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

Track SJNK — free

$24.88 -0.05 (-0.20%) At close · Aug 28

Rebalance outlook locked

Options Chain

Underlying $24.88 · at close Aug 28, 2026 Options Calculator

Positioning

Sep 18, 2026 · 18 days to expiry · 42 contracts · mixed snapshot sessions · Mar 30, 2026–Jun 29, 2026; 33 unknown

Put / call OI

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dated and unknown snapshot sessions

Open interest

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dated and unknown snapshot sessions

Volume

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dated and unknown snapshot sessions

Chain

Click any strike for greeks, breakeven and the calculator

Expiry

Sep 18 18d Oct 16 46d Dec 18 109d Mar 19 200d

Calls						Puts
OI	Vol	IV	Δ	Last	Strike	Last	Δ	IV	Vol	OI
0	2	134.9%	0.967	$10.12		—	—	—	—	0
Call · $15 In the money Snapshot session May 29, 2026 Last $10.12 Breakeven $25.12 Implied vol 134.9% Delta 0.967 ≈97% ITM Gamma 0.01 Theta -0.013 Vega 0.004 Open interest 0 Model this call Put · $15 Snapshot session Unknown Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put
0	—	120%	0.963	—		—	—	—	—	0
Call · $16 In the money Snapshot session Unknown Last — Breakeven — Implied vol 120% Delta 0.963 ≈96% ITM Gamma 0.013 Theta -0.013 Vega 0.004 Open interest 0 Model this call Put · $16 Snapshot session Unknown Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put
0	—	106.1%	0.959	—		—	—	—	—	0
Call · $17 In the money Snapshot session Unknown Last — Breakeven — Implied vol 106.1% Delta 0.959 ≈96% ITM Gamma 0.016 Theta -0.012 Vega 0.005 Open interest 0 Model this call Put · $17 Snapshot session Unknown Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put
0	—	92.9%	0.953	—		—	—	—	—	0
Call · $18 In the money Snapshot session Unknown Last — Breakeven — Implied vol 92.9% Delta 0.953 ≈95% ITM Gamma 0.02 Theta -0.012 Vega 0.005 Open interest 0 Model this call Put · $18 Snapshot session Unknown Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put
0	—	80.5%	0.947	—		—	—	—	—	0
Call · $19 In the money Snapshot session Unknown Last — Breakeven — Implied vol 80.5% Delta 0.947 ≈95% ITM Gamma 0.026 Theta -0.012 Vega 0.005 Open interest 0 Model this call Put · $19 Snapshot session Unknown Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put
0	2	58.4%	0.962	$5.06		—	—	—	—	0
Call · $20 In the money Snapshot session May 18, 2026 Last $5.06 Breakeven $25.06 Implied vol 58.4% Delta 0.962 ≈96% ITM Gamma 0.03 Theta -0.006 Vega 0.005 Open interest 0 Model this call Put · $20 Snapshot session Unknown Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put
0	4	47.5%	0.955	$3.90		—	—	—	—	0
Call · $21 In the money Snapshot session Jun 3, 2026 Last $3.90 Breakeven $24.90 Implied vol 47.5% Delta 0.955 ≈95% ITM Gamma 0.043 Theta -0.006 Vega 0.005 Open interest 0 Model this call Put · $21 Snapshot session Unknown Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put
0	—	37.1%	0.943	—		—	—	—	—	0
Call · $22 In the money Snapshot session Unknown Last — Breakeven — Implied vol 37.1% Delta 0.943 ≈94% ITM Gamma 0.066 Theta -0.005 Vega 0.005 Open interest 0 Model this call Put · $22 Snapshot session Unknown Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put
0	2	28.6%	0.898	$2.10		$0.24	—	—	1	8
Call · $23 In the money Snapshot session Apr 14, 2026 Last $2.10 Breakeven $25.10 Implied vol 28.6% Delta 0.898 ≈90% ITM Gamma 0.125 Theta -0.006 Vega 0.009 Open interest 0 Model this call Put · $23 Snapshot session Jun 29, 2026 Last $0.24 Breakeven $22.76 Implied vol — Delta — Gamma — Theta — Vega — Open interest 8 Model this put
0	—	16.5%	0.837	—		$0.28	-0.313	33.7%	1	2
Call · $24 In the money Snapshot session Unknown Last — Breakeven — Implied vol 16.5% Delta 0.837 ≈84% ITM Gamma 0.298 Theta -0.005 Vega 0.014 Open interest 0 Model this call Put · $24 Snapshot session Jun 29, 2026 Last $0.28 Breakeven $23.72 Implied vol 33.7% Delta -0.313 ≈31% ITM Gamma 0.19 Theta -0.019 Vega 0.019 Open interest 2 Model this put
Underlying $24.88
6	12	—	—	$0.35		$0.86	-0.576	14.7%	12	13
Call · $25 Snapshot session Apr 16, 2026 Last $0.35 Breakeven $25.35 Implied vol — Delta — Gamma — Theta — Vega — Open interest 6 Model this call Put · $25 In the money Snapshot session Mar 30, 2026 Last $0.86 Breakeven $24.14 Implied vol 14.7% Delta -0.576 ≈58% ITM Gamma 0.48 Theta -0.01 Vega 0.022 Open interest 13 Model this put
1	1	—	—	$0.01		—	-0.705	35.2%	—	0
Call · $26 Snapshot session Apr 20, 2026 Last $0.01 Breakeven $26.01 Implied vol — Delta — Gamma — Theta — Vega — Open interest 1 Model this call Put · $26 In the money Snapshot session Unknown Last — Breakeven — Implied vol 35.2% Delta -0.705 ≈70% ITM Gamma 0.176 Theta -0.02 Vega 0.019 Open interest 0 Model this put
0	—	—	—	—		—	-0.997	0.1%	—	0
Call · $27 Snapshot session Unknown Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this call Put · $27 In the money Snapshot session Unknown Last — Breakeven — Implied vol 0.1% Delta -0.997 ≈100% ITM Gamma 0 Theta -0.002 Vega 0 Open interest 0 Model this put
0	—	—	—	—		—	—	—	—	0
Call · $28 Snapshot session Unknown Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this call Put · $28 In the money Snapshot session Unknown Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put
0	—	—	—	—		—	-0.96	38.4%	—	0
Call · $29 Snapshot session Unknown Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this call Put · $29 In the money Snapshot session Unknown Last — Breakeven — Implied vol 38.4% Delta -0.96 ≈96% ITM Gamma 0.038 Theta -0.006 Vega 0.006 Open interest 0 Model this put
0	—	—	—	—		—	—	—	—	0
Call · $30 Snapshot session Unknown Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this call Put · $30 In the money Snapshot session Unknown Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put
0	—	—	—	—		—	—	—	—	0
Call · $31 Snapshot session Unknown Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this call Put · $31 In the money Snapshot session Unknown Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put
0	—	—	—	—		—	—	—	—	0
Call · $32 Snapshot session Unknown Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this call Put · $32 In the money Snapshot session Unknown Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put
0	—	—	—	—		—	—	—	—	0
Call · $33 Snapshot session Unknown Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this call Put · $33 In the money Snapshot session Unknown Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put
0	—	—	—	—		—	—	—	—	0
Call · $34 Snapshot session Unknown Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this call Put · $34 In the money Snapshot session Unknown Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put
0	—	—	—	—		—	—	—	—	0
Call · $35 Snapshot session Unknown Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this call Put · $35 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 mixed snapshot sessions · Mar 30, 2026–Jun 29, 2026; 33 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) 704 filings 675 filers Visit website