FSTR · Foster L B Co · Options Chain

Track FSTR — free

$37.43 -0.44 (-1.16%)

Russell 2000 member Rebalance outlook locked

Market Cap

$399.86M

10.52M

Options Chain

Underlying $37.43 · today Options Calculator

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

Positioning

Sep 18, 2026 · 8 days to expiry · 18 contracts · mixed daily-bar sessions · Aug 11, 2026–Aug 20, 2026; 16 unknown

Put / call OI

1.50

Put-heavy positioning

Open interest

as of Sep 8, 2026

Volume

—

dated and unknown daily-bar sessions

Max pain

$40.00

$2.57 above spot

ATM implied vol

58.8%

market's expected move

Open interest by strike

Calls Puts

22.5

Chain

Click any strike for greeks, breakeven and the calculator

Expiry

Sep 18 8d Oct 16 36d Nov 20 71d Feb 19 162d

Calls								Puts
OI	Vol	IV	Δ	Bid	Ask	Last	Strike	Last	Bid	Ask	Δ	IV	Vol	OI
—	—	—	—	$13.40	$17.50	—		—	$0.00	$4.60	—	—	—	—
Call · $22.5 In the money Daily-bar session Unknown Quote as of 2026-09-10 13:40:30.279 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this call Put · $22.5 Daily-bar session Unknown Quote as of 2026-09-10 13:34:18.191 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
—	—	—	—	$10.90	$15.00	—		—	$0.00	$4.60	—	—	—	3
Call · $25 In the money Daily-bar session Unknown Quote as of 2026-09-10 13:38:04.034 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this call Put · $25 Daily-bar session Unknown Quote as of 2026-09-10 13:34:18.191 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 3 OI effective date Sep 8, 2026 Model this put
—	—	—	—	$5.90	$10.00	—		$1.55	$0.00	$4.60	—	—	3	3
Call · $30 In the money Daily-bar session Unknown Quote as of 2026-09-10 13:40:13.980 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this call Put · $30 Daily-bar session Aug 20, 2026 Quote as of 2026-09-10 13:34:18.191 UTC Last $1.55 Breakeven $28.45 Implied vol — Delta — Gamma — Theta — Vega — Open interest 3 OI effective date Sep 8, 2026 Model this put
—	—	58.8%	0.795	$0.70	$5.00	—		—	$0.00	$4.80	—	—	—	—
Call · $35 In the money Daily-bar session Unknown Quote as of 2026-09-10 13:34:50.012 UTC Last — Breakeven — Implied vol 58.8% Delta 0.795 ≈80% ITM Gamma 0.087 Theta -0.061 Vega 0.016 Open interest — OI effective date — Model this call Put · $35 Daily-bar session Unknown Quote as of 2026-09-10 13:34:09.113 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
Underlying $37.43
2	2	—	—	$0.00	$0.80	$1.40		—	$0.50	$5.00	-0.833	44.4%	—	—
Call · $40 Daily-bar session Aug 11, 2026 Quote as of 2026-09-10 13:38:48.258 UTC Last $1.40 Breakeven $41.40 Implied vol — Delta — Gamma — Theta — Vega — Open interest 2 OI effective date Sep 8, 2026 Model this call Put · $40 In the money Daily-bar session Unknown Quote as of 2026-09-10 13:40:34.214 UTC Last — Breakeven — Implied vol 44.4% Delta -0.833 ≈83% ITM Gamma 0.102 Theta -0.035 Vega 0.014 Open interest — OI effective date — Model this put
—	—	—	—	$0.00	$4.60	—		—	$5.00	$9.20	—	—	—	—
Call · $45 Daily-bar session Unknown Quote as of 2026-09-10 13:34:18.191 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this call Put · $45 In the money Daily-bar session Unknown Quote as of 2026-09-10 13:35:10.341 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
—	—	—	—	$0.00	$4.60	—		—	$10.00	$14.20	—	—	—	—
Call · $50 Daily-bar session Unknown Quote as of 2026-09-10 13:34:18.191 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this call Put · $50 In the money Daily-bar session Unknown Quote as of 2026-09-10 13:38:04.033 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
—	—	—	—	$0.00	$4.60	—		—	$15.00	$19.20	—	—	—	—
Call · $55 Daily-bar session Unknown Quote as of 2026-09-10 13:34:50.199 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this call Put · $55 In the money Daily-bar session Unknown Quote as of 2026-09-10 13:40:45.777 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
2	—	—	—	$0.00	$4.60	—		—	$20.00	$24.10	—	—	—	—
Call · $60 Daily-bar session Unknown Quote as of 2026-09-10 13:34:50.189 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 2 OI effective date Sep 8, 2026 Model this call Put · $60 In the money Daily-bar session Unknown Quote as of 2026-09-10 13:40:55.840 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 · Aug 11, 2026–Aug 20, 2026; 16 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 352825 CUSIP 350060109 13F (30d) 90 filings 90 filers Visit website Investor relations