iPath Series B Carbon Exchange-Traded Notes (GRN) Options Chain
NYSE: GRNUSD
At close: Oct 9, 11:59 AM ET · Delayed 15 min
Expiration date
- Expiration
- Oct 16, 2026
- Days to expiration
- 4
- Share price
- $34.88
- Put/call ratio (OI)
- 0.00
- Put/call ratio (volume)
- 0.50
- Expected move
- ±$0.057
- Open interest (C / P)
- 1 / 0
GRN options summary
The GRN options chain for the October 16, 2026 expiration lists 4 call and 3 put contracts, with 4 days until expiration. Open interest stands at 1 calls and 0 puts, a put/call ratio of 0.00, which is tilted bullish, with calls outnumbering puts. At-the-money implied volatility near the $35.00 strike is 1.6%, which implies the market expects a move of about ±$0.057 (0.2%) in iPath Series B Carbon Exchange-Traded Notes stock by expiration.
The most open interest sits at the $36.00 call (1 contracts) and the $28.00 put (0 contracts).
Summary generated from market data by MetaCap's automated system. Methodology
GRN options chain · October 16, 2026
| Calls | Puts | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Last | Bid | Ask | Strike | Bid | Ask | Last | |||||
| — | — | — | 28.00 | 0.00 | 0.00 | 0.18 | |||||
| — | — | — | 30.00 | 0.00 | 0.00 | 0.24 | |||||
| 1.60 | 0.00 | 0.00 | 33.00 | 0.00 | 0.00 | 1.00 | |||||
| 1.20 | 0.00 | 0.00 | 34.00 | — | — | — | |||||
| 1.00 | 0.00 | 0.00 | 35.00 | — | — | — | |||||
| 1.10 | 0.00 | 4.10 | 36.00 | — | — | — | |||||
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 GRN put/call ratio?
For the October 16, 2026 expiration, the GRN put/call ratio based on open interest is 0.00 (0 puts vs 1 calls), and 0.50 based on today's volume. A ratio above 1 means more puts than calls.
What is GRN's implied volatility?
At-the-money implied volatility for GRN options expiring October 16, 2026 is about 1.6%, an annualized estimate of how much the market expects iPath Series B Carbon Exchange-Traded Notes stock to move.
How many GRN option expiration dates are there?
GRN has 2 listed expiration dates, from Oct 16, 2026 to Jan 15, 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.