Thomas Croghan has been Managing Member of Rail-Splitter Capital Management since September 2025, is a control person of the firm and directly owns 75% or more of it.
Rail-Splitter Capital Management LLC is a Winnetka, IL firm with $484M under management, 34 clients and 3 advisers in one office, as of its June 2026 filing.
Thomas Croghan’s longest registration was 14 years at Wintrust Investments (2011–2025). Before joining Rail-Splitter Capital Management in 2026, Thomas Croghan was registered through LPL Financial LLC and Wintrust Investments.
- – present · under a yearWinnetka, IL · Adviser representative · Firm CRD 338394
- LPL Financial LLC– · 1 yearWinnetka, IL · Adviser representative · Firm CRD 6413
- Wintrust Investments– · 14 yearsWinnetka, IL · Adviser representative · Firm CRD 875
- Great Lakes Advisors, LLC– · 7 yearsWinnetka, IL · Adviser representative · Firm CRD 110757
- Morgan Stanley Smith Barney LLC– · 1 yearLake Forest, IL · Adviser representative · Firm CRD 149777
- Morgan Stanley & Co. Incorporated– · 2 yearsWinnetka, IL · Adviser representative · Firm CRD 8209
- Morgan Stanley– · 1 yearWinnetka, IL · Adviser representative · Firm CRD 7556
- William Blair & Company L.L.C.– · under a yearChicago, IL · Adviser representative · Firm CRD 1252
Investment adviser representative registrations
Thomas Croghan is registered as an investment adviser representative in Illinois, since March 2026.
- IllinoisSince 23 March 2026
Examinations
| Exam | Name | Passed |
|---|---|---|
| SIE | Securities Industry Essentials Examination | Credited |
| Series 65 | Uniform Investment Adviser Law Examination | 30 September 2005 |
| Series 24 | General Securities Principal Examination | 20 January 1997 |
| Series 63 | Uniform Securities Agent State Law Examination | 4 January 1984 |
| Series 7 | General Securities Representative Examination | 19 November 1983 |
- Name
- Securities Industry Essentials Examination
- Name
- Uniform Investment Adviser Law Examination
- Name
- General Securities Principal Examination
- Name
- Uniform Securities Agent State Law Examination
- Name
- General Securities Representative Examination
- Full name
- Thomas J Croghan
- CRD
- 1209190
- Firm
- Rail-Splitter Capital Management · CRD 338394
- Role
- Managing Member
- Office
- 588 LINCOLN AVENUE, SUITE 200, Winnetka, IL 60093
- Registration
- Investment adviser registration
- In the industry since
- November 1983
- Disciplinary history
- Not yet shown here · SEC record
Where does Thomas Croghan work?
Thomas Croghan has been Managing Member of Rail-Splitter Capital Management LLC since September 2025, and is a control person of the firm.
Is Thomas Croghan a financial advisor?
Yes. Thomas Croghan has a current investment-adviser registration in Illinois, through Rail-Splitter Capital Management since March 2026.
How many years of experience does Thomas Croghan have?
Thomas Croghan has 42 years in the financial industry, since November 1983, across 8 adviser firms.
What exams has Thomas Croghan passed?
Thomas Croghan has passed 4 licensing exams: the Series 7, Series 63, Series 24 and Series 65. The earliest, the Series 7, was passed in November 1983. FINRA credited Thomas Croghan with the SIE, which began in October 2018.
Where did Thomas Croghan work before Rail-Splitter Capital Management?
Before Rail-Splitter Capital Management, Thomas Croghan was registered through Wintrust Investments, January 2011 to January 2025; Great Lakes Advisors, LLC, January 2011 to April 2018; Morgan Stanley Smith Barney LLC, June 2009 to January 2011; Morgan Stanley & Co. Incorporated, April 2007 to June 2009; Morgan Stanley, December 2005 to April 2007; William Blair & Company L.L.C., October 2005 to December 2005.
Where is Thomas Croghan based?
Thomas Croghan’s registered office is in Winnetka, IL.
Is Thomas Croghan registered with FINRA?
No. Thomas Croghan has no current broker registration.
How can I verify Thomas Croghan’s record?
Search CRD 1209190 on the SEC’s adviser search (adviserinfo.sec.gov), which publishes Thomas Croghan’s full registration record.