The hottest Short selling Substack posts right now

And their main takeaways
Category
Top Crypto Topics

The Bear Cave #315

The Bear Cave • 1492 implied HN points • 01 Mar 26
💰 Finance Short selling
  1. Multiple activist and short-seller reports this week accuse several companies of overvaluation, accounting tricks, regulatory or safety issues, and overstated asset quality.
  2. A string of high-profile departures — especially CFOs — at smaller public companies suggests notable leadership turnover and potential instability in those businesses.
  3. The newsletter highlights a flurry of social media posts and screenshots, showing that tweets and public reports are driving market narratives and investor attention.

The Bear Cave #314

The Bear Cave • 1796 implied HN points • 22 Feb 26
💰 Finance Short selling
  1. Activist and research reports claim some companies are overstating businesses or data, pointing to possible accounting issues, overvaluation, and opaque loan-sale practices.
  2. A wave of recent executive departures highlights governance and operational stress across industries, from crypto firms and manufacturers to a major hotel board member stepping down after scandal-linked revelations.
  3. Market dynamics are shifting fast: AI hype and record-fast startup growth are changing how investors act, while new trading venues and strains in private credit liquidity are adding fresh risks and opportunities.

The Bear Cave #313

The Bear Cave • 933 implied HN points • 15 Feb 26
💰 Finance Short selling
  1. Activist and short-seller reports accuse companies such as Super Group, BigBear AI, Archer Aviation, and Syntec Optics of accounting problems, misleading disclosures, or governance failures, and claim these issues could materially overstate profitability or render companies uninvestable.
  2. A spate of sudden C‑suite and senior departures — including at GEO Group, Ecarx, Radian, Kyndryl, and Goldman Sachs — points to turnover and potential governance or operational stress, with some departures coinciding with filing delays and other red flags.
  3. Market chatter and data show new structural threats: prediction markets are pressuring incumbent sportsbooks like DraftKings, AI product moves and acquisitions invite skepticism about execution, and shifts like GLP‑1 weight‑loss drugs are changing consumer demand while SEC FOIA logs hint at possible regulatory scrutiny.

Top Links 935 What hedge funds are shorting. The electrotech revolution. Monroe Doctrine 2.0 & how Napoleonic mathematicians brought the blackboard to America.

Chartbook • 414 implied HN points • 28 Nov 25
💰 Finance Short selling
  1. Hedge funds are increasingly betting against utility companies, which shows a rise in their short interest. This may indicate that investors are worried about the future of these companies.
  2. There's a significant focus on the electrotech revolution, suggesting big changes and advancements in technology are on the horizon.
  3. The concept of 'Monroe Doctrine 2.0' ties into historical mathematics and its influence on America's educational landscape, highlighting the ongoing impact of past ideas on modern society.

The Bear Cave #286

The Bear Cave • 653 implied HN points • 10 Aug 25
💰 Finance Short selling
  1. Recent reports have raised serious concerns about companies like Marex Group and Collective Mining, suggesting they might be involved in fraud or mismanagement.
  2. A number of high-level executives, including CFOs, have recently resigned from several companies, which could indicate instability or deeper issues within those organizations.
  3. There is increasing scrutiny on U.S.-listed Chinese companies for potential fraud, and a new site has been launched to expose these stock promotion schemes.
Get a weekly roundup of the best Substack posts, by hacker news affinity:

The Bear Cave #285

The Bear Cave • 536 implied HN points • 03 Aug 25
💰 Finance Short selling
  1. A recent article warned about Pheton Holdings, saying it might face a major stock drop, which indeed happened with the stock falling by around 95%. This shows how powerful financial reports can influence stock prices.
  2. Several companies are experiencing high-level resignations, indicating potential issues within their management or business strategy. It's important to keep an eye on such changes as they can signal deeper problems.
  3. Activist research reports suggest some companies might be losing market share quickly, as seen in the case of Liquidia taking share from United Therapeutics. This suggests that competition in industries can shift rapidly.

Letter #152: Steve Eisman, Danny Moses, Vincent Daniel, and Porter Collins (2024)

A Letter a Day • 176 implied HN points • 03 Feb 24
💰 Finance Short selling
  1. Four 'Big Short' traders from FrontPoint Partners discussed their experiences and current perspectives on investing and short selling in the financial industry.
  2. They shared insights on their past trades like shorting Tesla and UPS, as well as their current high conviction trades and concerns about areas like commercial real estate.
  3. Despite changes in their approach and careers, these traders continue to monitor credit quality and consumer behavior as key indicators for the US economy.

The Dark Art of Short Selling (+ how to find shorts)

DeFi Education • 619 implied HN points • 22 Mar 23
💰 Finance Short selling
  1. Short selling lets you profit from a decrease in asset prices, but it comes with high risks. If prices rise instead of fall, you could lose a lot of money.
  2. You can short sell through different platforms and strategies, including centralized exchanges, which might be safer but also have their own risks. It's important to manage your risk and not invest more than you can afford to lose.
  3. Knowing how short selling works can help you make better decisions in the market, even if you don't plan to short yourself. It can guide you in recognizing when to hold or sell your investments.

A Must Watch

QTR’s Fringe Finance • 25 implied HN points • 25 Nov 25
💰 Finance Short selling
  1. Watch _The China Hustle_ documentary for insights into financial fraud, especially in the context of U.S.-listed companies. It's important for anyone involved in markets to understand these issues.
  2. The documentary focuses on fraud in Chinese companies, but it highlights similar problems in the U.S. market too. Many companies are not accurately reporting their finances.
  3. Real research into these issues is rare, especially among investment banks that want to maintain relationships with companies they cover. Be cautious and do your own due diligence.

Bitcoin's security spend is not looking good

Senatus’s Newsletter • 39 implied HN points • 10 Jul 23
🔮 Crypto Short selling
  1. Bitcoin's security spending is decreasing in proportion to its market cap, making it vulnerable to attacks.
  2. As Bitcoin's block rewards decrease, security spending as a percentage of market cap also decreases, making attacks more profitable.
  3. Without a significant increase in fee income, Bitcoin's security vulnerability will worsen unless solutions like a tail emission are considered.

Longs For Shy Bears

QTR’s Fringe Finance • 11 implied HN points • 06 Jan 25
💰 Finance Short selling
  1. It's important to focus on short-term survival in investing, even if you have long-term goals. You need to manage risks carefully in the volatile market.
  2. There are signs of extreme behavior in trends like crypto and AI, but not acting rashly is key. Timing and proper planning are crucial to avoid losses.
  3. The investor expresses a desire to bet against market crazes but acknowledges that it requires careful strategy to be successful.

PureCycle Technologies: The Nikola of Recycling

funnybusiness • 0 implied HN points • 16 Aug 21
💰 Finance Short selling
  1. PureCycle Technologies executives failed to address critical allegations and instead doubled down on their ambitious projections.
  2. Insiders of PureCycle Technologies increased their pay-outs and could potentially sell 100% of their shares before the company generates any revenue, raising concerns about their commitment to long-term success.
  3. Red flags have been identified in the business model of PureCycle Technologies, including questionable supply chain agreements, unproven technology, and unrealistic rapid expansion plans.