Files
ai/gateway/knowledge/trading/strategies/options/long-combo.md
Tim Olson 47471b7700 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
2026-04-28 15:05:15 -04:00

1.4 KiB

description, tags
description tags
A bullish capital-gain strategy (long risk reversal) buying an OTM call at K1 and selling an OTM put at K2 < K1, profiting from a strong upward move.
options
speculation
bullish
risk-reversal

Long Combo

Section: 2.12 | Asset Class: Options | Type: Speculation

Overview

The long combo (a.k.a. "long risk reversal") amounts to buying an OTM call option with strike K1 and selling an OTM put option with strike K2, where K1 > K2. The trader's outlook is bullish. This is a capital gain strategy.

Construction

  • Buy 1 OTM call option at strike K1
  • Sell 1 OTM put option at strike K2 (K2 < K1), same expiry

Net debit or credit H (H = D if net debit, H = -C if net credit; K1 > K2)

Payoff Profile

f_T = (S_T - K1)+ - (K2 - S_T)+ - H

Breakeven depends on sign of H:

  • S* = K1 + H (if H > 0, net debit)

  • S* = K2 + H (if H < 0, net credit)

  • K2 <= S* <= K1 (if H = 0, zero-cost)

  • Max profit: P_max = unlimited

  • Max loss: L_max = K2 + H

Key Conditions / Signals

  • Strongly bullish outlook
  • Traders often structure as zero-cost (H = 0) by selecting K1 and K2 such that premiums offset
  • Profits from a large upward move; loses if stock falls below K2

Notes

Unlike the long synthetic forward (where K1 = K2 = S0), the long combo uses out-of-the-money strikes on both legs, creating a gap zone [K2, K1] where the payoff is flat (equal to -H). Downside is limited to K2 + H if S_T goes to zero.