BIL (SPDR Bloomberg 1-3 Month T-Bill ETF) is one of the most heavily traded ETFs for options strategies. Tight spreads and good open interest across strikes make it ideal for premium sellers. Because BIL is a basket rather than a single name, single-stock earnings risk is diffused, which is a meaningful edge for consistent income.
Strike selection for a BIL cash-secured put
For BIL cash-secured puts, target strikes 5-7% below the current price at deltas of 0.25-0.35. Use 30-45 DTE (theta decays slow, so longer dated). The rule is simple: only sell a put at a strike where you would genuinely be happy owning 100 shares, because on a low-volatility ticker you will occasionally get assigned.
Expected premium and income on BIL
Typical monthly premium collected on BIL runs around 0.5-1.0% of capital, which annualizes to roughly 6-12% if you sell new contracts every cycle. Capital required to run a single contract wheel on BIL is under $5,000 — the share price and the 100-share lot size set the minimum, not the strategy.
Risk management for BIL cash-secured put trades
The core risk on a cash-secured put is assignment into a falling stock: your break-even is the strike minus the premium, so a sharp drop below that level leaves you with unrealized losses on the assigned shares. BIL is a low-volatility name — the main risk is not sudden moves but slow grinds against you, which hurt covered-call writers who picked strikes too close to the money. ETFs diffuse single-stock risk but still carry basket-level exposure — a sector ETF will move on macro shocks even if individual holdings are fine.
BIL Cash-Secured Put FAQ
What is the best delta for a BIL cash-secured put?
A delta of 0.25-0.35 on BIL balances premium income with assignment probability. Many traders anchor to 0.20 delta as a starting point and adjust based on their willingness to own shares.
How much cash do I need to sell a put on BIL?
Cash required is 100 × strike price. For BIL, that's roughly under $5,000 per contract at a typical strike. Most brokers let you use margin, but for a true cash-secured put you set aside the full amount.
What expiration should I use for BIL cash-secured put trades?
Use 30-45 DTE as a default for BIL. This is the classic theta sweet spot and works well on a stable ticker like this.
Is BIL suitable for beginners selling options?
Yes — it's a well-known, liquid name with established options markets, which is what beginners need. Always check the bid/ask spread before entering — anything wider than 5% of the mid price is a warning sign.
Related BIL strategies
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