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Equibles

GAMMA Investing LLC

Position in ATEYY — Advantest Corp

CIK 2010235 FOSTER CITY, CA
Back to ATEYY Full portfolio

Position in ATEYY

as of Sep 30, 2026 · filed Oct 8, 2026
Position Value
$1,378,828
+$196,215 QoQ
Shares Held
6,243
+9.8% QoQ
Ownership
0.001%
of shares outstanding
% of Portfolio
0.05%
of 13F equity value
Holder Rank
#1
of 2 holders
Holding Since
Dec 2023
12 quarters on record
Voting authority Sole 100% Shared 0% None 0%

Common Shares in ATEYY Over Time

Shares Held

Position Value (USD)

Position in Semiconductor Equipment & Materials

Technology · as of Sep 30, 2026

GAMMA Investing LLC holds $54,472,507 across 28 Semiconductor Equipment & Materials names. ATEYY ranks #7 (2.5% of the industry book) .

# Ticker Company Shares Value (USD) Open
1 LRCX
Lam Research Corp
 43,060 $14,145,640
2 AMAT
Applied Materials Inc /De
 25,923 $13,256,503
3 KLAC
Kla Corp
 40,495 $7,893,690
4 ASML
Asml Holding NV
 3,881 $7,031,091
5 TER
Teradyne, Inc
 7,449 $2,986,378
6 ENTG
Entegris Inc
 9,191 $1,415,965
7 ATEYY
Advantest Corp
This page 		6,243 $1,378,828
8 Q
Qnity Electronics, Inc.
 9,147 $1,150,143

All Filings in ATEYY

Export CSV
12 filing rows on record
Report Date Value (USD) Shares
2026-09-30 $1,378,828 6,243
2026-06-30 $1,182,613 5,684
2026-03-31 $736,905 5,426
2025-12-31 $639,735 5,064
2025-09-30 $471,948 4,696
2025-06-30 $316,696 4,282
2025-03-31 $234,242 5,308
2024-12-31 $285,360 5,016
2024-09-30 $180,081 3,804
2024-06-30 $103,133 2,534
2024-03-31 $145,821 3,271
2023-12-31 $88,830 2,632