GHM · Graham Corp · Options Chain

Track GHM — free

$87.90 +2.41 (+2.82%) At close · Sep 11

Russell 2000 member Rebalance outlook locked

Market Cap

$1.03B

11.74M

Options Chain

Underlying $87.90 · at close Sep 11, 2026 Options Calculator

Pull option chains with greeks and open interest through the options chain API or MCP →

Positioning

Sep 18, 2026 · 6 days to expiry · 58 contracts · mixed daily-bar sessions · Feb 5, 2026–Sep 11, 2026; 32 unknown

Put / call OI

1.15

Balanced positioning

Open interest

133

as of Sep 10, 2026

Volume

—

dated and unknown daily-bar sessions

Max pain

$85.00

$2.90 below spot

ATM implied vol

55.3%

market's expected move

Open interest by strike · near the money

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

Sep 18 6d Oct 16 34d Dec 18 97d Mar 19 188d

Calls								Puts
OI	Vol	IV	Δ	Bid	Ask	Last	Strike	Last	Bid	Ask	Δ	IV	Vol	OI
—	3	—	—	$45.70	$50.00	$40.00		—	$0.00	$4.80	—	—	—	—
Call · $40 In the money Daily-bar session Mar 13, 2026 Quote as of 2026-09-11 19:59:49.218 UTC Last $40.00 Breakeven $80.00 Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this call Put · $40 Daily-bar session Unknown Quote as of 2026-09-11 19:59:51.754 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
—	—	—	—	$40.70	$45.00	—		—	$0.00	$4.80	—	—	—	—
Call · $45 In the money Daily-bar session Unknown Quote as of 2026-09-11 19:59:48.967 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this call Put · $45 Daily-bar session Unknown Quote as of 2026-09-11 19:59:52.955 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
13	2	—	—	$36.10	$40.00	$28.20		—	$0.00	$4.80	—	—	—	—
Call · $50 In the money Daily-bar session Feb 5, 2026 Quote as of 2026-09-11 19:59:48.967 UTC Last $28.20 Breakeven $78.20 Implied vol — Delta — Gamma — Theta — Vega — Open interest 13 OI effective date Sep 10, 2026 Model this call Put · $50 Daily-bar session Unknown Quote as of 2026-09-11 13:34:26.871 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
—	1	—	—	$30.70	$35.00	$32.00		$0.05	$0.00	$4.80	—	—	12	11
Call · $55 In the money Daily-bar session Feb 6, 2026 Quote as of 2026-09-11 19:59:48.967 UTC Last $32.00 Breakeven $87.00 Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this call Put · $55 Daily-bar session Aug 14, 2026 Quote as of 2026-09-11 19:59:44.450 UTC Last $0.05 Breakeven $54.95 Implied vol — Delta — Gamma — Theta — Vega — Open interest 11 OI effective date Sep 10, 2026 Model this put
—	—	—	—	$25.90	$30.00	—		$0.25	$0.00	$4.80	—	—	1	1
Call · $60 In the money Daily-bar session Unknown Quote as of 2026-09-11 19:59:48.967 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this call Put · $60 Daily-bar session Aug 31, 2026 Quote as of 2026-09-11 13:34:26.871 UTC Last $0.25 Breakeven $59.75 Implied vol — Delta — Gamma — Theta — Vega — Open interest 1 OI effective date Sep 10, 2026 Model this put
3	3	—	—	$21.10	$25.00	$45.44		—	$0.00	$4.80	—	—	—	—
Call · $65 In the money Daily-bar session Jun 18, 2026 Quote as of 2026-09-11 19:59:44.508 UTC Last $45.44 Breakeven $110.44 Implied vol — Delta — Gamma — Theta — Vega — Open interest 3 OI effective date Sep 10, 2026 Model this call Put · $65 Daily-bar session Unknown Quote as of 2026-09-11 13:34:26.871 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
—	2	65.5%	0.997	$15.90	$20.00	$18.94		$0.50	$0.00	$4.80	—	—	1	12
Call · $70 In the money Daily-bar session Mar 12, 2026 Quote as of 2026-09-11 19:59:44.467 UTC Last $18.94 Breakeven $88.94 Implied vol 65.5% Delta 0.997 ≈100% ITM Gamma 0.001 Theta -0.013 Vega 0.001 Open interest — OI effective date — Model this call Put · $70 Daily-bar session Sep 3, 2026 Quote as of 2026-09-11 19:59:44.450 UTC Last $0.50 Breakeven $69.50 Implied vol — Delta — Gamma — Theta — Vega — Open interest 12 OI effective date Sep 10, 2026 Model this put
—	2	74.5%	0.957	$11.20	$15.00	$11.60		—	$0.00	$4.80	—	—	—	—
Call · $75 In the money Daily-bar session Mar 30, 2026 Quote as of 2026-09-11 19:59:44.467 UTC Last $11.60 Breakeven $86.60 Implied vol 74.5% Delta 0.957 ≈96% ITM Gamma 0.011 Theta -0.072 Vega 0.01 Open interest — OI effective date — Model this call Put · $75 Daily-bar session Unknown Quote as of 2026-09-11 13:34:26.871 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
2	1	69.5%	0.866	$6.50	$10.50	$43.75		$2.60	$0.00	$4.80	—	—	2	17
Call · $80 In the money Daily-bar session Jun 26, 2026 Quote as of 2026-09-11 19:59:50.217 UTC Last $43.75 Breakeven $123.75 Implied vol 69.5% Delta 0.866 ≈87% ITM Gamma 0.028 Theta -0.148 Vega 0.024 Open interest 2 OI effective date Sep 10, 2026 Model this call Put · $80 Daily-bar session Sep 1, 2026 Quote as of 2026-09-11 19:59:44.451 UTC Last $2.60 Breakeven $77.40 Implied vol — Delta — Gamma — Theta — Vega — Open interest 17 OI effective date Sep 10, 2026 Model this put
4	4	66.6%	0.671	$2.80	$6.50	$31.18		$2.40	$0.35	$4.90	-0.361	88.9%	5	16
Call · $85 In the money Daily-bar session Jun 16, 2026 Quote as of 2026-09-11 19:59:50.216 UTC Last $31.18 Breakeven $116.18 Implied vol 66.6% Delta 0.671 ≈67% ITM Gamma 0.048 Theta -0.232 Vega 0.041 Open interest 4 OI effective date Sep 10, 2026 Model this call Put · $85 Daily-bar session Sep 9, 2026 Quote as of 2026-09-11 19:59:44.453 UTC Last $2.40 Breakeven $82.60 Implied vol 88.9% Delta -0.361 ≈36% ITM Gamma 0.037 Theta -0.309 Vega 0.042 Open interest 16 OI effective date Sep 10, 2026 Model this put
Underlying $87.90
17	2	47.7%	0.365	$0.05	$2.55	$1.15		$3.10	$3.00	$5.00	-0.597	63%	2	7
Call · $90 Daily-bar session Sep 11, 2026 Quote as of 2026-09-11 19:59:58.697 UTC Last $1.15 Breakeven $91.15 Implied vol 47.7% Delta 0.365 ≈36% ITM Gamma 0.07 Theta -0.172 Vega 0.042 Open interest 17 OI effective date Sep 10, 2026 Model this call Put · $90 In the money Daily-bar session Sep 8, 2026 Quote as of 2026-09-11 19:59:59.786 UTC Last $3.10 Breakeven $86.90 Implied vol 63% Delta -0.597 ≈60% ITM Gamma 0.055 Theta -0.223 Vega 0.044 Open interest 7 OI effective date Sep 10, 2026 Model this put
—	1	—	—	$0.00	$4.80	$14.40		$5.00	$5.50	$9.30	-0.872	51.4%	1	1
Call · $95 Daily-bar session May 18, 2026 Quote as of 2026-09-11 19:59:44.450 UTC Last $14.40 Breakeven $109.40 Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this call Put · $95 In the money Daily-bar session Aug 25, 2026 Quote as of 2026-09-11 19:59:59.468 UTC Last $5.00 Breakeven $90.00 Implied vol 51.4% Delta -0.872 ≈87% ITM Gamma 0.036 Theta -0.092 Vega 0.024 Open interest 1 OI effective date Sep 10, 2026 Model this put
12	2	—	—	$0.00	$0.90	$2.65		$3.07	$10.50	$14.20	-0.913	71.4%	1	1
Call · $100 Daily-bar session Aug 27, 2026 Quote as of 2026-09-11 19:59:44.418 UTC Last $2.65 Breakeven $102.65 Implied vol — Delta — Gamma — Theta — Vega — Open interest 12 OI effective date Sep 10, 2026 Model this call Put · $100 In the money Daily-bar session Aug 11, 2026 Quote as of 2026-09-11 19:59:55.950 UTC Last $3.07 Breakeven $96.93 Implied vol 71.4% Delta -0.913 ≈91% ITM Gamma 0.02 Theta -0.097 Vega 0.018 Open interest 1 OI effective date Sep 10, 2026 Model this put
2	2	—	—	$0.00	$4.80	$3.23		$17.05	$15.00	$19.00	—	—	3	5
Call · $105 Daily-bar session Aug 21, 2026 Quote as of 2026-09-11 13:34:26.871 UTC Last $3.23 Breakeven $108.23 Implied vol — Delta — Gamma — Theta — Vega — Open interest 2 OI effective date Sep 10, 2026 Model this call Put · $105 In the money Daily-bar session Aug 28, 2026 Quote as of 2026-09-11 19:59:49.721 UTC Last $17.05 Breakeven $87.95 Implied vol — Delta — Gamma — Theta — Vega — Open interest 5 OI effective date Sep 10, 2026 Model this put
5	1	—	—	$0.00	$4.80	$0.05		—	$20.00	$24.20	-0.98	83.2%	—	—
Call · $110 Daily-bar session Sep 9, 2026 Quote as of 2026-09-11 13:34:26.871 UTC Last $0.05 Breakeven $110.05 Implied vol — Delta — Gamma — Theta — Vega — Open interest 5 OI effective date Sep 10, 2026 Model this call Put · $110 In the money Daily-bar session Unknown Quote as of 2026-09-11 19:59:49.721 UTC Last — Breakeven — Implied vol 83.2% Delta -0.98 ≈98% ITM Gamma 0.005 Theta -0.027 Vega 0.006 Open interest — OI effective date — Model this put
1	1	—	—	$0.00	$4.80	$0.10		—	$25.00	$29.20	—	—	—	—
Call · $115 Daily-bar session Sep 1, 2026 Quote as of 2026-09-11 13:34:26.871 UTC Last $0.10 Breakeven $115.10 Implied vol — Delta — Gamma — Theta — Vega — Open interest 1 OI effective date Sep 10, 2026 Model this call Put · $115 In the money Daily-bar session Unknown Quote as of 2026-09-11 19:59:49.721 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
1	1	—	—	$0.00	$4.80	$5.10		—	$30.00	$34.20	—	—	—	—
Call · $120 Daily-bar session Aug 4, 2026 Quote as of 2026-09-11 13:34:26.871 UTC Last $5.10 Breakeven $125.10 Implied vol — Delta — Gamma — Theta — Vega — Open interest 1 OI effective date Sep 10, 2026 Model this call Put · $120 In the money Daily-bar session Unknown Quote as of 2026-09-11 19:59:49.721 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
1	1	—	—	$0.00	$4.80	$0.05		—	$35.00	$39.20	—	—	—	—
Call · $125 Daily-bar session Aug 26, 2026 Quote as of 2026-09-11 13:34:26.871 UTC Last $0.05 Breakeven $125.05 Implied vol — Delta — Gamma — Theta — Vega — Open interest 1 OI effective date Sep 10, 2026 Model this call Put · $125 In the money Daily-bar session Unknown Quote as of 2026-09-11 19:59:49.721 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
1	1	—	—	$0.00	$4.80	$6.50		—	$40.00	$44.20	—	—	—	—
Call · $130 Daily-bar session Jun 3, 2026 Quote as of 2026-09-11 13:34:26.871 UTC Last $6.50 Breakeven $136.50 Implied vol — Delta — Gamma — Theta — Vega — Open interest 1 OI effective date Sep 10, 2026 Model this call Put · $130 In the money Daily-bar session Unknown Quote as of 2026-09-11 19:59:49.721 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
—	—	—	—	$0.00	$4.80	—		—	$45.00	$49.20	—	—	—	—
Call · $135 Daily-bar session Unknown Quote as of 2026-09-11 19:59:44.450 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this call Put · $135 In the money Daily-bar session Unknown Quote as of 2026-09-11 19:59:49.721 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
—	—	—	—	$0.00	$4.80	—		—	$50.00	$53.90	—	—	—	—
Call · $140 Daily-bar session Unknown Quote as of 2026-09-11 19:59:51.754 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this call Put · $140 In the money Daily-bar session Unknown Quote as of 2026-09-11 19:59:49.721 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
—	—	—	—	$0.00	$4.80	—		—	$55.00	$59.20	—	—	—	—
Call · $145 Daily-bar session Unknown Quote as of 2026-09-11 19:59:44.450 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this call Put · $145 In the money Daily-bar session Unknown Quote as of 2026-09-11 19:59:49.721 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
—	—	—	—	$0.00	$4.80	—		—	$60.00	$64.20	—	—	—	—
Call · $150 Daily-bar session Unknown Quote as of 2026-09-11 19:59:47.567 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this call Put · $150 In the money Daily-bar session Unknown Quote as of 2026-09-11 19:59:49.721 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
—	—	—	—	$0.00	$4.80	—		—	$65.00	$69.20	—	—	—	—
Call · $155 Daily-bar session Unknown Quote as of 2026-09-11 19:59:51.754 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this call Put · $155 In the money Daily-bar session Unknown Quote as of 2026-09-11 19:59:49.721 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
—	—	—	—	$0.00	$4.80	—		—	$70.00	$74.20	—	—	—	—
Call · $160 Daily-bar session Unknown Quote as of 2026-09-11 19:59:51.754 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this call Put · $160 In the money Daily-bar session Unknown Quote as of 2026-09-11 19:59:49.721 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
—	—	—	—	$0.00	$4.80	—		—	$75.00	$78.90	—	—	—	—
Call · $165 Daily-bar session Unknown Quote as of 2026-09-11 19:59:48.348 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this call Put · $165 In the money Daily-bar session Unknown Quote as of 2026-09-11 19:59:49.721 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
—	—	—	—	$0.00	$4.80	—		—	$80.00	$83.90	—	—	—	—
Call · $170 Daily-bar session Unknown Quote as of 2026-09-11 19:59:51.754 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this call Put · $170 In the money Daily-bar session Unknown Quote as of 2026-09-11 19:59:49.721 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
—	—	—	—	$0.00	$4.80	—		—	$85.00	$89.20	—	—	—	—
Call · $175 Daily-bar session Unknown Quote as of 2026-09-11 19:59:47.567 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this call Put · $175 In the money Daily-bar session Unknown Quote as of 2026-09-11 19:59:49.721 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
—	—	—	—	$0.00	$4.80	—		—	$90.00	$94.20	—	—	—	—
Call · $180 Daily-bar session Unknown Quote as of 2026-09-11 19:59:51.754 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this call Put · $180 In the money Daily-bar session Unknown Quote as of 2026-09-11 19:59:49.721 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put

About this data

Each contract's last price, day range and volume belong to the daily-bar session shown in its details; unknown means the source omitted that timestamp. Open interest has its own effective date shown separately; implied volatility and greeks are model values computed when fetched. This chain has mixed daily-bar sessions · Feb 5, 2026–Sep 11, 2026; 32 unknown. Positioning totals are shown only when every returned open-interest value has the same known effective date. Bid and ask are real-time consolidated OPRA readings.

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 23 strikes around the money are shown by default — switch to "All 29" for the wings. 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) 89 filings 89 filers Visit website Investor relations