13F Insight
DOSSIER · 13F-HR · Q2 2026

RDST Capital LLC

$1.2B in tracked AUM across 18 positions as of Q2 2026.

RC
CIK 0001912187 · last filed Jun 30, 2026
Total AUM
$1.2B
as of Q2 2026
Holdings
18
—
positions
Whale Score
74
74
strong
Activity
—
no data
changes this Q
AI Analysis · Q2 2026
Comprehensive Analysis of RDST Capital LLC SEC 13F Filing
1. Portfolio Overview

RDST Capital LLC executed a drastic portfolio restructuring during the quarter ending September 30, 2025. The firm reduced its total assets under management (AUM) reported via 13F by 60.1%, contracting from approximately $1.00 billion to $399.47 million. This reduction was not merely a result of market valuation losses but was driven by significant active selling and position liquidation. The fund sold out of 1...

2. Key Holdings

The current portfolio is dominated by high-growth and financial technology names, with the largest position being Entegris Inc (ENTG) at $88.46 million (22.15% of the portfolio). Despite a minor reduction of shares (-13.2%), Entegris remains the cornerstone holding, suggesting a continued bullish outlook on the semiconductor materials supply chain.

Blue Owl Capital Inc (OWL) is the second-largest holding at $76.03 million (19.03%). The firm increased this stake by 32.8%, adding $11.08 million, indicating strong conviction in the alternative asset management space. Datadog Inc (DDOG) follows closely at $67.65 million (16.94%), representing the fund's primary pure-play cloud monitoring exposure.

Analysis generated by 13F Insight from SEC Form 13F filing data · Q2 2026. Methodology

Quarter at a glance — Q2 2026

Position-change comparison pending.

No quarter-over-quarter changes available.

Top 10 holdings

By portfolio weight as of Q2 2026.

#HoldingValueSharesWeight
01
G4253H101
JAMES HARDIE INDS PLC
$105M4.0M8.7%02
TSM
TAIWAN SEMICONDUCTOR MANUFAC
$97M204K8.1%03
MLM
MARTIN MARIETTA MATLS INC
$94M164K7.8%04
UNP
UNION PAC CORP
$89M328K7.4%05
ARES
ARES MANAGEMENT CORPORATION
$88M791K7.3%06
AMZN
AMAZON COM INC
$83M347K6.9%07
FND
FLOOR & DECOR HLDGS INC
$80M1.3M6.6%08
META
META PLATFORMS INC
$79M141K6.6%09
DASH
DOORDASH INC
$71M385K5.9%10
CPNG
COUPANG INC
$70M4.0M5.8%

Filing history

2026Q2Jun 30
$1.2B▲ 16.3%
18 positionsView →2026Q1Mar 31
$1.0B▼ 2.2%
20 positionsView →2025Q4Dec 31
$1.1B▼ 0.1%
19 positionsView →2025Q3Sep 30
$1.1B▲ 6.1%
19 positionsView →2025Q2Jun 30
$1.0B▲ 42.3%
18 positionsLocked2025Q1Mar 31
$703M▼ 0.2%
16 positionsLocked2024Q4Dec 31
$705M▲ 59.1%
20 positionsLocked2024Q3Sep 30
$443M▲ 16.6%
16 positionsLocked2024Q2Jun 30
$380M▼ 5.5%
17 positionsLocked2024Q1Mar 31
$402M▲ 28.2%
18 positionsLocked2023Q4Dec 31
$314M▲ 18.6%
18 positionsLocked2023Q3Sep 30
$265M▲ 8.8%
16 positionsLocked
Showing 12 of 19