# `spy_data_daily.xlsx`

Daily SPY prices/total returns with 13-week T-bill yield (^IRX) from Yahoo Finance.

| | |
|---|---|
| **Source** | **Yahoo** — Yahoo Finance |
| **Years** | 1994-2026 |
| **Frequency** | D |
| **Vintage** | Rolling — refreshed by re-running the builder |
| **Rebuild** | `build_data/Build SPY Data - Yahoo.ipynb` |

## Used in this book

- [Tail Risk and Short-Term Capital Management](../discussions/Tail%20Risk%20and%20Short-Term%20Capital%20Management.ipynb) — Managed Funds (Discussion)

## Files in this book

- `spy_data_daily.xlsx`