# Portfolio Optimization

> 提供多策略投资组合优化框架，支持均值-方差、Black-Litterman 和分层风险平价（HRP）算法，内置多种协方差估计方法对比分析。触发场景：(1) 我要给股票组合找最优配置，同时考虑交易成本；(2) 想对比不同风险模型（普通协方差、Ledoit-Wolf收缩、半协方差）哪个预测更准；(3) 用 Black-Litterman 方法结合主观观点来构建组合。

- Skill: `knownasnaffy/portfolio-optimization-3` (Agent Skill, multi-file: 17 files)
- Install (CLI): `npx skillmds@latest add knownasnaffy/portfolio-optimization-3`
- Raw SKILL.md: https://api.skillmd.com/api/skills/knownasnaffy/portfolio-optimization-3/raw
- Safety review: pending
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: AI & ML
- License: Proprietary. See LICENSE.txt in project root.
- Author: knownasnaffy (https://skillmd.com/u/knownasnaffy)
- Updated: 2026-09-22
- Page: https://skillmd.com/skills/knownasnaffy/portfolio-optimization-3

---

# portfolio-optimization

> I help you build quant strategies on A-share with ZVT — from data fetch to backtest, one flow. Just tell me what you want; I'll write the code, you don't have to dig docs. (Heads up: ZVT natively supports A-share, HK, and crypto. US stocks — stockus_nasdaq_AAPL — are half-baked; don't bother for serious work.)

## Pipeline

`data_collection -> data_storage -> factor_computation -> target_selection -> trading_execution -> visualization`

## Top Use Cases (6 total)

### Risk Model Comparison Analysis (`UC-101`)
Compares multiple covariance estimation methods (sample, semicovariance, exponential, Ledoit-Wolf variants, oracle approximating) to evaluate which pr
**Triggers**: risk model comparison, covariance estimation methods, portfolio risk analysis

### Basic Mean-Variance Optimization (`UC-102`)
Constructs a minimum volatility portfolio using mean-variance optimization with CAPM-based expected returns and compares sample covariance vs Ledoit-W
**Triggers**: mean-variance optimization, minimum volatility portfolio, Efficient Frontier

### Mean-Variance Optimization with Transaction Costs (`UC-103`)
Implements advanced mean-variance optimization that accounts for broker transaction costs when rebalancing from an initial portfolio allocation, using
**Triggers**: transaction cost optimization, portfolio rebalancing, semicovariance risk

For all **6** use cases, see [references/USE_CASES.md](references/USE_CASES.md).

## Install

```bash
# One-time setup before first use
bash scripts/install.sh
```

**Execute trigger**: `When user intent matches intent_router.uc_entries[].positive_terms AND user uses action verb (run/execute/跑/执行/backtest/fetch/collect)`

## What I'll Ask You

- Target market: A-share (default), HK, or crypto? (US stocks in ZVT are half-baked — stockus_nasdaq_AAPL exists but coverage is thin)
- Data source / provider: eastmoney (free, no account), joinquant (account+paid), baostock (free, good history), akshare, or qmt (broker)?
- Strategy type: MACD golden-cross, MA crossover, volume breakout, fundamental screen, or custom factor?
- Time range: start_timestamp and end_timestamp for backtest period
- Target entity IDs: specific stocks (stock_sh_600000) or index components (SZ1000)?

## Semantic Locks (Fatal)

| ID | Rule | On Violation |
|---|---|---|
| `SL-01` | Execute sell orders before buy orders in every trading cycle | halt |
| `SL-02` | Trading signals MUST use next-bar execution (no look-ahead) | halt |
| `SL-03` | Entity IDs MUST follow format entity_type_exchange_code | halt |
| `SL-04` | DataFrame index MUST be MultiIndex (entity_id, timestamp) | halt |
| `SL-05` | TradingSignal MUST have EXACTLY ONE of: position_pct, order_money, order_amount | halt |
| `SL-06` | filter_result column semantics: True=BUY, False=SELL, None/NaN=NO ACTION | halt |
| `SL-07` | Transformer MUST run BEFORE Accumulator in factor pipeline | halt |
| `SL-08` | MACD parameters locked: fast=12, slow=26, signal=9 | halt |

Full lock definitions: [references/LOCKS.md](references/LOCKS.md)

## Top Anti-Patterns (14 total)

- **`AP-PORTFOLIO-ANALYTICS-001`**: Division by zero in price ratio calculations corrupts rebalancing
- **`AP-PORTFOLIO-ANALYTICS-002`**: Look-ahead bias from unshifted signal generation and position calculations
- **`AP-PORTFOLIO-ANALYTICS-003`**: Non-positive-semidefinite covariance matrix breaks CVXPY optimization

All 14 anti-patterns: [references/ANTI_PATTERNS.md](references/ANTI_PATTERNS.md)

## Evidence Quality Notice

> [QUALITY NOTICE] This crystal was compiled from blueprint finance-bp-093. Evidence verify ratio = 34.6% and audit fail total = 40. Generated results may have uncaptured requirement gaps. Verify critical decisions against source files (LATEST.yaml / LATEST.jsonl).

## Reference Files

| File | Contents | When to Load |
|---|---|---|
| [references/seed.yaml](references/seed.yaml) | V6+ 全量权威 (source-of-truth) | 有行为/决策争议时必读 |
| [references/ANTI_PATTERNS.md](references/ANTI_PATTERNS.md) | 14 条跨项目反模式 | 开始实现前 |
| [references/WISDOM.md](references/WISDOM.md) | 跨项目精华借鉴 | 架构决策时 |
| [references/CONSTRAINTS.md](references/CONSTRAINTS.md) | domain + fatal 约束 | 规则冲突时 |
| [references/USE_CASES.md](references/USE_CASES.md) | 全量 KUC-* 业务场景 | 需要完整示例时 |
| [references/LOCKS.md](references/LOCKS.md) | SL-* + preconditions + hints | 生成回测/交易代码前 |
| [references/COMPONENTS.md](references/COMPONENTS.md) | AST 组件地图（按 module 拆分）| 查 API 时 |

---

*Compiled by Doramagic crystal-compilation-v6.1 from `finance-bp-093` blueprint at 2026-04-22T13:00:40.212744+00:00.*
*See [human_summary.md](human_summary.md) for non-technical overview.*