Expand model tag support: add GLM-5.1, simplify Anthropic IDs, scan tags anywhere in message

- Flink update_bars debouncing
- update_bars subscription idempotency bugfix
- Price decimal correction bugfix of previous commit
- Add GLM-5.1 model tag alongside renamed GLM-5
- Use short Anthropic model IDs (sonnet/haiku/opus) instead of full version strings
- Allow @tags anywhere in message content, not just at start
- Return hasOtherContent flag instead of trimmed rest string
- Only trigger greeting stream when tag has no other content
- Update workspace knowledge base references to platform/workspace and platform/shapes
- Hierarchical knowledge base catalog
- 151 Trading Strategies knowledge base articles
- Shapes knowledge base article
- MutateShapes tool instead of workspace patch
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---
description: "An illegal lending practice involving loans at excessively high interest rates without collateral, enforced through coercion; documented here for educational and awareness purposes only."
tags: [cash, illegal, lending, awareness]
---
# Loan Sharking
**Section**: 17.6 | **Asset Class**: Cash | **Type**: Illegal activity (documented for educational/awareness purposes only)
## Overview
Loan sharking consists of offering loans at excessively high — often usurious — interest rates. Unlike pawnbroking, loan sharking in many jurisdictions is illegal, and the loan is not necessarily secured by collateral. This activity is documented here solely for educational and awareness purposes. It is not a legitimate trading strategy and constitutes criminal conduct in most jurisdictions.
## Construction / Mechanics
**Loan structure:**
- Cash is lent to a borrower at interest rates far above legal usury limits — rates can be expressed in weekly or daily terms (e.g., "2 for 1" means repay double within a fixed period)
- No formal legal documentation is typically used; the arrangement is informal and unenforceable through normal legal channels
- The loan is typically unsecured — there is no collateral pledge
**Enforcement:**
- Because the loan cannot be enforced through the legal system, the lender (loan shark) may resort to extralegal means of enforcement
- This can include blackmail, threats, and physical violence to compel repayment
- The borrower has no legal recourse against abusive enforcement methods
**Relationship to legitimate lending:**
- Loan sharks operate in the same economic niche as payday lenders and pawnbrokers but without legal constraints on rates or enforcement methods
- They typically serve borrowers with no access to formal credit (e.g., due to criminal records, immigration status, or existing debt)
## Return Profile / Objective
The stated "return" is the extremely high interest charged. In practice, the loan shark often profits more from the coercive control over the borrower than from pure interest income — borrowers may be exploited for labor or other services. The high nominal returns are offset by significant legal, personal safety, and operational risks.
## Key Parameters / Signals
- **Interest rate**: typically far above legal usury limits; often quoted in short-period terms to obscure the true APR
- **Enforcement mechanism**: the primary differentiator from legal lending; ranges from social pressure to physical violence
- **Borrower desperation**: loan sharks target individuals with no alternative credit access
- **Rollover/compound traps**: unpaid interest may compound rapidly, trapping borrowers in escalating debt
## Variations
- **Organized crime lending**: loan sharking as a service offered by criminal organizations, often linked to other illegal activities
- **Predatory lending (grey area)**: legal but extremely high-rate lenders (payday loans, rent-to-own) operating at the edge of legality
- **Salary lending / advance-fee lending**: informal arrangements common in some developing markets
## Notes
Loan sharking is **illegal** in most jurisdictions. It is documented here exclusively for educational purposes — to illustrate the spectrum of cash-based financial activities, support awareness of predatory lending, and assist in compliance or regulatory analysis. Any actual participation in loan sharking carries severe criminal penalties including imprisonment. The key distinction from legal high-rate lending (e.g., payday loans) is the use of illegal coercion and the absence of legal licensing and rate-cap compliance.