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

12 West Capital Management LP

$535M in tracked AUM across 18 positions as of Q2 2026.

1W
CIK 0001540531 · last filed Jun 30, 2026
Total AUM
$535M
as of Q2 2026
Holdings
18
—
positions
Whale Score
75
75
strong
Activity
—
no data
changes this Q
AI Analysis · Q2 2026
13F Filing Analysis: 12 West Capital Management LP
1. Portfolio Overview

The most striking feature of 12 West Capital Management’s Q3 2025 filing is the dramatic reduction in portfolio size. The total assets under management (AUM) plummeted by 48.2%, falling from $945.51 million to $489.82 million. This substantial decrease in capital base was accompanied by a shift in portfolio structure, with the number of holdings remaining concentrated at just 10 securities.

The firm ...

2. Key Holdings

GDS Holdings (GDS) remains the dominant position, despite a reduction in stake. It accounts for 35.73% of the portfolio ($175.00M). While the firm reduced the position by 7.0% (selling $26.29M worth of shares), it remains the anchor of the strategy. This suggests continued confidence in the data center infrastructure theme, likely driven by AI demand, even while taking some profits or managing portfolio risk.

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
GDS
GDS HLDGS LTD
$77M2.6M14.4%02
G0896C103
BBB FOODS INC
$72M1.7M13.4%03
RBLX
ROBLOX CORP
$52M950K9.7%04
SHAK
SHAKE SHACK INC
$48M863K9.0%05
MRVI
MARAVAI LIFESCIENCES HLDGS I
$44M7.1M8.2%06
RGEN
REPLIGEN CORP
$38M280K7.1%07
AFRM
AFFIRM HLDGS INC
$38M460K7.0%08
TOST
TOAST INC
$35M1.2M6.5%09
ACMR
ACM RESH INC
$29M225K5.3%10
HTFL
HEARTFLOW INC
$26M903K5.0%

Filing history

2026Q2Jun 30
$535M▼ 9.7%
18 positionsView →2026Q1Mar 31
$592M▼ 29.5%
20 positionsView →2025Q4Dec 31
$840M▲ 71.4%
18 positionsView →2025Q3Sep 30
$490M▼ 48.2%
10 positionsView →2025Q2Jun 30
$946M▲ 39.5%
17 positionsLocked2025Q1Mar 31
$678M▼ 29.0%
17 positionsLocked2024Q4Dec 31
$955M▼ 2.3%
16 positionsLocked2024Q3Sep 30
$977M▲ 0.5%
17 positionsLocked2024Q2Jun 30
$973M▼ 12.3%
19 positionsLocked2024Q1Mar 31
$1.1B▼ 1.4%
25 positionsLocked2023Q4Dec 31
$1.1B▲ 1.8%
20 positionsLocked2023Q3Sep 30
$1.1B▼ 5.2%
24 positionsLocked
Showing 12 of 52