---
title: "Additions and Deletions"
url: https://investbymodel.com/glossary/additions-and-deletions/
description: "Changes to a portfolio, priced on the session following the notice of change. Quoted from /Legal/Pricing/ (Invest By Model, 2008-2011)."
published: 2026-08-10
updated: 2026-08-10
---

# Additions and Deletions

Published 2026-08-10

Performance and Pricing

Additions and deletions to a portfolio are priced according to the average price for the trading session following a notice of change in the portfolio.

## Where this appeared

- [/Legal/Pricing/](https://investbymodel.com/Legal/Pricing/) — security pricing page, 2011
- [Letter A of the A–Z index](https://investbymodel.com/glossary/#letter-a)
- [All 27 terms](https://investbymodel.com/glossary/)

Quoted from [/Legal/Pricing/](https://investbymodel.com/Legal/Pricing/) as published between 2008 and 2011. [Return to the front page](https://investbymodel.com/)