STAA · Staar Surgical Co

Track STAA — free

$26.18 +0.85 (+3.36%) At close · Aug 14

Market Cap

$1.31B

50.14M

Options Chain

Underlying $26.18 · at close Aug 14, 2026 Options Calculator

Positioning

Aug 21, 2026 · 5 days to expiry · 24 contracts · mixed snapshot sessions · Jul 16, 2026–Aug 14, 2026; 7 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

Aug 21 5d Sep 18 33d Dec 18 124d Mar 19 215d

Calls						Puts
OI	Vol	IV	Δ	Last	Strike	Last	Δ	IV	Vol	OI
0	—	—	—	—		$0.05	-0.068	351.9%	10	89
Call · $15 In the money Snapshot session Unknown Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this call Put · $15 Snapshot session Aug 6, 2026 Last $0.05 Breakeven $14.95 Implied vol 351.9% Delta -0.068 ≈7% ITM Gamma 0.011 Theta -0.133 Vega 0.004 Open interest 89 Model this put
0	—	—	—	—		$0.05	-0.029	183.4%	10	193
Call · $17.5 In the money Snapshot session Unknown Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this call Put · $17.5 Snapshot session Aug 12, 2026 Last $0.05 Breakeven $17.45 Implied vol 183.4% Delta -0.029 ≈3% ITM Gamma 0.011 Theta -0.035 Vega 0.003 Open interest 193 Model this put
8	15	160.1%	0.927	$6.05		$0.04	-0.108	197.1%	1	40
Call · $20 In the money Snapshot session Aug 14, 2026 Last $6.05 Breakeven $26.05 Implied vol 160.1% Delta 0.927 ≈93% ITM Gamma 0.026 Theta -0.066 Vega 0.005 Open interest 8 Model this call Put · $20 Snapshot session Aug 13, 2026 Last $0.04 Breakeven $19.96 Implied vol 197.1% Delta -0.108 ≈11% ITM Gamma 0.029 Theta -0.107 Vega 0.008 Open interest 40 Model this put
49	10	—	—	$3.10		$0.14	-0.094	97.3%	18	339
Call · $22.5 In the money Snapshot session Aug 13, 2026 Last $3.10 Breakeven $25.60 Implied vol — Delta — Gamma — Theta — Vega — Open interest 49 Model this call Put · $22.5 Snapshot session Aug 13, 2026 Last $0.14 Breakeven $22.36 Implied vol 97.3% Delta -0.094 ≈9% ITM Gamma 0.053 Theta -0.047 Vega 0.005 Open interest 339 Model this put
599	21	21.6%	0.963	$1.35		$0.35	-0.269	65.8%	64	268
Call · $25 In the money Snapshot session Aug 14, 2026 Last $1.35 Breakeven $26.35 Implied vol 21.6% Delta 0.963 ≈96% ITM Gamma 0.115 Theta -0.007 Vega 0.003 Open interest 599 Model this call Put · $25 Snapshot session Aug 14, 2026 Last $0.35 Breakeven $24.65 Implied vol 65.8% Delta -0.269 ≈27% ITM Gamma 0.154 Theta -0.062 Vega 0.011 Open interest 268 Model this put
Underlying $26.18
324	2	62.4%	0.283	$0.16		$3.81	-0.615	108.3%	2	2
Call · $27.5 Snapshot session Aug 14, 2026 Last $0.16 Breakeven $27.66 Implied vol 62.4% Delta 0.283 ≈28% ITM Gamma 0.167 Theta -0.062 Vega 0.012 Open interest 324 Model this call Put · $27.5 In the money Snapshot session Jul 27, 2026 Last $3.81 Breakeven $23.69 Implied vol 108.3% Delta -0.615 ≈61% ITM Gamma 0.11 Theta -0.12 Vega 0.013 Open interest 2 Model this put
94	9	77.4%	0.087	$0.06		$5.22	-0.862	95.5%	2	1
Call · $30 Snapshot session Aug 13, 2026 Last $0.06 Breakeven $30.06 Implied vol 77.4% Delta 0.087 ≈9% ITM Gamma 0.063 Theta -0.036 Vega 0.006 Open interest 94 Model this call Put · $30 In the money Snapshot session Aug 13, 2026 Last $5.22 Breakeven $24.78 Implied vol 95.5% Delta -0.862 ≈86% ITM Gamma 0.072 Theta -0.059 Vega 0.006 Open interest 1 Model this put
18	1	144.1%	0.134	$0.20		—	-0.893	130.7%	—	0
Call · $32.5 Snapshot session Aug 5, 2026 Last $0.20 Breakeven $32.70 Implied vol 144.1% Delta 0.134 ≈13% ITM Gamma 0.046 Theta -0.09 Vega 0.006 Open interest 18 Model this call Put · $32.5 In the money Snapshot session Unknown Last — Breakeven — Implied vol 130.7% Delta -0.893 ≈89% ITM Gamma 0.044 Theta -0.067 Vega 0.006 Open interest 0 Model this put
44	6	176.1%	0.115	$0.05		—	-0.871	185.8%	—	0
Call · $35 Snapshot session Aug 13, 2026 Last $0.05 Breakeven $35.05 Implied vol 176.1% Delta 0.115 ≈11% ITM Gamma 0.034 Theta -0.098 Vega 0.007 Open interest 44 Model this call Put · $35 In the money Snapshot session Unknown Last — Breakeven — Implied vol 185.8% Delta -0.871 ≈87% ITM Gamma 0.035 Theta -0.11 Vega 0.007 Open interest 0 Model this put
16	3	157%	0.038	$0.40		—	-0.875	222.8%	—	0
Call · $37.5 Snapshot session Jul 16, 2026 Last $0.40 Breakeven $37.90 Implied vol 157% Delta 0.038 ≈4% ITM Gamma 0.016 Theta -0.038 Vega 0.004 Open interest 16 Model this call Put · $37.5 In the money Snapshot session Unknown Last — Breakeven — Implied vol 222.8% Delta -0.875 ≈87% ITM Gamma 0.028 Theta -0.13 Vega 0.007 Open interest 0 Model this put
6	1	251.6%	0.117	$0.05		—	-0.94	203%	—	0
Call · $40 Snapshot session Jul 20, 2026 Last $0.05 Breakeven $40.05 Implied vol 251.6% Delta 0.117 ≈12% ITM Gamma 0.024 Theta -0.143 Vega 0.007 Open interest 6 Model this call Put · $40 In the money Snapshot session Unknown Last — Breakeven — Implied vol 203% Delta -0.94 ≈94% ITM Gamma 0.018 Theta -0.067 Vega 0.004 Open interest 0 Model this put
2	1	284.4%	0.118	$0.05		—	-0.974	191%	—	0
Call · $42.5 Snapshot session Jul 21, 2026 Last $0.05 Breakeven $42.55 Implied vol 284.4% Delta 0.118 ≈12% ITM Gamma 0.021 Theta -0.162 Vega 0.007 Open interest 2 Model this call Put · $42.5 In the money Snapshot session Unknown Last — Breakeven — Implied vol 191% Delta -0.974 ≈97% ITM Gamma 0.01 Theta -0.031 Vega 0.002 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 · Jul 16, 2026–Aug 14, 2026; 7 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 718937 CUSIP 852312305 13F (30d) 200 filings 189 filers Visit website Investor relations