Attestor Capital Ltd

Fundamental concentrated ★Highest signal CIK 1830731
Long book
$379.5M
Q1 2026
Positions
8
Top-10 weight
100%
concentration
Last quarter
+15.4%
SPY +14.8%
Turnover
30%
of book per quarter

Strategy in plain words

auto-generated from filings

Attestor Capital Ltd is a concentrated fundamental stock-picker, running a $379.5M US long book across 8 positions.

The portfolio is extremely concentrated — the top 10 positions are almost the whole book. The portfolio is actively managed, with meaningful quarterly turnover. Current anchor positions: TALEN ENERGY CORP, ECHOSTAR CORP-A, GLOBAL BUSINESS TRAVEL GROUP, SEAGATE TECHNOLOGY HOLDINGS, WESTERN DIGITAL CORP.

We rate its filings highest-signal: new buys here are worth attention.

Implied long-book return vs S&P 500

methodology: positions priced quarterly, no shorts/options
Fund long book S&P 500
Q4 2025
-11.0%
Q1 2026
+15.4%

Sector allocation

Utilities
41%
Communications
37%
Industrials
14%
Other
4%
Technology
4%

Long book by quarter

$211.8M
Q4 2025
$379.5M
Q1 2026

What does Attestor Capital own?

Q1 2026 13F
CompanySectorSharesValue% of bookChange
TLN TALEN ENERGY CORPUtilities479.9K$153.2M40.4%+233.7%
ECHO ECHOSTAR CORP-ACommunications1.2M$136.0M35.8%+158.7%
GBTG GLOBAL BUSINESS TRAVEL GROUPIndustrials8.9M$48.6M12.8%Held
STXN SEAGATE TECHNOLOGY HOLDINGS39.2K$15.4M4.0%New
WDC WESTERN DIGITAL CORPTechnology52.9K$14.3M3.8%+139.8%
RXO RXO INCIndustrials285.6K$4.2M1.1%Held

13F filing history

PeriodFormFiledEntriesReported valueFlagsSource
Q1 202613F-HRApr 24, 20269$379.5M canonicalSEC ↗
Q4 202513F-HRFeb 20, 202610$211.8M canonicalSEC ↗