> For the complete documentation index, see [llms.txt](https://optifi.gitbook.io/optifi/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://optifi.gitbook.io/optifi/key-innovations.md).

# Key Innovations

<figure><img src="/files/AfDb27FiffyjzM8FtLRI" alt=""><figcaption><p>X-ray on OptiFi</p></figcaption></figure>

### Cross Margin and Portfolio Margin

* OptiFi is the first derivatives DEX that utilizes both Cross Margin and [Portfolio Margin](/optifi/optifi-in-depth/margin-requirements/portfolio-margin.md) across all financial instruments with the same underlying
* Allow users to build complex strategies written on a single underlying without the burden of multiple margin requirements. Have “risk-sharing” features to “net” the overall portfolio risk to **enhance capital efficiency**

### Partial Liquidations&#x20;

* [Liquidations](/optifi/optifi-in-depth/margin-requirements/liquidation-mechanism.md) happen gradually by reducing the riskiest positions first ensuring **fair liquidation and pricing** for all users&#x20;
* Leads to a **smaller liquidations, lower fees and higher user returns**

### Derivatives OptiFi Market Maker (OMM)&#x20;

* The first-ever [Delta-neutral OMM vault](/optifi/optifi-in-depth/optifi-market-maker-omm.md) created by OptiFi&#x20;
* It is designed to **generate yield to its depositors (LPs)**, more importantly, to **keep continuous liquidity** across all financial instruments traded in OptiFi exchange&#x20;
* Systemic risk management and **delta-hedging** (through [Mango](https://www.mango.markets/)) is considered to maintain safe risk limits

### Market Maker (MM) Incentive Program&#x20;

* MM Program is designed to encourage professional market-making within OptiFi exchange
* Innovative approach to promote “good” market-making practices. MM pool subscribers receive **exchange fee revenue share** while being subject to penalties for “bad” market-making practices


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