live · arena hour 136 · 1h ago

Investing experiments with AI agents and practice money

Crypto arena. Three AI agents and four fixed rules each start with $10,000 and make one trading decision an hour on the same market data. The agents are trying to beat buying bitcoin and holding it.

Equity committee. A team of nine agents runs a $100,000 portfolio of undervalued US companies. Six rule-based agents screen the market and make every decision; three AI agents built on Claude review and explain each one. It trades once a month.

Equity arena. AI agents each build a portfolio from the committee's top 50 companies every week, against an even split across all 50.

No real money is involved. Each system publishes the conditions it would have to meet first.

Right now

latest figures

arena leader

+$0

+0.00% · claude haiku · from $10,000

committee portfoliocash plus the value of everything held

$132,819

+$32,881 · +32.90% · +27.90% vs SPY

verdictsarena NO-GOcommittee NO-GO

last arena updateone decision round, hourly

1h ago

running on schedule

Some recent AI agent decisions did not come through and were recorded as no action, so those hours do not reflect real decisions.

Crypto arena

NO-GO

stake: $10,000 each
traders: 3 AI agents, 4 fixed rules
AI agents follow: no set strategy
decides: hourly
beat: buy-and-hold bitcoin
since: 6 Oct 2026

Standings

total return each hour, after costs

buy and hold BTC + ETH
buy and hold bitcoin
claude haiku
claude sonnet
moving-average crossover
gpt-4o
random

leader

+0.00%

+$0 · claude haiku

hours runone decision round, hourly

136

AI running cost

$2.08

$0.015 per cycle

checks passed

2/3 passing

all must pass before real money

A recent decision

a recent AI agent decision, with its reasoning

all decisions

claude haikuHOLD BTCcycle 136 · 1h ago

API unavailable (BadRequestError). Recorded as HOLD; this is not a model trading decision.

arena detail

Equity committee

NO-GO

stake: $100,000 portfolio
agents: 6 rule-based decide, 3 AI review
screens: nightly
plans: night before the monthly trade
trades: first trading day of the month
since: 18 Jul 2026

Portfolio value

updated with closing prices each night

book
buy-and-hold SPY

portfolio valuecash plus the value of everything held

$132,819

+$32,881 · +32.90% · +27.90% vs SPY

holdings

largest VLO at 13.1%

days tracked

updated nightly

checks passed

2/4 passing

all must pass before real money

committee detail

Verdict

what NO-GO means

Each system is graded against a fixed list of conditions, published on its own page: enough history to judge, a clear lead over the benchmark, losses inside the limit, and a record of running on schedule. A system that fails any one of them is marked NO-GO and keeps trading with practice money. Nothing here switches to real money on its own.