GHM · Graham Corp

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$99.82 -4.48 (-4.30%) At close · Jul 28

Market Cap

$1.22B

11.69M

Options Chain

15-min delayed Underlying $99.82 · at close Jul 28, 2026 Options Calculator

Positioning

Aug 21, 2026 · 23 days to expiry · 46 contracts

Put / call OI

1.08

Balanced positioning

Open interest

contracts outstanding

Volume

traded today

Max pain

$110.00

$10.18 above spot

ATM implied vol

75.9%

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

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	—	77.5%	0.974	—		—	-0.046	89.7%	—	0
Call · $70 In the money Last — Breakeven — Implied vol 77.5% Delta 0.974 ≈97% ITM Gamma 0.003 Theta -0.032 Vega 0.021 Open interest 0 Model this call Put · $70 Last — Breakeven — Implied vol 89.7% Delta -0.046 ≈5% ITM Gamma 0.004 Theta -0.046 Vega 0.021 Open interest 0 Model this put
0	—	81%	0.934	—		—	-0.061	78.9%	—	0
Call · $75 In the money Last — Breakeven — Implied vol 81% Delta 0.934 ≈93% ITM Gamma 0.006 Theta -0.063 Vega 0.038 Open interest 0 Model this call Put · $75 Last — Breakeven — Implied vol 78.9% Delta -0.061 ≈6% ITM Gamma 0.006 Theta -0.051 Vega 0.038 Open interest 0 Model this put
0	—	81.3%	0.884	—		—	-0.102	75.5%	—	0
Call · $80 In the money Last — Breakeven — Implied vol 81.3% Delta 0.884 ≈88% ITM Gamma 0.01 Theta -0.093 Vega 0.059 Open interest 0 Model this call Put · $80 Last — Breakeven — Implied vol 75.5% Delta -0.102 ≈10% ITM Gamma 0.009 Theta -0.072 Vega 0.039 Open interest 0 Model this put
0	—	77.4%	0.823	—		—	-0.167	73.2%	—	0
Call · $85 In the money Last — Breakeven — Implied vol 77.4% Delta 0.823 ≈82% ITM Gamma 0.013 Theta -0.116 Vega 0.061 Open interest 0 Model this call Put · $85 Last — Breakeven — Implied vol 73.2% Delta -0.167 ≈17% ITM Gamma 0.014 Theta -0.097 Vega 0.061 Open interest 0 Model this put
0	—	74.3%	0.743	—		$2.70	-0.265	78.3%	1	6
Call · $90 In the money Last — Breakeven — Implied vol 74.3% Delta 0.743 ≈74% ITM Gamma 0.017 Theta -0.136 Vega 0.083 Open interest 0 Model this call Put · $90 Last $2.70 Breakeven $87.30 Implied vol 78.3% Delta -0.265 ≈26% ITM Gamma 0.017 Theta -0.136 Vega 0.083 Open interest 6 Model this put
0	—	74.1%	0.644	—		$3.58	-0.358	75.4%	1	10
Call · $95 In the money Last — Breakeven — Implied vol 74.1% Delta 0.644 ≈64% ITM Gamma 0.02 Theta -0.155 Vega 0.097 Open interest 0 Model this call Put · $95 Last $3.58 Breakeven $91.42 Implied vol 75.4% Delta -0.358 ≈36% ITM Gamma 0.02 Theta -0.149 Vega 0.097 Open interest 10 Model this put
Underlying $99.82
0	—	75.2%	0.539	—		$8.00	-0.462	76.6%	1	6
Call · $100 Last — Breakeven — Implied vol 75.2% Delta 0.539 ≈54% ITM Gamma 0.021 Theta -0.169 Vega 0.1 Open interest 0 Model this call Put · $100 In the money Last $8.00 Breakeven $92.00 Implied vol 76.6% Delta -0.462 ≈46% ITM Gamma 0.021 Theta -0.162 Vega 0.1 Open interest 6 Model this put
0	—	74%	0.436	—		$5.77	-0.565	74.4%	1	4
Call · $105 Last — Breakeven — Implied vol 74% Delta 0.436 ≈44% ITM Gamma 0.021 Theta -0.162 Vega 0.103 Open interest 0 Model this call Put · $105 In the money Last $5.77 Breakeven $99.23 Implied vol 74.4% Delta -0.565 ≈57% ITM Gamma 0.021 Theta -0.153 Vega 0.103 Open interest 4 Model this put
12	2	75.6%	0.347	$8.67		$6.20	-0.66	74.2%	1	1
Call · $110 Last $8.67 Breakeven $118.67 Implied vol 75.6% Delta 0.347 ≈35% ITM Gamma 0.019 Theta -0.154 Vega 0.092 Open interest 12 Model this call Put · $110 In the money Last $6.20 Breakeven $103.80 Implied vol 74.2% Delta -0.66 ≈66% ITM Gamma 0.02 Theta -0.14 Vega 0.092 Open interest 1 Model this put
2	1	74.6%	0.259	$4.30		$11.25	-0.745	74.4%	1	1
Call · $115 Last $4.30 Breakeven $119.30 Implied vol 74.6% Delta 0.259 ≈26% ITM Gamma 0.017 Theta -0.135 Vega 0.073 Open interest 2 Model this call Put · $115 In the money Last $11.25 Breakeven $103.75 Implied vol 74.4% Delta -0.745 ≈74% ITM Gamma 0.018 Theta -0.124 Vega 0.072 Open interest 1 Model this put
3	1	82.3%	0.223	$3.25		—	-0.794	78.5%	—	0
Call · $120 Last $3.25 Breakeven $123.25 Implied vol 82.3% Delta 0.223 ≈22% ITM Gamma 0.014 Theta -0.135 Vega 0.074 Open interest 3 Model this call Put · $120 In the money Last — Breakeven — Implied vol 78.5% Delta -0.794 ≈79% ITM Gamma 0.015 Theta -0.113 Vega 0.074 Open interest 0 Model this put
6	1	84.8%	0.176	$3.42		—	-0.864	75%	—	0
Call · $125 Last $3.42 Breakeven $128.42 Implied vol 84.8% Delta 0.176 ≈18% ITM Gamma 0.012 Theta -0.12 Vega 0.076 Open interest 6 Model this call Put · $125 In the money Last — Breakeven — Implied vol 75% Delta -0.864 ≈86% ITM Gamma 0.012 Theta -0.081 Vega 0.05 Open interest 0 Model this put
0	—	83.3%	0.129	—		—	-0.881	81.5%	—	0
Call · $130 Last — Breakeven — Implied vol 83.3% Delta 0.129 ≈13% ITM Gamma 0.01 Theta -0.096 Vega 0.052 Open interest 0 Model this call Put · $130 In the money Last — Breakeven — Implied vol 81.5% Delta -0.881 ≈88% ITM Gamma 0.01 Theta -0.079 Vega 0.051 Open interest 0 Model this put
1	1	83.7%	0.094	$1.90		—	-0.932	76.8%	—	0
Call · $135 Last $1.90 Breakeven $136.90 Implied vol 83.7% Delta 0.094 ≈9% ITM Gamma 0.008 Theta -0.077 Vega 0.053 Open interest 1 Model this call Put · $135 In the money Last — Breakeven — Implied vol 76.8% Delta -0.932 ≈93% ITM Gamma 0.007 Theta -0.047 Vega 0.029 Open interest 0 Model this put
0	—	84%	0.07	—		—	-0.937	83.5%	—	0
Call · $140 Last — Breakeven — Implied vol 84% Delta 0.07 ≈7% ITM Gamma 0.006 Theta -0.062 Vega 0.031 Open interest 0 Model this call Put · $140 In the money Last — Breakeven — Implied vol 83.5% Delta -0.937 ≈94% ITM Gamma 0.007 Theta -0.049 Vega 0.029 Open interest 0 Model this put
0	—	84.1%	0.05	—		—	-0.979	74.2%	—	0
Call · $145 Last — Breakeven — Implied vol 84.1% Delta 0.05 ≈5% ITM Gamma 0.005 Theta -0.047 Vega 0.032 Open interest 0 Model this call Put · $145 In the money Last — Breakeven — Implied vol 74.2% Delta -0.979 ≈98% ITM Gamma 0.004 Theta -0.015 Vega 0.012 Open interest 0 Model this put
2	1	90.3%	0.048	$0.05		—	-0.98	79.8%	—	0
Call · $150 Last $0.05 Breakeven $150.05 Implied vol 90.3% Delta 0.048 ≈5% ITM Gamma 0.004 Theta -0.049 Vega 0.032 Open interest 2 Model this call Put · $150 In the money Last — Breakeven — Implied vol 79.8% Delta -0.98 ≈98% ITM Gamma 0.004 Theta -0.016 Vega 0.013 Open interest 0 Model this put
0	—	97.8%	0.049	—		—	-0.981	85.2%	—	0
Call · $155 Last — Breakeven — Implied vol 97.8% Delta 0.049 ≈5% ITM Gamma 0.004 Theta -0.054 Vega 0.033 Open interest 0 Model this call Put · $155 In the money Last — Breakeven — Implied vol 85.2% Delta -0.981 ≈98% ITM Gamma 0.003 Theta -0.016 Vega 0.012 Open interest 0 Model this put
0	—	102.2%	0.043	—		—	-0.982	90.3%	—	0
Call · $160 Last — Breakeven — Implied vol 102.2% Delta 0.043 ≈4% ITM Gamma 0.004 Theta -0.051 Vega 0.033 Open interest 0 Model this call Put · $160 In the money Last — Breakeven — Implied vol 90.3% Delta -0.982 ≈98% ITM Gamma 0.003 Theta -0.017 Vega 0.012 Open interest 0 Model this put
0	—	107.6%	0.042	—		—	-0.983	95.4%	—	0
Call · $165 Last — Breakeven — Implied vol 107.6% Delta 0.042 ≈4% ITM Gamma 0.003 Theta -0.052 Vega 0.017 Open interest 0 Model this call Put · $165 In the money Last — Breakeven — Implied vol 95.4% Delta -0.983 ≈98% ITM Gamma 0.003 Theta -0.017 Vega 0.012 Open interest 0 Model this put
0	—	112.2%	0.04	—		—	-0.983	100.2%	—	0
Call · $170 Last — Breakeven — Implied vol 112.2% Delta 0.04 ≈4% ITM Gamma 0.003 Theta -0.053 Vega 0.017 Open interest 0 Model this call Put · $170 In the money Last — Breakeven — Implied vol 100.2% Delta -0.983 ≈98% ITM Gamma 0.002 Theta -0.017 Vega 0.012 Open interest 0 Model this put
0	—	121.5%	0.045	—		—	-0.984	105%	—	0
Call · $175 Last — Breakeven — Implied vol 121.5% Delta 0.045 ≈5% ITM Gamma 0.003 Theta -0.063 Vega 0.034 Open interest 0 Model this call Put · $175 In the money Last — Breakeven — Implied vol 105% Delta -0.984 ≈98% ITM Gamma 0.002 Theta -0.017 Vega 0.012 Open interest 0 Model this put
0	—	121%	0.038	—		—	-0.984	109.6%	—	0
Call · $180 Last — Breakeven — Implied vol 121% Delta 0.038 ≈4% ITM Gamma 0.003 Theta -0.054 Vega 0.017 Open interest 0 Model this call Put · $180 In the money Last — Breakeven — Implied vol 109.6% Delta -0.984 ≈98% ITM Gamma 0.002 Theta -0.017 Vega 0.012 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 716314 CUSIP 384556106 13F (30d) 38 filings 37 filers Visit website Investor relations