MDYG Butterfly Strategy
MDYG (State Street SPDR S&P 400 Mid Cap Growth ETF), in the Financial Services sector, (Asset Management industry), listed on AMEX.
The State Street SPDR S&P 400 Mid Cap Growth ETF seeks to provide investment results that, before fees and expenses, correspond generally to the total return performance of the S&P MidCap 400 Growth Index (the "Index")The Index contains stocks that exhibit the strongest growth characteristics based on: sales growth, earnings change to price ratio, and momentum
MDYG (State Street SPDR S&P 400 Mid Cap Growth ETF) trades in the Financial Services sector, specifically Asset Management, with a market capitalization of approximately $2.67B, a beta of 1.09 versus the broader market, a 52-week range of 82.34-109.31, average daily share volume of 88K, a public-listing history dating back to 2005. These structural characteristics shape how MDYG etf options price implied volatility around earnings windows, capital events, and macro-driven sector rotations.
A beta of 1.09 places MDYG roughly in line with broader market moves, so the strategy payoff and realized volatility track the index-equivalent baseline. MDYG pays a dividend, which adjusts put-call parity and shifts the ex-dividend pricing across the listed chain.
What is a butterfly on MDYG?
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 MDYG snapshot
As of May 15, 2026, spot at $105.32, ATM IV 18.90%, IV rank 26.23%, expected move 5.42%. The butterfly on MDYG 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 MDYG specifically: MDYG IV at 18.90% is on the cheap side of its 1-year range, which favors premium-buying structures like a MDYG butterfly, with a market-implied 1-standard-deviation move of approximately 5.42% (roughly $5.71 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 MDYG expiries trade a higher absolute premium for lower per-day decay. Position sizing on MDYG should anchor to the underlying notional of $105.32 per share and to the trader's directional view on MDYG etf.
MDYG butterfly setup
The MDYG 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 MDYG near $105.32, the first option leg uses a $100.00 strike; additional legs (when the strategy has them) anchor to spot-relative offsets. Premiums come from the bid/ask midpoint on the listed MDYG 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 MDYG shares for the stock leg in covered calls and collars).
| Action | Type | Strike / Basis | Premium (est) |
|---|---|---|---|
| Buy 1 | Call | $100.00 | $6.90 |
| Sell 2 | Call | $105.00 | $3.40 |
| Buy 1 | Call | $110.00 | $0.97 |
MDYG butterfly risk and reward
- Net Premium / Debit
- -$107.00
- Max Profit (per contract)
- $372.58
- Max Loss (per contract)
- -$107.00
- Breakeven(s)
- $101.07, $108.93
- Risk / Reward Ratio
- 3.482
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.
MDYG butterfly payoff curve
Modeled P&L at expiration across a range of underlying prices for the butterfly on MDYG. 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% | -$107.00 |
| $23.30 | -77.9% | -$107.00 |
| $46.58 | -55.8% | -$107.00 |
| $69.87 | -33.7% | -$107.00 |
| $93.15 | -11.6% | -$107.00 |
| $116.44 | +10.6% | -$107.00 |
| $139.72 | +32.7% | -$107.00 |
| $163.01 | +54.8% | -$107.00 |
| $186.30 | +76.9% | -$107.00 |
| $209.58 | +99.0% | -$107.00 |
When traders use butterfly on MDYG
Butterflies on MDYG are pinning bets - traders use them when they expect MDYG 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.
MDYG thesis for this butterfly
The market-implied 1-standard-deviation range for MDYG extends from approximately $99.61 on the downside to $111.03 on the upside. A MDYG long call butterfly is a pinning play: it pays maximum at the middle strike if MDYG settles there at expiration, with the wing legs capping both the cost and the maximum loss to the net debit. Current MDYG IV rank near 26.23% 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 MDYG at 18.90%. As a Financial Services name, MDYG options can move on sector-level news flow (peer earnings, regulatory updates, industry-specific macro data) in addition to MDYG-specific events.
MDYG 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. MDYG positions also carry Financial Services sector concentration risk; news flow inside the sector (peer earnings, regulatory shifts, supply-chain headlines) can move MDYG alongside the broader basket even when MDYG-specific fundamentals are unchanged. Always rebuild the position from current MDYG chain quotes before placing a trade.
Frequently asked questions
- What is a butterfly on MDYG?
- A butterfly on MDYG is the butterfly strategy applied to MDYG (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 MDYG etf trading near $105.32, the strikes shown on this page are snapped to the nearest listed MDYG chain strike and the premiums come straight from the end-of-day bid/ask midpoint.
- How are MDYG 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 MDYG butterfly priced from the end-of-day chain at a 30-day expiry (ATM IV 18.90%), the computed maximum profit is $372.58 per contract and the computed maximum loss is -$107.00 per contract. Live intraday quotes will differ as the chain moves through the trading session.
- What is the breakeven for a MDYG butterfly?
- The breakeven for the MDYG butterfly priced on this page is roughly $101.07 and $108.93 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 MDYG market-implied 1-standard-deviation expected move is approximately 5.42%; if the move sits well outside the breakeven distance, the structure's risk-reward becomes correspondingly tighter.
- When should you consider a butterfly on MDYG?
- Butterflies on MDYG are pinning bets - traders use them when they expect MDYG 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 MDYG implied volatility affect this butterfly?
- MDYG ATM IV is at 18.90% with IV rank near 26.23%, 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.