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.

Former SEC-registered adviser

O'Brien Wealth Partners LLC

Former SEC-registered adviserWaltham, MassachusettsCRD 105336SEC 801-31201websiteIAPD
Latest filing Jul 17, 2025
First filing on the tape Mar 28, 2012 · 42 filings
SEC status approved since Dec 31, 1987
RAUM
$1.1B
reported, Item 5.F
Discretionary
100%
of RAUM
Private clients
97%
$1.1B individuals and HNW
Advisors
0
registered through the firm on IAPD
RAUM per advisor
n/a
derived; firm RAUM over IAPD count
Employees
14
11 advisory (5.B.1)
Offices
0
beyond the principal office
Private funds
0
reported on Schedule D
History
42 filings and snapshots on the tape
RAUM$1.1B as of Jul 17, 2025
Mar 28, 2012$331M then
HNW client RAUM$979M as of Jul 17, 2025
Mar 29, 2018$445M then
State-registered IARs (5.B.3)11 as of Jul 17, 2025
Mar 28, 20120 then
Employees (5.A)14 as of Jul 17, 2025
Mar 12, 201311 then
Private funds: no history
RAUM +15% over the last fiscal year+5.4% a year over threeIARs 12 to 11
Practice profile
derived from the filing of Jul 17, 2025; every figure names its basis
RAUM per advisor
$101MderivedRAUM over IAPD advisors; not a book size
Clients per advisor
46derivedindividual and HNW clients (5.D) over advisors
Average HNW client
$3.5MderivedHNW RAUM over HNW clients
Average account
$554,954derivedRAUM over accounts (5.F.2.f)
Discretionary
100%derivedof RAUM
Institutional
2.9%derivedpensions, charities, corporations, government, insurance, banks, other advisers
Employees per advisor
1.3derivedItem 5.A over advisors
Advisors per office
11.0derived1 offices incl. principal (1.F.5)
RAUM growth, one year
+15%derivedbetween the last two annual amendments
Advisor growth, one year
-8.3%derivedItem 5.B.3 between annual amendments
Client growth, one year
+4.1%derived
Compensation
percentage of assets, hourlyreportedItem 5.E
Advisory activities
financial planning, portfolio management for individuals, pension consulting, selection of other advisers, publications, educational seminarsreportedItem 5.G
Custody
$414M, 286 clientsreportedItem 9.A
Ownership
no PE, bank or public-company owner found on Schedule Aderived
Advisor book size
not public; not estimatedreported
Also answered yes on Form ADV
  • buys or sells securities as principal to or from clients (8.A.2)
  • has discretionary authority over which securities are bought or sold (8.C.1)
  • receives research or other products from a broker-dealer, soft dollars (8.E)
  • compensates persons for client referrals (8.G.1)
  • compensates non-employees for client referrals (8.G.2)
  • has custody of client cash or bank accounts (9.A.1.a)
  • has custody of client securities (9.A.1.b)
  • a related person has custody of client cash (9.B.1.a)
  • a related person has custody of client securities (9.B.1.b)
Where the RAUM sits
Form ADV Item 5.D, latest filing
  • High-net-worth individuals$979M88%
  • Individuals$97.7M8.8%
  • Charitable organizations$30.9M2.8%
  • Pension and profit-sharing plans$1.6M0.1%
  • Corporations and businesses$497,9080.0%
Individual clients
227reported
HNW clients
283reported
Pension plan clients
n/areported
Charitable clients
7reported
Accounts
1,999reported
Financial planning clients
101-250reported
Wrap fee programs
noreported
Custody of client assets
$414M for 286 clientsreported
Compensation
% of AUM, hourlyreported
Class basis
absent from the latest SEC rosterderived
Advisors registered through the firm
0 on IAPD today, longest tenure first
No representative is registered through this CRD on IAPD.
Advisor movement
12 left, 0 joined in 12 months
net -12 in 12 months0 left in 90 days0 joined in 90 days12 left over 36 months
Left, latest
Joined, latest
Every departureEvery arrival
Teams: two or more advisors moving together within fourteen days, from one state
    Teams outTeams in
    Private funds
    No private fund reported.
    Owners and control persons
    Schedule A and B, latest filing
    • Arthur Richard Davies · Partner, Chief Operating Officer, Chief Compliance Officercontrol
      since 02/2019 · owns 5% to 10%
    • Ann Jill Fopiano · CFA, CFP, Managing Member, Chief Executive Officer, Chief Investment Officercontrol
      since 09/2012 · owns 50% to 75%
    • Meltzer Elisabeth Zimmerman · CFP, Principal, Director Of Financial Planningcontrol
      since 05/1989 · owns 5% to 10%
    • Hugh Peter Berenson · Trustee
      since 07/2016 · owns F of Peter H. Berenson, Ttee, Stephanie O'Brien Gst Trust
    • Hugh Peter Berenson · Trustee
      since 07/2016 · owns F of Peter H. Berenson, Ttee, Marin O'Brien Belhoussein Gst Trust
    Entity owners
    • Peter H. Berenson, Ttee, Marin O'Brien Belhoussein Gst Trust · Member
      direct · owns 5% to 10%
    • Peter H. Berenson, Ttee, Stephanie O'Brien Gst Trust · Member
      direct · owns 5% to 10%
    Related persons
    Schedule D 7.A
    No related person reported.
    Office movement
    IAPD branch city; joins and departures in 12 months
    OfficeAdvisorsJoinedLeftTeams outForming
    Boston, Ma001
    Cambridge, Ma001
    Waltham, Ma · principal0010
    Offices
    Schedule D 1.F, the 25 largest
    No branch office listed.
    What changed
    consecutive filings, newest first
    • Financial planning clients · 101-250 to 101-250
      Mar 12, 2025 to Jul 17, 2025
    • Accounts · 2,054 to 1,999
      Jun 20, 2024 to Mar 12, 2025
    • Advisory employees · 12 to 11
      Jun 20, 2024 to Mar 12, 2025
    • Corporate clients · 0.0 to unset
      Jun 20, 2024 to Mar 12, 2025
    • HNW clients · 271 to 283
      Jun 20, 2024 to Mar 12, 2025
    • Individual clients · 219 to 227
      Jun 20, 2024 to Mar 12, 2025
    • Assets in custody · $324M to $414M
      Jun 20, 2024 to Mar 12, 2025
    • Employees · 15 to 14
      Jun 20, 2024 to Mar 12, 2025
    • State-registered IARs · 12 to 11
      Jun 20, 2024 to Mar 12, 2025
    • Discretionary RAUM · $962M to $1.1B
      Jun 20, 2024 to Mar 12, 2025
    • HNW RAUM · $858M to $979M
      Jun 20, 2024 to Mar 12, 2025
    • Individual RAUM · $76.1M to $97.7M
      Jun 20, 2024 to Mar 12, 2025
    • Pension RAUM · $2.5M to $1.6M
      Jun 20, 2024 to Mar 12, 2025
    • RAUM · $962M to $1.1B
      Jun 20, 2024 to Mar 12, 2025
    • Accounts · 1,914 to 2,054
      May 24, 2023 to Feb 26, 2024
    • Charity clients · 8 to 7
      May 24, 2023 to Feb 26, 2024
    • HNW clients · 264 to 271
      May 24, 2023 to Feb 26, 2024
    • Individual clients · 216 to 219
      May 24, 2023 to Feb 26, 2024
    • Assets in custody · $346M to $324M
      May 24, 2023 to Feb 26, 2024
    • State-registered IARs · 10 to 12
      May 24, 2023 to Feb 26, 2024
    • Discretionary RAUM · $834M to $962M
      May 24, 2023 to Feb 26, 2024
    • HNW RAUM · $746M to $858M
      May 24, 2023 to Feb 26, 2024
    • Individual RAUM · $65.8M to $76.1M
      May 24, 2023 to Feb 26, 2024
    • Pension RAUM · $2.2M to $2.5M
      May 24, 2023 to Feb 26, 2024
    • RAUM · $834M to $962M
      May 24, 2023 to Feb 26, 2024
    • Accounts · 1,871 to 1,914
      Oct 10, 2022 to Mar 8, 2023
    • Advisory employees · 11 to 12
      Oct 10, 2022 to Mar 8, 2023
    • Charity clients · 7 to 8
      Oct 10, 2022 to Mar 8, 2023
    • Corporate clients · unset to 0.0
      Oct 10, 2022 to Mar 8, 2023
    • HNW clients · 240 to 264
      Oct 10, 2022 to Mar 8, 2023
    • Individual clients · 222 to 216
      Oct 10, 2022 to Mar 8, 2023
    • Assets in custody · $304M to $346M
      Oct 10, 2022 to Mar 8, 2023
    • Employees · 13 to 15
      Oct 10, 2022 to Mar 8, 2023
    • HQ city · BOSTON to WALTHAM
      Oct 10, 2022 to Mar 8, 2023
    • State-registered IARs · 11 to 10
      Oct 10, 2022 to Mar 8, 2023
    • Discretionary RAUM · $948M to $834M
      Oct 10, 2022 to Mar 8, 2023
    • HNW RAUM · $826M to $746M
      Oct 10, 2022 to Mar 8, 2023
    • Individual RAUM · $94.3M to $65.8M
      Oct 10, 2022 to Mar 8, 2023
    • Pension RAUM · $3.6M to $2.2M
      Oct 10, 2022 to Mar 8, 2023
    • RAUM · $948M to $834M
      Oct 10, 2022 to Mar 8, 2023
    Signals
    16 dated events
    • O'Brien Wealth Partners Llc no longer on the SEC adviser roster (last listed 2026-03-02, RAUM $1.1B)
      Apr 1, 2026 · Left the SEC roster · derived
    • Matthew Christopher Kelley left O'Brien Wealth Partners Llc for Mercer Global Advisors Inc. (registered 2025-07-28)
      Mar 31, 2026 · Advisor changed firm · fact
    • Richard Arthur Davies left O'Brien Wealth Partners Llc for Mercer Global Advisors Inc. (registered 2025-07-16)
      Mar 31, 2026 · Advisor changed firm · fact
    • Jonathan A Smith left O'Brien Wealth Partners Llc for Mercer Global Advisors Inc. (registered 2025-07-28)
      Mar 31, 2026 · Advisor changed firm · fact
    • Timothy A. Pilczak left O'Brien Wealth Partners Llc for Mercer Global Advisors Inc. (registered 2025-07-16)
      Mar 31, 2026 · Advisor changed firm · fact
    • Leah Elizabeth Mccormack left O'Brien Wealth Partners Llc for Mercer Global Advisors Inc. (registered 2025-07-28)
      Mar 31, 2026 · Advisor changed firm · fact
    • Lauren Elizabeth Higgins left O'Brien Wealth Partners Llc for Mercer Global Advisors Inc. (registered 2025-07-16)
      Mar 31, 2026 · Advisor changed firm · fact
    • Jill Ann Fopiano left O'Brien Wealth Partners Llc for Mercer Global Advisors Inc. (registered 2025-07-16)
      Mar 31, 2026 · Advisor changed firm · fact
    • Austin Mitchell Litvak left O'Brien Wealth Partners Llc for Mercer Global Advisors Inc. (registered 2025-07-28)
      Mar 31, 2026 · Advisor changed firm · fact
    • Audrey Baker left O'Brien Wealth Partners Llc for Mercer Global Advisors Inc. (registered 2025-08-01)
      Mar 31, 2026 · Advisor changed firm · fact
    • Adelaide Patricia Magee left O'Brien Wealth Partners Llc for Mercer Global Advisors Inc. (registered 2025-07-28)
      Mar 31, 2026 · Advisor changed firm · fact
    • Elisabeth Meltzer Zimmerman left O'Brien Wealth Partners Llc for Mercer Global Advisors Inc. (registered 2025-07-14)
      Mar 31, 2026 · Advisor changed firm · fact
    • Qing Yang left O'Brien Wealth Partners Llc for Mercer Global Advisors Inc. (registered 2025-08-01)
      Mar 31, 2026 · Advisor changed firm · fact
    • O'Brien Wealth Partners LLC's advisors moved to Mercer Global Advisors Inc. (Waltham, MA): 12 of 12 registered, on the same day
      Mar 31, 2026 · Firm absorbed (people side) · derived
    • A Cynthia Kuppens (Cfp, Principal, Director Of Client Solutions) no longer on Schedule A of O'Brien Wealth Partners Llc (listed 2020-10-01, absent 2021-03-01)
      Mar 1, 2021 · Control person left · inference
    • Arthur Richard Davies (Cfp, Chief Compliance Officer) appeared on Schedule A of O'Brien Wealth Partners Llc
      Feb 13, 2019 · Control person joined · fact
    Across DFX
    shared identifiers only, never a name match
    No identifier-backed link to the venture, private equity, family office or sponsor graphs.
    Provenance
    Form ADV
    SEC filing data 2011 to 2024 and the monthly roster 2025 onreportedadviserinfo.sec.gov
    Advisors
    IAPD individual compilation feed, dailyreportedadviserinfo.sec.gov
    Class
    Former SEC-registered adviserderiveda rule over Items 5.D and 7.A
    RAUM per advisor
    n/aderivedfirm RAUM over the IAPD count; not a book size
    Loaded
    Sep 14, 2026