AI stock picking app: Dr. Lopez-Lira's GPT, Claude and DeepSeek Portfolios

Is there an app that picks stocks with AI? Inside Dr. Lopez-Lira's AI Portfolios, and how Rallies does it differently

I'm Chris, one of the co-founders of Autopilot. Yes, you can follow a Portfolio where an AI model picks the stocks, right inside the brokerage account you already have.

Definitely no AI expert here. But I know who is.

One of the longest-running AI Portfolios on Autopilot comes from Dr. Alejandro Lopez-Lira, a finance professor at the University of Florida. As of October 8, 2026, about $263 million follows Dr. Lopez-Lira's Portfolios.

The other one worth knowing is Rallies, which gives each AI model its own Portfolio and lets it trade on its own.

Let me explain.

1) Who Dr. Lopez-Lira is

For those unaware, Alejandro Lopez-Lira is an assistant professor of finance at the University of Florida's Warrington College of Business. PhD in finance from Wharton, 2020.

Dr. Lopez-Lira is best known for a paper written with Yuehua Tang called Can ChatGPT Forecast Stock Price Movements? Return Predictability and Large Language Models.

Here's the timeline:

• April 15, 2023. The paper goes up.
• April 20, 2023. Five days later, the GPT Portfolio goes live on Autopilot.

The test in that paper was simple. Take news headlines published after GPT-4's training cutoff, so the model couldn't have seen them. Ask it whether each one is good or bad for the stock. Then compare its answers with what the stock actually did.

The paper reports that GPT-4's scores predicted the market's first reaction, and some of the drift after it, mostly in small stocks and on bad news.

It also reports that the effect shrinks as more investors use these models.

That last part matters. An edge everyone can copy doesn't stay an edge for long. Credit to Dr. Lopez-Lira for putting that in the paper.

2) How the GPT Portfolio picks stocks

This isn't someone typing "what should I buy" into ChatGPT. The Portfolio's description lays out the actual method:

1. Gather fundamental data on every stock in the S&P 500.
2. Pair it with eight macroeconomic data points, like interest rates, unemployment, and national headlines.
3. Turn that into a score for each stock.
4. Hold the top 15. If there's a tie for the last spot, take the one with the largest market cap.
5. Rebalance every month, and share the analysis of the picks when it does.

To put that into context, the model isn't free-styling. It's the scoring engine inside a fixed process. The universe is the S&P 500. The size is 15 stocks. The schedule is monthly.

The full method is in Dr. Lopez-Lira's white paper, which is linked from the Portfolio in the app.

3) The rest of the lineup

Dr. Lira's AI Finance Labs publishes eight live Portfolios on Autopilot.

Same scoring idea, different model:

• DeepSeek Portfolio, on Autopilot since January 29, 2025. Same grading system as the GPT Portfolio, with DeepSeek calculating the scores. Rebalanced monthly.
• The Grok Portfolio, since February 4, 2025. Grok picks 15 stocks or ETFs. Everything is held for a month, then a full month-end analysis picks the next 15.
• Muse Portfolio, since September 30, 2026. Same grading approach, using Meta's Muse. It rebalances when Muse decides to.

A different approach:

• Claude Portfolio, since March 3, 2026. Claude Opus/Fable (depending on which model is best at any given time) runs a multi-agent research setup driven by web search. It holds 15 to 20 stocks or ETFs, and Claude decides on its own when to trade and how often.

Themes:

• AI World War III Portfolio, since October 30, 2023. Defense and aerospace companies, picked by asking GPT how markets react to geopolitical tension.
• AI Recession Portfolio, since August 18, 2023. GPT-4 paired with macro data to pick assets meant to hold up in downturns.
• AI ❤ BTC: LLM + Crypto, since March 13, 2025. ChatGPT and Grok pick US-listed bitcoin and crypto-related ETFs and stocks. No fixed weights. No leverage.

But Dr. Lopez-Lira isn’t the only Pilot running AI Portfolios on Autopilot. Rallies is the other one worth knowing, and it takes a slightly different approach. If you’re picking an AI Portfolio, that difference matters more than which model’s name is on it.

4) How Rallies does it differently

Rallies runs what it calls the Arena. Its description on Autopilot says the AI models "each manage their own live portfolios, making investment decisions in real time with transparent reasoning."

Each model gets a big research toolkit: SEC filings, earnings data, hedge fund holdings, options flow, short interest, technical indicators, news, Reddit, and more.

Each one runs its own research and writes its own thesis for every trade.

I respect that.

Rallies publishes seven Portfolios on Autopilot:

• ChatGPT, Claude, Gemini, Grok, and AI Hedge Fund, all added March 30, 2026.
• Muse, added September 14, 2026.
• AI Skeptic, which tries to reverse the frontier model's thinking.

Here's the difference in one line. With Dr. Lopez-Lira, the model scores stocks inside a fixed process. With Rallies, the model is the whole process.

5) “The Claude Portfolio” (Dr. Lopez-Lira), vs “Claude” (Rallies)

This trips people up.

There's a Claude Portfolio and a Portfolio called Claude. They're not the same thing. They come from different Pilots, with different methods. Check the Pilot's name before you follow anything.

6) So which AI is best?

I don't know. Nobody does yet.

The oldest one here, the GPT Portfolio, started on April 20, 2023. Most of the rest are under two years old. Some are weeks old. That's too short to tell skill from luck.

And Dr. Lopez-Lira's own paper says the edge from these models shrinks as more people use them.

So don't compare the model. Compare how it's used:

1. Fixed process or free agent. Dr. Lopez-Lira's GPT, DeepSeek, and Grok Portfolios score a set universe on a schedule. Rallies' models, and Dr. Lopez-Lira's Claude Portfolio, decide what and when on their own.
2. The universe. The GPT Portfolio picks from the S&P 500. Rallies' models can look at anything their toolkit covers.
3. Turnover. A monthly rebalance and a model that trades whenever it wants will feel very different in your account.
4. Time. Each Portfolio's performance chart in the app starts when it was added to Autopilot and is built from follower accounts. Check the start date before you compare two of them.

One more thing. Autopilot doesn’t design these Portfolios. Pilots do. The AI is the Pilot's tool.

7) How following one works

It really is just three steps.

Step one, you connect the brokerage account you already have. Step two, you pick a Portfolio. Step three, you allocate the money.

You give Autopilot Advisers limited authority to send orders to that account. When the Portfolio changes, we send them and your broker fills them. The money stays put.

I want to be honest with you. Some Portfolios go up for years. Some are flat for years. A model is a method, and a method can be wrong.

Do the research on the Pilot, not just the model. Read the description, look at the holdings, and check how long it's been running.

TLDR: Yes, you can follow AI-picked Portfolios on Autopilot in your own brokerage account. Start with Dr. Alejandro Lopez-Lira, the University of Florida finance professor whose 2023 paper tested whether ChatGPT could read stock news. The GPT Portfolio scores the S&P 500 and holds the top 15, rebalanced monthly, and about $263 million follows Dr. Lopez-Lira's Portfolios. Rallies takes the other approach and lets each model research and trade on its own. Nobody can say which AI is best yet, so compare the method, the turnover, and how long each has run.

Frequently asked questions

Is there an AI stock picking app?

Yes, Autopilot. You can follow Portfolios where an AI model picks the stocks, in the brokerage account you already have. The two main Pilots are Dr. Lira's AI Finance Labs, run by University of Florida finance professor Alejandro Lopez-Lira (PhD, Wharton), and Rallies, whose Arena gives each model its own Portfolio. You connect your broker, pick a Portfolio, and allocate money. When it changes, Autopilot Advisers sends the orders and your broker fills them.

Which AI is best at picking stocks?

Nobody can tell you yet. Dr. Lopez-Lira's GPT Portfolio, the oldest of the AI Portfolios covered here, started April 20, 2023, and most others are under two years old. That's too short to separate skill from luck. Compare the method instead: Dr. Lopez-Lira's GPT, DeepSeek, and Grok Portfolios score stocks in a fixed monthly process, while Rallies' models research and trade on their own. Then check each one's start date on its performance chart in the app.

Is AI stock picking legit?

There's real research behind it. Dr. Lopez-Lira's 2023 paper with Yuehua Tang found GPT-4's read of news headlines predicted how stocks first reacted, and that the effect shrinks as more investors use these models. That's a finding about headlines, not a promise about any Portfolio. The practical test is whether you can see the method, the data, and who runs it. Dr. Lopez-Lira's Portfolios link white papers, and Rallies says each model writes a thesis for every trade.

Can ChatGPT pick stocks?

It can rank them, and that's how Dr. Lopez-Lira's GPT Portfolio uses it. The Portfolio gathers fundamental data on every S&P 500 stock, adds eight macroeconomic data points like interest rates and unemployment, scores each stock, and holds the top 15, rebalanced monthly. Whether a model picks well over years is a different question, and the GPT Portfolio's record on Autopilot goes back to April 20, 2023.

Is there a ChatGPT stock portfolio?

There are two on Autopilot, and they work differently. Dr. Lopez-Lira's GPT Portfolio has been live since April 20, 2023. It scores the S&P 500 with fundamental and macro data and holds the top 15, rebalanced monthly. Rallies' ChatGPT Portfolio, added March 30, 2026, lets the model research filings, earnings, and news and decide on its own what to buy and sell. Check the Pilot's name before you follow either one.

What is the best AI investing app?

I'm not going to rank apps. Here's what I'd check in any of them: whether the AI's method is written down, whether your money stays in your own brokerage account, how long each AI Portfolio has actually run, and who's responsible for it. On Autopilot, the AI Portfolios come from Pilots like Dr. Lira's AI Finance Labs and Rallies, and each one's page shows its method, its holdings, and its performance chart.

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"Autopilot" refers to Autopilot Holdings Corp and Autopilot Advisers, LLC, an SEC-registered investment adviser. The GPT Portfolio, DeepSeek Portfolio, The Grok Portfolio, Claude Portfolio, Muse Portfolio, AI World War III Portfolio, AI Recession Portfolio and AI ❤ BTC: LLM + Crypto strategies are managed by Dr. Lira's AI Finance Labs, an independent Third-Party Pilot. The ChatGPT, Claude, Gemini, Grok, AI Hedge Fund, Muse and AI Skeptic strategies are managed by Rallies, an independent Third-Party Pilot. Third-Party Pilots are unaffiliated with Autopilot and Autopilot does not manage, validate, or guarantee their portfolios. Not a recommendation. Past performance is no guarantee of future results; investing involves risk of loss. Figures current as of 10/08/26. View important info at joinautopilot.com/disclaimer.