
The Rational Reminder Podcast Adriana Robertson: "Passive" Investing, and What Matters to Investors (EP.133)
Jan 21, 2021
Adriana Robertson, the Honourable Justice Frank Iacobucci Chair in Capital Markets Regulation and an Associate Professor at the University of Toronto, challenges the notion of index investing as truly passive. She reveals how index construction involves significant decision-making and the misleading nature of benchmarks like the S&P 500. Adriana discusses the proliferation of indices and how they often reflect active management strategies. Dive into intriguing insights on investor behavior, including why many still opt for active funds, and the role of cash in equity allocation.
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Indexing Is Not Truly Passive
- The label "passive" is misleading because indices are created by people making discretionary decisions.
- Adriana Robertson argues index investing always involves decision-making at the index-creator level.
Committee Discretion Alters S&P 500
- Discretion materially affects S&P 500 composition and performance; Robertson estimates at least a 5% role.
- The committee's choices, not just objective rules, shape index outcomes and investor exposure.
Tesla's S&P 500 Inclusion Example
- Robertson discusses Tesla's path to S&P 500 inclusion as an example of rule eligibility plus committee discretion.
- Despite long speculation, Tesla's addition still surprised markets and moved the stock ~9–10% in after-hours trading.
