SMLV · State Street SPDR Bloomberg 1-3 Month T-Bill ETF

Track SMLV — free

$159.10 -0.36 (-0.23%) At close · Aug 28

Rebalance outlook locked

Options Chain

Underlying $159.10 · at close Aug 28, 2026 Options Calculator

Positioning

Sep 18, 2026 · 20 days to expiry · 30 contracts · snapshot sessions unknown

Put / call OI

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snapshot sessions unknown

Open interest

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snapshot sessions unknown

Volume

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snapshot sessions unknown

Chain

Click any strike for greeks, breakeven and the calculator

Expiry

Sep 18 20d Oct 16 48d Jan 15 139d Apr 16 230d

Calls						Puts
OI	Vol	IV	Δ	Last	Strike	Last	Δ	IV	Vol	OI
0	—	16.3%	0.888	—		—	-0.283	36.7%	—	0
Call · $152 In the money Snapshot session Unknown Last — Breakeven — Implied vol 16.3% Delta 0.888 ≈89% ITM Gamma 0.031 Theta -0.033 Vega 0.064 Open interest 0 Model this call Put · $152 Snapshot session Unknown Last — Breakeven — Implied vol 36.7% Delta -0.283 ≈28% ITM Gamma 0.025 Theta -0.113 Vega 0.127 Open interest 0 Model this put
0	—	15.3%	0.869	—		—	-0.221	22.8%	—	0
Call · $153 In the money Snapshot session Unknown Last — Breakeven — Implied vol 15.3% Delta 0.869 ≈87% ITM Gamma 0.037 Theta -0.035 Vega 0.096 Open interest 0 Model this call Put · $153 Snapshot session Unknown Last — Breakeven — Implied vol 22.8% Delta -0.221 ≈22% ITM Gamma 0.035 Theta -0.062 Vega 0.127 Open interest 0 Model this put
0	—	14.5%	0.837	—		—	-0.253	21.8%	—	0
Call · $154 In the money Snapshot session Unknown Last — Breakeven — Implied vol 14.5% Delta 0.837 ≈84% ITM Gamma 0.045 Theta -0.037 Vega 0.096 Open interest 0 Model this call Put · $154 Snapshot session Unknown Last — Breakeven — Implied vol 21.8% Delta -0.253 ≈25% ITM Gamma 0.039 Theta -0.063 Vega 0.128 Open interest 0 Model this put
0	—	14.1%	0.793	—		—	-0.337	29.6%	—	0
Call · $155 In the money Snapshot session Unknown Last — Breakeven — Implied vol 14.1% Delta 0.793 ≈79% ITM Gamma 0.054 Theta -0.042 Vega 0.097 Open interest 0 Model this call Put · $155 Snapshot session Unknown Last — Breakeven — Implied vol 29.6% Delta -0.337 ≈34% ITM Gamma 0.033 Theta -0.099 Vega 0.131 Open interest 0 Model this put
0	—	13.2%	0.746	—		—	-0.296	16.5%	—	0
Call · $156 In the money Snapshot session Unknown Last — Breakeven — Implied vol 13.2% Delta 0.746 ≈75% ITM Gamma 0.064 Theta -0.043 Vega 0.128 Open interest 0 Model this call Put · $156 Snapshot session Unknown Last — Breakeven — Implied vol 16.5% Delta -0.296 ≈30% ITM Gamma 0.056 Theta -0.051 Vega 0.129 Open interest 0 Model this put
0	—	12.9%	0.681	—		—	-0.349	16%	—	0
Call · $157 In the money Snapshot session Unknown Last — Breakeven — Implied vol 12.9% Delta 0.681 ≈68% ITM Gamma 0.074 Theta -0.047 Vega 0.129 Open interest 0 Model this call Put · $157 Snapshot session Unknown Last — Breakeven — Implied vol 16% Delta -0.349 ≈35% ITM Gamma 0.062 Theta -0.053 Vega 0.148 Open interest 0 Model this put
0	—	12%	0.611	—		—	-0.396	12.8%	—	0
Call · $158 In the money Snapshot session Unknown Last — Breakeven — Implied vol 12% Delta 0.611 ≈61% ITM Gamma 0.085 Theta -0.046 Vega 0.148 Open interest 0 Model this call Put · $158 Snapshot session Unknown Last — Breakeven — Implied vol 12.8% Delta -0.396 ≈40% ITM Gamma 0.08 Theta -0.043 Vega 0.148 Open interest 0 Model this put
0	—	11.9%	0.525	—		—	-0.476	11%	—	0
Call · $159 In the money Snapshot session Unknown Last — Breakeven — Implied vol 11.9% Delta 0.525 ≈52% ITM Gamma 0.09 Theta -0.047 Vega 0.15 Open interest 0 Model this call Put · $159 Snapshot session Unknown Last — Breakeven — Implied vol 11% Delta -0.476 ≈48% ITM Gamma 0.099 Theta -0.038 Vega 0.15 Open interest 0 Model this put
Underlying $159.10
0	—	13%	0.443	—		—	-0.573	11%	—	0
Call · $160 Snapshot session Unknown Last — Breakeven — Implied vol 13% Delta 0.443 ≈44% ITM Gamma 0.081 Theta -0.05 Vega 0.151 Open interest 0 Model this call Put · $160 In the money Snapshot session Unknown Last — Breakeven — Implied vol 11% Delta -0.573 ≈57% ITM Gamma 0.097 Theta -0.036 Vega 0.151 Open interest 0 Model this put
0	—	13%	0.364	—		—	-0.671	10.6%	—	0
Call · $161 Snapshot session Unknown Last — Breakeven — Implied vol 13% Delta 0.364 ≈36% ITM Gamma 0.078 Theta -0.048 Vega 0.133 Open interest 0 Model this call Put · $161 In the money Snapshot session Unknown Last — Breakeven — Implied vol 10.6% Delta -0.671 ≈67% ITM Gamma 0.093 Theta -0.032 Vega 0.133 Open interest 0 Model this put
0	—	24.7%	0.395	—		—	-0.771	10.1%	—	0
Call · $162 Snapshot session Unknown Last — Breakeven — Implied vol 24.7% Delta 0.395 ≈39% ITM Gamma 0.042 Theta -0.09 Vega 0.152 Open interest 0 Model this call Put · $162 In the money Snapshot session Unknown Last — Breakeven — Implied vol 10.1% Delta -0.771 ≈77% ITM Gamma 0.085 Theta -0.025 Vega 0.102 Open interest 0 Model this put
0	—	18.5%	0.305	—		—	-0.85	9.9%	—	0
Call · $163 Snapshot session Unknown Last — Breakeven — Implied vol 18.5% Delta 0.305 ≈30% ITM Gamma 0.05 Theta -0.061 Vega 0.134 Open interest 0 Model this call Put · $163 In the money Snapshot session Unknown Last — Breakeven — Implied vol 9.9% Delta -0.85 ≈85% ITM Gamma 0.069 Theta -0.018 Vega 0.097 Open interest 0 Model this put
0	—	18.4%	0.255	—		—	-0.925	9.3%	—	0
Call · $164 Snapshot session Unknown Last — Breakeven — Implied vol 18.4% Delta 0.255 ≈25% ITM Gamma 0.047 Theta -0.056 Vega 0.135 Open interest 0 Model this call Put · $164 In the money Snapshot session Unknown Last — Breakeven — Implied vol 9.3% Delta -0.925 ≈92% ITM Gamma 0.051 Theta -0.009 Vega 0.06 Open interest 0 Model this put
0	—	22.6%	0.261	—		—	—	—	—	0
Call · $165 Snapshot session Unknown Last — Breakeven — Implied vol 22.6% Delta 0.261 ≈26% ITM Gamma 0.038 Theta -0.069 Vega 0.135 Open interest 0 Model this call Put · $165 In the money Snapshot session Unknown Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put
0	—	20.9%	0.209	—		—	—	—	—	0
Call · $166 Snapshot session Unknown Last — Breakeven — Implied vol 20.9% Delta 0.209 ≈21% ITM Gamma 0.036 Theta -0.057 Vega 0.104 Open interest 0 Model this call Put · $166 In the money Snapshot session Unknown Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put

About this data

Each contract's last price, volume, greeks, implied volatility and open interest belongs to the snapshot session shown in its details; unknown means the provider omitted the timestamp. This chain has snapshot sessions unknown. Cross-contract positioning totals are shown only when every returned row has the same known session. Bid and ask are not included on this plan.

In-the-money strikes are tinted, deepening toward the money, and the bar beside each open-interest figure scales to the heaviest strike shown.

Key facts CIK 1081019 CUSIP 78468R663 13F (30d) 692 filings 671 filers Visit website