SPTS Butterfly Strategy
SPTS (State Street SPDR Portfolio Short Term Treasury ETF), in the Financial Services sector, (Asset Management - Leveraged industry), listed on AMEX.
The State Street SPDR Portfolio Short Term Treasury ETF seeks to provide investment results that, before fees and expenses, correspond generally to the price and yield performance of the Bloomberg 1-3 Year U.S. Treasury Index (the "Index")A low cost ETF that seeks to offer precise, comprehensive exposure to U.S. Treasuries that have a remaining maturity between 1 and 3 yearsMay be less sensitive to interest rate fluctuations than vehicles with longer duration, and is market cap weighted and reconstituted on the last business day of the month One of the low cost core State Street SPDR Portfolio ETFs, a suite of portfolio building blocks designed to provide broad, diversified exposure to core asset classes
SPTS (State Street SPDR Portfolio Short Term Treasury ETF) trades in the Financial Services sector, specifically Asset Management - Leveraged, with a market capitalization of approximately $5.98B, a beta of 0.24 versus the broader market, a 52-week range of 29-29.4, average daily share volume of 1.7M, a public-listing history dating back to 2011. These structural characteristics shape how SPTS etf options price implied volatility around earnings windows, capital events, and macro-driven sector rotations.
A beta of 0.24 indicates SPTS has historically moved less than the broader market, dampening realized volatility and producing tighter expected-move bands per unit of dollar exposure. SPTS pays a dividend, which adjusts put-call parity and shifts the ex-dividend pricing across the listed chain.
What is a butterfly on SPTS?
A long call butterfly buys one lower-strike call, sells two ATM calls, and buys one higher-strike call, paying a small net debit for a defined-risk position that maxes out if the underlying pins the middle strike at expiration.
Current SPTS snapshot
As of May 15, 2026, spot at $28.99, ATM IV 123.30%, IV rank 100.00%, expected move 0.82%. The butterfly on SPTS below is built from the same end-of-day chain, with strikes snapped to listed contracts and premiums pulled from the bid/ask midpoint at a 34-day expiry.
Why this butterfly structure on SPTS specifically: SPTS IV at 123.30% is rich versus its 1-year range, which makes a premium-buying SPTS butterfly relatively expensive in absolute-cost terms, with a market-implied 1-standard-deviation move of approximately 0.82% (roughly $0.24 on the underlying). The 34-day window matched to the front-month expiry keeps theta exposure bounded while still capturing the post-snapshot move; longer-dated SPTS expiries trade a higher absolute premium for lower per-day decay. Position sizing on SPTS should anchor to the underlying notional of $28.99 per share and to the trader's directional view on SPTS etf.
SPTS butterfly setup
The SPTS butterfly below is built from the end-of-day chain, with each option leg priced at the bid/ask midpoint of its listed strike. With SPTS near $28.99, the first option leg uses a $27.54 strike; additional legs (when the strategy has them) anchor to spot-relative offsets. Premiums come from the bid/ask midpoint on the listed SPTS chain at a 34-day expiry; the cross-strike IV skew is reflected directly in the per-leg values rather than approximated. Quantity sizing assumes one contract per option leg (or 100 SPTS shares for the stock leg in covered calls and collars).
| Action | Type | Strike / Basis | Premium (est) |
|---|---|---|---|
| Buy 1 | Call | $27.54 | N/A |
| Sell 2 | Call | $28.99 | N/A |
| Buy 1 | Call | $30.44 | N/A |
SPTS butterfly risk and reward
- Net Premium / Debit
- N/A
- Max Profit (per contract)
- Unbounded
- Max Loss (per contract)
- Unbounded
- Breakeven(s)
- None on modeled curve
- Risk / Reward Ratio
- N/A
Max profit equals the wing width minus net debit times 100 (reached when the underlying pins the middle strike); max loss equals the net debit times 100. Two breakevens at lower-wing plus debit and upper-wing minus debit.
SPTS butterfly payoff curve
Modeled P&L at expiration across a range of underlying prices for the butterfly on SPTS. Each row is one sampled price point from the computed payoff curve; the full curve uses 200 price points internally before being summarized into 10 rows here.
When traders use butterfly on SPTS
Butterflies on SPTS are pinning bets - traders use them when they expect SPTS to settle near a specific level at expiration (often the prior close, a round number, or the max-pain strike) and want defined-risk exposure to that outcome.
SPTS thesis for this butterfly
The market-implied 1-standard-deviation range for SPTS extends from approximately $28.75 on the downside to $29.23 on the upside. A SPTS long call butterfly is a pinning play: it pays maximum at the middle strike if SPTS settles there at expiration, with the wing legs capping both the cost and the maximum loss to the net debit. Current SPTS IV rank near 100.00% sits in the upper third of its 1-year distribution, which historically reverts; this raises the bar for premium-buying structures and lowers it for premium-selling structures on SPTS at 123.30%. As a Financial Services name, SPTS options can move on sector-level news flow (peer earnings, regulatory updates, industry-specific macro data) in addition to SPTS-specific events.
SPTS butterfly positions are structurally neutral / pin (limited-risk, limited-reward); the modeled P&L assumes European-style exercise at expiration and ignores early assignment, transaction costs, dividends paid before expiry on the stock leg (when present), and the bid-ask spread on the listed chain. SPTS positions also carry Financial Services sector concentration risk; news flow inside the sector (peer earnings, regulatory shifts, supply-chain headlines) can move SPTS alongside the broader basket even when SPTS-specific fundamentals are unchanged. Always rebuild the position from current SPTS chain quotes before placing a trade.
Frequently asked questions
- What is a butterfly on SPTS?
- A butterfly on SPTS is the butterfly strategy applied to SPTS (etf). The strategy is structurally neutral / pin (limited-risk, limited-reward): A long call butterfly buys one lower-strike call, sells two ATM calls, and buys one higher-strike call, paying a small net debit for a defined-risk position that maxes out if the underlying pins the middle strike at expiration. With SPTS etf trading near $28.99, the strikes shown on this page are snapped to the nearest listed SPTS chain strike and the premiums come straight from the end-of-day bid/ask midpoint.
- How are SPTS butterfly max profit and max loss calculated?
- Max profit equals the wing width minus net debit times 100 (reached when the underlying pins the middle strike); max loss equals the net debit times 100. Two breakevens at lower-wing plus debit and upper-wing minus debit. For the SPTS butterfly priced from the end-of-day chain at a 30-day expiry (ATM IV 123.30%), the computed maximum profit is unbounded per contract and the computed maximum loss is unbounded per contract. Live intraday quotes will differ as the chain moves through the trading session.
- What is the breakeven for a SPTS butterfly?
- The breakeven for the SPTS butterfly priced on this page is no defined breakeven on the modeled curve at expiration, derived from end-of-day chain premiums. Breakeven is the underlying price at which the strategy's P&L crosses zero ignoring transaction costs and assignment risk. The current SPTS market-implied 1-standard-deviation expected move is approximately 0.82%; if the move sits well outside the breakeven distance, the structure's risk-reward becomes correspondingly tighter.
- When should you consider a butterfly on SPTS?
- Butterflies on SPTS are pinning bets - traders use them when they expect SPTS to settle near a specific level at expiration (often the prior close, a round number, or the max-pain strike) and want defined-risk exposure to that outcome.
- How does current SPTS implied volatility affect this butterfly?
- SPTS ATM IV is at 123.30% with IV rank near 100.00%, which is elevated relative to its 1-year range. Premium-selling structures (covered call, cash-secured put, iron condor) generally look more attractive when IV rank is high; premium-buying structures (long call, long put, debit spreads) are more expensive in that regime.