CDAM (UK) Ltd — 13F Holdings & Portfolio
CIK 1719387 · latest 13F-HR filed 2026-08-13
CDAM (UK) Ltd manages $387.4M in 13F-reported U.S. long-equity assets across 12 reported positions as of its 2026-06-30 13F-HR filing. Its largest disclosed positions are CNM (12.68%), LGIH (11.93%), NOW (10.13%). 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 8 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 2026-08-13
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 = 93.2%Cumulative share of the portfolio held in the largest N positions.
As of the firm’s regulatory filing dated Jun 25, 2026.
20-22 QUEEN STREET
LONDON W1J 5PR
United Kingdom
| Name | Title / Status | Ownership | Type |
|---|---|---|---|
| CHAMBERLAIN, ADAM Control | DIRECTOR, CEO since Oct 2013 | 25–50% | Individual |
| CHAMBERLAIN, GEORGE, ALBERT Control | COO, CCO since Apr 2015 | Less than 5% | Individual |
| DAVIES, SCOTT, JOHN Control | DIRECTOR, CIO since Oct 2013 | 25–50% | Individual |
| CHAMBERLAIN, SALLY, MARY | SHAREHOLDER since Mar 2020 | Less than 5% | Individual |
| CHAMBERLAIN, SAMUEL, JAMES | SHAREHOLDER since Mar 2020 | Less than 5% | Individual |
| CHAMBERLAIN, SERENA, ROSE | SHAREHOLDER since Mar 2020 | Less than 5% | Individual |
| CHMURA, MACIEJ | PM since Jun 2015 | Less than 5% | Individual |
| Jahanchahi, Eric, Cyrus | PM since Apr 2024 | Less than 5% | Individual |
| LAMANNA, ROSARIA | SHAREHOLDER since Mar 2020 | 10–25% | Individual |
| LEVY, DOMINIQUE | DIRECTOR, NON-EXEC CHAIR since Jan 2023 | Less than 5% | Individual |
Ownership & leadership changes · 9 filings with changes since Dec 4, 2013
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.
- AddedJahanchahi, Eric, Cyrus · PM · Less than 5%
- No longer listedRUSSELL, WILLIAM, ANTHONY BOWATER · DIRECTOR, NON-EXEC CHAIR · Less than 5% · listed since Sep 2014
- AddedLEVY, DOMINIQUE · DIRECTOR, NON-EXEC CHAIR · Less than 5%
- AddedCHAMBERLAIN, SALLY, MARY · SHAREHOLDER · Less than 5%
- AddedCHAMBERLAIN, SAMUEL, JAMES · SHAREHOLDER · Less than 5%
- AddedCHAMBERLAIN, SERENA, ROSE · SHAREHOLDER · Less than 5%
- AddedCHMURA, MACIEJ · PM · Less than 5%
- AddedLAMANNA, ROSARIA · SHAREHOLDER · 10–25%
- AddedRUSSELL, WILLIAM, ANTHONY BOWATER · DIRECTOR, NON-EXEC CHAIR · Less than 5%
- ChangedCHAMBERLAIN, GEORGE, ALBERT · title COO → COO, CCO
- ChangedCHAMBERLAIN, ADAM · ownership 50–75% → 25–50%
- ChangedDAVIES, SCOTT, JOHN · ownership 50–75% → 25–50%
- AddedCHAMBERLAIN, GEORGE, ALBERT · COO · Less than 5% · control person
- ChangedCHAMBERLAIN, ADAM · title DIRECTOR, CCO → DIRECTOR, CEO
- ChangedCHAMBERLAIN, ADAM · title DIRECTOR → DIRECTOR, CCO
- ChangedDAVIES, SCOTT, JOHN · title DIRECTOR → DIRECTOR, CIO
- ChangedCHAMBERLAIN, ADAM · title MEMBER → DIRECTOR
- ChangedDAVIES, SCOTT, JOHN · title MEMBER → DIRECTOR
- ListedCHAMBERLAIN, ADAM · MEMBER · 50–75% · control person
- ListedDAVIES, SCOTT, JOHN · MEMBER · 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.
Top Trims
- CRH PLC-$32.5M -53.3%
- COLLIERS INTL GROUP INC-$15.4M -29.3%
- CORE & MAIN INC-$13.3M -21.3%
- QUALYS INC-$11.0M -26.6%
- VEEVA SYS INC-$8.7M -18.8%
CDAM (UK) Ltd 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 | CORE & MAIN INC | CNM | 21874C102 | $49.1M | 12.68% | 1,017,772 | SH |
| 2 | LGI HOMES INC | LGIH | 50187T106 | $46.2M | 11.93% | 725,470 | SH |
| 3 | SERVICENOW INC | NOW | 81762P102 | $39.3M | 10.13% | 395,457 | SH |
| 4 | VEEVA SYS INC | VEEV | 922475108 | $37.8M | 9.77% | 213,248 | SH |
| 5 | COLLIERS INTL GROUP INC | CIGI | 194693107 | $37.2M | 9.60% | 396,422 | SH |
| 6 | TFI INTERNATIONAL INC | TFII | 87241L109 | $36.5M | 9.43% | 254,560 | SH |
| 7 | EQUIFAX INC | EFX | 294429105 | $32.6M | 8.41% | 205,288 | SH |
| 8 | QUALYS INC | QLYS | 74758T303 | $30.2M | 7.80% | 219,862 | SH |
| 9 | CRH PLC | CRH | G25508105 | $28.4M | 7.34% | 265,665 | SH |
| 10 | ZIFF DAVIS INC | ZD | 48123V102 | $23.7M | 6.13% | 453,502 | SH |
| 11 | THERMO FISHER SCIENTIFIC INC | TMO | 883556102 | $19.5M | 5.04% | 38,960 | SH |
| 12 | ENDAVA PLC | DAVA | 29260V105 | $6.7M | 1.73% | 2,374,626 | SH |
| Period | Filed | AUM | Holdings | Accession |
|---|---|---|---|---|
| 2026-06-30 | 2026-08-13 | $387.4M | 12 | 0001719387-26-000004 |
| 2026-03-31 | 2026-05-14 | $450.9M | 11 | 0001719387-26-000003 |
| 2025-12-31 | 2026-02-13 | $549.9M | 11 | 0001719387-26-000002 |
| 2025-09-30 | 2025-11-13 | $554.4M | 11 | 0001719387-25-000010 |
20-22 QUEEN STREET
LONDON, X0 W1J 5PR