GBDC Collar Strategy
GBDC (Golub Capital BDC, Inc.), in the Financial Services sector, (Asset Management industry), listed on NASDAQ.
Golub Capital BDC, Inc. (GBDC) is a business development company and operates as an externally managed closed-end non-diversified management investment company. It invests in debt and minority equity investments in middle-market companies that are, in most cases, sponsored by private equity investors. It typically invests in diversified consumer services, automobiles, healthcare technology, insurance, health care equipment and supplies, hotels, restaurants and leisure, healthcare providers and services, IT services and specialty retails. It seeks to invest in the United States. It primarily invests in first lien traditional senior debt, first lien one stop, junior debt and equity, senior secured, one stop, unitranche, second lien, subordinated and mezzanine loans of middle-market companies, and warrants.
GBDC (Golub Capital BDC, Inc.) trades in the Financial Services sector, specifically Asset Management, with a market capitalization of approximately $3.41B, a trailing P/E of 16.78, a beta of 0.43 versus the broader market, a 52-week range of 11.77-15.63, average daily share volume of 2.5M, a public-listing history dating back to 2010, approximately 875 full-time employees. These structural characteristics shape how GBDC stock options price implied volatility around earnings windows, capital events, and macro-driven sector rotations.
A beta of 0.43 indicates GBDC has historically moved less than the broader market, dampening realized volatility and producing tighter expected-move bands per unit of dollar exposure. GBDC pays a dividend, which adjusts put-call parity and shifts the ex-dividend pricing across the listed chain.
What is a collar on GBDC?
A collar pairs long stock with a protective out-of-the-money put financed by a short out-of-the-money call, capping both tails of the position around the current spot.
Current GBDC snapshot
As of May 15, 2026, spot at $13.07, ATM IV 17.00%, IV rank 1.59%, expected move 4.87%. The collar on GBDC below is built from the same end-of-day chain, with strikes snapped to listed contracts and premiums pulled from the bid/ask midpoint at a 34-day expiry.
Why this collar structure on GBDC specifically: IV regime affects collar pricing on both sides; compressed GBDC IV at 17.00% typically pushes the short call premium to roughly offset the long put cost, with a market-implied 1-standard-deviation move of approximately 4.87% (roughly $0.64 on the underlying). The 34-day window matched to the front-month expiry keeps theta exposure bounded while still capturing the post-snapshot move; longer-dated GBDC expiries trade a higher absolute premium for lower per-day decay. Position sizing on GBDC should anchor to the underlying notional of $13.07 per share and to the trader's directional view on GBDC stock.
GBDC collar setup
The GBDC collar below is built from the end-of-day chain, with each option leg priced at the bid/ask midpoint of its listed strike. With GBDC near $13.07, the first option leg uses a $13.72 strike; additional legs (when the strategy has them) anchor to spot-relative offsets. Premiums come from the bid/ask midpoint on the listed GBDC chain at a 34-day expiry; the cross-strike IV skew is reflected directly in the per-leg values rather than approximated. Quantity sizing assumes one contract per option leg (or 100 GBDC shares for the stock leg in covered calls and collars).
| Action | Type | Strike / Basis | Premium (est) |
|---|---|---|---|
| Buy 100 shares | Stock | $13.07 | long |
| Sell 1 | Call | $13.72 | N/A |
| Buy 1 | Put | $12.42 | N/A |
GBDC collar risk and reward
- Net Premium / Debit
- N/A
- Max Profit (per contract)
- Unbounded
- Max Loss (per contract)
- Unbounded
- Breakeven(s)
- None on modeled curve
- Risk / Reward Ratio
- N/A
Max profit roughly equals short-call strike minus cost basis plus net premium; max loss roughly equals cost basis minus long-put strike minus net premium. Breakeven shifts by the net premium.
GBDC collar payoff curve
Modeled P&L at expiration across a range of underlying prices for the collar on GBDC. Each row is one sampled price point from the computed payoff curve; the full curve uses 200 price points internally before being summarized into 10 rows here.
When traders use collar on GBDC
Collars on GBDC hedge an existing long GBDC stock position; the long put sets a floor while the short call finances it, often run as a near-zero-cost hedge during expected volatility windows.
GBDC thesis for this collar
The market-implied 1-standard-deviation range for GBDC extends from approximately $12.43 on the downside to $13.71 on the upside. A GBDC collar hedges an existing long GBDC position with a protective put while financing the put cost via a short call; when the premiums roughly offset, the collar acts as a near-zero-cost insurance band around the current spot. Current GBDC IV rank near 1.59% sits in the lower third of its 1-year distribution, where IV often re-expands toward the mean; this favors premium-buying structures and disadvantages premium-selling structures on GBDC at 17.00%. As a Financial Services name, GBDC options can move on sector-level news flow (peer earnings, regulatory updates, industry-specific macro data) in addition to GBDC-specific events.
GBDC collar positions are structurally neutral (protective); the modeled P&L assumes European-style exercise at expiration and ignores early assignment, transaction costs, dividends paid before expiry on the stock leg (when present), and the bid-ask spread on the listed chain. GBDC positions also carry Financial Services sector concentration risk; news flow inside the sector (peer earnings, regulatory shifts, supply-chain headlines) can move GBDC alongside the broader basket even when GBDC-specific fundamentals are unchanged. Always rebuild the position from current GBDC chain quotes before placing a trade.
Frequently asked questions
- What is a collar on GBDC?
- A collar on GBDC is the collar strategy applied to GBDC (stock). The strategy is structurally neutral (protective): A collar pairs long stock with a protective out-of-the-money put financed by a short out-of-the-money call, capping both tails of the position around the current spot. With GBDC stock trading near $13.07, the strikes shown on this page are snapped to the nearest listed GBDC chain strike and the premiums come straight from the end-of-day bid/ask midpoint.
- How are GBDC collar max profit and max loss calculated?
- Max profit roughly equals short-call strike minus cost basis plus net premium; max loss roughly equals cost basis minus long-put strike minus net premium. Breakeven shifts by the net premium. For the GBDC collar priced from the end-of-day chain at a 30-day expiry (ATM IV 17.00%), the computed maximum profit is unbounded per contract and the computed maximum loss is unbounded per contract. Live intraday quotes will differ as the chain moves through the trading session.
- What is the breakeven for a GBDC collar?
- The breakeven for the GBDC collar priced on this page is no defined breakeven on the modeled curve at expiration, derived from end-of-day chain premiums. Breakeven is the underlying price at which the strategy's P&L crosses zero ignoring transaction costs and assignment risk. The current GBDC market-implied 1-standard-deviation expected move is approximately 4.87%; if the move sits well outside the breakeven distance, the structure's risk-reward becomes correspondingly tighter.
- When should you consider a collar on GBDC?
- Collars on GBDC hedge an existing long GBDC stock position; the long put sets a floor while the short call finances it, often run as a near-zero-cost hedge during expected volatility windows.
- How does current GBDC implied volatility affect this collar?
- GBDC ATM IV is at 17.00% with IV rank near 1.59%, which is on the low end of its 1-year range. Premium-buying structures (long call, long put, debit spreads) are relatively cheap in this regime; premium-selling structures collect less credit per unit risk.