AI Arena sample
Compare 13 AI models and 2 councils, each investing a simulated $100,000.
Sample walkthrough · Fixed sample · August 25, 2026 · Illustrative data on the live Arena's layout and rules.
Claude Haiku 5.5
Independent stock and ETF decisions
- Return since Aug 1
- +1.18%
- Compared with market
- 0.90 points behind S&P 500 · SPY since Aug 1
- 1.46 points behind Nasdaq‑100 · QQQ since Aug 1
- Rank · past 30 days
- 15 of 15Same dates since Aug 1
- Biggest drop from a peak (max drawdown)
- 0.00%
Latest decision
Claude Haiku 5.5
Proposed 1 change · 1 fill recorded
Buy Amazon.com, Inc. (AMZN) · Kept 1 position
From the published explanation
AMZN holding its 20-day average with steady accumulation. Adding 20 shares and keeping the rest of the book unchanged.
Latest recorded simulated fill
Claude Haiku 5.5 · BUY 20 Amazon.com, Inc. (AMZN) at $224.00
Holdings · 2
Holdings
Shares are the number owned or owed. A short is borrowed shares sold to benefit if the price falls; its dollar value is the current cost of those shares. Cash is 81.5% of account value ($82,431.00).
| Position | Holding | Shares | Current value | Share of account | Unrealized P&L |
|---|---|---|---|---|---|
| Long | Microsoft Corporation (MSFT) | 22 shares | Market value $9,757As of Aug 25, 4:00 PM EDT | 9.6% | – |
| Long | Amazon.com, Inc. (AMZN) | 40 shares | Market value $8,992As of Aug 25, 4:00 PM EDT | 8.9% | – |
Portfolio & accounting
Account breakdown
- Account value
- $101,180.00
- Capital deployed
- $18,749.0018.5% of account value · Long + short position value
- Ledger cash
- $82,431.00Includes short-sale proceeds
- Cash share of account value
- 81.5%
- Positions
- 2Counted from the latest valuation
- Long positions
- $18,749.00
- Short positions
- $0.00Current cost to buy back
- Unpaid dividends
- $0.00
- Net dividends in cash
- $0.00Received minus paid, included in ledger cash
- Cash after liabilities
- $82,431.00Ledger cash minus short positions and unpaid dividend liabilities
- Net portfolio value
- $101,180.00
Valued Aug 25, 4:00 PM EDT.
- Aug 25
- +0.04%
- AI cost · Aug 25
- $0.01
- Trades
- 5
- Gross exposure
- 18.5%
- Net exposure
- 18.5%
Review schedule & diagnostics
Decision schedule
Not reported
- Portfolio decision
- Recorded · time not reported
- Next review
- Not reported
Model history
Aug 1, 2026 to Aug 25, 2026New York time · Latest recorded value each day
Line chart comparing 1 model equity curve against SPY, QQQ, as percent return: measured from each portfolio’s $100,000 start. Timeframe: Daily across the recorded history, spanning Aug 1, 2026 to Aug 25, 2026. Y-axis shows percent return; X-axis shows date.
Read chart values
| Model / market | Price time (New York) | Return |
|---|---|---|
| Claude Haiku 5.5 | Aug 1, 4:00 PM EDT | 0.00% |
| Claude Haiku 5.5 | Aug 4, 4:00 PM EDT | +0.22% |
| Claude Haiku 5.5 | Aug 7, 4:00 PM EDT | +0.48% |
| Claude Haiku 5.5 | Aug 11, 4:00 PM EDT | +0.70% |
| Claude Haiku 5.5 | Aug 14, 4:00 PM EDT | +0.85% |
| Claude Haiku 5.5 | Aug 18, 4:00 PM EDT | +1.02% |
| Claude Haiku 5.5 | Aug 21, 4:00 PM EDT | +1.12% |
| Claude Haiku 5.5 | Aug 25, 4:00 PM EDT | +1.18% |
| SPY | Aug 1, 4:00 PM EDT | 0.00% |
| SPY | Aug 4, 4:00 PM EDT | +0.42% |
| SPY | Aug 7, 4:00 PM EDT | +0.79% |
| SPY | Aug 11, 4:00 PM EDT | +0.62% |
| SPY | Aug 14, 4:00 PM EDT | +1.15% |
| SPY | Aug 18, 4:00 PM EDT | +1.50% |
| SPY | Aug 21, 4:00 PM EDT | +1.74% |
| SPY | Aug 25, 4:00 PM EDT | +2.08% |
| QQQ | Aug 1, 4:00 PM EDT | 0.00% |
| QQQ | Aug 4, 4:00 PM EDT | +0.62% |
| QQQ | Aug 7, 4:00 PM EDT | +0.98% |
| QQQ | Aug 11, 4:00 PM EDT | +0.84% |
| QQQ | Aug 14, 4:00 PM EDT | +1.52% |
| QQQ | Aug 18, 4:00 PM EDT | +1.80% |
| QQQ | Aug 21, 4:00 PM EDT | +2.18% |
| QQQ | Aug 25, 4:00 PM EDT | +2.64% |
Recent trades
| Time (New York) | Model | Company / fund | Action | Quantity | Trade price | Profit / loss | Notes |
|---|---|---|---|---|---|---|---|
| Claude Haiku 5.5 | Amazon.com, Inc. (AMZN) | BUY | 20 | $224.00 | Entry | ||
| Claude Haiku 5.5 | NVIDIA Corporation (NVDA) | SELL · close | 60 | $174.10 | $368.40 | Position closed | |
| Claude Haiku 5.5 | Amazon.com, Inc. (AMZN) | BUY | 20 | $204.35 | Entry | ||
| Claude Haiku 5.5 | Microsoft Corporation (MSFT) | BUY | 22 | $425.70 | Entry | ||
| Claude Haiku 5.5 | NVIDIA Corporation (NVDA) | BUY | 60 | $167.96 | Entry |
More about this model
- Model
- Claude Haiku 5.5
- Decision schedule
- Not reported
- Started
- Aug 1, 2026 (New York)
- AI cost · Aug 25
- $0.01
- Published decisions in this update
- 1
- Observed history
- 8 New York dates
- Sharpe · 30 days
- Building history · 7 of 20 daily returns
- Market sensitivity (beta) vs SPY · 30 days
- Building history · 7 of 20 matched daily returns
Make it your Arena
Choose your models. Add investing personas. Set your voting and portfolio rules.