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Welcome to the PnL Explained Professionals Home Page!

Main Page by Topic

A. PnL Explained

B. CTRM Software

C. Statistics


New for September 2020

1) *NEW* Content and original materials from my NYU Intro to Statistics class


2) *NEW* layout, enhanced to organize content into three areas:

A) PnL Explained. Covering MTM, PnL, greeks, Risk, Stress Tests, VaR. This is the original content that you know and love from this site.

B) CTRM = Commodities Trading & Risk Management

C) Statistics Useful content on Probability and Statistics


3) New logo


Our Mission

a) Educate the world about PnL explained reporting (a.k.a. PnL Explain/PnL Attribution/P&L Explained/P&L Attribution/Profit and Loss Explained)

b) Provide a forum for PnL Explained Professionals to share information and help them meet their professional goals.

c) Provide credentials to professionals to help demonstrate that they have reached a minimum level of proficiency in PnL explained reporting.


Our Motto

Res Non Ipsa Loquitur


PnL Explained

Profit and/or Loss (PnL) Explained also called P&L Attribution is a type of report commonly used by traders, especially derivatives (swaps and options) traders, that attributes or explains the daily fluctuation in the value of a portfolio of trades to the root causes of the changes. PnL is usually defined as value today minus value from prior day. PnL Explained is defined at a high level as


or in more detail:

For more, see PnL Explained FAQ and PnL Explained Glossary


And also see MTM Explained and Greeks Explained



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This website last updated September 2020