FSTR · Foster L B Co

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$42.54 -0.17 (-0.40%) At close · Jul 24

Market Cap

$443.45M

10.46M

Options Chain

15-min delayed Underlying $42.54 · today Options Calculator

Positioning

Aug 21, 2026 · 26 days to expiry · 26 contracts

Put / call OI

0.24

Call-heavy positioning

Open interest

contracts outstanding

Volume

traded today

Max pain

$15.00

$27.54 below spot

ATM implied vol

57.6%

market's expected move

Open interest by strike

Calls Puts

17.5

22.5

Chain

Click any strike for greeks, breakeven and the calculator

Expiry

Aug 21 26d Sep 18 54d Nov 20 117d Feb 19 208d

Calls						Puts
OI	Vol	IV	Δ	Last	Strike	Last	Δ	IV	Vol	OI
21	21	328.8%	0.948	$29.01		$2.53	—	—	1	2
Call · $15 In the money Last $29.01 Breakeven $44.01 Implied vol 328.8% Delta 0.948 ≈95% ITM Gamma 0.003 Theta -0.078 Vega 0.011 Open interest 21 Model this call Put · $15 Last $2.53 Breakeven $12.47 Implied vol — Delta — Gamma — Theta — Vega — Open interest 2 Model this put
0	—	290%	0.937	—		—	—	—	—	0
Call · $17.5 In the money Last — Breakeven — Implied vol 290% Delta 0.937 ≈94% ITM Gamma 0.004 Theta -0.08 Vega 0.012 Open interest 0 Model this call Put · $17.5 Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put
0	—	253.2%	0.927	—		$2.29	—	—	2	2
Call · $20 In the money Last — Breakeven — Implied vol 253.2% Delta 0.927 ≈93% ITM Gamma 0.005 Theta -0.079 Vega 0.013 Open interest 0 Model this call Put · $20 Last $2.29 Breakeven $17.71 Implied vol — Delta — Gamma — Theta — Vega — Open interest 2 Model this put
0	—	223.6%	0.912	—		—	-0.047	162.8%	—	0
Call · $22.5 In the money Last — Breakeven — Implied vol 223.6% Delta 0.912 ≈91% ITM Gamma 0.006 Theta -0.079 Vega 0.021 Open interest 0 Model this call Put · $22.5 Last — Breakeven — Implied vol 162.8% Delta -0.047 ≈5% ITM Gamma 0.005 Theta -0.035 Vega 0.014 Open interest 0 Model this put
0	—	173.3%	0.915	—		$15.30	-0.058	142.2%	10	1
Call · $25 In the money Last — Breakeven — Implied vol 173.3% Delta 0.915 ≈91% ITM Gamma 0.008 Theta -0.061 Vega 0.015 Open interest 0 Model this call Put · $25 Last $15.30 Breakeven $9.70 Implied vol 142.2% Delta -0.058 ≈6% ITM Gamma 0.007 Theta -0.036 Vega 0.015 Open interest 1 Model this put
5	5	123.6%	0.884	$12.70		$11.50	-0.076	97.6%	10	1
Call · $30 In the money Last $12.70 Breakeven $42.70 Implied vol 123.6% Delta 0.884 ≈88% ITM Gamma 0.014 Theta -0.055 Vega 0.025 Open interest 5 Model this call Put · $30 Last $11.50 Breakeven $18.50 Implied vol 97.6% Delta -0.076 ≈8% ITM Gamma 0.013 Theta -0.03 Vega 0.016 Open interest 1 Model this put
1	1	98.2%	0.8	$0.90		$2.53	-0.122	64.6%	1	2
Call · $35 In the money Last $0.90 Breakeven $35.90 Implied vol 98.2% Delta 0.8 ≈80% ITM Gamma 0.026 Theta -0.063 Vega 0.035 Open interest 1 Model this call Put · $35 Last $2.53 Breakeven $32.47 Implied vol 64.6% Delta -0.122 ≈12% ITM Gamma 0.028 Theta -0.028 Vega 0.027 Open interest 2 Model this put
10	10	76.2%	0.639	$14.00		$12.10	-0.331	52.3%	1	0
Call · $40 In the money Last $14.00 Breakeven $54.00 Implied vol 76.2% Delta 0.639 ≈64% ITM Gamma 0.044 Theta -0.064 Vega 0.043 Open interest 10 Model this call Put · $40 Last $12.10 Breakeven $27.90 Implied vol 52.3% Delta -0.331 ≈33% ITM Gamma 0.063 Theta -0.04 Vega 0.043 Open interest 0 Model this put
Underlying $42.54
8	2	54.5%	0.351	$1.69		$7.50	-0.632	60.7%	2	2
Call · $45 Last $1.69 Breakeven $46.69 Implied vol 54.5% Delta 0.351 ≈35% ITM Gamma 0.061 Theta -0.045 Vega 0.04 Open interest 8 Model this call Put · $45 In the money Last $7.50 Breakeven $37.50 Implied vol 60.7% Delta -0.632 ≈63% ITM Gamma 0.057 Theta -0.048 Vega 0.04 Open interest 2 Model this put
0	—	114.3%	0.342	—		$9.81	—	—	1	1
Call · $50 Last — Breakeven — Implied vol 114.3% Delta 0.342 ≈34% ITM Gamma 0.029 Theta -0.092 Vega 0.042 Open interest 0 Model this call Put · $50 In the money Last $9.81 Breakeven $40.19 Implied vol — Delta — Gamma — Theta — Vega — Open interest 1 Model this put
0	—	—	—	—		—	—	—	—	0
Call · $55 Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this call Put · $55 In the money Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put
0	—	—	—	—		—	—	—	—	0
Call · $60 Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this call Put · $60 In the money Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put
0	—	—	—	—		—	—	—	—	0
Call · $65 Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this call Put · $65 In the money Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — 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 352825 CUSIP 350060109 13F (30d) 16 filings 16 filers Visit website Investor relations