How Discount Brokerages Make Money (kalzumeus.com)

Article summary

The article discusses how discount brokerages make money, focusing on net interest, commissions, asset management, and securities lending. It explains that net interest is a significant source of revenue for discount brokerages, and that they often make more money from holding customer cash balances than from commissions. The article also touches on the topic of payment for order flow and how it is not as significant a concern as some people make it out to be. The author argues that the real cost to customers is the interest spread between cash balances in brokerage accounts and high-interest bank accounts or money market funds.

Main themes

• discount brokerages
• net interest
• commissions
• asset management
• securities lending
• payment for order flow
• financial industry

What commenters say

• Some people believe that retail brokers were able to earn money by providing value to their customers, while others argue that they did not provide enough value to justify their high fees.
• The market for retail brokers has changed significantly over time, with the invention of index funds and discount brokerages leading to a decline in their market share.
• There is a debate about whether smoking causes cancer, with some arguing that correlation does not necessarily imply causation, while others point to a large body of evidence supporting a causal link.
• The use of randomized controlled trials is not always necessary to establish causality, and other forms of evidence, such as epidemiological studies, can be sufficient to support causal claims.
• Some commenters argue that Interactive Brokers is transparent about its fees and practices, while others have had negative experiences with the company.
• There is a discussion about the challenges faced by US expats in finding suitable brokerage services, with some companies being more accommodating than others.
• The topic of PFICs and their potential impact on US taxpayers living abroad is raised, with some commenters warning about the potential risks and complexities involved.