FORM · Formfactor Inc · Options Chain

Track FORM — free

$114.95 +2.83 (+2.52%) At close · Sep 11

S&P 600 member Russell 1000 member Rebalance outlook locked

Market Cap

$8.98B

78.12M

Options Chain

Underlying $114.95 · 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 · 5 days to expiry · 52 contracts · mixed daily-bar sessions · Jul 20, 2026–Sep 11, 2026; 9 unknown

Put / call OI

0.86

Balanced positioning

Open interest

12,653

as of Sep 10, 2026

Volume

—

dated and unknown daily-bar sessions

Max pain

$110.00

$4.95 below spot

ATM implied vol

81.2%

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

Chain

Click any strike for greeks, breakeven and the calculator

Expiry

Sep 18 5d Oct 16 33d Jan 15 124d Apr 16 215d Jan 21 495d Jan 19 859d

Calls								Puts
OI	Vol	IV	Δ	Bid	Ask	Last	Strike	Last	Bid	Ask	Δ	IV	Vol	OI
—	—	—	—	$67.90	$71.80	—		$0.20	$0.00	$1.70	—	—	35	35
Call · $45 In the money Daily-bar session Unknown Quote as of 2026-09-11 19:56:22.972 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this call Put · $45 Daily-bar session Aug 5, 2026 Quote as of 2026-09-11 19:59:50.892 UTC Last $0.20 Breakeven $44.80 Implied vol — Delta — Gamma — Theta — Vega — Open interest 35 OI effective date Sep 10, 2026 Model this put
—	—	—	—	$62.90	$66.80	—		$0.10	$0.00	$1.70	—	—	1	358
Call · $50 In the money Daily-bar session Unknown Quote as of 2026-09-11 19:56:22.972 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this call Put · $50 Daily-bar session Aug 12, 2026 Quote as of 2026-09-11 19:59:50.846 UTC Last $0.10 Breakeven $49.90 Implied vol — Delta — Gamma — Theta — Vega — Open interest 358 OI effective date Sep 10, 2026 Model this put
—	—	—	—	$57.90	$61.80	—		$0.60	$0.00	$1.70	—	—	5	14
Call · $55 In the money Daily-bar session Unknown Quote as of 2026-09-11 19:59:05.796 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this call Put · $55 Daily-bar session Aug 4, 2026 Quote as of 2026-09-11 19:59:50.846 UTC Last $0.60 Breakeven $54.40 Implied vol — Delta — Gamma — Theta — Vega — Open interest 14 OI effective date Sep 10, 2026 Model this put
—	—	—	—	$53.00	$56.80	—		$0.40	$0.00	$0.75	—	—	1	10
Call · $60 In the money Daily-bar session Unknown Quote as of 2026-09-11 19:57:47.836 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this call Put · $60 Daily-bar session Aug 18, 2026 Quote as of 2026-09-11 19:50:02.123 UTC Last $0.40 Breakeven $59.60 Implied vol — Delta — Gamma — Theta — Vega — Open interest 10 OI effective date Sep 10, 2026 Model this put
—	—	—	—	$48.00	$51.80	—		$0.10	$0.00	$0.10	—	—	1	424
Call · $65 In the money Daily-bar session Unknown Quote as of 2026-09-11 19:57:47.859 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this call Put · $65 Daily-bar session Aug 31, 2026 Quote as of 2026-09-11 18:49:08.553 UTC Last $0.10 Breakeven $64.90 Implied vol — Delta — Gamma — Theta — Vega — Open interest 424 OI effective date Sep 10, 2026 Model this put
10	10	—	—	$43.00	$46.80	$55.00		$0.14	$0.00	$0.95	—	—	1	141
Call · $70 In the money Daily-bar session Aug 18, 2026 Quote as of 2026-09-11 19:59:44.647 UTC Last $55.00 Breakeven $125.00 Implied vol — Delta — Gamma — Theta — Vega — Open interest 10 OI effective date Sep 10, 2026 Model this call Put · $70 Daily-bar session Aug 26, 2026 Quote as of 2026-09-11 19:57:59.100 UTC Last $0.14 Breakeven $69.86 Implied vol — Delta — Gamma — Theta — Vega — Open interest 141 OI effective date Sep 10, 2026 Model this put
—	—	—	—	$38.00	$41.80	—		$0.25	$0.00	$0.75	—	—	14	2.2k
Call · $75 In the money Daily-bar session Unknown Quote as of 2026-09-11 19:59:51.236 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this call Put · $75 Daily-bar session Sep 2, 2026 Quote as of 2026-09-11 19:57:59.353 UTC Last $0.25 Breakeven $74.75 Implied vol — Delta — Gamma — Theta — Vega — Open interest 2.2k OI effective date Sep 10, 2026 Model this put
3	3	—	—	$33.00	$36.10	$16.20		$0.14	$0.00	$0.55	—	—	10	78
Call · $80 In the money Daily-bar session Jul 29, 2026 Quote as of 2026-09-11 19:58:49.674 UTC Last $16.20 Breakeven $96.20 Implied vol — Delta — Gamma — Theta — Vega — Open interest 3 OI effective date Sep 10, 2026 Model this call Put · $80 Daily-bar session Sep 11, 2026 Quote as of 2026-09-11 19:57:59.984 UTC Last $0.14 Breakeven $79.86 Implied vol — Delta — Gamma — Theta — Vega — Open interest 78 OI effective date Sep 10, 2026 Model this put
12	7	—	—	$28.00	$31.90	$27.86		$0.10	$0.00	$0.65	—	—	15	196
Call · $85 In the money Daily-bar session Jul 30, 2026 Quote as of 2026-09-11 19:59:37.425 UTC Last $27.86 Breakeven $112.86 Implied vol — Delta — Gamma — Theta — Vega — Open interest 12 OI effective date Sep 10, 2026 Model this call Put · $85 Daily-bar session Sep 9, 2026 Quote as of 2026-09-11 19:55:45.465 UTC Last $0.10 Breakeven $84.90 Implied vol — Delta — Gamma — Theta — Vega — Open interest 196 OI effective date Sep 10, 2026 Model this put
12	10	—	—	$23.00	$26.90	$15.60		$0.15	$0.05	$0.15	—	—	2	593
Call · $90 In the money Daily-bar session Aug 28, 2026 Quote as of 2026-09-11 19:59:57.897 UTC Last $15.60 Breakeven $105.60 Implied vol — Delta — Gamma — Theta — Vega — Open interest 12 OI effective date Sep 10, 2026 Model this call Put · $90 Daily-bar session Sep 11, 2026 Quote as of 2026-09-11 19:55:00.258 UTC Last $0.15 Breakeven $89.85 Implied vol — Delta — Gamma — Theta — Vega — Open interest 593 OI effective date Sep 10, 2026 Model this put
51	1	116.9%	0.925	$18.20	$22.00	$13.73		$0.25	$0.10	$0.25	-0.035	90.9%	26	317
Call · $95 In the money Daily-bar session Sep 8, 2026 Quote as of 2026-09-11 19:59:44.871 UTC Last $13.73 Breakeven $108.73 Implied vol 116.9% Delta 0.925 ≈92% ITM Gamma 0.009 Theta -0.232 Vega 0.019 Open interest 51 OI effective date Sep 10, 2026 Model this call Put · $95 Daily-bar session Sep 11, 2026 Quote as of 2026-09-11 19:59:26.400 UTC Last $0.25 Breakeven $94.75 Implied vol 90.9% Delta -0.035 ≈3% ITM Gamma 0.006 Theta -0.094 Vega 0.01 Open interest 317 OI effective date Sep 10, 2026 Model this put
221	1	89.3%	0.912	$13.70	$16.40	$10.10		$0.44	$0.00	$1.30	—	—	15	125
Call · $100 In the money Daily-bar session Sep 8, 2026 Quote as of 2026-09-11 19:59:05.950 UTC Last $10.10 Breakeven $110.10 Implied vol 89.3% Delta 0.912 ≈91% ITM Gamma 0.013 Theta -0.201 Vega 0.021 Open interest 221 OI effective date Sep 10, 2026 Model this call Put · $100 Daily-bar session Sep 11, 2026 Quote as of 2026-09-11 19:59:41.115 UTC Last $0.44 Breakeven $99.56 Implied vol — Delta — Gamma — Theta — Vega — Open interest 125 OI effective date Sep 10, 2026 Model this put
157	1	94.9%	0.799	$9.60	$12.50	$12.00		$0.90	$0.65	$1.20	-0.16	78.5%	86	232
Call · $105 In the money Daily-bar session Sep 11, 2026 Quote as of 2026-09-11 19:59:59.820 UTC Last $12.00 Breakeven $117.00 Implied vol 94.9% Delta 0.799 ≈80% ITM Gamma 0.022 Theta -0.365 Vega 0.038 Open interest 157 OI effective date Sep 10, 2026 Model this call Put · $105 Daily-bar session Sep 11, 2026 Quote as of 2026-09-11 19:59:52.821 UTC Last $0.90 Breakeven $104.10 Implied vol 78.5% Delta -0.16 ≈16% ITM Gamma 0.023 Theta -0.254 Vega 0.033 Open interest 232 OI effective date Sep 10, 2026 Model this put
559	4	81.1%	0.683	$6.30	$7.50	$7.33		$2.65	$1.50	$3.10	-0.316	79.9%	1	174
Call · $110 In the money Daily-bar session Sep 11, 2026 Quote as of 2026-09-11 19:59:52.200 UTC Last $7.33 Breakeven $117.33 Implied vol 81.1% Delta 0.683 ≈68% ITM Gamma 0.033 Theta -0.395 Vega 0.048 Open interest 559 OI effective date Sep 10, 2026 Model this call Put · $110 Daily-bar session Sep 11, 2026 Quote as of 2026-09-11 19:59:47.231 UTC Last $2.65 Breakeven $107.35 Implied vol 79.9% Delta -0.316 ≈32% ITM Gamma 0.033 Theta -0.377 Vega 0.048 Open interest 174 OI effective date Sep 10, 2026 Model this put
Underlying $114.95
194	11	86.3%	0.505	$3.00	$5.80	$4.30		$4.27	$3.20	$5.40	-0.5	76%	6	431
Call · $115 Daily-bar session Sep 11, 2026 Quote as of 2026-09-11 19:59:30.923 UTC Last $4.30 Breakeven $119.30 Implied vol 86.3% Delta 0.505 ≈50% ITM Gamma 0.035 Theta -0.467 Vega 0.054 Open interest 194 OI effective date Sep 10, 2026 Model this call Put · $115 In the money Daily-bar session Sep 11, 2026 Quote as of 2026-09-11 19:56:23.201 UTC Last $4.27 Breakeven $110.73 Implied vol 76% Delta -0.5 ≈50% ITM Gamma 0.039 Theta -0.4 Vega 0.054 Open interest 431 OI effective date Sep 10, 2026 Model this put
1k	256	87.1%	0.343	$2.15	$2.90	$2.30		$7.56	$6.60	$8.60	-0.675	79.4%	13	299
Call · $120 Daily-bar session Sep 11, 2026 Quote as of 2026-09-11 19:58:19.769 UTC Last $2.30 Breakeven $122.30 Implied vol 87.1% Delta 0.343 ≈34% ITM Gamma 0.032 Theta -0.433 Vega 0.049 Open interest 1k OI effective date Sep 10, 2026 Model this call Put · $120 In the money Daily-bar session Sep 11, 2026 Quote as of 2026-09-11 19:58:55.579 UTC Last $7.56 Breakeven $112.44 Implied vol 79.4% Delta -0.675 ≈68% ITM Gamma 0.034 Theta -0.374 Vega 0.048 Open interest 299 OI effective date Sep 10, 2026 Model this put
153	10	81.8%	0.194	$0.05	$2.20	$1.50		$11.46	$10.20	$12.40	-0.832	74.2%	13	152
Call · $125 Daily-bar session Sep 11, 2026 Quote as of 2026-09-11 19:59:57.620 UTC Last $1.50 Breakeven $126.50 Implied vol 81.8% Delta 0.194 ≈19% ITM Gamma 0.025 Theta -0.303 Vega 0.037 Open interest 153 OI effective date Sep 10, 2026 Model this call Put · $125 In the money Daily-bar session Sep 11, 2026 Quote as of 2026-09-11 19:59:40.763 UTC Last $11.46 Breakeven $113.54 Implied vol 74.2% Delta -0.832 ≈83% ITM Gamma 0.025 Theta -0.238 Vega 0.034 Open interest 152 OI effective date Sep 10, 2026 Model this put
761	35	82.5%	0.104	$0.20	$0.85	$0.62		$30.50	$14.30	$17.00	-0.944	66.5%	1	58
Call · $130 Daily-bar session Sep 11, 2026 Quote as of 2026-09-11 19:56:13.470 UTC Last $0.62 Breakeven $130.62 Implied vol 82.5% Delta 0.104 ≈10% ITM Gamma 0.016 Theta -0.2 Vega 0.024 Open interest 761 OI effective date Sep 10, 2026 Model this call Put · $130 In the money Daily-bar session Sep 4, 2026 Quote as of 2026-09-11 19:59:04.203 UTC Last $30.50 Breakeven $99.50 Implied vol 66.5% Delta -0.944 ≈94% ITM Gamma 0.013 Theta -0.088 Vega 0.015 Open interest 58 OI effective date Sep 10, 2026 Model this put
916	2	92.3%	0.071	$0.10	$0.65	$0.52		$10.66	$19.00	$22.40	-0.945	85.4%	50	—
Call · $135 Daily-bar session Sep 8, 2026 Quote as of 2026-09-11 19:59:41.129 UTC Last $0.52 Breakeven $135.52 Implied vol 92.3% Delta 0.071 ≈7% ITM Gamma 0.011 Theta -0.169 Vega 0.018 Open interest 916 OI effective date Sep 10, 2026 Model this call Put · $135 In the money Daily-bar session Aug 17, 2026 Quote as of 2026-09-11 19:59:33.419 UTC Last $10.66 Breakeven $124.34 Implied vol 85.4% Delta -0.945 ≈94% ITM Gamma 0.01 Theta -0.115 Vega 0.015 Open interest — OI effective date — Model this put
106	2	—	—	$0.00	$0.55	$0.25		$22.10	$23.30	$27.20	—	—	50	—
Call · $140 Daily-bar session Sep 11, 2026 Quote as of 2026-09-11 19:56:23.201 UTC Last $0.25 Breakeven $140.25 Implied vol — Delta — Gamma — Theta — Vega — Open interest 106 OI effective date Sep 10, 2026 Model this call Put · $140 In the money Daily-bar session Aug 18, 2026 Quote as of 2026-09-11 19:58:54.287 UTC Last $22.10 Breakeven $117.90 Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
180	1	—	—	$0.00	$0.75	$0.50		$17.50	$28.30	$32.10	—	—	1	—
Call · $145 Daily-bar session Sep 8, 2026 Quote as of 2026-09-11 19:59:31.762 UTC Last $0.50 Breakeven $145.50 Implied vol — Delta — Gamma — Theta — Vega — Open interest 180 OI effective date Sep 10, 2026 Model this call Put · $145 In the money Daily-bar session Aug 17, 2026 Quote as of 2026-09-11 19:59:53.214 UTC Last $17.50 Breakeven $127.50 Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
1k	1	—	—	$0.00	$0.35	$0.37		$39.20	$33.20	$36.30	—	—	7	—
Call · $150 Daily-bar session Sep 9, 2026 Quote as of 2026-09-11 19:57:59.100 UTC Last $0.37 Breakeven $150.37 Implied vol — Delta — Gamma — Theta — Vega — Open interest 1k OI effective date Sep 10, 2026 Model this call Put · $150 In the money Daily-bar session Aug 6, 2026 Quote as of 2026-09-11 19:58:05.047 UTC Last $39.20 Breakeven $110.80 Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
93	3	—	—	$0.00	$0.75	$0.10		$55.30	$38.20	$42.00	—	—	1	—
Call · $155 Daily-bar session Aug 31, 2026 Quote as of 2026-09-11 19:58:12.345 UTC Last $0.10 Breakeven $155.10 Implied vol — Delta — Gamma — Theta — Vega — Open interest 93 OI effective date Sep 10, 2026 Model this call Put · $155 In the money Daily-bar session Jul 20, 2026 Quote as of 2026-09-11 19:59:42.396 UTC Last $55.30 Breakeven $99.70 Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
74	1	—	—	$0.00	$0.55	$0.35		—	$43.20	$47.00	—	—	—	—
Call · $160 Daily-bar session Sep 8, 2026 Quote as of 2026-09-11 19:57:59.100 UTC Last $0.35 Breakeven $160.35 Implied vol — Delta — Gamma — Theta — Vega — Open interest 74 OI effective date Sep 10, 2026 Model this call Put · $160 In the money Daily-bar session Unknown Quote as of 2026-09-11 19:59:44.644 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
7	2	—	—	$0.00	$0.95	$0.38		—	$48.20	$52.00	—	—	—	—
Call · $165 Daily-bar session Aug 31, 2026 Quote as of 2026-09-11 19:57:59.100 UTC Last $0.38 Breakeven $165.38 Implied vol — Delta — Gamma — Theta — Vega — Open interest 7 OI effective date Sep 10, 2026 Model this call Put · $165 In the money Daily-bar session Unknown Quote as of 2026-09-11 19:59:44.644 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
1.2k	2	—	—	$0.00	$0.05	$0.05		—	$53.20	$57.00	—	—	—	—
Call · $170 Daily-bar session Aug 31, 2026 Quote as of 2026-09-11 19:59:50.892 UTC Last $0.05 Breakeven $170.05 Implied vol — Delta — Gamma — Theta — Vega — Open interest 1.2k OI effective date Sep 10, 2026 Model this call Put · $170 In the money Daily-bar session Unknown Quote as of 2026-09-11 19:59:42.397 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 · Jul 20, 2026–Sep 11, 2026; 9 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. Max pain is the listed strike where the most open interest would expire worthless — a positioning reference, not a forecast.

Key facts CIK 1039399 CUSIP 346375108 13F (30d) 137 filings 136 filers Visit website Investor relations