Short interest tells you how many shares of a stock are currently being borrowed and sold short. When it rises sharply, it can mean more traders are betting against a company. When it falls fast, a short squeeze could be building.
The problem is that short interest data gets updated twice a month, and most people miss the update entirely.
Why Short Interest Actually Matters
Short interest is not just for hedge funds. Retail investors use it to spot:
- Stocks that could squeeze if good news hits
- Companies under growing pressure from bearish bets
- Shifts in market sentiment on a stock you already own
A stock with very high short interest (say, over 20% of its float) is more sensitive to news. One positive earnings surprise or contract win can send it up fast. One bad headline can confirm the bears and send it lower. Either way, you want to know when the number moves.
The Two Updates Most People Miss
FINRA publishes short interest data twice per month, usually around the 9th and 25th. Most financial sites post it, but they don't alert you. You'd have to remember to go check every two weeks, search for your specific tickers, and compare the new number to the old one yourself.
That's a lot of manual work for something that could take a few seconds if it came to you.
How to Set Up Automatic Short Interest Tracking
You can set up a scheduled report to watch this for you. With a tool like AIDular, you write what you want tracked in plain English, pick a schedule, and get a clean email summary instead of hunting through websites.
Here's a copy-paste prompt you can use:
"Every two weeks on Monday morning, search for the latest short interest data for TSLA, GME, SOFI, and RIVN. Show me the current short interest percentage, how it changed from the previous report, and any news in the last two weeks that might explain the change. Include the data source."
AIDular will search the web on schedule and email you a sourced report. You don't have to remember when FINRA publishes the data or go look it up yourself.
What to Actually Look for in the Report
When you get your short interest update, focus on these three things:
- Big jumps up (more than 3-4 percentage points): More traders are piling in against this stock.
- Big drops: Shorts are covering, which means buying. This can push prices up.
- High absolute level: Anything above 15-20% of float means the stock is heavily shorted and can be volatile.
Pairing this with recent news helps a lot. A rising short interest alongside a weak earnings report makes sense. A rising short interest on a stock with strong fundamentals is worth a closer look.
Keep It Simple
You don't need to become an expert in short selling to use this data. You just need to notice when something changes on a stock you're watching, and have enough context to ask better questions before making any moves.
A bi-weekly automated report is a clean, low-effort way to stay informed without adding another site to your daily routine.
The Lite plan on AIDular is free, so you can set this up today without spending anything.
This post is for general information only and is not financial advice. Always do your own research before making any investment decisions.