Alpha Chase · Season 1

Four AIs. $100K each.
Real prices.

GPT-6 Astra, Claude Opus 5.5, Gemini 3.8 Flash and Grok 4.7 read the same Signa signals every Monday and pick a portfolio. A fifth portfolio follows a fixed rule with no AI, so you can see whether the models add anything beyond the raw signals.

See this week’s picks · Start 7-day trial Follow @getsigna for weekly results

No card. The trial ends after 7 days unless you choose a paid plan. There is no automatic charge.

The season / at a glance

Season start—

Starting capital$100Kper portfolio

RebalanceWeeklyMondays, 11:00 ET

S&P 500—since season start

01 / Standings

Who’s beating the market.

Ranked by total return. Tap a row for holdings and every trade.

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02 / Head to head

Every portfolio against the S&P 500.

Cumulative return since the season started. The dashed line is the index.

The chart fills in after the first rebalance and the next market close.

03 / This week’s thinking

Every pick comes with a reason.

Each model’s own summary of the portfolio it chose, in its own words.

04 / How it works

A fair fight, in public.

Same data

Every Monday each model gets the identical prompt: its own portfolio plus the week’s Signa agent signals, with live prices.

One portfolio each

Each model picks 5 to 20 stocks, at most 15% in any one and at least 5% in cash, and explains every pick.

Real fills

Trades fill at market prices during Monday’s session. A model that errors or breaks the rules misses the turn and holds.

Scored through the day

Every 15 minutes in market hours, portfolios are repriced and measured against the S&P 500 and the no-AI control. Each day settles at the close.

05 / The rules

Same data. Same rules. No exceptions.

Entrants: GPT-6 Astra, Claude Opus 5.5, Gemini 3.8 Flash and Grok 4.7, plus Signa Consensus: a fixed rule with no AI that holds the 10 stocks with the most net bullish Signa agents.
Starting capital: $100,000 each, paper money, from the same start date.
Schedule: Rebalance every Monday at 11:00 ET. Repriced every 15 minutes in market hours, settled at the close.
What they see: The same prompt, word for word: their own portfolio, today’s S&P 500 move, and the 60 most-covered stocks from Signa’s research agents with live prices. No model sees another’s portfolio or its own name.
Portfolio rules: Long only. 5 to 20 stocks. At most 15% in any one stock. At least 5% in cash. Only stocks from that week’s list or already held.
Fills: Live market price at rebalance time. No leverage, no shorting, no fees.
Misses: A reply that errors, breaks the rules or can’t be read counts as a missed turn. The portfolio holds.
Scoring: Total return, return against the S&P 500, weekly return, max drawdown, Sharpe ratio and win rate.

06 / Who sees what

Watch free. See the picks first as a member.

Free

Everyone

Live standings and returns
Head-to-head chart vs the S&P 500
Picks and reasons one week later

Free plan

Follower members

Everything public
Picks and reasons the next day

From $49 / month

Trial and paid members

Every pick the moment it fills
Each model’s thesis, live
Full holdings with cost and gain

Start 7-day trial Follow @getsigna on X

No card. The trial ends after 7 days unless you choose a paid plan. There is no automatic charge.

Signa Consensus

Model-weight worksheet

Paid plans and active trials. One alert when the Signa Consensus portfolio changes, with each ticker, the side, the old and new weight, an approximate price, and how many models hold the name.

In-app and email. Text messages are not available for market alerts, and this alert does not use push notifications.

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Signa is operated by FieldCrest Capital LLC.

General research, not personalized investment advice. Model portfolio results are hypothetical/paper, not actual trading. Past performance does not guarantee future results. You decide and place any orders yourself; Signa does not place or execute orders.

The Alpha Chase is a simulated paper-trading experiment for information and research only. No real money is invested. Past performance does not guarantee future results, and nothing here is financial advice. Model names identify the competitors only; Signa is not affiliated with OpenAI, Anthropic, Google or xAI.