---
title: "What Is a Ticker Symbol? Decode IBRX, VLTO, AVGO and More"
description: "Ticker symbols are the short codes stocks trade under, but IBRX, VLTO or FSCO tell you little on their own. How tickers are assigned, why they change after spin-offs and mergers, and how to look up an unfamiliar symbol."
canonical: https://insideralpha.ai/learn/what-is-a-ticker-symbol
date_published: 2026-07-27
date_updated: 2026-09-23
publisher: InsiderAlpha (https://insideralpha.ai)
---

Canonical URL: https://insideralpha.ai/learn/what-is-a-ticker-symbol
Published 2026-07-27. Updated 2026-09-23.

# What is a ticker symbol?

A **ticker symbol** is the short code a security trades under on an exchange - one to five letters in the U.S. (UPS, KO, AVGO, CRWD). The name comes from 19th-century ticker-tape machines, which printed abbreviated company codes to save bandwidth. The codes outlived the machines.

## How tickers are assigned

- **The company picks, the exchange approves.** Memorable symbols are marketing (LUV for Southwest, HOG for Harley-Davidson); others are just initials.
- **NYSE symbols were traditionally 1-3 letters, Nasdaq 4-5** - the distinction has blurred, so length no longer tells you the exchange.
- **Suffixes mean share classes or security types.** BRK.A vs BRK.B are different share classes of the same company; a fifth letter on Nasdaq can flag warrants, rights, or ADRs.
- **Tickers get recycled and renamed.** After mergers, rebrands, and spin-offs a familiar symbol can vanish or point at a new business entirely, which is where most of the confusion comes from.

## Decoding the tickers people search for

- **IBRX** - [ImmunityBio](https://insideralpha.ai/company/IBRX), a clinical-stage immunotherapy company.
- **VLTO** - [Veralto](https://insideralpha.ai/company/VLTO), the water-quality and product-identification business spun off from Danaher in 2023. A spin-off like this creates an unfamiliar ticker overnight.
- **AVGO** - [Broadcom](https://insideralpha.ai/company/AVGO). The symbol survives from Avago Technologies, which acquired Broadcom in 2016 and kept the better-known name but its own ticker.
- **OKLO** - [Oklo](https://insideralpha.ai/company/OKLO), an advanced nuclear-fission company that listed in 2024.
- **RKT** - [Rocket Companies](https://insideralpha.ai/company/RKT), the parent of Rocket Mortgage.
- **INFA** - [Informatica](https://insideralpha.ai/company/INFA), the data-management software firm that agreed in 2025 to be acquired by Salesforce.
- **SRFM** - [Surf Air Mobility](https://insideralpha.ai/company/SRFM), a regional air mobility operator.
- **ADPT** - [Adaptive Biotechnologies](https://insideralpha.ai/company/ADPT), immune-driven medicine.
- **TSSI** - [TSS](https://insideralpha.ai/company/TSSI), a data-center integration services provider.
- **QSI** - [Quantum-Si](https://insideralpha.ai/company/QSI), protein-sequencing instruments.
- **FSCO** - [FS Credit Opportunities Corp](https://insideralpha.ai/company/FSCO), a closed-end credit fund. Closed-end funds trade on an exchange the same way stocks do.
- **BBDC** - [Barings BDC](https://insideralpha.ai/company/BBDC), the business development company managed by Barings.
- **RUM** - [Rumble](https://insideralpha.ai/company/RUM), the video platform and cloud business.
- **SLB** - [SLB](https://insideralpha.ai/company/SLB), formerly Schlumberger, which made its longtime ticker its official corporate name in 2022.

## How to look up any ticker

Type the symbol or the company name into [InsiderAlpha's company search](https://insideralpha.ai/companies). Each company page shows what the company does, its sector, its recent SEC filings, and what its own [insiders](https://insideralpha.ai/learn/sec-form-4) have been doing with the stock. If a ticker you have never heard of comes with a run of executive buying, read its filings next.

*This article is informational and is not investment advice.*