One Rock Capital Partners, LLC — 13F Holdings & Portfolio
CIK 2061426 · latest 13F-HR filed 2026-08-14
One Rock Capital Partners, LLC manages $2.84B in 13F-reported U.S. long-equity assets across 1 reported positions as of its 2026-06-30 13F-HR filing. Its largest disclosed positions are PRMB (100.00%). Quarter over quarter (versus its 2026-03-31 filing) the fund opened 0 new positions and exited 0; 1 existing position 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 2026-08-14
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
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 31, 2026.
39TH FLOOR
NEW YORK, NY 10111
| Name | Title / Status | Ownership | Type |
|---|---|---|---|
| ADAMOLEKUN, FOLA, (NMN) Control | CHIEF COMPLIANCE OFFICER, GENERAL COUNSEL since Sep 2021 | Less than 5% | Individual |
| KELLEHER, ANNA, PATRICIA Control | CHIEF FINANCIAL OFFICER since May 2018 | Less than 5% | Individual |
| LEE, TONY, WON Control | MANAGING PARTNER since Aug 2011 | Less than 5% | Individual |
| ONE ROCK CAPITAL PARTNERS HOLDCO, LP Control | MANAGING MEMBER since Oct 2022 | 75% or more | Domestic Entity |
| SPIELVOGEL, ROBERT, SCOTT Control | MANAGING PARTNER since Aug 2011 | Less than 5% | Individual |
| LEE, TONY, WON Control Indirect owner via ONE ROCK CAPITAL PARTNERS HOLDCO, LP | LIMITED PARTNER since Oct 2022 | 50–75% | Individual |
| ONE ROCK CAPITAL PARTNERS HOLDCO GP, LLC Control Indirect owner via ONE ROCK CAPITAL PARTNERS HOLDCO, LP | GENERAL PARTNER since Oct 2022 | General partner, trustee or manager | Domestic Entity |
| SPIELVOGEL, ROBERT, SCOTT Control Indirect owner via ONE ROCK CAPITAL PARTNERS HOLDCO, LP | LIMITED PARTNER since Oct 2022 | 25–50% | Individual |
Ownership & leadership changes · 8 filings with changes since Aug 23, 2012
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.
- AddedLEE, TONY, WON · LIMITED PARTNER · 50–75% · indirect via ONE ROCK CAPITAL PARTNERS HOLDCO, LP · control person
- AddedONE ROCK CAPITAL PARTNERS HOLDCO GP, LLC · GENERAL PARTNER · General partner, trustee or manager · indirect via ONE ROCK CAPITAL PARTNERS HOLDCO, LP · control person
- AddedONE ROCK CAPITAL PARTNERS HOLDCO, LP · MANAGING MEMBER · 75% or more · control person
- AddedSPIELVOGEL, ROBERT, SCOTT · LIMITED PARTNER · 25–50% · indirect via ONE ROCK CAPITAL PARTNERS HOLDCO, LP · control person
- ChangedLEE, TONY, WON · title MANAGING MEMBER → MANAGING PARTNER; ownership 50–75% → Less than 5%
- ChangedSPIELVOGEL, ROBERT, SCOTT · title MANAGING MEMBER → MANAGING PARTNER; ownership 25–50% → Less than 5%
- ChangedLEE, TONY, WON · ownership 25–50% → 50–75%
- ChangedSPIELVOGEL, ROBERT, SCOTT · ownership 50–75% → 25–50%
- No longer listedMC EMERGING CAPITAL PARTNERS B.V. · NON-MANAGING MEMBER · 25–50% · control person · listed since Aug 2011
- No longer listedMITSUBISHI CORPORATION · PARENT, MC EMERGING CAPITAL PARTNERS B.V. · 75% or more · indirect via MC EMERGING CAPITAL PARTNERS B.V. · control person · listed since Jan 1990
- ChangedLEE, TONY, WON · ownership 50–75% → 25–50%
- ChangedSPIELVOGEL, ROBERT, SCOTT · ownership 5–10% → 50–75%
- No longer listedMC CAPITAL, INC · NON-MANAGING MEMBER / NON-MANAGING MEMBER, ONE ROCK CAPITAL PARTNERS GP, LLC / NON-MANAGING MEMBER, ONE ROCK CAPITAL PARTNERS II GP, LLC · 25–50% · control person · listed since Aug 2011
- No longer listedMITSUBISHI CORPORATION · PARENT, MC CAPITAL, INC. · 75% or more · indirect via MC CAPITAL, INC. · control person · listed since Jan 1990
- AddedADAMOLEKUN, FOLA, (NMN) · CHIEF COMPLIANCE OFFICER, GENERAL COUNSEL · Less than 5% · control person
- AddedMC EMERGING CAPITAL PARTNERS B.V. · NON-MANAGING MEMBER · 25–50% · control person
- AddedMITSUBISHI CORPORATION · PARENT, MC EMERGING CAPITAL PARTNERS B.V. · 75% or more · indirect via MC EMERGING CAPITAL PARTNERS B.V. · control person
- ChangedKELLEHER, ANNA, PATRICIA · title CHIEF COMPLIANCE OFFICER → CHIEF FINANCIAL OFFICER
- ChangedLEE, TONY, WON · title MANAGING MEMBER / MANAGING MEMBER, ONE ROCK CAPITAL PARTNERS GP, LLC / MANAGING MEMBER, ONE ROCK CAPITAL PARTNERS II GP, LLC → MANAGING MEMBER
- ChangedSPIELVOGEL, ROBERT, SCOTT · title MANAGING MEMBER / MANAGING MEMBER, ONE ROCK CAPITAL PARTNERS GP, LLC / MANAGING MEMBER, ONE ROCK CAPITAL PARTNERS II GP, LLC → MANAGING MEMBER; ownership 10–25% → 5–10%
- AddedKELLEHER, ANNA, PATRICIA · CHIEF COMPLIANCE OFFICER · Less than 5% · control person
- ChangedLEE, TONY, WON · title MANAGING MEMBER, CHIEF COMPLIANCE OFFICER / MANAGING MEMBER, ONE ROCK CAPITAL PARTNERS GP, LLC / MANAGING MEMBER, ONE ROCK CAPITAL PARTNERS II GP, LLC → MANAGING MEMBER / MANAGING MEMBER, ONE ROCK CAPITAL PARTNERS GP, LLC / MANAGING MEMBER, ONE ROCK CAPITAL PARTNERS II GP, LLC
- ChangedLEE, TONY, WON · title MANAGING MEMBER, CHIEF COMPLIANCE OFFICER / MANAGING MEMBER, ONE ROCK CAPITAL PARTNERS GP, LLC → MANAGING MEMBER, CHIEF COMPLIANCE OFFICER / MANAGING MEMBER, ONE ROCK CAPITAL PARTNERS GP, LLC / MANAGING MEMBER, ONE ROCK CAPITAL PARTNERS II GP, LLC
- ChangedMC CAPITAL, INC · title NON-MANAGING MEMBER / NON-MANAGING MEMBER, ONE ROCK CAPITAL PARTNERS GP, LLC → NON-MANAGING MEMBER / NON-MANAGING MEMBER, ONE ROCK CAPITAL PARTNERS GP, LLC / NON-MANAGING MEMBER, ONE ROCK CAPITAL PARTNERS II GP, LLC
- ChangedSPIELVOGEL, ROBERT, SCOTT · title MANAGING MEMBER / MANAGING MEMBER, ONE ROCK CAPITAL PARTNERS GP, LLC → MANAGING MEMBER / MANAGING MEMBER, ONE ROCK CAPITAL PARTNERS GP, LLC / MANAGING MEMBER, ONE ROCK CAPITAL PARTNERS II GP, LLC
- ChangedLEE, TONY, WON · title MANAGING MEMBER, CHIEF COMPLIANCE OFFICER / MANAGING MEMBER, ONE ROCK CAPITAL PARTNERS GP, LLC / MANAGING MEMBER, ONE ROCK INTERIM PARTNERS, LLC → MANAGING MEMBER, CHIEF COMPLIANCE OFFICER / MANAGING MEMBER, ONE ROCK CAPITAL PARTNERS GP, LLC
- ChangedSPIELVOGEL, ROBERT, SCOTT · title MANAGING MEMBER / MANAGING MEMBER, ONE ROCK CAPITAL PARTNERS GP, LLC / MANAGING MEMBER, ONE ROCK, INTERIM PARTNERS, LLC → MANAGING MEMBER / MANAGING MEMBER, ONE ROCK CAPITAL PARTNERS GP, LLC; ownership 50–75% → 10–25%
- ChangedLEE, TONY, WON · title MANAGING MEMBER, CHIEF COMPLIANCE OFFICER / MANAGING MEMBER, ONE ROCK INTERIM PARTNERS, LLC → MANAGING MEMBER, CHIEF COMPLIANCE OFFICER / MANAGING MEMBER, ONE ROCK CAPITAL PARTNERS GP, LLC / MANAGING MEMBER, ONE ROCK INTERIM PARTNERS, LLC
- ChangedMC CAPITAL, INC · title NON-MANAGING MEMBER → NON-MANAGING MEMBER / NON-MANAGING MEMBER, ONE ROCK CAPITAL PARTNERS GP, LLC
- ChangedSPIELVOGEL, ROBERT, SCOTT · title MANAGING MEMBER / MANAGING MEMBER, ONE ROCK, INTERIM PARTNERS, LLC → MANAGING MEMBER / MANAGING MEMBER, ONE ROCK CAPITAL PARTNERS GP, LLC / MANAGING MEMBER, ONE ROCK, INTERIM PARTNERS, LLC
- ListedLEE, TONY, WON · MANAGING MEMBER, CHIEF COMPLIANCE OFFICER / MANAGING MEMBER, ONE ROCK INTERIM PARTNERS, LLC · 50–75% · control person
- ListedMC CAPITAL, INC · NON-MANAGING MEMBER · 25–50% · control person
- ListedMITSUBISHI CORPORATION · PARENT, MC CAPITAL, INC. · 75% or more · indirect via MC CAPITAL, INC. · control person
- ListedSPIELVOGEL, ROBERT, SCOTT · MANAGING MEMBER / MANAGING MEMBER, ONE ROCK, INTERIM PARTNERS, LLC · 50–75% · 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.
One Rock Capital Partners, 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).
| # | Issuer | Symbol | CUSIP | Value | Weight | Shares | Type |
|---|---|---|---|---|---|---|---|
| 1 | PRIMO BRANDS CORPORATION | PRMB | 741623102 | $2.84B | 100.00% | 116,210,806 | SH |
| Period | Filed | AUM | Holdings | Accession |
|---|---|---|---|---|
| 2026-06-30 | 2026-08-14 | $2.84B | 1 | 0001193125-26-350364 |
| 2026-03-31 | 2026-05-15 | $2.19B | 1 | 0001193125-26-225305 |
| 2025-12-31 | 2026-02-17 | $1.90B | 1 | 0001193125-26-052925 |
NEW YORK, NY 10111