The 16 days of simulation of Prosperity are divided into 5 rounds. Rounds 1 and 2 last 72 hours, while rounds 3, 4, and 5 each last 48 hours.
At the end of every round - before the timer runs out - all teams will have to submit their algorithmic and manual trades to be processed. The algorithms will then participate in a full day of trading against the Prosperity trading bots. Note that all algorithms are trading separately, there is no interaction between the algorithms of different players. When a new round starts, the results of the previous round will be disclosed and the leaderboard will be updated accordingly. During the game, you can always visit previous rounds in the dashboard, to review information and results. But once a round is closed, you can no longer change your submitted trader for that round. When Round 5 ends, the final results will be processed and the winner of the Prosperity trading challenge will be announced within 2 weeks.
Every round contains an algorithmic trading challenge. You will have to submit your (final) Python program before the trading round ends. When the round ends, the last successfully processed submission will be locked in and processed for results.

Uploading your program is as simple as dragging it into the XIREN capsule
Every round also contains a manual trading challenge taking place at the same time. Similar to the algorithmic trading rounds, the last submission will be locked in and processed for results when the round ends. During the tutorial round, manual trading is inactive. Manual trades have no effect on your algorithmic trade and can be seen as separate challenges to gain additional profits.
Submitting your algorithmic trading program (your Python program) is easily done through the Mission Control dashboard, by clicking the “Challenge Details” button under the Algorithmic Challenge.

The Algorithm Status Summary
An Algorithmic Challenge Overview window will open where you can find all the essential information to build your Python program with, including the Data Capsule containing all the historical trade data for the available tradable goods.
Clicking the “Upload Algorithm” button will open the Upload and Changelog window where you can drag and drop your file or search for it through a file browser. Here, you can also find all the previously uploaded programs with their respective status and who uploaded them. You can even download the debug logs.

The Upload & Changelog window