Golub Capital BDC (GBDC) Options Chain
NASDAQ: GBDCFinanceFinance: Consumer ServicesUSD
At close: Oct 9, 4:00 PM ET · Delayed 15 min
Expiration date
- Expiration
- Nov 20, 2026
- Days to expiration
- 40
- Share price
- $12.10
- Put/call ratio (OI)
- 1.60
- Put/call ratio (volume)
- 0.04
- Expected move
- ±$1.34
- Open interest (C / P)
- 1.12K / 1.78K
GBDC options summary
The GBDC options chain for the November 20, 2026 expiration lists 6 call and 8 put contracts, with 40 days until expiration. Open interest stands at 1,118 calls and 1,785 puts, a put/call ratio of 1.60, which is more bearish, with puts outnumbering calls. At-the-money implied volatility near the $12.50 strike is 33.5%, which implies the market expects a move of about ±$1.34 (11.1%) in Golub Capital BDC stock by expiration.
The most open interest sits at the $15.00 call (768 contracts) and the $12.50 put (1.67K contracts).
Summary generated from market data by MetaCap's automated system. Methodology
GBDC options chain · November 20, 2026
| Calls | Puts | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Last | Bid | Ask | Strike | Bid | Ask | Last | |||||
| 10.30 | 9.00 | 11.00 | 2.50 | 0.00 | 0.05 | 0.04 | |||||
| 7.70 | 6.50 | 8.50 | 5.00 | 0.00 | 0.10 | 0.05 | |||||
| 0.75 | 1.70 | 3.90 | 10.00 | 0.00 | 0.35 | 0.06 | |||||
| 0.37 | 0.00 | 0.30 | 12.50 | 0.10 | 0.85 | 0.55 | |||||
| 0.05 | 0.00 | 0.10 | 15.00 | 0.00 | 0.00 | 2.07 | |||||
| 0.18 | 0.00 | 0.15 | 17.50 | 3.60 | 7.20 | 5.35 | |||||
| — | — | — | 20.00 | 6.10 | 9.70 | 7.85 | |||||
| — | — | — | 22.50 | 8.60 | 12.20 | 10.30 | |||||
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 GBDC put/call ratio?
For the November 20, 2026 expiration, the GBDC put/call ratio based on open interest is 1.60 (1,785 puts vs 1,118 calls), and 0.04 based on today's volume. A ratio above 1 means more puts than calls.
What is GBDC's implied volatility?
At-the-money implied volatility for GBDC options expiring November 20, 2026 is about 33.5%, an annualized estimate of how much the market expects Golub Capital BDC stock to move.
How many GBDC option expiration dates are there?
GBDC has 4 listed expiration dates, from Oct 16, 2026 to May 21, 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.