David Weild IV is an American investment banker and financial commentator best known for holding the position as Vice Chairman of NASDAQ.

[15] Weild became known nationally for his advocacy of changing the US laws applied to IPOs when he was interviewed for a 1994 cover story on the issue by Businessweek.

In August 2010 he wrote about the equity market structure's systemic unfairness to small investors in an article for the Financial Times.

[16] In October 2011 he called also for a new stock market to support small companies in an op-ed run in The Wall Street Journal.

In November 2009 The Economist wrote about stock market structure as a possible cause for the decline in the number of publicly listed companies, citing work published at Grant Thornton LLP by Weild.

He testified that inadequate tick sizes were damaging the ability of Wall Street to properly execute and support IPOs.

As a result, small cap companies were being deprived of access to capital which in turn was undermining growth in the American economy.

[13] He also testified several times before the SEC Advisory Committee on Small and Emerging Companies and US Congress in the effort of passing the April 5, 2012 Jumpstart Our Business Startups Act through the US government, including hearings in November 2009 and June 2010.

[30] Weild has stated that larger economic incentives to support small-capitalization stocks could buoy prices and liquidity leading to more IPOs and, thus, an acceleration in job creation.