Foster Dykema Cabot & Partners provides financial planning, portfolio management for individuals and small businesses, portfolio management for pooled vehicles, portfolio management for institutions, selecting other managers, family office services, and insurance. Financial planning was provided to 1–10 clients last fiscal year. The firm advises 8 private funds.
Foster Dykema Cabot & Partners reports 851 clients. They include 718 high-net-worth individuals, 78 individual clients, and 32 corporations and other businesses. Of its assets, 100.0% ($2.22B across 855 accounts) are managed with discretion.
| Client type | Clients | Assets |
|---|---|---|
| Individuals (other than HNW) | 9% | 1% |
| High-net-worth individuals | 84% | 84% |
| Pooled investment vehicles | <1% | 5% |
| Pension and profit-sharing plans | Fewer than 5 | <1% |
| Charitable organizations | 2% | 3% |
| Other client typesCorporations and other businesses | 4% | 7% |
Client shares use reported counts. Client types without a reported count are excluded from that total.
Client breakdown and activity details
| Client type | Clients | Regulatory AUM | AUM share | Avg. per client |
|---|---|---|---|---|
| Individuals (other than HNW) | 78 | $26.2M | 1.2% | $336K |
| High-net-worth individuals | 718 | $1.87B | 83.9% | $2.6M |
| Pooled investment vehicles | 8 | $111M | 5.0% | $13.9M |
| Pension and profit-sharing plans | Fewer than 5 | $8.86M | 0.4% | — |
| Charitable organizations | 15 | $57.2M | 2.6% | $3.81M |
| Corporations and other businesses | 32 | $154M | 6.9% | $4.81M |
| Total | 851 | $2.22B | 100% | — |
- Clients
- 78
- Regulatory AUM
- $26.2M
- AUM share
- 1.2%
- Avg. per client
- $336K
- Clients
- 718
- Regulatory AUM
- $1.87B
- AUM share
- 83.9%
- Avg. per client
- $2.6M
- Clients
- 8
- Regulatory AUM
- $111M
- AUM share
- 5.0%
- Avg. per client
- $13.9M
- Clients
- Fewer than 5
- Regulatory AUM
- $8.86M
- AUM share
- 0.4%
- Avg. per client
- —
- Clients
- 15
- Regulatory AUM
- $57.2M
- AUM share
- 2.6%
- Avg. per client
- $3.81M
- Clients
- 32
- Regulatory AUM
- $154M
- AUM share
- 6.9%
- Avg. per client
- $4.81M
Total
- Clients
- 851
- Regulatory AUM
- $2.22B
- AUM share
- 100%
- Avg. per client
- —
- Clients outside the U.S.
- 0%
- Clients advised without assets under management last fiscal year
- 0
- Private funds advised
- 8
- Financial planning clients last fiscal year
- 1–10
Foster Dykema Cabot & Partners charges 0.65%–1.00% a year for its Standard fee schedule. Each asset band is charged at its own rate. The fee is billed in advance and requires an account of at least $20,000,000. The brochure also prices 2 other services, listed under fee details.
| Asset band | Annual rate |
|---|---|
| $0–$15M | 1.00% |
| $15M–$45M | 0.75% |
| $45M and above | 0.65% |
Fee details and sources
Other fees
- Estate administration
- Estate administration is charged a separate, negotiated, fixed fee.
- Financial planning, bookkeeping and investment advice
- Financial planning, bookkeeping and investment advice are charged on a negotiated, fixed fee basis.
Focus Operating, LLC owns 75% or more of Foster Dykema Cabot & Partners and is in turn owned by Focus Financial Partners, LLC (75% or more). The leadership team of Foster Dykema Cabot & Partners includes President Elizabeth Braudis, Chief Investment Officer Jeffrey McGrew and Chief Operating Officer Donnalee Guerin. It has 21 employees, 8 of them in advisory roles.
Leadership
- Elizabeth BraudisPresident, Partner
- Donnalee GuerinChief Operating Officer, Chief Compliance Officer, Partner
- Frederick FisherPortfolio Manager, Partner
- Brooke ManfrediPartner
- Jeffrey McGrewChief Investment Officer, Partner
- Vikram SoormaPortfolio Manager, Partner
Staff
- 21 employees
- 8 in advisory functions
- Owns 75% or more of Foster Dykema Cabot & Partners, LLC
Focus Operating, LLC
Control person · since January 2019
- Owns 75% or more of Focus Operating, LLC
Focus Financial Partners, LLC
Control person · since January 2007
- Owns 50% to 75% of Focus Financial Partners, LLC
Focus Financial Partners Inc.
Control person · since July 2018
- Owns 75% or more of Focus Financial Partners Inc.
Ferdinand FFP Acquisition, LLC
Control person · since August 2023
- Owns 75% or more of Ferdinand FFP Acquisition, LLC
Ferdinand FFP Intermediate Holdings, LLC
Control person · since August 2023
- Owns 75% or more of Ferdinand FFP Intermediate Holdings, LLC
Ferdinand FFP Parent, Inc.
Control person · since August 2023
- Owns 75% or more of Focus Financial Partners Inc.
Ferdinand FFP Ultimate Holdings, LP
Control person · since August 2023
- Owns 50% to 75% of Ferdinand FFP Ultimate Holdings, LP
CD&R Ferdinand Holdings, L.P.
Control person · since August 2023
- Owns 50% to 75% of CD&R Ferdinand Holdings, L.P.
Clayton Dubilier & Rice Fund Xii, L.P.
Control person · since August 2023
- Owns 25% to 50% of CD&R Ferdinand Holdings, L.P.
CD&R Ferdinand Co-Investor, L.P.
Control person · since August 2023
Foster Dykema Cabot & Partners’ regulatory assets grew from $1.51B (April 2021) to $2.22B (March 2026); clients rose from 665 to 851 and employees from 15 to 21.
Figures from each annual filing
| Filed | Regulatory AUM | Clients | Employees | Offices |
|---|---|---|---|---|
| March 2026 | $2.22B | 851 | 21 | 1 |
| April 2025 | $2B | 812 | 19 | 1 |
| April 2024 | $1.71B | 737 | 18 | 1 |
| May 2023 | $1.55B | 703 | 18 | 1 |
| March 2022 | $1.73B | 704 | 16 | 1 |
| April 2021 | $1.51B | 665 | 15 | 1 |
Besides its headquarters, Foster Dykema Cabot & Partners has 0 offices, with 1 listed address in Massachusetts.
Massachusetts · 1 listed address
- 1075 Main Street Suite 200, WalthamHQ
Contact and registration details
- Legal name
- Foster Dykema Cabot & Partners, LLC
- Headquarters
- 1075 Main Street Suite 200, Waltham, MA 02451
- Website
- fdcpartners.com
- Phone
- 617-423-3900
- SEC file
- 801-114693
- Founded
- 1967
- Structure
- Delaware LLC
- Fiscal year end
- December
Foster Dykema Cabot & Partners uses Fidelity ($1.76B, 82%) and J.P. Morgan ($375M, 18%) as custodians for its separately managed accounts. Foster Dykema Cabot & Partners has custody of $1.57B in client assets for 657 clients.
- J.P. MorganJPMorgan Chase · New York, NY · $375M18%
- FidelityFidelity Investments · Boston, MA · $1.76B82%
At year end, Foster Dykema Cabot & Partners’ separately managed accounts were mostly in funds (54%) and stocks (36%). Its reported 13F holdings for the quarter ended 30 June 2026 total $1.72B across 324 positions; the largest are State Str SPDR S&P 500 ETF T (18.1%), J P Morgan Exchange Traded F (14.2%) and iShares TR (12.4%).
What the accounts hold
- Stocks36%
- Funds54%
- Registered funds48%
- Pooled vehicles6%
- Bonds1%
- Cash2%
- Other7%
- Real estate, family holdings7%
Reported 13F holdings
- $1.72B
- Reported 13F value
- 324
- Positions
- 67.6%
- In the 10 largest
- +9.5%
- Value vs. prior quarter
- State Str SPDR S&P 500 ETF T · TR Unit18.1%
- J P Morgan Exchange Traded F · Ultra Shrt ETF14.2%
- iShares TR · Ultra Short Dur12.4%
- Amphenol Corp. · CL A5.0%
- Quanta Svcs Inc.4.0%
- Alphabet Inc. · Cap Stk CL A3.4%
- Amazon Com Inc.3.3%
- Microsoft Corp.2.5%
- Costco Wholesale Corporation2.4%
- American Express CO2.3%
Together, the ten largest are 67.6% of reported value.
How many clients does Foster Dykema Cabot & Partners have?
Foster Dykema Cabot & Partners has 851 clients and manages $2.22 billion for them, as of March 2026. They include 718 high-net-worth individuals, 78 individual clients, and 32 corporations and other businesses.
Source: Form ADV Part 1A, Items 5.D and 5.F, filed 27 March 2026
What services does Foster Dykema Cabot & Partners offer?
Foster Dykema Cabot & Partners provides financial planning, portfolio management for individuals and small businesses, portfolio management for pooled vehicles, portfolio management for institutions, selecting other managers, family office services, and insurance.
Source: Form ADV Part 1A, Item 5.G, from the SEC's 2 October 2026 data file; Part 2A brochure, Item 4
How much does Foster Dykema Cabot & Partners charge?
Foster Dykema Cabot & Partners charges 0.65%–1.00% a year for its Standard fee schedule. Each asset band is charged at its own rate. The fee is billed in advance and requires an account of at least $20,000,000.
Source: 2026 FDC FORM ADV PART 2A (3.27.26), filed 27 March 2026
Which custodians does Foster Dykema Cabot & Partners use?
Foster Dykema Cabot & Partners’ separately managed account assets are held at Fidelity Investments (Boston, MA), with $1.76B and JPMorgan Chase (New York, NY), with $375M. Only custodians holding at least a tenth of those assets are named.
Source: Form ADV Part 1A, Schedule D, Section 5.K.(3), filed 27 March 2026
How many financial advisors does Foster Dykema Cabot & Partners have?
Foster Dykema Cabot & Partners has 0 investment adviser representatives registered with state securities authorities, out of 21 employees, and 8 perform investment advisory functions. None are registered representatives of a broker-dealer or licensed insurance agents.
Source: Form ADV Part 1A, Items 5.A and 5.B, from the SEC's 2 October 2026 data file
What does Foster Dykema Cabot & Partners invest in?
At the end of its last fiscal year, Foster Dykema Cabot & Partners’ separately managed accounts held 48% registered funds (mutual funds, ETFs, BDCs), 36% exchange-traded equities, 7% other, 6% pooled vehicles (private funds and similar), 2% cash and equivalents and 1% state and local bonds. The 7% other category is described as: Real Estate, Family Holdings. It advises 8 private funds.
Source: Form ADV Part 1A, Items 5.K.(1) and 7.B, from the SEC's 2 October 2026 data file
Does Foster Dykema Cabot & Partners have a minimum investment?
Yes, Foster Dykema Cabot & Partners’ minimum account size for its Standard fee schedule is $20M.
Source: 2026 FDC FORM ADV PART 2A (3.27.26), filed 27 March 2026
Who owns Foster Dykema Cabot & Partners?
Foster Dykema Cabot & Partners is owned through a chain of holding companies by Ferdinand FFP Parent, Inc., CD&R Ferdinand Co-Investor, L.P. and Clayton Dubilier & Rice Fund Xii, L.P. Its direct owner is Focus Operating, LLC (75% or more).
Source: Form ADV Part 1A, Schedules A and B, filed 27 March 2026
How does Foster Dykema Cabot & Partners get paid?
Foster Dykema Cabot & Partners is paid through a percentage of assets under management and fixed fees. Its Form ADV lists no commissions or performance-based fees among how it is paid.
Source: Form ADV Part 1A, Item 5.E, from the SEC's 2 October 2026 data file
Is Foster Dykema Cabot & Partners registered with the SEC?
Yes, Foster Dykema Cabot & Partners has been registered with the SEC as an investment adviser since 12 February 2019. Its CRD number is 300282 and its SEC file number is 801-114693.
Source: Form ADV Part 1A, Item 1, filed 27 March 2026; IAPD firm record
How do I contact Foster Dykema Cabot & Partners?
Foster Dykema Cabot & Partners’ main office is at 1075 Main Street Suite 200, Waltham, MA 02451. Its phone number is 617-423-3900. Its website is fdcpartners.com.