The Shanghai Stock Exchange recently released major new regulations, aiming to introduce a "one-sided liquidation" feature on top of its existing stock option portfolio strategy business.
This institutional innovation, aimed at improving capital efficiency and reducing trading costs, will allow investors to directly buy and close the obligated positions within the portfolio strategy, completely eliminating the cumbersome two-step process of "dissolving the portfolio first and closing positions separately."
Previously, when using options portfolio strategies, to close one leg of the obligated position, you had to split the entire portfolio and place separate orders, which was not only cumbersome but also increased slippage risk during market fluctuations. Now, the Shanghai Stock Exchange has directly cleared the "last mile," allowing you to "do it in one step" for precise position closing, saving time, effort, and money.
| Covering six major strategies, with different price differences and cross-type "treatment"
This one-sided closing feature covers six major categories of mainstream combination strategies, including call bull spreads, bear market spreads, put bull spreads, put bear spreads, as well as straddle short and wide straddle shorts.
However, in actual implementation, the rules are differentiated:
The four types of spread strategies are the most flexible, allowing investors to directly close their obligated positions in their constituent contracts on one side.
Whereas strangle short positions and wide strangle short positions involve two component contract obligations, so the new regulations only allow one-sided closing of one component contract, effectively serving as a "partial unlock" mechanism.
| Instructions and verification upgrades, margin "varies by strategy"
In terms of operation, investors only need to submit limit or market orders, and then add portfolio serial numbers and other information based on the original instructions.
The exchange conducts strict daily margin balance verifications, and only when the balance is sufficient to cover the deductible amount will the declaration be locked and imported into the order book for matching.
More importantly, the logic for releasing margin after closing positions varies greatly depending on the strategy:
No margin is required before or after the call bull and put bear market spreads; The put bull market spread and call bear market spread will directly release the margin corresponding to the original portfolio after the trade is completed; For straddle and wide straddle shorts, after releasing the original portfolio margin, the remaining single-leg obligation positions must be recalculated as margin according to the day's standard.
| Institutional risk control tests and refined systems support the market
The implementation of the new regulations not only "reduces the burden" on investors but also sets new requirements for the risk control capabilities of options trading institutions.
The plan clearly states that institutions must strictly implement portfolio position management, especially when unilateral closing of positions due to risk disposal is required, and must rigorously adhere to client agreements and risk management requirements for sufficient funds.
Industry insiders generally believe this feature represents a refined upgrade of portfolio strategy business, not only making operations more intensive but also providing institutions with clearer evidence for risk management, further enriching investors' strategy application options.
Kingtech Perspective | Options Strategy Players' "Burden Reduction" and "Refinement"
The launch of the one-sided closing function has greatly shortened the execution chain for high-frequency traders and quantitative institutions. The shortened operational chain directly reduces execution costs and slippage risk, improving strategy turnover.
Opportunity One: The "Invisible Thickening" of Quantitative and High-Frequency Strategies
For professional investors who use combination strategies for hedging and yield enhancement, one-sided closing offers a more refined "capital tap." Investors can precisely close out a specific leg to dynamically adjust their risk exposure without restructuring the entire position.
Opportunity 2: Reassess margin and capital strategies
The new regulations make margin release predictable and quantifiable. Especially for users of straddle/wide short positions, pay special attention to the margin recalculated on the remaining single leg after a one-sided liquidation, and the release of funds is "partial release" rather than "full release."
This step by the Shanghai Stock Exchange marks an important iteration in the options market infrastructure. From launching portfolio strategies in 2019 to now breaking through unilateral liquidations, regulators are using institutional innovation to guide the market toward maturity.
Investors need to quickly familiarize themselves with the new instruction format and margin rules; With reduced operating costs and improved capital efficiency, the audience for option portfolio strategies will further expand, injecting more liquidity and vitality into the market.
