Skip to content

Finfluencer Research

What I Learned From 16,701 Jim Cramer Stock Picks

There is a popular online joke called "Inverse Cramer." The idea: if Jim Cramer says buy on TV, do the opposite, and you'll make money.

It's a fun meme. But is it actually true?

To find out, I analyzed every buy-side stock recommendation the finfluencers.trade pipeline extracted from Jim Cramer's CNBC show Mad Money between January 2018 and December 2024 — 16,701 calls in total — and tracked what happened to each stock afterwards.

The result is more interesting than the meme.

The full working paper is on SSRN. The data and scripts are public on GitHub.

Critique of 2024 paper "Highly Regarded Investors? Mining Predictive Value from the Collective Intelligence of Reddit's WallStreetBets" by Buz et al..

Introduction

Can the collective chatter of online forums like Reddit's r/WallStreetBets (WSB) actually predict stock market moves? This question challenges the long-held Efficient Market Hypothesis (EMH) 1, which states that all public information is already baked into stock prices. The explosion of communities like WSB, capable of shaping investor sentiment at lightning speed, suggests that behavior-driven opportunities might exist, at least temporarily. The real challenge is scientifically separating a true predictive signal from all the noise.

This blog post critically reviews the 2024 paper, "Highly Regarded Investors? Mining Predictive Value from the Collective Intelligence of Reddit's WallStreetBets" by Buz et al.2. While the paper builds a profitable trading model, I argue its methodology is fundamentally unsuited to prove that WSB data alone has predictive power. My analysis will show that the model's impressive results are overwhelmingly driven by traditional financial data—specifically investment bank ratings and price history—not the unique "collective intelligence" of Reddit. The paper doesn't isolate a new signal; it validates a hybrid strategy where social media acts as a trigger within a classic quant framework.

The Finfluencer Mirage

Navigating the world of online financial advice can feel like searching for a life raft in a stormy sea. Everywhere you turn, "finfluencers" promise quick tips and pathways to prosperity to their vast digital followings. But what if the loudest voices aren't the wisest? What if popularity is a misleading beacon, potentially luring unsuspecting investors towards financial reefs instead of safe harbors?

Understanding Finfluencer Impact on Investors

Financial influencers, or 'finfluencers,' wield significant influence, especially among younger investors. But how much do they actually impact investment decisions? This post dives into the key findings of a study by the St. Pölten University of Applied Sciences & Paradots, published in January 2023. Their research surveyed hundreds of young followers of German-speaking finfluencers, offering valuable insights into trust, influence, and the motivations driving engagement in this space.