A 1990s roll-up IPO combined several private companies in one industry into a new public company at the moment of its offering. A study of 47 such firms from 1994 to 1998, reported by the University of Michigan, found average accounting performance not worse than industry benchmarks but earnings well short of expectations, with better results where founders stayed involved. As of October 2026, the SEC filings show three outcomes: U.S. Office Products filed Chapter 11 on March 5, 2001, Metals USA on November 14, 2001, and Integrated Electrical Services on February 14, 2006. IES emerged on May 12, 2006, and IES Holdings later reported $3.37 billion of revenue for fiscal 2025.
The University of Michigan release on the study discussed below defines a roll-up IPO as a shell company that goes public while merging with firms in the same industry. A 1998 Mergers & Acquisitions article of December 2, 1998 (only the summary was visible) described the same technique as relying on valuation differences between public and private markets.
It matters because it is the large-scale ancestor of the public holding company idea: use a public company to gather small private businesses. The record is useful for what it says about pace, founder involvement and debt, and it is also a record of failures. Three well-documented companies are covered below: U.S. Office Products, Metals USA and Integrated Electrical Services (IES).
U.S. Office Products. The U.S. Office Products fiscal 1997 Form 10-K says it was founded in October 1994, made its initial public offering in February 1995, when it acquired its first six office supply companies, and that its stock had traded on the Nasdaq National Market since February 15, 1995. The U.S. Office Products fiscal 1998 Form 10-K reports:
The Form 8-K of March 12, 2001 reports that the company and all of its U.S. subsidiaries other than its Mail Boxes Etc. units filed Chapter 11 on March 5, 2001 in Delaware, with an agreed $250 million cash sale of its office supply and furniture business to Corporate Express.
Metals USA. The Metals USA 2001 Form 10-K says it began with a July 1997 IPO and the simultaneous acquisition of eight companies with about $450 million of combined historical revenue. Net sales were $1,745.4 million in 1999, $2,021.6 million in 2000 and $1,562.0 million in 2001. Net income was $39.8 million, $11.7 million and a loss of $409.1 million. The 2001 charges included $386.2 million of asset impairments, of which $288.7 million was goodwill. The company filed Chapter 11 on November 14, 2001 in Houston, and the NYSE suspended trading that day.
Integrated Electrical Services. The IES fiscal 1998 Form 10-K reports 16 founding companies bought with the January 30, 1998 IPO, $91.5 million of net proceeds and 21 more acquisitions by September 30, 1998. The IES fiscal 1999 Form 10-K reports fiscal 1999 revenue of $1,035.9 million, goodwill equal to 54% of total assets and 100% of stockholders' equity at September 30, 1999, and total debt of $228.4 million. The NYSE suspended trading in IES stock on December 15, 2005, and the IES disclosure statement of February 14, 2006 shows a Chapter 11 filing on February 14, 2006 under a prepackaged plan to convert about $173 million of subordinated notes to equity. The IES release of April 26, 2006 reports that the court had entered an order confirming the plan, and the IES fiscal 2006 Form 10-K reports emergence from Chapter 11 on May 12, 2006.
The studies disagree, and both are worth reading in their own words. The University of Michigan Ross School of Business release of September 16, 2004 on a study in the Review of Financial Studies covered 47 service, construction and durable-goods wholesale firms that completed roll-up IPOs from 1994 to 1998, and reported:
The abstract of the 2005 Review of Financial Studies paper, as listed by RePEc IDEAS says these firms delivered poor stock returns. The Johnston and Madura, Studies in Economics and Finance, 2002 (Emerald abstract) found higher initial returns than traditional IPOs and long-run results that were not as poor as other IPOs. Different samples and measures can explain the gap.
For the three companies, the filings state outcomes but I found no passage in them that assigns one cause, so this page does not assign one. What the filings show is pace, goodwill and debt: IES had goodwill equal to all of its book equity by September 1999, and Metals USA wrote off $288.7 million of goodwill in 2001. IES emerged from Chapter 11 on May 12, 2006 and, per its IES Holdings release of November 21, 2025, reported fiscal 2025 revenue of $3.37 billion and net income attributable to IES of $306.0 million. It trades on Nasdaq as IESC.
Three points transfer. First, the founder finding fits seller rollover: see rollover equity. Second, goodwill that equals book equity leaves no cushion, a point for any buyer that pays above book. Third, sponsor pay is a design choice that shareholders can see.
Much does not transfer. These deals bought founding companies at the IPO and then bought dozens more with stock and debt, at a scale far above a holding company with two or three businesses. Accounting rules and market conditions have changed since the 1990s, and the USO figures include pooling-of-interests accounting, so they are not directly comparable with a current buyer's statements. My view is that the lasting lesson is founder alignment and restraint on pace, which a small buyer can copy without the 1990s structure.
Using the 10-K's five-year table: revenue rose from $523.8 million to $2,611.7 million, about 5.0 times ($2,611,740 / $523,755 = 4.99). Net income rose from $21.6 million to $67.2 million, about 3.1 times. Net margin therefore moved from about 4.1% (21,641 / 523,755) to about 2.6% (67,188 / 2,611,740). The filing does not split acquired from organic growth in the portion I read, so the 5.0 times is not organic growth.
U.S. Office Products figures are from the U.S. Office Products fiscal 1998 Form 10-K and the Form 8-K of March 12, 2001, and the founding and IPO dates are from the U.S. Office Products fiscal 1997 Form 10-K. Metals USA figures are from the Metals USA 2001 Form 10-K. IES figures are from the IES fiscal 1998 Form 10-K, the IES fiscal 1999 Form 10-K, the IES disclosure statement of February 14, 2006, the IES release of April 26, 2006, the IES fiscal 2006 Form 10-K and the IES Holdings release of November 21, 2025. The study findings are from the University of Michigan Ross School of Business release of September 16, 2004, the abstract of the 2005 Review of Financial Studies paper, as listed by RePEc IDEAS and the Johnston and Madura, Studies in Economics and Finance, 2002 (Emerald abstract). The ratios in the worked example are this site's arithmetic. The Michigan release and the RePEc page list different author sets for the paper, so authors are not named here.
No. A roll-up IPO buys its founding companies at the offering. A serial acquirer buys over years. See what a serial acquirer is.
All three companies here filed for Chapter 11. IES emerged in May 2006 and later reported $3.37 billion of fiscal 2025 revenue. The Michigan study found average accounting performance in its 47-firm sample was not worse than industry benchmarks.
Rarely. Small companies more often use other routes, covered in ways a holding company can go public.
For how the public and private roll-up math compares, read public roll-up vs private roll-up.
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