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Wall Street traders believe the main reason for the sharp decline in U.S. stocks is the liquidation of hedge funds, with the market expecting multiple funds to face complete liquidation

In response to the sharp decline in U.S. stocks yesterday, most traders and analysts on Wall Street believe that the main reason is not a deterioration in fundamentals, but rather the liquidation by hedge funds. Noel Smith, Co-Chief Investment Officer of Kai Asset Management, stated: "It is extremely rare to see such a decline without significant market news. It smells like liquidation."In addition to the report last night by Bloomberg that multi-strategy hedge fund Walleye Capital will streamline its internal long-short equity business, the market generally expects several funds to be undergoing complete liquidation, or that the pods (independent investment teams) within multi-strategy funds are being forced to close positions or liquidate.According to a list released this morning by the well-known financial research community Special Situations, several hedge funds are facing difficulties, including Axebrook, Walleye, Engineers Gate, Lone Pine, Millennium internal pod, Verition pod, and Samlyn, mainly involving large redemptions, shutting down internal teams, or changing PMs.It is worth mentioning that during the major turbulence in the U.S. stock market in July this year, the AI hedge fund Situational Awareness also encountered a similar incident, with fund assets shrinking by 67%, and subsequently reached an emergency exit deal with Citadel, selling most of its publicly traded stock holdings at a discount.

GitBook Security Incident Review: Attack Targeting Trade.xyz, SSO Vulnerability Leads to Production Environment Breach

GitBook released a security incident review on November 2, stating that attackers exploited a vulnerability in its single sign-on process to forge employee login sessions, allowing them to query improperly configured GitHub App authentication information within the organization, access internal code repositories, and obtain Cloudflare API keys, ultimately gaining full production environment permissions through service accounts.GitBook disabled the relevant internal service accounts to cut off the attack within hours, resulting in the platform being offline for approximately 16 hours, and fully restored on November 3 at 11:56 UTC. The attackers remained in the production environment for a total of about 3 hours and 25 minutes. GitBook has rotated all infrastructure and revoked customer keys and API tokens.GitBook stated that current indications show the attack targeted a single customer rather than the platform as a whole, and no other customer content has been found to be tampered with. However, since the attackers could access customer data within the platform, they are treating it as if all customer data may have been exposed, including API tokens, integration keys, session signing keys, assistant Q&A records, and authorized repository permissions for GitHub and GitLab applications. Billing information, passwords, and IP addresses were not affected.GitBook noted that the speed and precision of the attack heavily relied on automation and AI. Slow Mist's Chief Information Security Officer 23pds forwarded the review, stating that the targeted entity was Trade.xyz. Trade.xyz previously indicated that the document anomaly stemmed from an intrusion into GitBook's infrastructure, and there were no signs of their own infrastructure being compromised, and they will migrate away from GitBook within a few days.

first_img Goldman Sachs restricts traders and bankers from using certain AI programming tools

According to Bloomberg, Goldman Sachs has restricted most employees from using advanced AI tools aimed at programming after evaluating production efficiency and risk management, leading to dissatisfaction among some employees. Internal guidelines were updated in October, and bankers had previously been able to use Anthropic's Claude Code and Microsoft's GitHub for several months, but the scope of these tools has now been narrowed to engineers.Sources say that some traders had used these tools to accelerate monitoring of client trading flows, modeling market changes and positions, as well as creating text and graphic content, and this restriction has left them feeling dissatisfied. Goldman Sachs' Chief Information Officer Marco Argenti stated in July that non-technical personnel such as traders and bankers had developed solutions using AI tools, which were then handed over to the company's approximately 12,000 engineers for improvement.Goldman Sachs spokesperson Nick Carcaterra stated that the company provides employees with certain AI tools to determine applicable scenarios in different businesses; after evaluating factors such as production efficiency and risk management during the trial period, the tools will be given to the most suitable personnel for long-term use. Additionally, sources indicated that the latest directive does not apply to strats who are simultaneously engaged in trading, quantitative research, and software engineering. Earlier this year, Goldman Sachs also restricted employees in Hong Kong from using Anthropic's Claude.
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