13F Insight
DOSSIER · 13F-HR · Q1 2026

Senator Investment Group LP

$2.5B in tracked AUM across 60 positions as of Q1 2026.

SI
CIK 0001443689 · last filed Mar 31, 2026
Total AUM
$2.5B
as of Q1 2026
Holdings
60
—
positions
Whale Score
60
60
tracked
Activity
—
no data
changes this Q
AI Analysis · Q1 2026
Comprehensive Analysis of Senator Investment Group LP SEC 13F Filing
Portfolio Overview

Senator Investment Group LP reported a significant portfolio restructuring for the period ending September 30, 2025. The total portfolio value decreased sharply by 48.0%, dropping from $2.59 billion to $1.35 billion. This drastic reduction in assets under management (AUM) is not solely attributable to market performance but indicates a substantial capital return program to investors, a major shift in ri...

The fund consolidated its positions, reducing the number of holdings and executing a high-turnover strategy. The "Activity Summary" reveals a rotation of 51 positions (11 new, 24 sold, 16 reduced, and 7 increased), signaling an active management style. The portfolio is currently concentrated in the top 10 positions, which account for approximately 58% of the total value, suggesting a conviction-based approach rather than broad indexing.

Key Holdings

The portfolio is anchored by a mix of high-growth technology, financial services, and digital assets, with the top position being the iShares Bitcoin Trust (IBIT) at $116.87 million (8.68%). This indicates a strategic allocation toward cryptocurrency as an alternative asset class.

Quarter at a glance — Q1 2026

Position-change comparison pending.

No quarter-over-quarter changes available.

Top 10 holdings

By portfolio weight as of Q1 2026.

#HoldingValueSharesWeight
01
NVDA
NVIDIA CORPORATION
$144M825K6.6%02
UAL
UNITED AIRLS HLDGS INC
$132M1.4M6.0%03
AMZN
AMAZON COM INC
$127M610K5.8%04
MSFT
MICROSOFT CORP
$99M268K4.5%05
TSM
TAIWAN SEMICONDUCTOR MANUFAC
$89M263K4.1%06
BA
BOEING CO
$88M441K4.0%07
WBD
WARNER BROS DISCOVERY INC
$84M3.0M3.8%08
DHR
DANAHER CORP DEL
$82M433K3.8%09
WWD
WOODWARD INC
$81M227K3.7%10
V
VISA INC
$77M255K3.5%

Filing history

2026Q1Mar 31
$2.2B▼ 12.7%
65 positionsView →2025Q4Dec 31
$2.5B▲ 85.2%
60 positionsView →2025Q3Sep 30
$1.3B▼ 48.0%
39 positionsView →2025Q2Jun 30
$2.6B▲ 37.5%
55 positionsLocked2025Q1Mar 31
$1.9B▼ 44.7%
51 positionsLocked2024Q4Dec 31
$3.4B▲ 61.8%
69 positionsLocked2024Q3Sep 30
$2.1B▲ 2.7%
63 positionsLocked2024Q2Jun 30
$2.1B▼ 6.7%
71 positionsLocked2024Q1Mar 31
$2.2B▼ 5.9%
69 positionsLocked2023Q4Dec 31
$2.3B▲ 31.1%
70 positionsLocked2023Q3Sep 30
$1.8B▼ 19.7%
55 positionsLocked2023Q2Jun 30
$2.2B▲ 21.1%
54 positionsLocked
Showing 12 of 61