WLDN · Willdan Group, Inc.

Track WLDN — free

$86.40 +1.68 (+1.98%) At close · Aug 14

Market Cap

$1.29B

15.23M

Options Chain

Underlying $86.40 · at close Aug 14, 2026 Options Calculator

Positioning

Aug 21, 2026 · 6 days to expiry · 64 contracts · mixed snapshot sessions · Jan 15, 2026–Aug 14, 2026; 10 unknown

Put / call OI

—

dated and unknown snapshot sessions

Open interest

—

dated and unknown snapshot sessions

Volume

—

dated and unknown snapshot sessions

Chain

Click any strike for greeks, breakeven and the calculator

Expiry

Aug 21 6d Sep 18 34d Nov 20 97d Feb 19 188d

Calls						Puts
OI	Vol	IV	Δ	Last	Strike	Last	Δ	IV	Vol	OI
3	1	305.3%	0.965	$49.40		$0.60	-0.029	286.4%	1	4
Call · $45 In the money Snapshot session May 12, 2026 Last $49.40 Breakeven $94.40 Implied vol 305.3% Delta 0.965 ≈96% ITM Gamma 0.002 Theta -0.215 Vega 0.008 Open interest 3 Model this call Put · $45 Snapshot session May 13, 2026 Last $0.60 Breakeven $44.40 Implied vol 286.4% Delta -0.029 ≈3% ITM Gamma 0.002 Theta -0.166 Vega 0.008 Open interest 4 Model this put
4	1	279.7%	0.953	$44.70		$0.60	-0.038	256.8%	1	6
Call · $50 In the money Snapshot session May 12, 2026 Last $44.70 Breakeven $94.70 Implied vol 279.7% Delta 0.953 ≈95% ITM Gamma 0.003 Theta -0.253 Vega 0.015 Open interest 4 Model this call Put · $50 Snapshot session Aug 3, 2026 Last $0.60 Breakeven $49.40 Implied vol 256.8% Delta -0.038 ≈4% ITM Gamma 0.003 Theta -0.19 Vega 0.009 Open interest 6 Model this put
9	1	230.1%	0.95	$39.00		$0.05	-0.046	222%	1	20
Call · $55 In the money Snapshot session Jun 1, 2026 Last $39.00 Breakeven $94.00 Implied vol 230.1% Delta 0.95 ≈95% ITM Gamma 0.004 Theta -0.22 Vega 0.009 Open interest 9 Model this call Put · $55 Snapshot session Aug 11, 2026 Last $0.05 Breakeven $54.95 Implied vol 222% Delta -0.046 ≈5% ITM Gamma 0.004 Theta -0.193 Vega 0.009 Open interest 20 Model this put
23	4	200.1%	0.933	$24.56		$0.11	-0.013	128.9%	1	2.5k
Call · $60 In the money Snapshot session Aug 11, 2026 Last $24.56 Breakeven $84.56 Implied vol 200.1% Delta 0.933 ≈93% ITM Gamma 0.006 Theta -0.238 Vega 0.017 Open interest 23 Model this call Put · $60 Snapshot session Aug 10, 2026 Last $0.11 Breakeven $59.89 Implied vol 128.9% Delta -0.013 ≈1% ITM Gamma 0.002 Theta -0.039 Vega 0.005 Open interest 2.5k Model this put
32	10	155.3%	0.929	$20.80		$0.07	-0.058	145.6%	2	14
Call · $65 In the money Snapshot session Aug 14, 2026 Last $20.80 Breakeven $85.80 Implied vol 155.3% Delta 0.929 ≈93% ITM Gamma 0.008 Theta -0.193 Vega 0.017 Open interest 32 Model this call Put · $65 Snapshot session Aug 14, 2026 Last $0.07 Breakeven $64.93 Implied vol 145.6% Delta -0.058 ≈6% ITM Gamma 0.007 Theta -0.152 Vega 0.017 Open interest 14 Model this put
47	3	90.8%	0.963	$16.90		$0.18	-0.07	111.6%	1	65
Call · $70 In the money Snapshot session Aug 14, 2026 Last $16.90 Breakeven $86.90 Implied vol 90.8% Delta 0.963 ≈96% ITM Gamma 0.008 Theta -0.072 Vega 0.01 Open interest 47 Model this call Put · $70 Snapshot session Aug 12, 2026 Last $0.18 Breakeven $69.82 Implied vol 111.6% Delta -0.07 ≈7% ITM Gamma 0.011 Theta -0.133 Vega 0.018 Open interest 65 Model this put
76	48	78.1%	0.917	$11.24		$0.33	-0.101	85.4%	3	30
Call · $75 In the money Snapshot session Aug 7, 2026 Last $11.24 Breakeven $86.24 Implied vol 78.1% Delta 0.917 ≈92% ITM Gamma 0.017 Theta -0.113 Vega 0.019 Open interest 76 Model this call Put · $75 Snapshot session Aug 11, 2026 Last $0.33 Breakeven $74.67 Implied vol 85.4% Delta -0.101 ≈10% ITM Gamma 0.018 Theta -0.134 Vega 0.019 Open interest 30 Model this put
74	3	44.6%	0.898	$5.30		$1.75	-0.159	57.3%	12	25
Call · $80 In the money Snapshot session Aug 11, 2026 Last $5.30 Breakeven $85.30 Implied vol 44.6% Delta 0.898 ≈90% ITM Gamma 0.035 Theta -0.078 Vega 0.019 Open interest 74 Model this call Put · $80 Snapshot session Aug 10, 2026 Last $1.75 Breakeven $78.25 Implied vol 57.3% Delta -0.159 ≈16% ITM Gamma 0.037 Theta -0.122 Vega 0.029 Open interest 25 Model this put
115	2	47.7%	0.592	$2.65		$3.06	-0.396	40.3%	1	57
Call · $85 In the money Snapshot session Aug 14, 2026 Last $2.65 Breakeven $87.65 Implied vol 47.7% Delta 0.592 ≈59% ITM Gamma 0.072 Theta -0.17 Vega 0.045 Open interest 115 Model this call Put · $85 Snapshot session Aug 12, 2026 Last $3.06 Breakeven $81.94 Implied vol 40.3% Delta -0.396 ≈40% ITM Gamma 0.084 Theta -0.136 Vega 0.045 Open interest 57 Model this put
Underlying $86.40
187	2	56.5%	0.291	$0.75		$17.85	-0.87	30%	4	27
Call · $90 Snapshot session Aug 13, 2026 Last $0.75 Breakeven $90.75 Implied vol 56.5% Delta 0.291 ≈29% ITM Gamma 0.053 Theta -0.175 Vega 0.041 Open interest 187 Model this call Put · $90 In the money Snapshot session Jul 22, 2026 Last $17.85 Breakeven $72.15 Implied vol 30% Delta -0.87 ≈87% ITM Gamma 0.065 Theta -0.052 Vega 0.021 Open interest 27 Model this put
79	3	47.9%	0.063	$0.15		$16.90	—	—	4	17
Call · $95 Snapshot session Aug 14, 2026 Last $0.15 Breakeven $95.15 Implied vol 47.9% Delta 0.063 ≈6% ITM Gamma 0.023 Theta -0.054 Vega 0.012 Open interest 79 Model this call Put · $95 In the money Snapshot session Jun 22, 2026 Last $16.90 Breakeven $78.10 Implied vol — Delta — Gamma — Theta — Vega — Open interest 17 Model this put
111	5	58.9%	0.029	$0.05		$16.95	—	—	15	1
Call · $100 Snapshot session Aug 14, 2026 Last $0.05 Breakeven $100.05 Implied vol 58.9% Delta 0.029 ≈3% ITM Gamma 0.01 Theta -0.035 Vega 0.006 Open interest 111 Model this call Put · $100 In the money Snapshot session Aug 7, 2026 Last $16.95 Breakeven $83.05 Implied vol — Delta — Gamma — Theta — Vega — Open interest 1 Model this put
64	9	83.8%	0.04	$0.05		$21.75	—	—	15	1
Call · $105 Snapshot session Aug 10, 2026 Last $0.05 Breakeven $105.05 Implied vol 83.8% Delta 0.04 ≈4% ITM Gamma 0.009 Theta -0.064 Vega 0.013 Open interest 64 Model this call Put · $105 In the money Snapshot session Aug 7, 2026 Last $21.75 Breakeven $83.25 Implied vol — Delta — Gamma — Theta — Vega — Open interest 1 Model this put
94	11	99.7%	0.034	$0.02		$39.77	—	—	2	0
Call · $110 Snapshot session Aug 14, 2026 Last $0.02 Breakeven $110.02 Implied vol 99.7% Delta 0.034 ≈3% ITM Gamma 0.007 Theta -0.068 Vega 0.007 Open interest 94 Model this call Put · $110 In the money Snapshot session Jul 28, 2026 Last $39.77 Breakeven $70.23 Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put
161	1	136.6%	0.065	$0.01		$41.70	—	—	1	0
Call · $115 Snapshot session Aug 10, 2026 Last $0.01 Breakeven $115.01 Implied vol 136.6% Delta 0.065 ≈7% ITM Gamma 0.008 Theta -0.155 Vega 0.014 Open interest 161 Model this call Put · $115 In the money Snapshot session Apr 30, 2026 Last $41.70 Breakeven $73.30 Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put
55	3	151.4%	0.06	$0.20		$39.50	—	—	1	1
Call · $120 Snapshot session Jul 24, 2026 Last $0.20 Breakeven $120.20 Implied vol 151.4% Delta 0.06 ≈6% ITM Gamma 0.007 Theta -0.16 Vega 0.014 Open interest 55 Model this call Put · $120 In the money Snapshot session May 8, 2026 Last $39.50 Breakeven $80.50 Implied vol — Delta — Gamma — Theta — Vega — Open interest 1 Model this put
21	5	165.7%	0.056	$0.12		$31.70	—	—	1	1
Call · $125 Snapshot session Aug 3, 2026 Last $0.12 Breakeven $125.12 Implied vol 165.7% Delta 0.056 ≈6% ITM Gamma 0.006 Theta -0.165 Vega 0.014 Open interest 21 Model this call Put · $125 In the money Snapshot session May 11, 2026 Last $31.70 Breakeven $93.30 Implied vol — Delta — Gamma — Theta — Vega — Open interest 1 Model this put
39	1	179.4%	0.052	$0.10		—	—	—	—	0
Call · $130 Snapshot session Jun 25, 2026 Last $0.10 Breakeven $130.10 Implied vol 179.4% Delta 0.052 ≈5% ITM Gamma 0.005 Theta -0.17 Vega 0.014 Open interest 39 Model this call Put · $130 In the money Snapshot session Unknown Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put
24	5	196%	0.054	$0.35		—	—	—	—	0
Call · $135 Snapshot session Aug 3, 2026 Last $0.35 Breakeven $135.35 Implied vol 196% Delta 0.054 ≈5% ITM Gamma 0.005 Theta -0.19 Vega 0.015 Open interest 24 Model this call Put · $135 In the money Snapshot session Unknown Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put
43	6	205.3%	0.047	$0.05		$39.31	—	—	1	0
Call · $140 Snapshot session Jul 28, 2026 Last $0.05 Breakeven $140.05 Implied vol 205.3% Delta 0.047 ≈5% ITM Gamma 0.004 Theta -0.18 Vega 0.015 Open interest 43 Model this call Put · $140 In the money Snapshot session Feb 4, 2026 Last $39.31 Breakeven $100.69 Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put
5	1	224.2%	0.053	$0.05		—	—	—	—	0
Call · $145 Snapshot session Jun 29, 2026 Last $0.05 Breakeven $145.05 Implied vol 224.2% Delta 0.053 ≈5% ITM Gamma 0.004 Theta -0.215 Vega 0.015 Open interest 5 Model this call Put · $145 In the money Snapshot session Unknown Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put
31	2	229.4%	0.044	$0.05		$36.00	—	—	1	0
Call · $150 Snapshot session Jul 29, 2026 Last $0.05 Breakeven $150.05 Implied vol 229.4% Delta 0.044 ≈4% ITM Gamma 0.004 Theta -0.19 Vega 0.015 Open interest 31 Model this call Put · $150 In the money Snapshot session Jan 20, 2026 Last $36.00 Breakeven $114.00 Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put
6	1	276.3%	0.077	$2.60		$83.10	—	—	2	0
Call · $155 Snapshot session Mar 4, 2026 Last $2.60 Breakeven $157.60 Implied vol 276.3% Delta 0.077 ≈8% ITM Gamma 0.005 Theta -0.355 Vega 0.015 Open interest 6 Model this call Put · $155 In the money Snapshot session Jul 9, 2026 Last $83.10 Breakeven $71.90 Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put
101	7	248.7%	0.041	$0.90		$88.07	—	—	1	1
Call · $160 Snapshot session Apr 2, 2026 Last $0.90 Breakeven $160.90 Implied vol 248.7% Delta 0.041 ≈4% ITM Gamma 0.003 Theta -0.195 Vega 0.008 Open interest 101 Model this call Put · $160 In the money Snapshot session Jul 9, 2026 Last $88.07 Breakeven $71.93 Implied vol — Delta — Gamma — Theta — Vega — Open interest 1 Model this put
10	1	263.9%	0.043	$0.75		$93.07	—	—	1	0
Call · $165 Snapshot session Mar 18, 2026 Last $0.75 Breakeven $165.75 Implied vol 263.9% Delta 0.043 ≈4% ITM Gamma 0.003 Theta -0.216 Vega 0.008 Open interest 10 Model this call Put · $165 In the money Snapshot session Jul 9, 2026 Last $93.07 Breakeven $71.93 Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put
19	2	266.3%	0.038	$0.05		$49.10	—	—	3	0
Call · $170 Snapshot session Jul 28, 2026 Last $0.05 Breakeven $170.05 Implied vol 266.3% Delta 0.038 ≈4% ITM Gamma 0.003 Theta -0.198 Vega 0.008 Open interest 19 Model this call Put · $170 In the money Snapshot session Jan 15, 2026 Last $49.10 Breakeven $120.90 Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put
2	1	274.7%	0.038	$13.80		$83.70	—	—	1	0
Call · $175 Snapshot session Jan 16, 2026 Last $13.80 Breakeven $188.80 Implied vol 274.7% Delta 0.038 ≈4% ITM Gamma 0.003 Theta -0.199 Vega 0.008 Open interest 2 Model this call Put · $175 In the money Snapshot session May 12, 2026 Last $83.70 Breakeven $91.30 Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put
0	—	282.9%	0.037	—		$81.90	—	—	1	0
Call · $180 Snapshot session Unknown Last — Breakeven — Implied vol 282.9% Delta 0.037 ≈4% ITM Gamma 0.002 Theta -0.201 Vega 0.008 Open interest 0 Model this call Put · $180 In the money Snapshot session Jun 4, 2026 Last $81.90 Breakeven $98.10 Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put
1	1	—	—	$0.86		—	—	—	—	0
Call · $185 Snapshot session Mar 5, 2026 Last $0.86 Breakeven $185.86 Implied vol — Delta — Gamma — Theta — Vega — Open interest 1 Model this call Put · $185 In the money Snapshot session Unknown Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put
0	—	—	—	—		—	—	—	—	0
Call · $190 Snapshot session Unknown Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this call Put · $190 In the money Snapshot session Unknown Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put
0	—	—	—	—		—	—	—	—	0
Call · $195 Snapshot session Unknown Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this call Put · $195 In the money Snapshot session Unknown Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put
1	1	—	—	$2.00		—	—	—	—	0
Call · $200 Snapshot session Feb 27, 2026 Last $2.00 Breakeven $202.00 Implied vol — Delta — Gamma — Theta — Vega — Open interest 1 Model this call Put · $200 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 · Jan 15, 2026–Aug 14, 2026; 10 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. The 21 strikes around the money are shown by default — switch to "All 32" for the wings.

Key facts CIK 1370450 CUSIP 96924N100 13F (30d) 238 filings 231 filers Visit website Investor relations