Park Avenue Institutional Advisers LLC — 13F Holdings & Portfolio
CIK 1640801 · latest 13F-HR filed 2026-08-04
Park Avenue Institutional Advisers LLC manages $198.7M in 13F-reported U.S. long-equity assets across 2 reported positions as of its 2026-06-30 13F-HR filing. Its largest disclosed positions are JA (50.38%), JABS (49.62%). Quarter over quarter (versus its 2026-03-31 filing) the fund opened 0 new positions and exited 3; 0 existing positions rose in reported value and 0 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 2026-08-04
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
3 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 Mar 27, 2026.
NEW YORK, NY 10001
| Name | Title / Status | Ownership | Type |
|---|---|---|---|
| BESSEL, MICHAEL, JOSEPH Control | CHIEF COMPLIANCE OFFICER since Feb 2015 | Less than 5% | Individual |
| FLANNIGAN, JOHN, HUNTER Control | LLC MANAGER since May 2018 | Less than 5% | Individual |
| GUARDIAN INVESTOR SERVICES LLC Control | MEMBER since Feb 2015 | 75% or more | Domestic Entity |
| LIOLIS, NICHOLAS Control | CHIEF INVESTMENT OFFICER since Jan 2023 | Less than 5% | Individual |
| LOWENBRAUN, ISAAC, HIRSCH Control | PRESIDENT, SENIOR MANAGING DIRECTOR AND LLC MANAGER since Aug 2024 | Less than 5% | Individual |
| UDICIOUS, DEBRA, ANNE Control | LLC MANAGER since Aug 2024 | Less than 5% | Individual |
| WEISS, LARRY, MARK Control | HEAD OF ASSET MANAGEMENT ACCOUNTING & MUTUAL FUND TREASURER since Aug 2024 | Less than 5% | Individual |
| THE GUARDIAN LIFE INSURANCE COMPANY OF AMERICA Control Indirect owner via GUARDIAN INVESTOR SERVICES LLC | OWNER since Feb 2015 | 75% or more | Domestic Entity |
Ownership & leadership changes · 9 filings with changes since Feb 26, 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.
- ChangedLOWENBRAUN, ISAAC, HIRSCH · title PRESIDENT AND SENIOR MANAGING DIRECTOR → PRESIDENT, SENIOR MANAGING DIRECTOR AND LLC MANAGER
- No longer listedECKER, ROBERTO, CARLOS · LLC MANAGER · Less than 5% · control person · listed since May 2016
- No longer listedLiggio, Andrew, Charles · LLC MANAGER · Less than 5% · control person · listed since May 2023
- No longer listedO'ROURKE, ROBERT, TREANOR · PRESIDENT · Less than 5% · control person · listed since Mar 2021
- No longer listedWALTER, JOHN, HAROLD · SR. VICE PRESIDENT AND CHIEF FINANCIAL OFFICER · Less than 5% · control person · listed since Feb 2015
- AddedLOWENBRAUN, ISAAC, HIRSCH · PRESIDENT AND SENIOR MANAGING DIRECTOR · Less than 5% · control person
- AddedUDICIOUS, DEBRA, ANNE · LLC MANAGER · Less than 5% · control person
- AddedWEISS, LARRY, MARK · HEAD OF ASSET MANAGEMENT ACCOUNTING & MUTUAL FUND TREASURER · Less than 5% · control person
- No longer listedJABLANSKY, PAUL, ERIC · LLC MANAGER · Less than 5% · control person · listed since Mar 2021
- AddedLiggio, Andrew, Charles · LLC MANAGER · Less than 5% · control person
- No longer listedLATORRE, JEAN, CASEY · CHIEF INVESTMENT OFFICER · Less than 5% · control person · listed since Feb 2020
- AddedLIOLIS, NICHOLAS · CHIEF INVESTMENT OFFICER · Less than 5% · control person
- ChangedBESSEL, MICHAEL, JOSEPH · now a control person
- No longer listedDUPONT, DOUGLAS · PRESIDENT AND LLC MANAGER · Less than 5% · control person · listed since May 2016
- AddedJABLANSKY, PAUL, ERIC · LLC MANAGER · Less than 5% · control person
- AddedO'ROURKE, ROBERT, TREANOR · PRESIDENT · Less than 5% · control person
- No longer listedSORELL, THOMAS, GEORGE · CHIEF INVESTMENT OFFICER · Less than 5% · control person · listed since Feb 2015
- AddedLATORRE, JEAN, CASEY · CHIEF INVESTMENT OFFICER · Less than 5% · control person
- No longer listedTHOMPSON, ROBERT, WILLIAM · LLC MANAGER · Less than 5% · control person · listed since May 2016
- Listed againFLANNIGAN, JOHN, HUNTER · LLC MANAGER · Less than 5% · control person
- ChangedWALTER, JOHN, HAROLD · title SR. VICE PRESIDENT AND CONTROLLER → SR. VICE PRESIDENT AND CHIEF FINANCIAL OFFICER
- No longer listedCEFOLE, MICHAEL, BERNARD · PRESIDENT AND LLC MANAGER · Less than 5% · control person · listed since Feb 2015
- No longer listedFERIK, MICHAEL, NICHOLAS · LLC MANAGER · Less than 5% · control person · listed since Feb 2015
- No longer listedFLANNIGAN, JOHN, HUNTER · LLC MANAGER · Less than 5% · control person · listed since Feb 2015
- AddedDUPONT, DOUGLAS · PRESIDENT AND LLC MANAGER · Less than 5% · control person
- AddedECKER, ROBERTO, CARLOS · LLC MANAGER · Less than 5% · control person
- AddedTHOMPSON, ROBERT, WILLIAM · LLC MANAGER · Less than 5% · control person
- ListedBESSEL, MICHAEL, JOSEPH · CHIEF COMPLIANCE OFFICER · Less than 5%
- ListedCEFOLE, MICHAEL, BERNARD · PRESIDENT AND LLC MANAGER · Less than 5% · control person
- ListedFERIK, MICHAEL, NICHOLAS · LLC MANAGER · Less than 5% · control person
- ListedFLANNIGAN, JOHN, HUNTER · LLC MANAGER · Less than 5% · control person
- ListedGUARDIAN INVESTOR SERVICES LLC · MEMBER · 75% or more · control person
- ListedSORELL, THOMAS, GEORGE · CHIEF INVESTMENT OFFICER · Less than 5% · control person
- ListedTHE GUARDIAN LIFE INSURANCE COMPANY OF AMERICA · OWNER · 75% or more · indirect via GUARDIAN INVESTOR SERVICES LLC · control person
- ListedWALTER, JOHN, HAROLD · SR. VICE PRESIDENT AND CONTROLLER · 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.
Exited Positions
- REVOLUTION MEDICINES INC$497.4K
- Braze Inc$209.9K
- ServiceTitan Inc$175.0K
Park Avenue Institutional Advisers LLC 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).
| Period | Filed | AUM | Holdings | Accession |
|---|---|---|---|---|
| 2026-06-30 | 2026-08-04 | $198.7M | 2 | 0001193125-26-331696 |
| 2026-03-31 | 2026-05-05 | $199.2M | 5 | 0001193125-26-206517 |
| 2025-12-31 | 2026-02-10 | $1.0M | 3 | 0001193125-26-044450 |
NEW YORK, NY 10001