Investors should understand ARS, how
auctions work, and the potential
impact of a decision to either actively bid or passively hold ARS, as well as the potential
impact of the actions other
auction participants may have on investment
results.
A swath of domestic equity ETFs were
impacted by the fragmentation of liquidity across trading venues and by the application of overly tight price collars during the reopening process.3 In the wake of these trading challenges, industry groups and regulators worked to refine LULD rules and implemented a series of LULD rule amendments in 2017 aimed at improving opening
auction and post-halt reopening
auction processes.4 In addition, the exchanges also adapted their opening mechanism,
resulting in a reduction in the number of ETFs and other securities halted on volatile days.