For a potential short squeeze, a higher "days to cover" (DTC) ratio signals greater risk for short sellers, with values of 5 or more often considered a candidate for a squeeze, while 8+ days indicates high potential volatility, as it shows it would take many days to repurchase all shorted shares, creating buying pressure if the price rises. DTC is calculated by dividing short interest by average daily trading volume, showing how long shorts have to cover, and a high number suggests liquidity issues for shorts.
The 3-5-7 rule in day trading is a risk management framework: risk no more than 3% of capital on a single trade, keep total exposure across all open trades under 5%, and aim for a minimum 7% reward-to-risk ratio (meaning your winning trades should be significantly larger than your losing trades), ensuring capital preservation and consistent profits. This strategy helps traders stay disciplined, avoid emotional decisions, and build a sustainable trading plan by focusing on quality setups and managing risk effectively.
There's no specific time limit on how long you can hold a short position. In theory, you can keep a short position open as long as you continue to meet your margin requirements. However, in practice, your short position can only remain open as long as your broker doesn't call back the shares.
It simply states that you can't sell shares of stock or other securities for a loss and then buy substantially identical shares within 30 days before or after the sale (i.e., for a 61-day period, since you count the day of the sale). If you do, the loss is disallowed for tax purposes.
The 90/90/90 rule in trading is a harsh statistic stating 90% of new traders lose 90% of their money in the first 90 days, highlighting the high failure rate due to poor risk management, emotional decisions, lack of a trading plan, and unrealistic expectations, often fueled by social media hype. To beat this, new traders must focus on discipline, learning fundamentals, creating a robust plan with stop-losses, and managing risk, treating trading as a long-term profession rather than a get-rich-quick scheme, say experts on LinkedIn and GoPocket.
Understanding how to interpret days to cover values is essential for applying the metric in real trading scenarios. A high days-to-cover value, typically 5 or more, suggests that it would take several days of average volume to close out all short positions.
You must close your positions on the same trading day before 3:20 PM, as you cannot hold equity short positions overnight.
Some short sellers choose to close their short positions before the stock's ex-dividend date to avoid having to pay. (As a reminder, the ex-dividend date is the first day a stock's price no longer includes the value of a declared dividend.
Look for Volatility. Unusually high volatility could be a sign that a short squeeze is about to happen. Higher volatility may be due to short sellers starting to exit their positions in a hurry. High volatility could also induce a short squeeze if short sellers see that a stock has a very high days to cover ratio.
The 2021 GameStop surge
In early 2021, a group of retail investors on Reddit's r/WallStreetBets triggered one of the most famous short squeezes in history. GameStop was a struggling video game retailer that had more than 140% of its public float sold short.
“Days to cover” is a metric that estimates how many days it would take short sellers to close all of their open short positions in a stock. It's calculated by dividing the total number of shares sold short by the stock's average daily trading volume.
In futures trading, the "80% Rule" typically refers to a Market Profile concept: if price opens outside the previous day's Value Area (the ~70% volume zone) and then re-enters and holds for two consecutive bars (e.g., 30 mins), there's an 80% chance it will move through the entire range of that value area, indicating a strong reversal/reversion to balance. It's a high-probability setup for day traders to anticipate a full retracement within the prior day's fair-value zone.
We measure duration as the number of consecutive days with short-squeeze events for a particular stock. We find that short-squeeze events are short-lived. Specifically, more than 90% of the market and more than 70% of lender short-squeeze events across both the US and the EU do not last longer than one day.
The 3-5-7 rule in trading is a risk management guideline: risk no more than 3% of capital on one trade, keep total risk across all trades under 5%, and aim for winning trades to be at least 7% larger than losing trades (or a 7:1 ratio) to ensure profits outweigh losses and protect capital. It promotes discipline, reduces emotional trading, and balances potential high rewards with controlled risk, making it great for beginners.
Some have interpreted this to mean investing 70% of a portfolio in stocks and 30% in bonds, although work-outs seem to suggest special situations, which differ from bonds. Either way, Buffett has given different investment advice to investors based on their experience.
Here's the reality: 97% of day traders lose money after 300 days. Only 1% achieve consistent profits after fees. 72% of retail traders end the year with losses, and 40% quit within a month.