How are POST straddle max profit and max loss calculated?

Upside max profit is unbounded; downside max profit is bounded at the strike minus the combined call plus put debit (reached at zero). Max loss equals the combined debit times 100 (reached when the underlying pins to the strike). Two breakevens at strike plus debit and strike minus debit. For the POST straddle priced from the end-of-day chain at a 30-day expiry (ATM IV 27.70%), the computed maximum profit is unbounded per contract and the computed maximum loss is -$689.08 per contract. Live intraday quotes will differ as the chain moves through the trading session.

What is the breakeven for a POST straddle?

The breakeven for the POST straddle priced on this page is roughly $93.03 and $106.98 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 POST market-implied 1-standard-deviation expected move is approximately 7.94%; if the move sits well outside the breakeven distance, the structure's risk-reward becomes correspondingly tighter.

How does current POST implied volatility affect this straddle?

POST ATM IV is at 27.70% with IV rank near 44.48%, 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.

POST Straddle Strategy

POST (Post Holdings, Inc.), in the Consumer Defensive sector, (Packaged Foods industry), listed on NYSE.

Post Holdings, Inc. operates as a consumer packaged goods holding company in the United States and internationally. It operates through five segments: Post Consumer Brands, Weetabix, Foodservice, Refrigerated Retail, and BellRing Brands. The Post Consumer Brands segment manufactures, markets, and sells branded and private label ready-to-eat (RTE) cereal and hot cereal products. It serves grocery stores, mass merchandise customers, supercenters, club stores, natural/specialty stores, and drug store customers, as well as sells its products in the military, ecommerce, and foodservice channels. The Weetabix segment primarily markets and distributes branded and private label RTE cereal, hot cereals and other cereal-based food products, breakfast drinks, and muesli. This segment sells its products to grocery stores, discounters, wholesalers, and convenience stores, as well as through ecommerce.

POST (Post Holdings, Inc.) trades in the Consumer Defensive sector, specifically Packaged Foods, with a market capitalization of approximately $4.73B, a trailing P/E of 14.76, a beta of 0.36 versus the broader market, a 52-week range of 94.13-117.28, average daily share volume of 752K, a public-listing history dating back to 2012, approximately 11K full-time employees. These structural characteristics shape how POST stock options price implied volatility around earnings windows, capital events, and macro-driven sector rotations.

A beta of 0.36 indicates POST has historically moved less than the broader market, dampening realized volatility and producing tighter expected-move bands per unit of dollar exposure.

What is a straddle on POST?

A long straddle buys an ATM call and an ATM put at the same strike, profiting from a large move in either direction; max loss equals the combined debit when the underlying pins to the strike at expiration.

Current POST snapshot

As of May 15, 2026, spot at $101.44, ATM IV 27.70%, IV rank 44.48%, expected move 7.94%. The straddle on POST 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 straddle structure on POST specifically: POST IV at 27.70% 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 7.94% (roughly $8.06 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 POST expiries trade a higher absolute premium for lower per-day decay. Position sizing on POST should anchor to the underlying notional of $101.44 per share and to the trader's directional view on POST stock.

POST straddle setup

The POST straddle below is built from the end-of-day chain, with each option leg priced at the bid/ask midpoint of its listed strike. With POST near $101.44, 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 POST 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 POST shares for the stock leg in covered calls and collars).

Action	Type	Strike / Basis	Premium (est)
Buy 1	Call	$100.00	$4.50
Buy 1	Put	$100.00	$2.48

POST straddle risk and reward

Net Premium / Debit: -$697.50
Max Profit (per contract): Unbounded
Max Loss (per contract): -$689.08
Breakeven(s): $93.03, $106.98
Risk / Reward Ratio: Unbounded

Upside max profit is unbounded; downside max profit is bounded at the strike minus the combined call plus put debit (reached at zero). Max loss equals the combined debit times 100 (reached when the underlying pins to the strike). Two breakevens at strike plus debit and strike minus debit.

POST straddle payoff curve

Modeled P&L at expiration across a range of underlying prices for the straddle on POST. 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%	+$9,301.50
$22.44	-77.9%	+$7,058.72
$44.87	-55.8%	+$4,815.93
$67.29	-33.7%	+$2,573.15
$89.72	-11.6%	+$330.36
$112.15	+10.6%	+$517.42
$134.58	+32.7%	+$2,760.20
$157.00	+54.8%	+$5,002.99
$179.43	+76.9%	+$7,245.77
$201.86	+99.0%	+$9,488.56

When traders use straddle on POST

Straddles on POST are pure-volatility plays that profit from large moves in either direction; traders typically buy POST straddles ahead of earnings, FDA decisions, or other catalysts where the realized move is expected to exceed the implied move priced into the chain.

POST thesis for this straddle

The market-implied 1-standard-deviation range for POST extends from approximately $93.38 on the downside to $109.50 on the upside. A POST long straddle is a pure-volatility play: it profits when the underlying moves far enough from the strike in either direction to overcome the combined call plus put debit, regardless of direction. Current POST IV rank near 44.48% is mid-range against its 1-year distribution, so the IV signal is neutral; the straddle thesis on POST should anchor more to the directional view and the expected-move geometry. As a Consumer Defensive name, POST options can move on sector-level news flow (peer earnings, regulatory updates, industry-specific macro data) in addition to POST-specific events.

POST straddle positions are structurally neutral / high-volatility (long premium); 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. POST positions also carry Consumer Defensive sector concentration risk; news flow inside the sector (peer earnings, regulatory shifts, supply-chain headlines) can move POST alongside the broader basket even when POST-specific fundamentals are unchanged. Always rebuild the position from current POST chain quotes before placing a trade.

Frequently asked questions

What is a straddle on POST?: A straddle on POST is the straddle strategy applied to POST (stock). The strategy is structurally neutral / high-volatility (long premium): A long straddle buys an ATM call and an ATM put at the same strike, profiting from a large move in either direction; max loss equals the combined debit when the underlying pins to the strike at expiration. With POST stock trading near $101.44, the strikes shown on this page are snapped to the nearest listed POST chain strike and the premiums come straight from the end-of-day bid/ask midpoint.
How are POST straddle max profit and max loss calculated?: Upside max profit is unbounded; downside max profit is bounded at the strike minus the combined call plus put debit (reached at zero). Max loss equals the combined debit times 100 (reached when the underlying pins to the strike). Two breakevens at strike plus debit and strike minus debit. For the POST straddle priced from the end-of-day chain at a 30-day expiry (ATM IV 27.70%), the computed maximum profit is unbounded per contract and the computed maximum loss is -$689.08 per contract. Live intraday quotes will differ as the chain moves through the trading session.
What is the breakeven for a POST straddle?: The breakeven for the POST straddle priced on this page is roughly $93.03 and $106.98 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 POST market-implied 1-standard-deviation expected move is approximately 7.94%; if the move sits well outside the breakeven distance, the structure's risk-reward becomes correspondingly tighter.
When should you consider a straddle on POST?: Straddles on POST are pure-volatility plays that profit from large moves in either direction; traders typically buy POST straddles ahead of earnings, FDA decisions, or other catalysts where the realized move is expected to exceed the implied move priced into the chain.
How does current POST implied volatility affect this straddle?: POST ATM IV is at 27.70% with IV rank near 44.48%, 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.