event-study

event-study is a skill for Claude Code, Codex from rgourley/quant-garage. It costs 0 tokens per session (2,462 once invoked), scanned A, original, no licence file.

A tool that measures how stocks performed around a corporate event compared with their usual reaction pattern. It can analyze one stock and event, many stocks facing one event type, or many stocks and events together.

In plain words
What is it for?
Use it to write a single-stock event note, build a cross-company comparison, or analyze a larger collection of events.
Why use it?
It helps separate an event-related price move from the stock's normal fluctuations and compare reactions across companies.

Skill for Claude CodeCodex

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

agentmods
npx agentmods add skills/rgourley/quant-garage/event-study
Any agent
npx skills add rgourley/quant-garage --skill event-study
Clone the repo
git clone --depth 1 https://github.com/rgourley/quant-garage

Made for: Claude Code, Codex.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for event-study

README.md
[![agentmods](https://agentmods.dev/badge/skills/rgourley/quant-garage/event-study.svg)](https://agentmods.dev/skills/rgourley/quant-garage/event-study)
Your own site
<a href="https://agentmods.dev/skills/rgourley/quant-garage/event-study"><img src="https://agentmods.dev/badge/skills/rgourley/quant-garage/event-study.svg" alt="Measured on agentmods" height="20"></a>
Per session 0 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,462 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin unknown No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5 $0.00000 $0.02462
Opus 5 $0.00000 $0.01231
Sonnet 5 $0.00000 $0.00492
Haiku 4.5 $0.00000 $0.00246

Measured 4d ago against content hash afb440c2736f, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

event-study scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 4d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

skills/event-study/SKILL.md · 210 lines

The source is not reproduced here

No licence file

A repository with no LICENSE is all rights reserved by default, so the body is not copied here. The metadata, the measurements and the link are.

Read it on GitHub

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 4d ago First seen · 210 lines · 0 tokens per session scan A afb440c2736f

Subscribe to this mod's changes

event-study is a skill published in the GitHub repository rgourley/quant-garage (7 stars, last pushed 1mo ago), with no licence file. It costs nothing until one of its globs matches a file; then it loads 2,462 tokens. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

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