Kevin Xu | From $35K to $10M: The Alpha Behind Your Next Bet

You’re listening to Startup Growth Podcast. Today we’re joined by Kevin Xu, founder and CEO of Alpha AI—thanks for coming on, Kevin. Let’s start with your origin story.

In high school it hit me that real people build the tools I loved, and that pulled me to Silicon Valley. I hustled through Stanford, met founders and VCs, barely graduated, and stayed laser‑focused on startups.

Did YC enter the picture while you were there?

Yes—Summer 2013. We faced a tough, second‑round grilling from the OG partners and got in, then quickly pivoted from a coding‑ed idea to a creator fan‑club product. We ran out of money, I realized I do my best work when I’m personally obsessed, and I went to Stripe to learn from world‑class builders.

Fast forward to your finance chapter and WallStreetBets—when did that start and what drew you in?

I stumbled onto it in 2018 via a viral options win, lost money trying to copy it, then the pandemic pulled me back. The draw was the characters, radical transparency, and internet‑native learning, so I created the alias Sir Jackalot and posted every trade, which snowballed into a following and real‑time feedback.

You famously turned 35,000 dollars into 10 million dollars. What did that ride actually look like?

It was violent—seven‑figure swings in a day—because my style was concentrated momentum swings: pick one name, go deep, then rotate. The seed was a quirk at Google where my bonus defaulted into a self‑directed 401(k); I couldn’t touch it easily, so I took big shots during early COVID—first APT masks, then a Utah PCR test name—took profits, then chased reopening and pet e‑commerce pops while sharing receipts for feedback and new ideas.

And what happened around GameStop—you were early but didn’t catch the squeeze, right?

In October 2020 I put about 1.3 million dollars into GME on the console cycle plus Ryan Cohen’s pressure on the board. Earnings were dull, holidays loomed, so I moved on in December with a small gain—then the rocket launched; the thesis was right, my timing wasn’t.

You even ended up in a documentary. How did that come together?

Media circled in 2021, but only one project let me keep my pseudonym. I told the story wearing a knight’s helmet to match my handle, and it became a fun time capsule of that moment.

Post‑mania, how did you make the run to eight figures?

I had periods of flat and wild days—like a one‑day million‑plus pop on RKT, then giving it back. The 401(k) penalties made it feel like locked play money, which oddly helped me stay unemotional; I then lucked into four earnings wins in a row and finished with a Big 5 Sporting Goods special dividend trade that put the account at eight figures. I learned my screenshot rule: if you’re proud enough to capture it, you should probably hit sell.

When did the idea for After Hour take shape?

In 2022 I left Google, watched finance morph into everyday entertainment, and saw WSB hit its limits as a subreddit. I built a social investing app where you can follow real accounts and verify trades via Plaid; we launched in early 2023.

Now you’re launching Alpha AI to help people invest better. What is it and what’s next for wealth management?

Alpha AI is an always‑on money copilot plugged into live market data so advice is timely and contextual; today it’s read‑only, and over time it will be able to act with your permission. I think the future is proactive guidance in your pocket, not passive dashboards.

What does your company’s finance stack look like now?

I keep it simple: Fondo for taxes and Brex for cash management and cards, with minimal overhead and clear updates so I can focus on product.

We also saw your Alpha content made with Sora—what’s the play there?

Consumer growth in 2025 is attention‑driven, so I experiment quickly with new formats and lean into what’s fresh before the crowd arrives. Startups can take creative risks because there’s little to lose and a lot to learn.

Where can people find you and Alpha online? Love it—thanks so much for joining us today, Kevin.