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

S.A. Mason LLC

$341M in tracked AUM across 284 positions as of Q3 2026.

SM
CIK 0001800911 · last filed Sep 30, 2026
Total AUM
$341M
as of Q3 2026
Holdings
284
—
positions
Whale Score
48
48
tracked
Activity
—
no data
changes this Q
AI Analysis · Q3 2026

S.A. Mason LLC filed its latest 13F-HR for Q3 2026. See the latest holdings and position changes below.

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
$19M82K5.5%02
VSDM
Vanguard Short Duration Tax-Exm Bd ETF
$13M180K3.9%03
VOO
Vanguard S&P 500 ETF
$12M18K3.6%04
VTI
Vanguard Total Stock Market ETF
$12M31K3.5%05
IVV
iShares Core S&P 500 ETF
$10M14K3.0%06
VTES
Vanguard Short-Term Tax-Exmpt Bd ETF
$10M101K2.9%07
MSFT
Microsoft Corp
$9M17K2.5%08
VO
Vanguard Mid-Cap ETF
$8M98K2.3%09
AAPL
Apple Inc
$8M23K2.3%10
VB
Vanguard Small-Cap ETF
$8M27K2.2%

Filing history

2026Q3Sep 30
$341M▲ 4.6%
284 positionsView →2026Q2Jun 30
$326M▲ 22.2%
282 positionsView →2026Q1Mar 31
$266M▲ 5.3%
266 positionsView →2025Q4Dec 31
$253M▲ 11.6%
260 positionsView →2025Q3Sep 30
$227M▲ 9.6%
256 positionsLocked2025Q2Jun 30
$207M▲ 9.2%
362 positionsLocked2025Q1Mar 31
$189M▼ 0.6%
348 positionsLocked2024Q4Dec 31
$190M▲ 0.9%
342 positionsLocked2024Q3Sep 30
$189M▲ 7.3%
324 positionsLocked2024Q2Jun 30
$176M▲ 5.7%
319 positionsLocked2024Q1Mar 31
$166M▲ 11.6%
314 positionsLocked2023Q4Dec 31
$149M▲ 7.5%
316 positionsLocked
Showing 12 of 28