13F Insight
DOSSIER · 13F-HR · Q3 2026

WOODSTOCK CORP

$1.2B in tracked AUM across 160 positions as of Q3 2026.

WC
CIK 0001008877 · last filed Sep 30, 2026
Total AUM
$1.2B
as of Q3 2026
Holdings
160
—
positions
Whale Score
67
67
tracked
Activity
—
no data
changes this Q
AI Analysis · Q3 2026
Comprehensive Analysis of SEC 13F Filing: WOODSTOCK CORP
1. Portfolio Overview

WOODSTOCK CORP has reported a substantial expansion in its investment portfolio for the quarter ending December 31, 2025. The total portfolio value surged by 117.7%, rising from $535.19 million to $1.17 billion. This dramatic increase in AUM (Assets Under Management) suggests significant capital inflows or a consolidation of reporting entities.

The portfolio demonstrates a high degree of diversifica...

2. Key Holdings

The portfolio is anchored by a "Magnificent Seven" tech bias, with NVIDIA Corp (NVDA) remaining the dominant position despite a slight reduction. NVDA represents 9.27% of the portfolio ($108.06M), maintaining its status as the largest single holding.

A notable shift occurred in the top ranks with the entrance of Microsoft (MSFT) and Apple (AAPL) as new positions, immediately securing the 2nd and 6th spots, respectively. MSFT accounts for 6.57% of the portfolio ($76.61M), and AAPL for 3.94% ($45.87M).

Analysis generated by 13F Insight from SEC Form 13F filing data · Q3 2026. Methodology

Quarter at a glance — Q3 2026

Position-change comparison pending.

No quarter-over-quarter changes available.

Top 10 holdings

By portfolio weight as of Q3 2026.

#HoldingValueSharesWeight
01
NVDA
NVIDIA Corp
$106M466K8.5%02
MSFT
Microsoft Corp
$82M160K6.6%03
AAPL
Apple Inc
$55M165K4.4%04
GOOG
Alphabet Inc Class C
$49M144K3.9%05
ORLY
O'Reilly Automotive Inc
$47M552K3.8%06
34959E109
Fortinet Inc
$40M223K3.2%07
GOOGL
Alphabet Inc Class A
$36M105K2.9%08
ISRG
Intuitive Surgical Inc
$34M85K2.8%09
RTX
Rtx Corporation Com
$27M143K2.1%10
ABBV
Abbvie Inc
$24M93K1.9%

Filing history

2026Q3Sep 30
$1.2B▲ 3.4%
160 positionsView →2026Q2Jun 30
$1.2B▲ 7.2%
163 positionsView →2026Q1Mar 31
$1.1B▼ 3.6%
156 positionsView →2025Q4Dec 31
$1.2B▲ 1.0%
156 positionsView →2025Q3Sep 30
$1.2B▲ 6.1%
157 positionsLocked2025Q2Jun 30
$1.1B▲ 7.5%
156 positionsLocked2025Q1Mar 31
$1.0B▼ 2.5%
153 positionsLocked2024Q4Dec 31
$1.0B▼ 0.1%
156 positionsLocked2024Q3Sep 30
$1.0B▲ 5.7%
165 positionsLocked2024Q2Jun 30
$983M▲ 1.8%
165 positionsLocked2024Q1Mar 31
$966M▲ 11.9%
165 positionsLocked2023Q4Dec 31
$864M▲ 8.3%
166 positionsLocked
Showing 12 of 83