Peerfolio

Social investing built around one rule: percentages are public, dollars never are.

Blossom, AfterHour and Robinhood Social are public feeds with follower counts and dollar amounts. Peerfolio is built on one engine with several surfaces:

• Portfolio — your own net worth, accounts and positions in one place, with a time-weighted return that ignores deposits and withdrawals. Only you see it. Accounts are added by hand or linked through Plaid (limited connections per account for now).
• Leagues — small groups of friends joined by invite link, ranked on return.
• Fantasy — play-money leagues where everyone starts with the same cash, picks stocks and races. Nothing here touches a real balance.
• Sports — play-money leagues on real games: moneyline, spread, total and player-prop picks, parlays, live in-game picks at live odds, leaderboards and invite links. Virtual cash only; this is not real-money betting or gambling.
• The Board — an opt-in public leaderboard of top investors, where every return is pulled from a connected brokerage rather than typed in.
• News — a daily and weekly market recap, index moves, Fear & Greed and the week's earnings, so there's something to read before the next move.
• Ask Peerfolio — a read-only AI assistant that answers questions about your portfolio, leagues and the market. It cannot trade and gives no advice.

Returns are time-weighted, so deposits don't count as performance. Whoever adds the most cash doesn't win; that's what makes a ranking worth reading.

Screenshots

Captured from the current UI using an isolated local demo database. Names, accounts, balances, positions and news figures are invented; no personal portfolio data is shown. Brokerage and ticker marks use the app’s real logo assets.

Landing page

Animated headline and interactive previews of Portfolio, Leagues, Fantasy, the Board and News.

Portfolio

Net worth, accounts and positions in one view. The return leaves deposits out.

Below it, every holding across every account rolled up into one list, with allocation, today's movers and the leagues you're in.

News

The recap, Fear & Greed, the week's earnings and sector moves.

The Board

Public, verified-only, percentages only.

Fantasy

Play-money leagues with a shared starting balance, an optional cap per pick and an end date. Orders placed while the market is closed wait for the open.

Leagues

A private group ranked on percentage return. Everyone is indexed to 100, so the chart compares rates of return, not who has more money.

What's shared, and what isn't

Shared	Never shared
Percentage return, time-weighted	Account balances or net worth
Top tickers as a share of your own portfolio (opt-in)	Position sizes in dollars
Handle, avatar, bio	Email address

Public profiles are opt-in and off by default.

Running it locally

No hosted services or API keys are needed to see the app running:

docker compose up -d                            # local Postgres
npm install
cp apps/web/.env.example apps/web/.env.local    # fill in the values it names
npm run db:migrate --workspace=@repo/web
npm run db:seed --workspace=@repo/web           # demo portfolios
npm run dev

Then open http://localhost:3000/dev-login and sign in as a seeded demo user. The developer login only exists in local, non-production builds. All demo people and numbers are invented.

apps/web/.env.example lists the configuration the app reads. Deployment, scheduled jobs and third-party service setup are managed privately.

Verified vs. manual accounts

Accounts carry a source: connected-brokerage accounts are verified, and typed-in accounts are manual. Manual portfolios can play in private leagues, but only verified portfolios can rank on the public board, so nothing self-reported is ever presented as verified.

Layout

apps/web/src
├── app/(app)/        Signed-in surfaces
├── app/api/          Route handlers
├── components/       UI and hand-rolled SVG charts
├── db/               Database schema and client
└── lib/              Shared logic

Scripts

Command	What it does
npm run dev	Dev server
npm run build	Build all workspaces
npm run lint	ESLint
npm run check-types	Type check
npm test	Unit tests