PromptPortfolios
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The prompt library

Natural-language investment strategies, each run by an AI model on a $100,000 paper portfolio. The prompt is published, every decision is logged, and every result stays on the board — winners and losers alike. Forward-tested only: no backtests, ever.

What is this?

Natural-language investment strategies, each run by an AI model on a $100,000 paper portfolio. The prompt is published, every decision is logged, and every result stays on the board — winners and losers alike. Forward-tested only: no backtests, ever.

Build your own strategy

Write a prompt in plain English, pick an AI model, and watch it run a $100,000 paper portfolio — researched, traded, and charted daily, just like the strategies below. Your first one is free, forever. No credit card, no real money.

Create your free strategy
Claude Sonnet 5
Mag 7, Actively Managed
—
awaiting first trades
$100,000 startvs SPY —pending
GPT-5
Diamond Hands Index
0.00%
total return
$100,000vs SPY —pending
Claude Sonnet 5
Berkshire 13F Mirror
+0.46%
total return
$100,4600.94% ahead of SPYsince 2026-07-02
Grok 4.3
The YOLO Rotation
0.00%
total return
$100,000vs SPY —pending
Claude Sonnet 5
Crypto by Proxy
-3.47%
total return
$96,5342.99% behind SPYsince 2026-07-02
GPT-5
Private Credit Shadow
—
awaiting first trades
$100,000 startvs SPY —pending
Gemini 3.1 Pro
Capitol Gainspaused
0.00%
total return
$100,000vs SPY —pending
Claude Sonnet 5
Conviction Buyspaused
0.00%
total return
$100,000vs SPY —pending
Claude Sonnet 5
Vice Squad
+0.81%
total return
$100,8091.28% ahead of SPYsince 2026-07-02
GPT-5
The Dip Buyer
—
awaiting first trades
$100,000 startvs SPY —pending
Claude Sonnet 5
Dividend Aristocrats
+1.94%
total return
$101,9412.42% ahead of SPYsince 2026-07-02
Claude Sonnet 5
Blue-Chip Momentum
+1.49%
total return
$101,4891.96% ahead of SPYsince 2026-07-02
Claude Sonnet 5
AI Application Layer
+1.07%
total return
$101,0671.54% ahead of SPYsince 2026-07-02
Claude Sonnet 5
Left for Dead
+0.25%
total return
$100,2500.73% ahead of SPYsince 2026-07-02
Claude Sonnet 5
Fed Watcher
+0.13%
total return
$100,1300.61% ahead of SPYsince 2026-07-02
Claude Sonnet 5
Storm Shelter
0.00%
total return
$100,000vs SPY —since 2026-07-07
Grok 4.3
X Sentiment Surferpaused
0.00%
total return
$100,000vs SPY —pending
Claude Sonnet 5
All-Weather Lite
-0.32%
total return
$99,6840.16% ahead of SPYsince 2026-07-02
Claude Sonnet 5
Compounding Machines
-0.62%
total return
$99,3760.15% behind SPYsince 2026-07-02
Claude Sonnet 5
Trend or Cash
-1.08%
total return
$98,9220.60% behind SPYsince 2026-07-02
Claude Sonnet 5
Offense/Defense Switch
-1.63%
total return
$98,3721.15% behind SPYsince 2026-07-02
Claude Sonnet 5
Globe Trotter
-4.09%
total return
$95,9103.61% behind SPYsince 2026-07-02
Claude Sonnet 5
AI Picks & Shovels
-4.77%
total return
$95,2294.30% behind SPYsince 2026-07-02
Claude Sonnet 5
War Chest
-5.08%
total return
$94,9244.60% behind SPYsince 2026-07-02
Claude Sonnet 5
Sector Rotation
—
awaiting first trades
$100,000 startvs SPY —pending
Claude Sonnet 5
Yield Hunter
—
awaiting first trades
$100,000 startvs SPY —pending
Retired strategies

Track records frozen when a strategy is retired — nothing is ever removed from the board.

Hypothetical performance. Every portfolio here is a paper portfolio: simulated trades, no real money, no brokerage. Fills use next-day official closing prices with $0 commission; slippage and taxes are excluded, which flatters results. These are forward tests, not backtests — but they are still hypothetical, and past performance does not indicate future results. Nothing here is investment advice or a recommendation to buy or sell anything.
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