CRBU · Caribou Biosciences, Inc.

Track CRBU — free Ask ALVIS about CRBU

$1.47 -0.02 (-1.34%) At close · Jul 29

Market Cap

$147.78M

99.18M

Options Chain

15-min delayed Underlying $1.47 · at close Jul 29, 2026 Options Calculator

Positioning

Aug 21, 2026 · 22 days to expiry · 14 contracts

Put / call OI

0.11

Call-heavy positioning

Open interest

194

contracts outstanding

Volume

traded today

Max pain

$1.00

$0.47 below spot

ATM implied vol

215.3%

market's expected move

Open interest by strike

Calls Puts

0.5

1.5

2.5

7.5

Chain

Click any strike for greeks, breakeven and the calculator

Expiry

Aug 21 22d Sep 18 50d Oct 16 78d Jan 15 169d

Calls						Puts
OI	Vol	IV	Δ	Last	Strike	Last	Δ	IV	Vol	OI
3	10	501.9%	0.932	$1.29		—	—	—	—	0
Call · $0.5 In the money Last $1.29 Breakeven $1.79 Implied vol 501.9% Delta 0.932 ≈93% ITM Gamma 0.07 Theta -0.005 Vega 0 Open interest 3 Model this call Put · $0.5 Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put
15	10	281.4%	0.817	$0.47		$0.05	—	—	4	16
Call · $1 In the money Last $0.47 Breakeven $1.47 Implied vol 281.4% Delta 0.817 ≈82% ITM Gamma 0.256 Theta -0.006 Vega 0.001 Open interest 15 Model this call Put · $1 Last $0.05 Breakeven $0.95 Implied vol — Delta — Gamma — Theta — Vega — Open interest 16 Model this put
Underlying $1.47
22	1	304.4%	0.639	$0.75		$0.15	-0.46	126.1%	1	3
Call · $1.5 Last $0.75 Breakeven $2.25 Implied vol 304.4% Delta 0.639 ≈64% ITM Gamma 0.339 Theta -0.009 Vega 0.001 Open interest 22 Model this call Put · $1.5 In the money Last $0.15 Breakeven $1.35 Implied vol 126.1% Delta -0.46 ≈46% ITM Gamma 0.87 Theta -0.004 Vega 0.001 Open interest 3 Model this put
81	1	276.8%	0.462	$0.03		—	-0.739	149%	—	0
Call · $2 Last $0.03 Breakeven $2.03 Implied vol 276.8% Delta 0.462 ≈46% ITM Gamma 0.393 Theta -0.009 Vega 0.001 Open interest 81 Model this call Put · $2 In the money Last — Breakeven — Implied vol 149% Delta -0.739 ≈74% ITM Gamma 0.604 Theta -0.004 Vega 0.001 Open interest 0 Model this put
53	3	—	—	$0.08		—	-0.835	179%	—	0
Call · $2.5 Last $0.08 Breakeven $2.58 Implied vol — Delta — Gamma — Theta — Vega — Open interest 53 Model this call Put · $2.5 In the money Last — Breakeven — Implied vol 179% Delta -0.835 ≈83% ITM Gamma 0.387 Theta -0.003 Vega 0.001 Open interest 0 Model this put
1	1	—	—	$0.21		—	—	—	—	0
Call · $5 Last $0.21 Breakeven $5.21 Implied vol — Delta — Gamma — Theta — Vega — Open interest 1 Model this call Put · $5 In the money Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put
0	—	—	—	—		—	-0.939	342.8%	—	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 — Breakeven — Implied vol 342.8% Delta -0.939 ≈94% ITM Gamma 0.107 Theta -0.003 Vega 0 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 1619856 CUSIP 142038108 13F (30d) 21 filings 21 filers Visit website Investor relations