Expand model tag support: add GLM-5.1, simplify Anthropic IDs, scan tags anywhere in message
- Flink update_bars debouncing - update_bars subscription idempotency bugfix - Price decimal correction bugfix of previous commit - Add GLM-5.1 model tag alongside renamed GLM-5 - Use short Anthropic model IDs (sonnet/haiku/opus) instead of full version strings - Allow @tags anywhere in message content, not just at start - Return hasOtherContent flag instead of trimmed rest string - Only trigger greeting stream when tag has no other content - Update workspace knowledge base references to platform/workspace and platform/shapes - Hierarchical knowledge base catalog - 151 Trading Strategies knowledge base articles - Shapes knowledge base article - MutateShapes tool instead of workspace patch
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description: "A sideways income strategy selling an OTM call at K1 and an OTM put at K2 < K1, collecting premium with a wider profit zone than a short straddle but lower credit."
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tags: [options, income, neutral, strangle]
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# Short Strangle
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**Section**: 2.26 | **Asset Class**: Options | **Type**: Income
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## Overview
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The short strangle is a sideways strategy consisting of a short position in an OTM call option with strike K1 and a short position in an OTM put option with strike K2 (K2 < K1). This is a net credit trade. Since both options are OTM, this strategy is less risky than a short straddle position; the flipside is that the initial credit is also lower. The trader's outlook is neutral. This is an income strategy.
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## Construction
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- Sell 1 OTM call option at strike K1
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- Sell 1 OTM put option at strike K2 (K2 < K1), same expiry
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Net credit: C
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## Payoff Profile
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f_T = -(S_T - K1)+ - (K2 - S_T)+ + C
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- Upper breakeven: S*_up = K1 + C
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- Lower breakeven: S*_down = K2 - C
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- Max profit: P_max = C (if K2 <= S_T <= K1 at expiry; both options expire worthless)
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- Max loss: L_max = unlimited (stock can move far in either direction)
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## Key Conditions / Signals
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- Neutral view; expects stock to remain between K2 and K1 through expiry
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- High implied volatility environment makes the collected credit larger
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- Wider profit zone than a short straddle, but smaller credit collected
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## Notes
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Unlimited risk in both directions once the stock moves outside [K2, K1]. The position is short vega and long theta. Less risky than the short straddle but still requires active management for large moves.
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