Because the prices at the Mirror trading platform are pegged/fixed to the underlying asset price. It doesn't change based on demand and supply at mirror trading. It changes based on changes in the price of the underlier. In short, we are a "trading exchange" which has fixed prices. Here is an example.

Consider TSLA trading at Nasdaq and MSTLA  trading at Mirror trading platform
At all times TSLA PRICE = MTSLA Price

Say, at Time = T0
TSLA Price @ Nasdaq = $489.60
Therefore, MTSLA Price @ Mirror =  $489.60

Notes: MTSLA price doesn't change irrespective of buyers and sellers at Mirror. The trading platform is like Uniswap. So there is only one price that can be traded. (As compared to Binance where you can see the market depth)

Now, at Time = T1
TSLA Price @ Nasdaq = $495.00
Therefore, MTSLA Price @ Mirror =  $495.00

Notes: T1 could be 1 minute later, 2 hours later, several weeks or years later. Doesn't matter. This equation will always hold true. i.e TSLA Price = MTSLA Price. No one can tamper with this equation (not even the dev team)

So in short, if someone buys MSTLA at @489.60 and sells at $495.00, they would have replicated the returns of TSLA. The convenience is that you can buy MTSLA with ETH, USDT, or USDC easily (as compared to buying TSLA, where you have to convert your ETH into USD/GBP first)

MTSLA price will be sourced in a decentralized manner from multiple sources. Currently, all asset-tokens are executed against a price that is supplied by mirror oracles using price feeds from various authorised, however, centralized brokerage firms and two separate market data terminals e.g. Bloomberg and Reuters. As an added control, the price feed then goes through a secondary reconciliation with an error threshold of .002%. Price feed will be completely decentralized as the adoption grows.

Hope this helps, but happy to explain more.

Crypto markets are 24 x 7 and we need to follow that format. In order to be truly global, it makes sense to be 24 x 7. So, we allowed trading during off-market hours. During off-market hours, the price will reflect the closing market price of the day. The trading engine will continue to match potential buyers and sellers. This allows the trading engine to offer a 24 hour, 7 days week accessible market.
So say, the closing price of Apple Stock is $117.34 at 4pm on Friday. This means that the closing price of MAPPL (an asset that we can trade at mirror) will also be $117.34. During the weekend, until Monday morning when the stock market opens, traders can still trade MAPPL @ $117.34. The trade engine will continue to match trades from buy side or sell side @$117.34. This breaks an interesting hurdle currently in the traditional crypto markets. With Mirror, you can trade anytime.

However, traders should understand that the opening price on the following day i.e. Monday morning in our example above, may not be the same as in the off-market hours. The opening price of APPL Stock on Monday morning could be $120.00, (which means MAPPL also changes to $120.00). So if the traders went short on MAPPL over the weekend, they can lose. However, traders who went long on MAPPL will make money.

Announcing the launch of Mirror Protocol    

We are excited to announce the launch of Mirror Protocol, a trading and liquidity platform for crypto-owners. Mirror protocol is perfect for crypto-traders, investors, and crypto-firms who want to gain exposure to real-world traditional assets to diversify their portfolios without the need to convert their crypto-currencies into any other native currency.

Whitepaper: https://mirror.one/Mirror_Protocol_Whitepaper.pdf
Website: https://mirror.one/
DAPP Platform: https://mirror.one/mirror-token


What is Mirror Protocol?
Mirror.One or just “Mirror” is a trading and liquidity protocol that allows traders to replicate the returns of real-world tradable assets in a constraints-free and decentralized ecosystem. The use cases of the trading protocol span from tactical and quantitative trading opportunities to long-term portfolio management, diversification and hedging, transfer and inheritance of crypto-denominated traditional assets in a decentralised manner, all with an added benefit of reduced cost of investment. Mirror trading protocol will enable investors, traders, wealth management advisors, hedge funds, and other institutional and endowments funds to seamlessly gain crypto and traditional assets exposure.

Mirror liquidity protocol is self-sustaining, dynamic, and permission-less. It allows exposure to global indices, stocks, asset managers and funds looking for faster and simpler settlement to gain exposure to traditional assets. All traditional assets are backed by multi-layered liquidity pools. Investors can sell their assets anytime at the current market price 24 hours a day and 7 seven days a week.

Protocol is built keeping the following core properties in mind.
● Decentralized: No one can control the pricing and liquidity protocol
● Permission-less: Anyone in world can use it unconditionally
● Fractional: Tiny amounts of the asset can be bought and sold
● Self-regulated: Listing of new assets and liquidity pools to be governed by community
● Self-sustaining: Liquidity protocol to be self-sustaining
● Transparent: All transactions are on chain and on public ledger
● Anonymous: No profile or background information of the users is required

What is Mirror Token?
Mirror token is a native token for Mirror Protocol and mirror token holders play the central role in running the protocol. Mirror token holders are -

● Governing members of the protocol — providing token holders the ability to vote on key decisions to sustain the protocol e.g., new asset-tokens to be listed, de-listing of existing asset-tokens, listing of multi-asset synthetic products, upgrade or downgrade insurance contracts, and initiate audit of code and balances.
● Custodians of the master reserve pool — dial up or down funding of an individual asset-token liquidity pool; increase or decrease the token burn rate (within a range) when the master liquidity pool is called.
● Principal liquidity providers of the master reserve pool — earn share of all fees and staking returns from the master reserve pool.

Mirror Protocol is an honest step towards equality and simplicity. We envision a world where traditional and cryptocurrency markets are universally accessible, cheap, fast, and safe. And we hope Mirror protocol will be giant leap towards that direction.