Atairos Group, Inc. — 13F Holdings & Portfolio
CIK 1671122 · latest 13F-HR filed 2026-08-14
Atairos Group, Inc. manages $1.76B in 13F-reported U.S. long-equity assets across 5 reported positions as of its 2026-06-30 13F-HR filing. Its largest disclosed positions are TNET (50.98%), LUCK (27.02%), LTH (20.40%). Quarter over quarter (versus its 2026-03-31 filing) the fund opened 1 new position and exited 0; 2 existing positions rose in reported value and 2 fell.
AUM is the long-equity portion reported on Form 13F-HR. Excludes short positions, cash, foreign holdings, and non-13F assets. For informational purposes only — not investment advice.
Long-equity book
Distinct positions
Filed 2026-08-14
vs 2026-03-31
Portfolio charts
Latest quarter's book, what changed, and how the portfolio has evolved across filings.
Portfolio map
Q2 26Box size = position value; colour = change in share count vs the prior quarter (green added, red trimmed, blue new). Rows split across managers or share classes are combined. Click a box for the stock.
Sector mix
% of 13F valueSectors from each company's SIC code; funds and ETFs grouped separately.
Biggest buys and sells
Q1 26 → Q2 26Estimated from the change in shares held × the quarter-end price, so price moves alone don't count as buying. New and exited positions are included.
13F assets and positions
4 quartersTotal reported 13F value (bars) and number of positions (line) each quarter. Value changes include market moves.
Top positions over time
reported valueThe eight largest current positions, valued at each quarter end.
Concentration
top 10 = 100%Cumulative share of the portfolio held in the largest N positions.
As of the firm’s regulatory filing dated Jul 21, 2026.
BRYN MAWR, PA 19010
| Name | Title / Status | Ownership | Type |
|---|---|---|---|
| ANGELAKIS, MICHAEL, JAMES Control | CHAIRMAN / CHIEF EXECUTIVE OFFICER since Oct 2015 | Less than 5% | Individual |
| ATAIROS FAMILY GP, LLC Control | GENERAL PARTNER since Jun 2015 | Less than 5% | Domestic Entity |
| Caplan, David, Lyle Control | VICE PRESIDENT / GENERAL COUNSEL since Jan 2016 | Less than 5% | Individual |
| EVANS, ALEXANDER, DONNELL Control | VICE PRESIDENT since Jan 2016 | Less than 5% | Individual |
| KELLY, CLARE, MCGRORY Control | CHIEF FINANCIAL OFFICER / CHIEF COMPLIANCE OFFICER since Jan 2016 | Less than 5% | Individual |
| THE REVOCABLE DEED OF TRUST OF MICHAEL J. ANGELAKIS DATED OCTOBER 25, 1999, AS AMENDED Control | TRUST since Mar 2025 | 75% or more | Domestic Entity |
| ANGELAKIS, MICHAEL, JAMES Control Indirect owner via THE REVOCABLE DEED OF TRUST OF MICHAEL J. ANGELAKIS DATED OCTOBER 25, 1999, AS AMENDED | TRUSTEE since Mar 2025 | General partner, trustee or manager | Individual |
| THE REVOCABLE DEED OF TRUST OF MICHAEL J. ANGELAKIS DATED OCTOBER 25, 1999, AS AMENDED Control Indirect owner via ATAIROS FAMILY GP, LLC | MEMBER since Mar 2025 | 75% or more | Domestic Entity |
Ownership & leadership changes · 5 filings with changes since Oct 30, 2015
From the firm’s regulatory filings, newest first. Dates are filing dates: a filing that no longer lists someone does not say when they left.
- No longer listedANGELAKIS, MICHAEL, JAMES · MEMBER · 75% or more · indirect via ATAIROS FAMILY GP, LLC · control person · listed since Jun 2015
- AddedANGELAKIS, MICHAEL, JAMES · TRUSTEE · General partner, trustee or manager · indirect via THE REVOCABLE DEED OF TRUST OF MICHAEL J. ANGELAKIS DATED OCTOBER 25, 1999, AS AMENDED · control person
- AddedTHE REVOCABLE DEED OF TRUST OF MICHAEL J. ANGELAKIS DATED OCTOBER 25, 1999, AS AMENDED · TRUST · 75% or more · control person
- AddedTHE REVOCABLE DEED OF TRUST OF MICHAEL J. ANGELAKIS DATED OCTOBER 25, 1999, AS AMENDED · MEMBER · 75% or more · indirect via ATAIROS FAMILY GP, LLC · control person
- ChangedANGELAKIS, MICHAEL, JAMES · title CHAIRMAN / CHIEF EXECUTIVE OFFICER / LIMITED PARTNER → CHAIRMAN / CHIEF EXECUTIVE OFFICER; ownership 75% or more → Less than 5%
- No longer listedWong Bethell, Melissa · DIRECTOR · Less than 5% · control person · listed since Jul 2018
- No longer listedANGELAKIS, MICHAEL, JAMES · SHAREHOLDER · 75% or more · indirect via ATAIROS FAMILY GP, INC. · control person · listed since Jun 2015
- No longer listedATAIROS FAMILY GP, INC. · GENERAL PARTNER · Less than 5% · control person · listed since Jun 2015
- No longer listedATAIROS MANAGEMENT UK 1, LIMITED · MEMBER / DESIGNATED MEMBER · 75% or more · control person · listed since Apr 2018
- AddedANGELAKIS, MICHAEL, JAMES · MEMBER · 75% or more · indirect via ATAIROS FAMILY GP, LLC · control person
- AddedATAIROS FAMILY GP, LLC · GENERAL PARTNER · Less than 5% · control person
- AddedATAIROS MANAGEMENT UK 1, LIMITED · MEMBER / DESIGNATED MEMBER · 75% or more · control person
- ChangedWong Bethell, Melissa · title DIRECTOR → EXECUTIVE OFFICER / MEMBER / DESIGNATED MEMBER
- ChangedWong Bethell, Melissa · title EXECUTIVE OFFICER / MEMBER / DESIGNATED MEMBER → DIRECTOR
- AddedWong Bethell, Melissa · DIRECTOR · Less than 5% · control person
- AddedCaplan, David, Lyle · VICE PRESIDENT / GENERAL COUNSEL · Less than 5% · control person
- AddedEVANS, ALEXANDER, DONNELL · VICE PRESIDENT · Less than 5% · control person
- AddedKELLY, CLARE, MCGRORY · CHIEF FINANCIAL OFFICER / CHIEF COMPLIANCE OFFICER · Less than 5% · control person
- ChangedANGELAKIS, MICHAEL, JAMES · title CHIEF EXECUTIVE OFFICER / CHIEF FINANCIAL OFFICER / CHIEF OPERATING OFFICER / CHIEF COMPLIANCE OFFICER / LIMITED PARTNER → CHAIRMAN / CHIEF EXECUTIVE OFFICER / LIMITED PARTNER
- ListedANGELAKIS, MICHAEL, JAMES · CHIEF EXECUTIVE OFFICER / CHIEF FINANCIAL OFFICER / CHIEF OPERATING OFFICER / CHIEF COMPLIANCE OFFICER / LIMITED PARTNER · 75% or more · control person
- ListedANGELAKIS, MICHAEL, JAMES · SHAREHOLDER · 75% or more · indirect via ATAIROS FAMILY GP, INC. · control person
- ListedATAIROS FAMILY GP, INC. · GENERAL PARTNER · Less than 5% · control person
Quarter-over-quarter changes
Changes in reported position value vs the prior 13F, so price moves count too, not just shares bought or sold.
Top Adds (vs prior quarter)
- TRINET GROUP INC$236.2M +35.8%
- XPONENTIAL FITNESS INC$203.0K +15.0%
Atairos Group, Inc. Holdings (2026-06-30)
Rows tagged Call or Put are options positions, not stock. Per SEC Form 13F-HR, Value shows the notional value of the underlying (shares covered × underlying price), not the option premium. Shares is the number of underlying shares covered (divide by 100 for contract count).
| # | Issuer | Symbol | CUSIP | Value | Weight | Shares | Type |
|---|---|---|---|---|---|---|---|
| 1 | TRINET GROUP INC | TNET | 896288107 | $895.1M | 50.98% | 18,085,773 | SH |
| 2 | LUCKY STRIKE ENTERTAINMENT CORP | LUCK | 10258P102 | $474.4M | 27.02% | 63,425,788 | SH |
| 3 | LIFE TIME GROUP HOLDINGS, INC. | LTH | 53190C102 | $358.2M | 20.40% | 8,770,000 | SH |
| 4 | CLARIVATE PLC | CLVT | G21810109 | $26.5M | 1.51% | 12,259,847 | SH |
| 5 | XPONENTIAL FITNESS INC | XPOF | 98422X101 | $1.6M | 0.09% | 225,550 | SH |
| Period | Filed | AUM | Holdings | Accession |
|---|---|---|---|---|
| 2026-06-30 | 2026-08-14 | $1.76B | 5 | 0000950103-26-012367 |
| 2026-03-31 | 2026-05-15 | $1.22B | 4 | 0000950103-26-007249 |
| 2025-12-31 | 2026-02-17 | $1.65B | 4 | 0000950103-26-002191 |
| 2025-09-30 | 2025-11-14 | $1.98B | 5 | 0000950103-25-014719 |
BRYN MAWR, PA 19010