Puma Biotechnology (PBYI) Options Chain

NASDAQ: PBYIHealth CareBiotechnology: Pharmaceutical PreparationsUSD

10.29+0.32 (+3.21%)

At close: Oct 9, 4:00 PM ET · Delayed 15 min

Expiration date

Expiration: Dec 18, 2026
Days to expiration: 68
Share price: $10.29
Put/call ratio (OI): 0.58
Put/call ratio (volume): 0.13
ATM implied volatility: 72.8%
Expected move: ±$3.23
Open interest (C / P): 394 / 230

PBYI options summary

The PBYI options chain for the December 18, 2026 expiration lists 5 call and 4 put contracts, with 68 days until expiration. Open interest stands at 394 calls and 230 puts, a put/call ratio of 0.58, which is tilted bullish, with calls outnumbering puts. At-the-money implied volatility near the $10.00 strike is 72.8%, which implies the market expects a move of about ±$3.23 (31.4%) in Puma Biotechnology stock by expiration.

The most open interest sits at the $15.00 call (212 contracts) and the $5.00 put (224 contracts).

Summary generated from market data by MetaCap's automated system. Methodology

PBYI options chain · December 18, 2026

PBYI calls and puts by strike price. Shaded cells are in the money.
Calls							Puts
OI	Vol	IV	Last	Bid	Ask	Strike	Bid	Ask	Last	IV	Vol	OI
1	—	—	4.74	2.55	7.00	2.50	—	—	—	—	—	—
—	—	—	—	—	—	5.00	0.00	0.25	0.20	116.8%	5	224
8	4	156.3%	2.50	1.20	4.00	7.50	0.00	0.75	0.70	87.5%	1	4
88	20	72.8%	1.07	0.75	2.10	10.00	—	—	—	—	—	—
PBYI $10.29
85	1	70.5%	0.62	0.35	0.75	12.50	1.50	5.40	2.50	111.1%	—	1
212	21	149.9%	0.30	0.00	2.75	15.00	6.70	10.50	7.88	293.2%	—	1

In-the-money callsIn-the-money puts. IV = implied volatility, OI = open interest (contracts). Each contract covers 100 shares. Quotes delayed at least 15 minutes.

Frequently asked questions

What is the PBYI put/call ratio?

For the December 18, 2026 expiration, the PBYI put/call ratio based on open interest is 0.58 (230 puts vs 394 calls), and 0.13 based on today's volume. A ratio above 1 means more puts than calls.

What is PBYI's implied volatility?

At-the-money implied volatility for PBYI options expiring December 18, 2026 is about 72.8%, an annualized estimate of how much the market expects Puma Biotechnology stock to move.

How many PBYI option expiration dates are there?

PBYI has 4 listed expiration dates, from Oct 16, 2026 to Mar 19, 2027.

What does "in the money" mean?

A call is in the money when the strike price is below the current share price; a put is in the money when the strike is above it. In-the-money contracts have intrinsic value and are shaded in the table.