Attestor Capital Ltd — 13F Holdings & Portfolio
CIK 1830731 · latest 13F-HR filed 2026-08-04
Attestor Capital Ltd manages $350.1M 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 TLN (62.54%), ECHO (29.98%), AMZN (3.29%). Quarter over quarter (versus its 2026-03-31 filing) the fund opened 1 new position and exited 5; 2 existing positions rose in reported value and 1 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 19, 2026.
| Name | Title / Status | Ownership | Type |
|---|---|---|---|
| ATTESTOR SERVICES LIMITED Control | SHAREHOLDER since Apr 2020 | 75% or more | Foreign Entity |
| Alhadeff, David Control | DIRECTOR since Sep 2022 | Less than 5% | Individual |
| Andreae, Friedrich, Stephan Control | DIRECTOR since Nov 2024 | Less than 5% | Individual |
| Guth, Christopher Control | DIRECTOR since Sep 2022 | Less than 5% | Individual |
| PETERS, JAN-CHRISTOPH Control | DIRECTOR since Jul 2019 | Less than 5% | Individual |
| ATTESTOR CAPITAL LIMITED Control Indirect owner via ATTESTOR SERVICES LIMITED | SHAREHOLDER since Dec 2011 | 75% or more | Foreign Entity |
| PETERS, JAN-CHRISTOPH Control Indirect owner via ATTESTOR CAPITAL LIMITED | SHAREHOLDER since Dec 2011 | 75% or more | Individual |
Ownership & leadership changes · 4 filings with changes since Mar 30, 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.
- AddedAndreae, Friedrich, Stephan · DIRECTOR · Less than 5% · control person
- AddedAlhadeff, David · DIRECTOR · Less than 5% · control person
- AddedGuth, Christopher · DIRECTOR · Less than 5% · control person
- No longer listedATTESTOR CAPITAL LLP · SHAREHOLDER · 75% or more · control person · listed since Jul 2019
- Listed againATTESTOR SERVICES LIMITED · SHAREHOLDER · 75% or more · control person
- No longer listedATTESTOR SERVICES LIMITED · CORPORATE PARTNER · 75% or more · control person · listed since Dec 2011
- No longer listedHEYDENREICH, ANKE, CHRISTINA · PARTNER · Less than 5% · control person · listed since Dec 2011
- No longer listedHEYDENREICH, ANKE, CHRISTINA · SHAREHOLDER · 25–50% · indirect via ATTESTOR CAPITAL LIMITED · control person · listed since Dec 2011
- AddedATTESTOR CAPITAL LLP · SHAREHOLDER · 75% or more · control person
- ChangedPETERS, JAN-CHRISTOPH · title PARTNER → DIRECTOR; ownership 5–10% → Less than 5%
- ListedATTESTOR CAPITAL LIMITED · SHAREHOLDER · 75% or more · indirect via ATTESTOR SERVICES LIMITED · control person
- ListedATTESTOR SERVICES LIMITED · CORPORATE PARTNER · 75% or more · control person
- ListedHEYDENREICH, ANKE, CHRISTINA · PARTNER · Less than 5% · control person
- ListedHEYDENREICH, ANKE, CHRISTINA · SHAREHOLDER · 25–50% · indirect via ATTESTOR CAPITAL LIMITED · control person
- ListedPETERS, JAN-CHRISTOPH · PARTNER · 5–10% · control person
- ListedPETERS, JAN-CHRISTOPH · SHAREHOLDER · 75% or more · indirect via ATTESTOR CAPITAL LIMITED · 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
- GLOBAL BUSINESS TRAVEL GROUP$48.6M
- SEAGATE TECHNOLOGY HLDNGS PL$15.4M
- WESTERN DIGITAL CORP$14.3M
- VANGUARD INDEX FDS$4.9M
- INVESCO QQQ TR$3.0M
Attestor Capital 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 | TALEN ENERGY CORP | TLN | 87422Q109 | $219.0M | 62.54% | 569,832 | SH |
| 2 | ECHOSTAR CORP | ECHO | 278768106 | $105.0M | 29.98% | 1,034,294 | SH |
| 3 | AMAZON COM INC | AMZN | 023135106 | $11.5M | 3.29% | 48,300 | SH |
| 4 | RXO INC | RXO | 74982T103 | $7.9M | 2.25% | 285,600 | SH |
| 5 | TALEN ENERGY CORP | TLN | 87422Q109 | $6.8M | 1.94% | 17,638 | SH |
| Period | Filed | AUM | Holdings | Accession |
|---|---|---|---|---|
| 2026-06-30 | 2026-08-04 | $350.1M | 5 | 0000947871-26-000741 |
| 2026-03-31 | 2026-04-24 | $379.5M | 9 | 0000947871-26-000465 |
| 2025-12-31 | 2026-02-20 | $211.8M | 10 | 0000947871-26-000198 |
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