Ever since the GameStop saga, I’ve kept an eye on Reddit — I’ll admit I even joined the WallStreetBets community. But to this day, somewhere between curiosity and greed, I still ask myself: should I actually listen to what I see on Reddit? The short answer is yes and no. The long answer is this week’s topic, because tonight I did the homework almost nobody does before weighing in: I checked what the academic evidence actually says, not just the anecdotes.

What’s actually real

Before “signal gurus” existed, there was an inconvenient finding for the permanent skeptics: a study published in Oxford’s The Review of Financial Studies found that recommendations on r/WallStreetBets significantly predicted future returns and cash-flow news —before 2021 (Oxford Academic). Another paper, published by ACM, concluded the community met several technical criteria to be considered a “collectively intelligent crowd” (ACM Web Science). This wasn’t pure coincidence or teenage rocket-emoji noise: there was real information circulating there, before the rest of the world caught on that it existed.

What nobody tells you

Here’s the part “rented lambo” influencers would rather you ignore: that same Oxford study found that predictive power disappeared after the GameStop episode. It didn’t fade gradually —it collapsed, right as the share of posts emphasizing “price pressure” and attention-grabbing tickers (rather than fundamentals) spiked. In plain terms: the exact moment the whole world started looking to Reddit for the next big play was the exact moment Reddit stopped having anything useful to say. That’s when the gurus showed up —people who don’t make a living investing, but selling the illusion that they do. Tonight, according to AltIndex and Adanos data —which, again, is a social-attention thermometer, not verified market fact—, Tesla, Apple, and Microsoft lead mentions on r/wallstreetbets, with Microsoft posting a 1,071% 24-hour spike. AltIndex’s Fear & Greed Index reads 45 (Fear). In other words: there isn’t even real euphoria to justify that much noise. There’s just a lot of people talking loudly at once —which is exactly what a signal-seller needs to look relevant.

How to separate the wheat from the chaff

This is where I apply the CRITERIO Method as a filter, not decoration:

Understand the context: before following anyone, ask whether that person makes money investing, or selling you the dream of investing well.
Reason from fundamentals: demand the thesis, not the ticker. If the post is just “🚀🚀🚀” with no financial reasoning behind it, it’s noise dressed up as signal.
Make decisions: social sentiment is an input —never the decision itself. A trending ticker is a cue to investigate, never a buy order.
Execute with excellence: ask for verifiable proof of results —real brokerage statements, not cropped screenshots.
Review the results: does that guru also post their losses, or only the wins? If you only see triumphs, you’re looking at marketing, not a track record.
Optimize the impact: the goal is your net worth, not a community’s validation.

The real opportunity

Social sentiment is genuinely useful —as a thermometer for where retail attention is pointing, useful for understanding what the street is talking about before traditional media catches up. What doesn’t work is replacing your own judgment with someone else’s mention count. Next time you see a ticker explode on Reddit or X, the question that matters isn’t “should I buy this?” —it’s “what evidence do I actually have, beyond the noise, to make that call?”

If this changed how you think about what you see on social media, the ViSFI Daily Briefing does this same exercise in judgment every day —central banks, the Fed, AI, and the markets that actually matter, without the noise.