GRO · Brazil Potash Corp.

Track GRO — free Ask ALVIS about GRO

$2.03 -0.02 (-0.98%) At close · Jul 28

Market Cap

$108.99M

53.69M

Options Chain

15-min delayed Underlying $2.03 · at close Jul 28, 2026 Options Calculator

Positioning

Aug 21, 2026 · 23 days to expiry · 6 contracts

Put / call OI

0.84

Balanced positioning

Open interest

1,153

contracts outstanding

Volume

100

traded today

Max pain

$2.50

$0.47 above spot

ATM implied vol

116.1%

market's expected move

Open interest by strike

Calls Puts

2.5

7.5

Chain

Click any strike for greeks, breakeven and the calculator

Expiry

Aug 21 23d Sep 18 51d Nov 20 114d Feb 19 205d

Calls						Puts
OI	Vol	IV	Δ	Last	Strike	Last	Δ	IV	Vol	OI
Underlying $2.03
591	94	102.6%	0.363	$0.15		$0.40	-0.589	129.5%	1	526
Call · $2.5 Last $0.15 Breakeven $2.65 Implied vol 102.6% Delta 0.363 ≈36% ITM Gamma 0.66 Theta -0.005 Vega 0.002 Open interest 591 Model this call Put · $2.5 In the money Last $0.40 Breakeven $2.10 Implied vol 129.5% Delta -0.589 ≈59% ITM Gamma 0.55 Theta -0.006 Vega 0.002 Open interest 526 Model this put
36	3	314.8%	0.264	$0.05		$2.55	-0.612	406.6%	1	0
Call · $5 Last $0.05 Breakeven $5.05 Implied vol 314.8% Delta 0.264 ≈26% ITM Gamma 0.185 Theta -0.012 Vega 0.002 Open interest 36 Model this call Put · $5 In the money Last $2.55 Breakeven $2.45 Implied vol 406.6% Delta -0.612 ≈61% ITM Gamma 0.169 Theta -0.018 Vega 0.002 Open interest 0 Model this put
0	—	—	—	—		$4.85	-0.689	457.1%	1	0
Call · $7.5 Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this call Put · $7.5 In the money Last $4.85 Breakeven $2.65 Implied vol 457.1% Delta -0.689 ≈69% ITM Gamma 0.138 Theta -0.019 Vega 0.002 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 1472326 CUSIP 10586A108 13F (30d) 5 filings 5 filers Visit website Investor relations