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Holocene Advisors

SEC-registered adviser since 2017New York, NYCRD 287999

7
Clients
51
Advisory staff

From Form ADV filed 27 March 2026 · data retrieved 15 October 2026SEC record

Holocene Advisors is an investment adviser headquartered in New York, New York, and registered with the SEC since 2017. Its clients include pooled investment vehicles.

Its services include portfolio management for pooled vehicles. Fee arrangements include a percentage of assets under management and performance-based fees. Flett Haley Grantor Retained Annuity Trust owns 50% to 75% of Holocene Advisors.

Clients

Holocene Advisors serves 7 clients. The average client has about $7.20 billion with the firm.

Regulatory assets by client type
  • Pooled investment vehicles7 clients100%
Show client breakdown
Pooled investment vehicles
Clients
7
Regulatory AUM
$50,429,577,436
Share
100.0%
Avg. per client
$7.20B

Total

Clients
7
Regulatory AUM
$50,429,577,436
Share
100%
Avg. per client
$7.20B

What it does

Holocene Advisors provides portfolio management for pooled vehicles. It is paid through a percentage of assets and performance-based fees.

Holocene Advisors advises 2 private funds.

100.0% of assets ($50.43B across 7 accounts) are managed with discretion. 29% of clients are outside the U.S., and 0 clients received advice without assets under management last fiscal year.

Custodians

Holocene Advisors has custody of $50.43B for 7 clients.

Managed account assets by custodian
  • All other custodians$50.43B100%

Ownership and leadership

Flett Haley Grantor Retained Annuity Trust owns 50% to 75% of Holocene Advisors.

Who owns the firm
Holocene Advisors, LP· the adviser
  • Flett Haley Grantor Retained Annuity Trust

    Control person · since May 2018

    Owns 50% to 75% of Holocene Advisors, LP
  • Anna Flett

    since March 2022

    Owns 50% to 75% of Holocene Advisors, LP
  • Jennifer Marcus

    since June 2023

    Owns 50% to 75% of Holocene Advisors, LP
  • John Haley

    Control person · since March 2016

    Owns 25% to 50% of Holocene Advisors, LP
  • Anna Flett Irrevocable Family Trust of 2016

    Control person · since May 2018

    Owns 25% to 50% of Holocene Advisors, LP

Leadership

  • Bradley Walbridge
    Chief Financial Officer
  • Albert Boston
    Chief Operating Officer
  • Eric Albert
    Chief Compliance Officer & Legal Counsel
  • Brian Fortune
    General Counsel
  • John Haley
    Chief Investment Officer
  • Vishal Soni
    Chief Risk Officer
  • Anna Flett
    Trustee, Flett Haley Grantor Retained Annuity Trust
  • Jennifer Marcus
    Trustee, Flett Haley Grantor Retained Annuity Trust

Staff

  • 115 employees
  • 51 in advisory functions

Reported holdings

Holocene Advisors’ reported 13F holdings total $44.38B across 789 positions, and the ten largest make up 26.1% of it.

$44.38B
Reported 13F value
789
Positions
26.1%
In the 10 largest
+7.0%
Value vs. prior quarter
Ten largest positions, share of reported value
  1. Amazon Com Inc.7.5%
  2. Microsoft Corp.3.6%
  3. Tesla Inc.3.4%
  4. Nvidia Corporation2.7%
  5. GE Aerospace1.7%
  6. Advanced Micro Devices Inc.1.6%
  7. Danaher Corp. Del1.5%
  8. Visa Inc. · Com CL A1.5%
  9. Sherwin Williams CO1.4%
  10. Parker-hannifin Corp.1.2%

Together, the ten largest are 26.1% of reported value.

The 50 largest positions and quarterly changesQuarter ended 30 June 2026 · filed 14 August 2026

A 13F covers only exchange-traded long positions the firm holds with discretion, so this $44.38B is not its $50.43B in regulatory assets and does not represent any individual client's portfolio.

Fees

Holocene Advisors is paid through a percentage of assets under management and performance-based fees.

Brochure fee details have not yet been processed for this profile. Find its brochure on the SEC’s site.

Offices and registrations

Besides its headquarters, Holocene Advisors has 0 offices, with 1 listed address in 1 state.

Listed office addresses by state

New York · 1 listed address

  • 15 East 26th ST., 8th Floor, New YorkHQ

Registration details

Legal name
Holocene Advisors, LP
Headquarters
15 East 26th ST., 8th Floor, New York, NY 10010
SEC file
801-110222
Structure
Delaware limited partnership
Fiscal year end
December

This directory does not report disciplinary history, for any firm or individual, in either direction. The SEC publishes the complete record, including any disciplinary events, and it is the authoritative place to check one. See this firm's record on adviserinfo.sec.gov

Common questions

How many clients does Holocene Advisors have?

Holocene Advisors has 7 clients and manages $50.4 billion for them, as of March 2026.

Source: Form ADV Part 1A, Items 5.D and 5.F, filed 27 March 2026

What services does Holocene Advisors offer?

Holocene Advisors provides portfolio management for pooled vehicles.

Source: Form ADV Part 1A, Item 5.G, from the SEC's 2 October 2026 data file

How many financial advisors does Holocene Advisors have?

Holocene Advisors has 0 investment adviser representatives registered with state securities authorities, out of 115 employees, and 51 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

Who owns Holocene Advisors?

Holocene Advisors’ direct owners are John Haley (25% to 50%), Flett Haley Grantor Retained Annuity Trust (50% to 75%), Anna Flett Irrevocable Family Trust of 2016 (25% to 50%), Anna Flett (50% to 75%) and Jennifer Marcus (50% to 75%).

Source: Form ADV Part 1A, Schedules A and B, filed 27 March 2026

How does Holocene Advisors get paid?

Holocene Advisors is paid through a percentage of assets under management and performance-based fees. Its Form ADV lists no commissions among how it is paid.

Source: Form ADV Part 1A, Item 5.E, from the SEC's 2 October 2026 data file

Sources

  1. Form ADV Part 1A, amendment filed 27 March 2026. Items 1, 5, 9, 11 and Schedules A, B and D.
  2. IAPD firm record, CRD 287999.
  3. Form 13F-HR, filed 14 August 2026 for the quarter ended 30 June 2026.

Retrieved 15 October 2026. All are published by the SEC and may have been amended since.

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This profile is compiled from public regulatory filings and is provided for informational purposes only. Niva Wealth is not affiliated with Holocene Advisors, LP and makes no representation about the quality of its services. Figures reflect the filing dates shown and may have changed. Ownership percentages are the bands reported to the SEC, not exact figures.