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JANE STREET GROUP, LLC

Position in ASYS — Amtech Systems Inc

CIK 1595888 NEW YORK, NY

Position in ASYS

as of Jun 30, 2026 · filed Aug 14, 2026
Position Value
$5,757,652
+$1,776,186 QoQ
Shares Held
249,465
-26.8% QoQ
Ownership
1.42%
of shares outstanding
% of Portfolio
0.00%
of 13F equity value
Holder Rank
#14
of 111 holders
Holding Since
Sep 2025
4 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
$1,915,640
CallShares
83,000
PutValue
$516,992
PutShares
22,400

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

JANE STREET GROUP, LLC holds $2,249,113,515 across 23 Semiconductor Equipment & Materials names. ASYS ranks #15 (0.3% of the industry book) .

# Ticker Company Shares Value (USD) Open

All Filings in ASYS

Export CSV
6 filing rows on record
Report Date Value (USD) Shares
2026-06-30 $1,915,640 83,000
2026-06-30 $5,757,652 249,465
2026-06-30 $516,992 22,400
2026-03-31 $3,981,466 340,879
2025-12-31 $4,088,212 325,754
2025-09-30 $1,624,406 175,422