Investor Skills is an open-source library that organizes investing judgment—such as evaluating opportunities, managing risk, and acting under uncertainty—into structured, reusable instructions for people and AI finance agents. It is designed for studying and applying investment approaches, including inside Questflow and other agent tools. The catalogue includes portable skill packages from the library.
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.
npx skills add questflowai/investorskills --skill ackman-concentrated-activismgit clone --depth 1 https://github.com/questflowai/investorskillsWrote 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.
[](https://agentmods.dev/skills/questflowai/investorskills/ackman-concentrated-activism)<a href="https://agentmods.dev/skills/questflowai/investorskills/ackman-concentrated-activism"><img src="https://agentmods.dev/badge/skills/questflowai/investorskills/ackman-concentrated-activism/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/skills/questflowai/investorskills/ackman-concentrated-activism"><img src="https://agentmods.dev/badge/skills/questflowai/investorskills/ackman-concentrated-activism.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector pass
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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00039 | $0.00428 |
| Opus 5 | $0.00019 | $0.00214 |
| Sonnet 5 | $0.00008 | $0.00086 |
| Haiku 4.5 | $0.00004 | $0.00043 |
Grade A, and why
ackman-concentrated-activism 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 11d 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.
What it actually says
Ackman Concentrated Activism
Use this skill to apply Bill Ackman-style judgment.
When To Use
Use this skill when the user asks for:
- concentrated long thesis
- activism campaign
- quality compounder with catalyst
- Pershing Square style review
Trigger phrases include Ackman, Pershing Square, concentrated long, activism, multiyear thesis.
Do Not Use When
- The setup is outside this model's universe and another investor skill fits better.
- Critical data is missing and the model requires it.
- The user wants guaranteed returns or unbounded leverage.
- The request is only generic market chatter with no decision.
Inputs Needed
- Asset, portfolio, theme, or market context
- Relevant financial, market, regime, or structural data
- Time horizon and risk constraints
- Current price/valuation or portfolio weights if sizing is requested
Process
- Underwrite long-term business quality.
- Estimate intrinsic value and value gap.
- Define catalyst: activism, ops, capital allocation, re-rating.
- Size only when research depth supports concentration.
Output Format
# Ackman Concentrated Activism View: [Subject]
## Verdict
Concentrated Long / Activist Long / Watch / Needs Catalyst / Pass
## Setup / Thesis
## Evidence
## Risks
## Action Plan
## Invalidation
## Missing Data
Guardrails
- Do not force a trade when filters fail.
- Do not ignore risk, liquidity, or regime constraints.
- Do not mix this model with another unless comparison is requested.
- Separate facts, assumptions, and judgment.
Questflow Use
In Questflow, this skill is best used as a judgment module for Funds, research workflows, monitoring, and risk-aware decision support.
What ships with it
1 file beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
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.
- 11d ago First seen · 74 lines · 39 tokens per session scan A d8f1e7c94b21
ackman-concentrated-activism is a skill published in the GitHub repository questflowai/investorskills (1,849 stars, last pushed 19d ago), licensed MIT. It adds 39 tokens to every session and 428 once invoked, about $0.0002 per session on Opus 5. 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 2026-08-30.
Other skills, from other repositories
lienfi
Research and buy tokenized US tax lien certificates on LienFi (Base, USDC) — screen the live book by NET yield with no credential, then, once your operator has authorized your wallet in a browser, register and run the prepare → sign → confirm → submit → report purchase loop from the wallet you control. LienFi signs…
t-invest
A command-line connection to a user’s T-Invest brokerage account, providing portfolio data, market information, calculations, and explicitly requested trades.
serenity-chokepoint-investing
Analyze public equities and sectors using the Serenity-style AI supply-chain chokepoint investing framework. Best for AI infrastructure, semiconductors, optical communications, data center power, storage, cooling, robotics, and industrial supply-chain bottleneck research.
thai-personal-finance-planner
Personal financial planner for Thailand-based users. Use this skill when the user asks for help with budgeting, tax planning involving Thai-specific products (SSF, RMF, Thai ESG, Thai ESGX, Easy E-Receipt), debt strategy at Thai bank rates, retirement planning involving ประกันสังคม (มาตรา 33/39/40), กบข., PVD…
stock-liquidity
Analyze stock liquidity using bid-ask spreads, volume profiles, order book depth, market impact estimates, and turnover ratios via Yahoo Finance data. Use this skill whenever the user asks about liquidity, trading costs, bid-ask spread, market depth, volume analysis, slippage, market impact, turnover ratio, or how…
company-valuation
Estimate the intrinsic value of a public company using DCF, relative (peer multiple) and sum-of-parts (SOTP) methods, then triangulate to an implied share price with upside/downside versus the current market price. Use this skill whenever the user asks: "what is AAPL worth", "valuation of NVDA", "fair value of TSLA"…