DFX Intelligence

RIA Intelligence

Registered investment advisers, the advisors registered through them, the capital they report, the private vehicles they run and the people who own them, as a graph with a filing date behind every number. RAUM is what the adviser filed, a move is two registration dates, and a class is a rule you can read.

Registered advisor

Thomas J Croghan

Rail-Splitter Capital Management LLCindependent RIAWinnetka, IlIA-onlyIAPD 1209190

Feed of 09/14/2026

Also filed as Thomas J Croghan

At current firm

0 y

since Mar 23, 2026

In the industry

42 y

since Jan 4, 1984 (earliest exam, job or registration)

Prior registered firms

IAPD previous registrations

State registrations

current, as an IAR

Firms today

current registrations

Exams

S63, S65

IA exams only

Book size

not public

not estimated here

Signals

dated events on this person

Registration history

IAPD current and previous registrations

Rail-Splitter Capital Management LLC independent RIA current
since Mar 23, 2026 · Winnetka, Il
LPL Financial LLC BD affiliated
Jan 23, 2025 to Mar 24, 2026 · Winnetka, Il
Wintrust Investments former
Jan 6, 2011 to Jan 23, 2025 · Winnetka, Il
Great Lakes Advisors, LLC other
Jan 6, 2011 to Apr 10, 2018 · Chicago, Il
Morgan Stanley wirehouse
Jun 1, 2009 to Jan 19, 2011 · Winnetka, Il
Morgan Stanley & Co. LLC unclassified
Apr 2, 2007 to Jun 1, 2009 · Winnetka, Il
Morgan Stanley Dw Inc. unclassified
Dec 9, 2005 to Apr 2, 2007 · Winnetka, Il
William Blair & Company L.L.C. BD affiliated
Oct 4, 2005 to Dec 14, 2005 · Chicago, Il

Moves

a registration end followed by a registration begin elsewhere

LPL Financial LLC to Rail-Splitter Capital Management LLC
left Mar 24, 2026, registered Mar 23, 2026 (-1 days) · Affiliated broker-dealer or bank to a newly registered adviser · moved with a team
Wintrust Investments to LPL Financial LLC
left Jan 23, 2025, registered Jan 23, 2025 (0 days) · corporate re-registration, not a move
Great Lakes Advisors, LLC to Wintrust Investments
left Apr 10, 2018, registered Jan 6, 2011 (-2651 days) · channel change inside one enterprise, not a move · moved with a team
Morgan Stanley to Great Lakes Advisors, LLC
left Jan 19, 2011, registered Jan 6, 2011 (-13 days) · Other
Morgan Stanley & Co. LLC to Morgan Stanley
left Jun 1, 2009, registered Jun 1, 2009 (0 days) · corporate re-registration, not a move
Morgan Stanley Dw Inc. to Morgan Stanley & Co. LLC
left Apr 2, 2007, registered Apr 2, 2007 (0 days) · corporate re-registration, not a move
William Blair & Company L.L.C. to Morgan Stanley Dw Inc.
left Dec 14, 2005, registered Dec 9, 2005 (-5 days) · Other

Signals

Thomas J Croghan left Lpl Financial Llc for Rail-Splitter Capital Management Llc (registered 2026-03-23)
Mar 24, 2026 · Advisor changed firm · fact

Transition signals

Mobility scoring is not published yet. The observable conditions this page will draw on once the historical validation is done: tenure, the firm’s own departures and ownership changes, new state registrations, a new adviser entity with this person on Schedule A, and colleagues’ moves. Until precision and lead time are measured on known moves, no label is printed. Read the methodology.

Provenance

Source: IAPD individual compilation feedreportedadviserinfo.sec.gov
Firm class: Independent wealth managerderived
Years in industry: 42derivedfrom the earliest dated exam, employment or registration
Not published: disclosure flags, outside business text, branch street address