FAST · Fastenal Co

Track FAST — free Ask ALVIS about FAST

$47.02 +0.87 (+1.87%) At close · Jul 24

Market Cap

$53.96B

1.15B

Options Chain

15-min delayed Underlying $47.02 · today Options Calculator

Positioning

Aug 21, 2026 · 26 days to expiry · 32 contracts

Put / call OI

0.47

Call-heavy positioning

Open interest

24,869

contracts outstanding

Volume

371

traded today

Max pain

$45.00

$2.02 below spot

ATM implied vol

24.8%

market's expected move

Open interest by strike

Calls Puts

27.5

32.5

37.5

42.5

47.5

52.5

57.5

Chain

Click any strike for greeks, breakeven and the calculator

Expiry

Aug 21 26d Sep 18 54d Nov 20 117d Dec 18 145d Jan 15 173d Feb 19 208d Mar 19 236d Jun 17 326d Jan 21 544d

Calls						Puts
OI	Vol	IV	Δ	Last	Strike	Last	Δ	IV	Vol	OI
0	—	—	—	—		$0.15	—	—	1	3
Call · $25 In the money Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this call Put · $25 Last $0.15 Breakeven $24.85 Implied vol — Delta — Gamma — Theta — Vega — Open interest 3 Model this put
0	—	—	—	—		$0.30	—	—	1	2
Call · $27.5 In the money Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this call Put · $27.5 Last $0.30 Breakeven $27.20 Implied vol — Delta — Gamma — Theta — Vega — Open interest 2 Model this put
3	1	—	—	$13.90		$0.06	-0.041	105.7%	2	5
Call · $30 In the money Last $13.90 Breakeven $43.90 Implied vol — Delta — Gamma — Theta — Vega — Open interest 3 Model this call Put · $30 Last $0.06 Breakeven $29.94 Implied vol 105.7% Delta -0.041 ≈4% ITM Gamma 0.007 Theta -0.022 Vega 0.01 Open interest 5 Model this put
0	—	—	—	—		$0.05	-0.05	92.7%	2	8
Call · $32.5 In the money Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this call Put · $32.5 Last $0.05 Breakeven $32.45 Implied vol 92.7% Delta -0.05 ≈5% ITM Gamma 0.009 Theta -0.023 Vega 0.011 Open interest 8 Model this put
15	1	—	—	$13.05		$0.15	-0.081	86.5%	11	1.9k
Call · $35 In the money Last $13.05 Breakeven $48.05 Implied vol — Delta — Gamma — Theta — Vega — Open interest 15 Model this call Put · $35 Last $0.15 Breakeven $34.85 Implied vol 86.5% Delta -0.081 ≈8% ITM Gamma 0.014 Theta -0.031 Vega 0.019 Open interest 1.9k Model this put
0	—	—	—	—		$0.08	-0.049	54.2%	1	85
Call · $37.5 In the money Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this call Put · $37.5 Last $0.08 Breakeven $37.42 Implied vol 54.2% Delta -0.049 ≈5% ITM Gamma 0.015 Theta -0.013 Vega 0.011 Open interest 85 Model this put
26	16	—	—	$6.55		$0.12	-0.055	40.1%	5	237
Call · $40 In the money Last $6.55 Breakeven $46.55 Implied vol — Delta — Gamma — Theta — Vega — Open interest 26 Model this call Put · $40 Last $0.12 Breakeven $39.88 Implied vol 40.1% Delta -0.055 ≈6% ITM Gamma 0.022 Theta -0.011 Vega 0.012 Open interest 237 Model this put
187	3	—	—	$4.62		$0.22	-0.108	32.6%	20	4.3k
Call · $42.5 In the money Last $4.62 Breakeven $47.12 Implied vol — Delta — Gamma — Theta — Vega — Open interest 187 Model this call Put · $42.5 Last $0.22 Breakeven $42.28 Implied vol 32.6% Delta -0.108 ≈11% ITM Gamma 0.046 Theta -0.015 Vega 0.021 Open interest 4.3k Model this put
4.1k	29	26.5%	0.755	$2.50		$0.62	-0.252	27.5%	55	1.1k
Call · $45 In the money Last $2.50 Breakeven $47.50 Implied vol 26.5% Delta 0.755 ≈75% ITM Gamma 0.094 Theta -0.021 Vega 0.042 Open interest 4.1k Model this call Put · $45 Last $0.62 Breakeven $44.38 Implied vol 27.5% Delta -0.252 ≈25% ITM Gamma 0.093 Theta -0.021 Vega 0.042 Open interest 1.1k Model this put
Underlying $47.02
1.8k	84	21.9%	0.461	$0.95		$1.59	-0.525	27.8%	1	248
Call · $47.5 Last $0.95 Breakeven $48.45 Implied vol 21.9% Delta 0.461 ≈46% ITM Gamma 0.144 Theta -0.022 Vega 0.05 Open interest 1.8k Model this call Put · $47.5 In the money Last $1.59 Breakeven $45.91 Implied vol 27.8% Delta -0.525 ≈53% ITM Gamma 0.115 Theta -0.026 Vega 0.05 Open interest 248 Model this put
8.7k	76	22.9%	0.177	$0.28		$3.77	-0.735	32.9%	1	77
Call · $50 Last $0.28 Breakeven $50.28 Implied vol 22.9% Delta 0.177 ≈18% ITM Gamma 0.09 Theta -0.015 Vega 0.035 Open interest 8.7k Model this call Put · $50 In the money Last $3.77 Breakeven $46.23 Implied vol 32.9% Delta -0.735 ≈74% ITM Gamma 0.08 Theta -0.025 Vega 0.045 Open interest 77 Model this put
984	10	24.8%	0.056	$0.10		$8.05	-0.82	41.5%	14	4
Call · $52.5 Last $0.10 Breakeven $52.60 Implied vol 24.8% Delta 0.056 ≈6% ITM Gamma 0.036 Theta -0.007 Vega 0.014 Open interest 984 Model this call Put · $52.5 In the money Last $8.05 Breakeven $44.45 Implied vol 41.5% Delta -0.82 ≈82% ITM Gamma 0.051 Theta -0.025 Vega 0.035 Open interest 4 Model this put
399	12	34.9%	0.054	$0.05		$8.50	-0.858	51.2%	1	3
Call · $55 Last $0.05 Breakeven $55.05 Implied vol 34.9% Delta 0.054 ≈5% ITM Gamma 0.025 Theta -0.009 Vega 0.014 Open interest 399 Model this call Put · $55 In the money Last $8.50 Breakeven $46.50 Implied vol 51.2% Delta -0.858 ≈86% ITM Gamma 0.036 Theta -0.027 Vega 0.024 Open interest 3 Model this put
32	3	62.2%	0.134	$0.06		$10.50	-0.875	60.4%	2	2
Call · $57.5 Last $0.06 Breakeven $57.56 Implied vol 62.2% Delta 0.134 ≈13% ITM Gamma 0.028 Theta -0.033 Vega 0.025 Open interest 32 Model this call Put · $57.5 In the money Last $10.50 Breakeven $47.00 Implied vol 60.4% Delta -0.875 ≈88% ITM Gamma 0.028 Theta -0.028 Vega 0.025 Open interest 2 Model this put
23	14	50.2%	0.04	$0.05		$13.60	-0.839	82.9%	1	1
Call · $60 Last $0.05 Breakeven $60.05 Implied vol 50.2% Delta 0.04 ≈4% ITM Gamma 0.014 Theta -0.011 Vega 0.015 Open interest 23 Model this call Put · $60 In the money Last $13.60 Breakeven $46.40 Implied vol 82.9% Delta -0.839 ≈84% ITM Gamma 0.024 Theta -0.047 Vega 0.037 Open interest 1 Model this put
552	3	—	—	$1.10		$19.70	-0.903	85.7%	1	1
Call · $65 Last $1.10 Breakeven $66.10 Implied vol — Delta — Gamma — Theta — Vega — Open interest 552 Model this call Put · $65 In the money Last $19.70 Breakeven $45.30 Implied vol 85.7% Delta -0.903 ≈90% ITM Gamma 0.016 Theta -0.033 Vega 0.026 Open interest 1 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 815556 CUSIP 311900104 13F (30d) 429 filings 412 filers Visit website Investor relations