Benedict Lim's Playbook: Straddles, Strangles and the Risks Behind Them

Speaker: Benedict Lim, U.S. options trainer and host of one of Singapore's largest retail investor meetup groups, as he introduces strategies for when you are not sure which way a stock will go, and warns about the costs of getting it wrong.

[About the Speaker] Benedict Lim is the host of one of the largest retail investor meetup groups in Singapore, and a stock market trainer on U.S. options with over 15 years of experience in the stock markets. He is also a veteran of the banking industry, having worked at top global banks including Standard Chartered, DBS and HSBC, with over a decade as a financial analyst, business analyst and wealth manager.

[The Hook] Benedict's logic was simple: sometimes you do not know the direction. Rather than guess, you can set up a position that benefits if the price moves enough either way. Then he spent as much time on what can go wrong as on how it works.

[The Straddle]

A straddle means buying a call and a put at the same strike price and the same expiry, with the strike close to the current share price. In the house example, you buy both the right to buy and the right to sell at S$1 million.

  • If the price swings far enough in either direction, one side can pay off.

  • Because you buy two premiums, the move must be large enough to cover both costs first.

  • If the stock does not move, you do not make money, and you can lose the whole amount paid.

He stressed that timing matters: both options are bought at the same time, and time decay works against you on both.

[The Strangle]

A strangle is the same idea with different strikes: for example, a call above the current price and a put below it. It is cheaper than a straddle, but the stock must move even further before it pays. In response to a question from the audience, Benedict described the straddle as the simpler one for beginners. He also mentioned spreads as the next step, which he planned to cover in the demo.

[Two Risks to Respect]

  • Time decay. Options lose value daily, and the loss speeds up near expiry. Even with a good view on the price, you may not get the full profit if the move comes too late, and you can lose 100% of the capital if nothing happens.

  • Volatility crush. Implied volatility can fall sharply, usually after an expected event passes. When it does, option prices can shrink even if the stock moves, because part of what you paid was for uncertainty.

[Trading Is Not Gambling]

Benedict closed this section with a distinction. Trading needs an edge, which you apply repeatedly with proper size and risk management so that the edge plays out over many trades. He compared it with a casino, which does not win every hand but has an edge and plays it many times. Without an edge and disciplined sizing, it becomes gambling.

[Key Takeaways]

  • Straddle = call + put, same strike. It needs a big move to cover two premiums.

  • Strangle is cheaper but needs an even bigger move.

  • Time decay and volatility crush can hurt even when you are right on direction.

  • An edge and sensible position size separate trading from gambling.

[Call to Action 🎯]

  1. Practise on the Tiger virtual platform. Set up a straddle and a strangle on the same stock and compare their cost.

  2. Work out how far the price must move for each to break even.

  3. Drop a comment: what is one situation where you would not know the direction, and what would you do?

Markets are always moving - and sometimes, the best move is knowing what works for you.

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Comment(3)

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  • 吉3186
    ·32 minutes ago
    这篇内容主要介绍两种期权策略:跨式(Straddle)和宽跨式(Strangle)。它们适合预期股票会大幅波动,但不确定上涨还是下跌的情况。

    1. 跨式:买涨又买跌

    同时买入:

    一份Call(看涨期权)

    一份Put(看跌期权)

    两者行权价和到期日相同。

    例如:某股票现价100美元,你同时买入行权价100美元的Call和Put。

    股价涨到120美元:Call可能赚钱。

    股价跌到80美元:Put可能赚钱。

    股价停留在100美元附近:两份期权都可能亏损。

    缺点:需要支付两份权利金,股价必须有足够大的波动才能赚钱。

    2. 宽跨式:成本较低,但需要更大波动

    同时买入:

    行权价高于现价的Call。

    行权价低于现价的Put。

    例如:股票现价100美元,买入110美元Call和90美元Put。

    成本通常比跨式低,但股票必须涨得更高或跌得更低,才有机会赚钱。

    3. 新手必须认识的两个风险

    时间损耗(Theta) 期权有到期日。时间越接近到期,时间价值通常下降得越快。如果股价没有及时波动,可能损失全部权利金。

    波动率下降(IV Crush) 财报公布前,市场预期波动很大,期权可能很贵。财报公布后,即使股票上涨或下跌,隐含波动率下降也可能让期权价格缩水。

    4. 两种策略比较

    项目 跨式 宽跨式

    购买组合 Call+Put Call+Put
    行权价 相同 不同
    成本 通常较高 通常较低
    盈利条件 需要较大波动 需要更大波动
    主要风险 时间损耗、IV下降 时间损耗、IV下降

    5. 我的新手建议

    暂时不要急着用真钱交易。先在Tiger模拟平台练习,重点计算:

    总共支付多少权利金?

    股价涨到多少才赚钱?

    股价跌到多少才赚钱?

    如果股价不动,最多亏多少钱?

    记住:方向猜对,不代表期权一定赚钱。时机、波动率和权利金成本同样重要。

    我的建议是先学会计算盈亏平衡点,再考虑实际交易。

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  • 苏36
    ·36 minutes ago
    Volatility Is Not Free: The Hidden Cost of Betting on Uncertainty

    The biggest lesson I took from Benedict’s session is that being unsure about direction does not mean an options strategy is automatically safer.

    A straddle or strangle essentially trades volatility rather than direction. However, the real challenge is predicting whether the market's actual movement will exceed what is already priced into the options

    Consider a major earnings announcement. A stock may jump 5%, yet traders buying options beforehand could still lose money if implied volatility collapses after the announcement. This is the classic volatility crush

    There are three variables to evaluate: the expected price movement, the combined premiums, and the time remaining before expiry

    My takeaway is simple: Being right about volatility is not enough; you must be right about its magnitude and timing. In options trading, managing the cost of uncertainty matters just as much as predicting the opportunity

    @TigerClub

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  • Jerry Lam
    ·16:02
    🐯 **当我无法判断股票涨跌方向时,我首先会选择观望;如果预期波动足够大,才考虑买入跨式期权(Long Straddle)。**

    例如NVDA即将公布财报,我不确定股价会上涨还是下跌,但认为实际波动可能明显超过期权市场预期,这时跨式策略才值得研究。

    假设股价100美元,同时买入执行价100美元的Call和Put,总权利金为10美元,那么到期盈亏平衡点分别是90美元和110美元。只有股价突破这些位置,才可能实现到期净盈利。

    相比之下,宽跨式(Long Strangle)成本较低,但需要更大的价格波动才能盈利。

    **我最警惕的不是判断错方向,而是买贵了波动率!** 财报前IV往往较高,财报后即使股价出现波动,也可能因为IV Crush和时间价值衰减而亏损。

    所以我会重点比较隐含波动率、历史财报波幅、盈亏平衡点和最大亏损。

    **我的原则:不知道方向可以交易波动,但不知道自己的优势在哪里,就应该选择不交易。**

    真正成熟的交易者,不是每次行情都参与,而是只在风险回报比合理时出手!🐯

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