SO P&L Curve
The Southern Company (SO) operates in the Utilities sector, specifically the Regulated Electric industry, with a market capitalization near $105.00B, listed on NYSE, employing roughly 28,314 people, carrying a beta of 0.36 to the broader market. The Southern Company, through its subsidiaries, engages in the generation, transmission, and distribution of electricity. Led by Christopher C. Womack, public since 1981-12-31.
A profit/loss curve charts the theoretical gain or loss of an options position across a range of underlying prices. It helps traders visualize risk, identify breakeven points, and compare strategies before committing capital.
- Exchange
- NYSE
- Sector
- Utilities
- Industry
- Regulated Electric
- Market Cap
- $105.00B
- Employees
- 28.3K
- IPO Date
- 1981-12-31
- CEO
- Christopher C. Womack
- Beta
- 0.36
At the current $92.58 spot price with 18.4% ATM implied volatility and 28 days to the front expiration, an at-the-money long straddle carries an approximate combined premium near $3.78, producing breakevens at roughly $88.80 and $96.36. Market-implied 1-standard-deviation range extends from $87.68 to $97.48, which sets the relevant P&L evaluation window for most near-term strategies. Payoff diagrams should be rebuilt from the live options chain; the preceding values are illustrative and assume a single at-the-money straddle for reference.
Frequently asked SO pl curve questions
- What does a SO ATM straddle cost today?
- Using current SO pricing (18.4% ATM IV, 28-day front expiration, $92.58 spot), an at-the-money long straddle (long call + long put at the same strike) carries an approximate combined premium near $3.78 per spread. Breakevens land at roughly $96.36 on the upside and $88.80 on the downside. The estimate uses the Brenner-Subrahmanyam approximation for at-the-money options under Black-Scholes.
- How do I read an options P&L curve?
- An options P&L curve plots theoretical position value at expiration (or at any chosen evaluation date) against the underlying price. The X-axis is the underlying price scenario, the Y-axis is position dollar P&L. The shape of the curve tells you the strategy's directional sensitivity, breakeven points, maximum profit and loss levels, and where time decay or volatility shifts will be most impactful. Multi-leg structures combine the curves of the individual legs to produce composite payoff diagrams.
- What's the difference between a P&L curve and a payoff diagram?
- Strictly: a payoff diagram shows option value at expiration (no time premium left), while a P&L curve typically shows position value at any evaluation date (with remaining time premium). The expiration payoff diagram has kinks at the strikes; the early P&L curve is smooth. For directional-vega trades, the early P&L curve also responds to IV shifts that the expiration payoff diagram does not capture - which is why options traders often look at both views.
- Why are illustrative SO P&L numbers approximate?
- The numbers above use Black-Scholes assumptions (lognormal returns, constant volatility, no early exercise, no dividends). Real-world option prices reflect skew, term structure, jump risk, and (for US-style options) early exercise premium. Use the live options chain for actual quoted bid/ask prices when sizing trades; the values here illustrate magnitude only.