CORNERSTONE PARTNERS CAPITAL MANAGEMENT, LLC

Wealth advisor Mechanical technology specialist (71%) CIK 1845620
Long book
$40.3M
Q1 2026
Positions
7
Top-10 weight
100%
concentration
Last quarter
-1.5%
SPY +14.8%
Turnover
25%
of book per quarter

Strategy in plain words

auto-generated from filings

CORNERSTONE PARTNERS CAPITAL MANAGEMENT, LLC is a wealth-management firm allocating client money, specialised in technology (71% of the long book), running a $40.3M US long book across 7 positions.

The portfolio is extremely concentrated — the top 10 positions are almost the whole book. Turnover is modest: positions are typically held for years. Current anchor positions: STATE STREET SPDR S&P GLOBAL, ISHARES CORE US REIT ETF, ISHARES CORE S&P 500 ETF, ISHARES CORE MSCI EAFE ETF, ISHARES CORE MSCI EMERGING.

Over the last 9 quarters its long book ran on average 0.7pp per quarter behind the S&P 500, beating the index in 5 of 9 quarters. Its holdings are mechanical (indexing / client flows), so position changes carry no stock-picking signal.

Implied long-book return vs S&P 500

methodology: positions priced quarterly, no shorts/options
Fund long book S&P 500
Q1 2024
+3.2%
Q2 2024
+6.6%
Q3 2024
-6.3%
Q4 2024
+2.4%
Q1 2025
+3.7%
Q2 2025
+8.5%
Q3 2025
+4.2%
Q4 2025
+13.1%
Q1 2026
-1.5%

Sector allocation

Technology
71%
Healthcare
29%

Long book by quarter

$1.49B
Q1 2024
$176.1M
Q2 2024
$50.8M
Q3 2024
$46.7M
Q4 2024
$48.0M
Q1 2025
$33.4M
Q2 2025
$34.5M
Q3 2025
$36.3M
Q4 2025
$40.3M
Q1 2026

What does CORNERSTONE PARTNERS own?

Q1 2026 13F
CompanySectorSharesValue% of bookChange
AMPX AMPRIUS TECHNOLOGIES INCTechnology30.7K$518K1.3%Held
RYTM RHYTHM PHARMACEUTICALS INCHealthcare2.5K$214K0.5%New

13F filing history

PeriodFormFiledEntriesReported valueFlagsSource
Q1 202613F-HRApr 24, 20267$40.3M canonicalSEC ↗
Q4 202513F-HRJan 22, 20267$36.3M canonicalSEC ↗
Q3 202513F-HROct 17, 20256$34.5M canonicalSEC ↗
Q2 202513F-HRJul 22, 20256$33.4M canonicalSEC ↗
Q1 202513F-HRApr 22, 20259$48.0M canonicalSEC ↗
Q4 202413F-HRJan 27, 20258$46.7M canonicalSEC ↗
Q3 202413F-HROct 21, 20248$50.8M canonicalSEC ↗
Q2 202413F-HRJul 24, 20248$176.1M canonicalSEC ↗
Q1 202413F-HRMay 15, 20249$1.49B canonicalSEC ↗