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Harley Bassman – Escalating Clash With ETF Issuer
Bond market veteran Harley Bassman, inventor of the Treasury volatility gauge, has escalated a dispute with his former employer, a $14 billion ETF issuer, by sending shareholders a letter challenging the firm's business practices.
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## Overview
Harley Bassman, the derivatives expert credited with inventing the main gauge of Treasury market volatility (the 'MOVE Index'), has escalated a messy breakup with his former employer, a $14 billion ETF issuer (Bloomberg, September 14, 2026).
## Latest Development
Bassman sent a letter to the firm's shareholders challenging its business practices, marking an escalation in what is described as a contentious departure (Bloomberg, September 14, 2026).
## Why It Matters
Bassman is a well-known figure in fixed income and derivatives markets, and this dispute could surface governance or business practice concerns at a significant ETF issuer, potentially affecting investor confidence and prompting regulatory or media scrutiny. Worth tracking for developments in the letter's substance, the ETF issuer's response, and any resulting litigation or reputational fallout.