PBYI · Puma Biotechnology, Inc.

Track PBYI — free Ask ALVIS about PBYI

$8.12 +0.13 (+1.63%) At close · Aug 6

Market Cap

$413.30M

50.90M

Options Chain

15-min delayed Underlying $8.12 · at close Aug 6, 2026 Options Calculator

Positioning

Aug 21, 2026 · 14 days to expiry · 10 contracts

Put / call OI

0.46

Call-heavy positioning

Open interest

329

contracts outstanding

Volume

traded today

Max pain

$7.50

$0.62 below spot

ATM implied vol

250.6%

market's expected move

Open interest by strike

Calls Puts

2.5

7.5

12.5

Chain

Click any strike for greeks, breakeven and the calculator

Expiry

Aug 21 14d Sep 18 42d Dec 18 133d Mar 19 224d

Calls						Puts
OI	Vol	IV	Δ	Last	Strike	Last	Δ	IV	Vol	OI
0	—	—	—	—		—	—	—	—	0
Call · $2.5 In the money Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this call Put · $2.5 Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put
1	1	169.4%	0.947	$3.39		—	—	—	—	0
Call · $5 In the money Last $3.39 Breakeven $8.39 Implied vol 169.4% Delta 0.947 ≈95% ITM Gamma 0.04 Theta -0.011 Vega 0.002 Open interest 1 Model this call Put · $5 Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put
88	12	88.1%	0.707	$0.80		$0.50	-0.304	413.2%	10	103
Call · $7.5 In the money Last $0.80 Breakeven $8.30 Implied vol 88.1% Delta 0.707 ≈71% ITM Gamma 0.242 Theta -0.017 Vega 0.005 Open interest 88 Model this call Put · $7.5 Last $0.50 Breakeven $7.00 Implied vol 413.2% Delta -0.304 ≈30% ITM Gamma 0.052 Theta -0.08 Vega 0.006 Open interest 103 Model this put
Underlying $8.12
70	1	117.1%	0.224	$0.08		—	-0.606	212.7%	—	0
Call · $10 Last $0.08 Breakeven $10.08 Implied vol 117.1% Delta 0.224 ≈22% ITM Gamma 0.157 Theta -0.02 Vega 0.005 Open interest 70 Model this call Put · $10 In the money Last — Breakeven — Implied vol 212.7% Delta -0.606 ≈61% ITM Gamma 0.112 Theta -0.045 Vega 0.006 Open interest 0 Model this put
67	3	170.6%	0.14	$0.05		—	-0.834	187.1%	—	0
Call · $12.5 Last $0.05 Breakeven $12.55 Implied vol 170.6% Delta 0.14 ≈14% ITM Gamma 0.08 Theta -0.021 Vega 0.004 Open interest 67 Model this call Put · $12.5 In the money Last — Breakeven — Implied vol 187.1% Delta -0.834 ≈83% ITM Gamma 0.083 Theta -0.025 Vega 0.004 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 1401667 CUSIP 74587V107 13F (30d) 40 filings 40 filers Visit website Investor relations