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Equibles

CITADEL ADVISORS LLC

Position in ASYS — Amtech Systems Inc

CIK 1423053 MIAMI, FL
Back to ASYS Full portfolio

Position in ASYS

as of Jun 30, 2026 · filed Sep 2, 2026
Position Value
$2,452,157
+$1,203,403 QoQ
Shares Held
106,246
-0.6% QoQ
Ownership
0.607%
of shares outstanding
% of Portfolio
0.00%
of 13F equity value
Holder Rank
#20
of 111 holders
Holding Since
Jun 2020
22 quarters on record
Voting authority Sole 100% Shared 0% None 0%

Common Shares in ASYS Over Time

Shares Held

Position Value (USD)

Derivatives in ASYS

reported options exposure · as of Jun 30, 2026
CallValue
$759,332
CallShares
32,900
PutValue
$295,424
PutShares
12,800

Notional value of option positions as reported on Form 13F. Calls and puts are disclosed separately and do not net against the common-share stake above.

Position in Semiconductor Equipment & Materials

Technology · as of Jun 30, 2026

CITADEL ADVISORS LLC holds $3,316,848,873 across 26 Semiconductor Equipment & Materials names. ASYS ranks #23 (0.1% of the industry book) .

# Ticker Company Shares Value (USD) Open
1 AMAT
Applied Materials Inc /De
 1,080,951 $781,527,573
2 KLAC
Kla Corp
 2,541,076 $766,668,039
3 LRCX
Lam Research Corp
 1,420,975 $615,751,095
4 ASML
Asml Holding NV
 188,358 $374,726,919
5 ONTO
Onto Innovation Inc.
 342,187 $129,500,670
6 AXTI
Axt Inc
 1,481,332 $106,774,410
7 Q
Qnity Electronics, Inc.
 613,148 $100,133,199
8 AMKR
Amkor Technology, Inc.
 1,028,138 $88,656,339

All Filings in ASYS

Export CSV
49 filing rows on record
Report Date Value (USD) Shares
2026-06-30 $759,332 32,900
2026-06-30 $295,424 12,800
2026-06-30 $2,452,157 106,246
2026-03-31 $1,248,754 106,914
2026-03-31 $266,304 22,800
2025-12-31 $1,566,779 124,843
2025-09-30 $726,484 78,454
2025-06-30 $81,252 18,300
2025-06-30 $168,249 37,894
2025-03-31 $5,313 1,100
2025-03-31 $214,480 44,406
2025-03-31 $90,804 18,800
2024-12-31 $11,990 2,200
2024-12-31 $219,395 40,256
2024-12-31 $22,345 4,100
2024-09-30 $245,316 42,296
2024-09-30 $9,280 1,600
2024-09-30 $23,780 4,100
2024-06-30 $204,150 34,838
2024-06-30 $6,446 1,100
2024-06-30 $1,758 300
2024-03-31 $359,305 66,415
2024-03-31 $16,771 3,100
2024-03-31 $80,068 14,800
2023-12-31 $31,500 7,500
2023-12-31 $10,920 2,600
2023-12-31 $194,279 46,257
2023-09-30 $21,336 2,800
2023-09-30 $21,336 2,800
2023-09-30 $89,870 11,794
2023-06-30 $62,140 6,500
2023-06-30 $355,573 37,194
2023-06-30 $10,516 1,100
2023-03-31 $428,202 44,885
2023-03-31 $43,884 4,600
2023-03-31 $37,206 3,900
2022-12-31 $42,560 5,600
2022-12-31 $209,129 27,517
2022-12-31 $149,720 19,700
2022-09-30 $167,645 19,723
2022-03-31 $137,822 13,700
2021-12-31 $143,260 14,500
2021-09-30 $222,427 19,460
2021-06-30 $362,464 37,600
2021-06-30 $104,112 10,800
2021-03-31 $588,636 49,800
2021-03-31 $219,852 18,600
2021-03-31 $259,011 21,913
2020-06-30 $49,537 10,172