Investor · New York, NY

James E. Buck

Open James in the network graph →

Filings

31

SEC Form D

Connections

62

co-filers

Capital

$5.3B

across filings

Active

Mar 2011

to Feb 2026

Most-connected co-filers (62)

E/S Mbs Gp Ii Llc · Old Greenwich, CT16 shared Benjamin Dell · New York, NY16 shared E/S Mbs Gp Ii Llc · Old Greenwich, CT15 shared Janet L. Schinderman · New York, NY15 shared Luis J. Rubio · Grand Cayman, Cayman Islands15 shared Bryan E. Mckigney · New York, NY13 shared Lawrence K. Becker · New York, NY12 shared E/S Mbs Gp Ii Llc · Old Greenwich, CT12 shared Michael W. Vranos · Old Greenwich, CT12 shared Laurence W. Penn · Old Greenwich, CT12 shared Lauren L. Paino · New York, NY9 shared Jesse L. Ausubel · New York, NY8 shared Brad K. Feld · Boulder, CO7 shared Lisa Reeves · Denver, CO7 shared Mark Nass · Denver, CO7 shared Richard W. Levandov · La Jolla, CA7 shared Richard W. Brounstein · Old Greenwich, CT6 shared Dominic Fera · Denver, CO6 shared Eric D. Roiter · Chestnut Hill, MA6 shared Fred Cohen · Menlo Park, CA5 shared Stephen L. Beach · New York, NY5 shared Deborah L. Kaback · New York, NY5 shared David Singer · South San Francisco, CA5 shared Naveen G. Bhatia · Scottsdale, AZ5 shared

Recent filings (31)

Ellington Strategic Mortgage Fund, L.P.Feb 2026 · 2 co-filers Ellington Strategic Mortgage Fund, L.P.Feb 2025 · 6 co-filers Ellington Strategic Mortgage Fund, L.P.Feb 2024 · 6 co-filers Ellington Strategic Mortgage Fund, L.P.Feb 2023 · 6 co-filers Ellington Strategic Mortgage Fund, L.P.Feb 2022 · 6 co-filers Ellington Strategic Mortgage Fund, L.P.Feb 2021 · 9 co-filers Ellington Strategic Mortgage Fund, L.P.Feb 2020 · 9 co-filers Ellington Strategic Mortgage Fund, L.P.Feb 2019 · 11 co-filers Ellington Strategic Mortgage Fund, L.P.Feb 2018 · 11 co-filers Ellington Strategic Mortgage Fund, L.P.Feb 2017 · 11 co-filers Ellington Strategic Mortgage Fund, L.P.Feb 2016 · 10 co-filers Advantage Advisers Xanthus Fund, L.L.C.Feb 2016 · 12 co-filers Ellington Strategic Mortgage Fund, L.P.Feb 2015 · 10 co-filers Advantage Advisers Xanthus Fund, L.L.C.Feb 2015 · 14 co-filers Ellington Strategic Mortgage Fund, L.P.Feb 2014 · 10 co-filers Advantage Advisers Xanthus Fund, L.L.C.Feb 2014 · 13 co-filers Ellington Strategic Mortgage Fund, L.P.Mar 2013 · 5 co-filers Ellington Strategic Mortgage Fund, L.P.Mar 2012 · 5 co-filers Advantage Advisers Xanthus Fund, L.L.C.Feb 2012 · 13 co-filers Advantage Advisers Whistler Fund, L.L.C.Feb 2012 · 13 co-filers NODALITY, INC.Aug 2011 · 19 co-filers$10.0M Ellington Strategic Mortgage Fund, L.P.Mar 2011 · 5 co-filers NODALITY, INC.Feb 2011 · 17 co-filers$10.0M Advantage Advisers Xanthus Fund, L.L.C.Feb 2011 · 13 co-filers Advantage Advisers Whistler Fund, L.L.C.Feb 2011 · 13 co-filers

Derived from public SEC Form D (Reg D) filings; entities resolved probabilistically. See James in the interactive graph →