VBK Butterfly Strategy
VBK (Vanguard Small-Cap Growth ETF), in the Financial Services sector, (Asset Management industry), listed on AMEX.
Seeks to track the performance of the CRSP US Small Cap Growth Index, which measures the investment return of small-capitalization growth stocks. Provides a convenient way to match the performance of a diversified group of small growth companies. Follows a passively managed, full-replication approach.
VBK (Vanguard Small-Cap Growth ETF) trades in the Financial Services sector, specifically Asset Management, with a market capitalization of approximately $42.79B, a beta of 1.32 versus the broader market, a 52-week range of 257.89-349.26, average daily share volume of 220K, a public-listing history dating back to 2004. These structural characteristics shape how VBK etf options price implied volatility around earnings windows, capital events, and macro-driven sector rotations.
A beta of 1.32 indicates VBK has historically moved more than the broader market, amplifying both the directional payoff and the realized volatility relative to an index-equivalent position. VBK pays a dividend, which adjusts put-call parity and shifts the ex-dividend pricing across the listed chain.
What is a butterfly on VBK?
A long call butterfly buys one lower-strike call, sells two ATM calls, and buys one higher-strike call, paying a small net debit for a defined-risk position that maxes out if the underlying pins the middle strike at expiration.
Current VBK snapshot
As of May 15, 2026, spot at $338.29, ATM IV 24.50%, IV rank 36.71%, expected move 7.02%. The butterfly on VBK 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 butterfly structure on VBK specifically: VBK IV at 24.50% is mid-range versus its 1-year history, so strategy selection should anchor more to the directional thesis than to the IV regime, with a market-implied 1-standard-deviation move of approximately 7.02% (roughly $23.76 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 VBK expiries trade a higher absolute premium for lower per-day decay. Position sizing on VBK should anchor to the underlying notional of $338.29 per share and to the trader's directional view on VBK etf.
VBK butterfly setup
The VBK butterfly below is built from the end-of-day chain, with each option leg priced at the bid/ask midpoint of its listed strike. With VBK near $338.29, the first option leg uses a $320.00 strike; additional legs (when the strategy has them) anchor to spot-relative offsets. Premiums come from the bid/ask midpoint on the listed VBK 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 VBK shares for the stock leg in covered calls and collars).
| Action | Type | Strike / Basis | Premium (est) |
|---|---|---|---|
| Buy 1 | Call | $320.00 | $23.20 |
| Sell 2 | Call | $340.00 | $10.15 |
| Buy 1 | Call | $355.00 | $3.90 |
VBK butterfly risk and reward
- Net Premium / Debit
- -$680.00
- Max Profit (per contract)
- $1,319.49
- Max Loss (per contract)
- -$680.00
- Breakeven(s)
- $326.80, $353.20
- Risk / Reward Ratio
- 1.940
Max profit equals the wing width minus net debit times 100 (reached when the underlying pins the middle strike); max loss equals the net debit times 100. Two breakevens at lower-wing plus debit and upper-wing minus debit.
VBK butterfly payoff curve
Modeled P&L at expiration across a range of underlying prices for the butterfly on VBK. 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.
| Underlying Price | % From Spot | P&L at Expiration |
|---|---|---|
| $0.01 | -100.0% | -$680.00 |
| $74.81 | -77.9% | -$680.00 |
| $149.60 | -55.8% | -$680.00 |
| $224.40 | -33.7% | -$680.00 |
| $299.20 | -11.6% | -$680.00 |
| $373.99 | +10.6% | -$180.00 |
| $448.79 | +32.7% | -$180.00 |
| $523.59 | +54.8% | -$180.00 |
| $598.38 | +76.9% | -$180.00 |
| $673.18 | +99.0% | -$180.00 |
When traders use butterfly on VBK
Butterflies on VBK are pinning bets - traders use them when they expect VBK to settle near a specific level at expiration (often the prior close, a round number, or the max-pain strike) and want defined-risk exposure to that outcome.
VBK thesis for this butterfly
The market-implied 1-standard-deviation range for VBK extends from approximately $314.53 on the downside to $362.05 on the upside. A VBK long call butterfly is a pinning play: it pays maximum at the middle strike if VBK settles there at expiration, with the wing legs capping both the cost and the maximum loss to the net debit. Current VBK IV rank near 36.71% is mid-range against its 1-year distribution, so the IV signal is neutral; the butterfly thesis on VBK should anchor more to the directional view and the expected-move geometry. As a Financial Services name, VBK options can move on sector-level news flow (peer earnings, regulatory updates, industry-specific macro data) in addition to VBK-specific events.
VBK butterfly positions are structurally neutral / pin (limited-risk, limited-reward); 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. VBK positions also carry Financial Services sector concentration risk; news flow inside the sector (peer earnings, regulatory shifts, supply-chain headlines) can move VBK alongside the broader basket even when VBK-specific fundamentals are unchanged. Always rebuild the position from current VBK chain quotes before placing a trade.
Frequently asked questions
- What is a butterfly on VBK?
- A butterfly on VBK is the butterfly strategy applied to VBK (etf). The strategy is structurally neutral / pin (limited-risk, limited-reward): A long call butterfly buys one lower-strike call, sells two ATM calls, and buys one higher-strike call, paying a small net debit for a defined-risk position that maxes out if the underlying pins the middle strike at expiration. With VBK etf trading near $338.29, the strikes shown on this page are snapped to the nearest listed VBK chain strike and the premiums come straight from the end-of-day bid/ask midpoint.
- How are VBK butterfly max profit and max loss calculated?
- Max profit equals the wing width minus net debit times 100 (reached when the underlying pins the middle strike); max loss equals the net debit times 100. Two breakevens at lower-wing plus debit and upper-wing minus debit. For the VBK butterfly priced from the end-of-day chain at a 30-day expiry (ATM IV 24.50%), the computed maximum profit is $1,319.49 per contract and the computed maximum loss is -$680.00 per contract. Live intraday quotes will differ as the chain moves through the trading session.
- What is the breakeven for a VBK butterfly?
- The breakeven for the VBK butterfly priced on this page is roughly $326.80 and $353.20 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 VBK market-implied 1-standard-deviation expected move is approximately 7.02%; if the move sits well outside the breakeven distance, the structure's risk-reward becomes correspondingly tighter.
- When should you consider a butterfly on VBK?
- Butterflies on VBK are pinning bets - traders use them when they expect VBK to settle near a specific level at expiration (often the prior close, a round number, or the max-pain strike) and want defined-risk exposure to that outcome.
- How does current VBK implied volatility affect this butterfly?
- VBK ATM IV is at 24.50% with IV rank near 36.71%, which is mid-range against its 1-year history. Strategy selection depends more on directional thesis and expected move than on a strong IV signal.