Say you have 150 entries across 20 contests and a pool of 3000 lineups. Picking the top 150 lineups by SIM ROI has two problems.

Value depends on the contest. The size and payout structure of a contest determine which lineups are better suited for it.

Entries are not independent. Fill 150 entries with the highest ROI lineups and you get 150 near-identical rosters. One injury zeroes the whole slate. The value of each entry depends on what your other entries already hold. That makes it a portfolio problem.

Before the Portfolio Builder, the Simulator handled one contest per run and left the entry allocation to your spreadsheet.

Export the entries file from DraftKings or FanDuel the same way you do for late swap. It lists every entry you hold and the contest each one belongs to. Your lineup pool can come from the optimizer, the lineup builder, or an upload, the same as any Simulator run.

The Portfolio Builder handles the rest.

Every lineup gets a score for every contest. The score has two parts.

Contest ROI. How well the lineup is expected to do in that specific contest, based on where it finished across the simulations and that contest's payout table. You can score by ROI, cash rate, or first place rate.

Coverage. How many simulated outcomes the lineup wins that your other entries do not already win. The Portfolio Builder looks at each lineup's best simulated finishes and checks whether those outcomes are already covered by an entry you have filled.

Entries are filled one at a time. Each time, the Portfolio Builder takes the lineup that adds the most score given everything already assigned. A lineup that wins in the same simulations as your existing entries adds less. A lineup that wins in simulations nothing else covers adds more.

Coverage counts the outcomes you get paid in, not how different the rosters look. 150 lineups that all need the same quarterback to hit will score badly on coverage, which is correct.

"Wins" in this context does not mean 1st overall, it's a representation of a high finish position whose exact definition varies based on the contest.

• ROI Score. The average expected value across your filled entries.
• Expected Profit. Entry fee times expected value, added up. This is the dollar figure most players compare.
• Coverage. The share of simulated outcomes where at least one of your entries has a high finish.
• Diversity Score. A measure of how diverse your lineups are.
• A fill summary for each contest and a count of how many times each lineup was used.

• If a contest in your entries file has not been simulated, its entries are left blank and the contest is named in the results.
• You can limit to using a lineup only once total per portfolio, or allow lineups to be re-used in different contests.
• All contests must be on the same slate. The Portfolio Builder uses one simulation of the slate for every contest.
• Classic slates only to start. Showdown is not supported yet.
• Included with the 25 and 3000 Lineup Simulator plans.