ALG · Alamo Group Inc

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$164.24 -0.19 (-0.12%) At close · Jul 28

Market Cap

$2.00B

12.17M

Options Chain

15-min delayed Underlying $164.24 · at close Jul 28, 2026 Options Calculator

Positioning

Aug 21, 2026 · 23 days to expiry · 54 contracts

Put / call OI

23.75

Put-heavy positioning

Open interest

contracts outstanding

Volume

traded today

Max pain

$165.00

$0.76 above spot

ATM implied vol

39.9%

market's expected move

Open interest by strike

Calls Puts

100

105

110

115

120

125

130

135

140

145

150

155

160

165

170

175

180

185

190

195

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220

230

240

250

Chain

Click any strike for greeks, breakeven and the calculator

Expiry

Aug 21 23d Sep 18 51d Dec 18 142d Mar 19 233d

Calls						Puts
OI	Vol	IV	Δ	Last	Strike	Last	Δ	IV	Vol	OI
0	—	105.5%	0.986	—		—	—	—	—	0
Call · $95 In the money Last — Breakeven — Implied vol 105.5% Delta 0.986 ≈99% ITM Gamma 0.001 Theta -0.038 Vega 0.016 Open interest 0 Model this call Put · $95 Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put
0	—	76%	0.996	—		—	-0.023	107.5%	—	0
Call · $100 In the money Last — Breakeven — Implied vol 76% Delta 0.996 ≈100% ITM Gamma 0 Theta -0.011 Vega 0.003 Open interest 0 Model this call Put · $100 Last — Breakeven — Implied vol 107.5% Delta -0.023 ≈2% ITM Gamma 0.001 Theta -0.052 Vega 0.033 Open interest 0 Model this put
0	—	74.5%	0.993	—		—	-0.025	97.9%	—	0
Call · $105 In the money Last — Breakeven — Implied vol 74.5% Delta 0.993 ≈99% ITM Gamma 0.001 Theta -0.017 Vega 0.007 Open interest 0 Model this call Put · $105 Last — Breakeven — Implied vol 97.9% Delta -0.025 ≈2% ITM Gamma 0.001 Theta -0.051 Vega 0.033 Open interest 0 Model this put
0	—	75.3%	0.986	—		—	-0.027	88.7%	—	0
Call · $110 In the money Last — Breakeven — Implied vol 75.3% Delta 0.986 ≈99% ITM Gamma 0.001 Theta -0.029 Vega 0.017 Open interest 0 Model this call Put · $110 Last — Breakeven — Implied vol 88.7% Delta -0.027 ≈3% ITM Gamma 0.002 Theta -0.049 Vega 0.034 Open interest 0 Model this put
0	—	75.7%	0.976	—		—	-0.03	80%	—	0
Call · $115 In the money Last — Breakeven — Implied vol 75.7% Delta 0.976 ≈98% ITM Gamma 0.002 Theta -0.044 Vega 0.017 Open interest 0 Model this call Put · $115 Last — Breakeven — Implied vol 80% Delta -0.03 ≈3% ITM Gamma 0.002 Theta -0.048 Vega 0.035 Open interest 0 Model this put
0	—	67.7%	0.975	—		—	-0.033	71.7%	—	0
Call · $120 In the money Last — Breakeven — Implied vol 67.7% Delta 0.975 ≈97% ITM Gamma 0.002 Theta -0.043 Vega 0.036 Open interest 0 Model this call Put · $120 Last — Breakeven — Implied vol 71.7% Delta -0.033 ≈3% ITM Gamma 0.002 Theta -0.046 Vega 0.036 Open interest 0 Model this put
0	—	60.8%	0.969	—		—	-0.04	65.1%	—	0
Call · $125 In the money Last — Breakeven — Implied vol 60.8% Delta 0.969 ≈97% ITM Gamma 0.003 Theta -0.045 Vega 0.036 Open interest 0 Model this call Put · $125 Last — Breakeven — Implied vol 65.1% Delta -0.04 ≈4% ITM Gamma 0.003 Theta -0.049 Vega 0.036 Open interest 0 Model this put
0	—	58.3%	0.952	—		—	-0.051	60.1%	—	0
Call · $130 In the money Last — Breakeven — Implied vol 58.3% Delta 0.952 ≈95% ITM Gamma 0.004 Theta -0.059 Vega 0.037 Open interest 0 Model this call Put · $130 Last — Breakeven — Implied vol 60.1% Delta -0.051 ≈5% ITM Gamma 0.004 Theta -0.056 Vega 0.037 Open interest 0 Model this put
0	—	53.8%	0.937	—		—	-0.058	52.6%	—	0
Call · $135 In the money Last — Breakeven — Implied vol 53.8% Delta 0.937 ≈94% ITM Gamma 0.006 Theta -0.068 Vega 0.065 Open interest 0 Model this call Put · $135 Last — Breakeven — Implied vol 52.6% Delta -0.058 ≈6% ITM Gamma 0.005 Theta -0.054 Vega 0.039 Open interest 0 Model this put
0	—	46.1%	0.925	—		—	-0.077	46.7%	—	0
Call · $140 In the money Last — Breakeven — Implied vol 46.1% Delta 0.925 ≈92% ITM Gamma 0.007 Theta -0.066 Vega 0.066 Open interest 0 Model this call Put · $140 Last — Breakeven — Implied vol 46.7% Delta -0.077 ≈8% ITM Gamma 0.007 Theta -0.059 Vega 0.066 Open interest 0 Model this put
0	—	46.7%	0.871	—		—	-0.112	43.2%	—	0
Call · $145 In the money Last — Breakeven — Implied vol 46.7% Delta 0.871 ≈87% ITM Gamma 0.011 Theta -0.096 Vega 0.102 Open interest 0 Model this call Put · $145 Last — Breakeven — Implied vol 43.2% Delta -0.112 ≈11% ITM Gamma 0.011 Theta -0.072 Vega 0.068 Open interest 0 Model this put
1	1	43.1%	0.816	$21.00		—	-0.17	40.3%	—	0
Call · $150 In the money Last $21.00 Breakeven $171.00 Implied vol 43.1% Delta 0.816 ≈82% ITM Gamma 0.015 Theta -0.111 Vega 0.104 Open interest 1 Model this call Put · $150 Last — Breakeven — Implied vol 40.3% Delta -0.17 ≈17% ITM Gamma 0.015 Theta -0.089 Vega 0.104 Open interest 0 Model this put
0	—	42%	0.729	—		—	-0.25	37.4%	—	0
Call · $155 In the money Last — Breakeven — Implied vol 42% Delta 0.729 ≈73% ITM Gamma 0.019 Theta -0.131 Vega 0.139 Open interest 0 Model this call Put · $155 Last — Breakeven — Implied vol 37.4% Delta -0.25 ≈25% ITM Gamma 0.021 Theta -0.103 Vega 0.138 Open interest 0 Model this put
0	—	39.7%	0.628	—		—	-0.365	36.5%	—	0
Call · $160 In the money Last — Breakeven — Implied vol 39.7% Delta 0.628 ≈63% ITM Gamma 0.023 Theta -0.141 Vega 0.162 Open interest 0 Model this call Put · $160 Last — Breakeven — Implied vol 36.5% Delta -0.365 ≈36% ITM Gamma 0.025 Theta -0.119 Vega 0.162 Open interest 0 Model this put
Underlying $164.24
0	—	38.7%	0.508	—		$5.40	-0.492	41.1%	2	95
Call · $165 Last — Breakeven — Implied vol 38.7% Delta 0.508 ≈51% ITM Gamma 0.025 Theta -0.145 Vega 0.165 Open interest 0 Model this call Put · $165 In the money Last $5.40 Breakeven $159.60 Implied vol 41.1% Delta -0.492 ≈49% ITM Gamma 0.024 Theta -0.142 Vega 0.165 Open interest 95 Model this put
1	1	40.9%	0.394	$5.50		—	-0.624	37%	—	0
Call · $170 Last $5.50 Breakeven $175.50 Implied vol 40.9% Delta 0.394 ≈39% ITM Gamma 0.023 Theta -0.146 Vega 0.168 Open interest 1 Model this call Put · $170 In the money Last — Breakeven — Implied vol 37% Delta -0.624 ≈62% ITM Gamma 0.025 Theta -0.12 Vega 0.147 Open interest 0 Model this put
0	—	39.9%	0.288	—		—	-0.737	36.7%	—	0
Call · $175 Last — Breakeven — Implied vol 39.9% Delta 0.288 ≈29% ITM Gamma 0.021 Theta -0.125 Vega 0.15 Open interest 0 Model this call Put · $175 In the money Last — Breakeven — Implied vol 36.7% Delta -0.737 ≈74% ITM Gamma 0.022 Theta -0.1 Vega 0.148 Open interest 0 Model this put
0	—	43.2%	0.222	—		—	-0.831	36.2%	—	0
Call · $180 Last — Breakeven — Implied vol 43.2% Delta 0.222 ≈22% ITM Gamma 0.017 Theta -0.117 Vega 0.117 Open interest 0 Model this call Put · $180 In the money Last — Breakeven — Implied vol 36.2% Delta -0.831 ≈83% ITM Gamma 0.018 Theta -0.073 Vega 0.115 Open interest 0 Model this put
1	1	46.8%	0.176	$1.20		—	-0.891	37.3%	—	0
Call · $185 Last $1.20 Breakeven $186.20 Implied vol 46.8% Delta 0.176 ≈18% ITM Gamma 0.013 Theta -0.11 Vega 0.119 Open interest 1 Model this call Put · $185 In the money Last — Breakeven — Implied vol 37.3% Delta -0.891 ≈89% ITM Gamma 0.013 Theta -0.054 Vega 0.077 Open interest 0 Model this put
0	—	44.5%	0.111	—		—	-0.926	39.8%	—	0
Call · $190 Last — Breakeven — Implied vol 44.5% Delta 0.111 ≈11% ITM Gamma 0.01 Theta -0.076 Vega 0.08 Open interest 0 Model this call Put · $190 In the money Last — Breakeven — Implied vol 39.8% Delta -0.926 ≈93% ITM Gamma 0.01 Theta -0.042 Vega 0.071 Open interest 0 Model this put
0	—	45.7%	0.076	—		—	-0.956	40.4%	—	0
Call · $195 Last — Breakeven — Implied vol 45.7% Delta 0.076 ≈8% ITM Gamma 0.008 Theta -0.06 Vega 0.047 Open interest 0 Model this call Put · $195 In the money Last — Breakeven — Implied vol 40.4% Delta -0.956 ≈96% ITM Gamma 0.007 Theta -0.027 Vega 0.042 Open interest 0 Model this put
1	1	46.2%	0.053	$0.30		—	-0.966	43.9%	—	0
Call · $200 Last $0.30 Breakeven $200.30 Implied vol 46.2% Delta 0.053 ≈5% ITM Gamma 0.006 Theta -0.045 Vega 0.048 Open interest 1 Model this call Put · $200 In the money Last — Breakeven — Implied vol 43.9% Delta -0.966 ≈97% ITM Gamma 0.005 Theta -0.023 Vega 0.037 Open interest 0 Model this put
0	—	57.4%	0.054	—		—	-0.977	50.6%	—	0
Call · $210 Last — Breakeven — Implied vol 57.4% Delta 0.054 ≈5% ITM Gamma 0.005 Theta -0.056 Vega 0.049 Open interest 0 Model this call Put · $210 In the money Last — Breakeven — Implied vol 50.6% Delta -0.977 ≈98% ITM Gamma 0.004 Theta -0.019 Vega 0.02 Open interest 0 Model this put
0	—	—	—	—		—	—	—	—	0
Call · $220 Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this call Put · $220 In the money Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put
0	—	—	—	—		—	—	—	—	0
Call · $230 Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this call Put · $230 In the money Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put
0	—	—	—	—		—	—	—	—	0
Call · $240 Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this call Put · $240 In the money Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put
0	—	—	—	—		—	-0.975	84.1%	—	0
Call · $250 Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this call Put · $250 In the money Last — Breakeven — Implied vol 84.1% Delta -0.975 ≈98% ITM Gamma 0.002 Theta -0.035 Vega 0.022 Open interest 0 Model this put

About this data

Greeks, implied volatility, open interest and the last price come from the latest daily snapshot and are 15-minute delayed. 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. Max pain is the listed strike where the most open interest would expire worthless — a positioning reference, not a forecast.

Key facts CIK 897077 CUSIP 011311107 13F (30d) 72 filings 52 filers Visit website Investor relations