MARK SHEPTOFF FINANCIAL PLANNING, LLC

Position in AMKR — Amkor Technology, Inc.

CIK 1607355 GLASTONBURY, CT

Position in AMKR

as of Jun 30, 2026 · filed Aug 13, 2026 Compact

Position Value

$8,623

+$4,120 QoQ

Shares Held

100

0.0% QoQ

Ownership

0.000%

of shares outstanding

% of Portfolio

0.01%

of 13F equity value

Holder Rank

#566

of 643 holders

Holding Since

Mar 2026

2 quarters on record

Voting authority Sole 100% Shared 0% None 0%

Technology · as of Jun 30, 2026

MARK SHEPTOFF FINANCIAL PLANNING, LLC holds $126,109 across 5 Semiconductor Equipment & Materials names. AMKR ranks #5 (6.8% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	AMAT	Applied Materials Inc /De	52	$37,596
2	VECO	Veeco Instruments Inc	400	$30,320
3	ACMR	ACM Research, Inc.	200	$25,378
4	TER	Teradyne, Inc	50	$24,192
5	AMKR	Amkor Technology, Inc. This page	100	$8,623

2 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-06-30	$8,623	100	0.0%	Shares	Sole	2026-08-13
2026-03-31	$4,503	100	—	Shares	Sole	2026-05-11
No filing history on record for this holder in this stock.