A Canadian investment-industry research programme has produced a concrete answer to a common broker-design question: warnings that make losses tangible can change investor decisions, whereas a checkbox saying “I understand the risks” may not. CIRO, working with the Behavioural Insights Team, reports a randomized controlled trial involving nearly 3,000 Canadians. This is a retrospective examination of published research relevant to current digital brokerage design, not a newly announced October regulation.[1]
The trial tested support at points such as opening a higher-risk account. CIRO says examples translating a market move into a dollar loss, together with interactive quizzes requiring active engagement, reduced high-risk account openings by 16% and high-risk investing activity by approximately 10–11% in the trial. Those figures measure outcomes within the study’s intervention setting; they are not a forecast that every brokerage introducing identical prompts will get precisely the same result.[1]
A controlled comparison of warning formats
CIRO research: described behavioural findings
| Intervention | Study result |
|---|---|
| Concrete monetary loss scenarios and interactive quizzes | 16% reduction in higher-risk account openings |
| Same engagement-oriented supports | About 10–11% lower high-risk investing activity |
| Passive “I understand” checkbox | No measurable behavioural effect |
| Prompts at critical decision points | More effective than undirected repeated generic warnings |
This finding matters in the execution-only model. Order-execution-only brokers generally process client-selected securities orders without personalised recommendations or suitability assessments of each trade. That does not make comprehension of options, margin or crypto-asset risks irrelevant. The research suggests that educational design can change a customer’s moment of choice without a broker crossing into individual investment advice. The distinction is a compliance and product-design issue, not permission to recommend positions through a generic quiz.[1][2]
A careful reading avoids treating the 16% and 10–11% estimates as interchangeable. Opening an account is an enrolment decision; later high-risk activity can be measured using a separate endpoint, and the two may affect overlapping participants. The study also included interviews, prototypes and a market scan, but those exploratory elements are not randomized evidence of the same strength. The reported trial results should retain their sample and study limitations.[1]
Operational test for execution-only firms
A brokerage can test a loss-in-currency example next to the option, leverage or margin permission step, measure actual user decisions and compare that with its existing disclosure flow. Its own A/B testing should predefine outcomes and avoid using prompts that recommend a particular security or shame the customer. CIRO’s published evidence challenges mere acknowledgement forms; it does not convert a risk warning into a substitute for account controls or a full regulatory compliance programme.[1][2]
Sources & further reading
- New CIRO research offers practical insights to support DIY investors Canadian Investment Regulatory Organization · Accessed 31 Oct 2026
- Guidance on Order-Execution-Only Account Services and Activities Canadian Investment Regulatory Organization · 12 Mar 2026 · Accessed 31 Oct 2026