NEW YORK, Jan 17, 2026, 21:08 EST — Market closed.
- Amkor shares closed lower yesterday, dragged down by news of an insider sale.
- U.S. stock markets remain closed Monday in observance of Martin Luther King Jr. Day; they reopen Tuesday.
- Focus now turns to the company’s upcoming earnings report and the guidance it will provide.
Amkor Technology (AMKR) slipped 2.4% on Friday, ending at $48, while the broader U.S. market stayed mostly flat. Despite the drop, the stock has gained roughly 25% in the last month. 1
A Form 144 filing revealed an insider’s intent to sell 5,000 Amkor shares. Though a modest amount, the move caught eyes following the stock’s recent surge. 2
Why it matters now: U.S. markets remain closed Monday for Martin Luther King Jr. Day, putting the spotlight on Tuesday for the next sentiment gauge. Nasdaq has Amkor’s earnings report scheduled for Feb. 9. 3
The filing revealed the shares came from a stock-option exercise, with Morgan Stanley Smith Barney set to manage the sale.
Rule 144 is the SEC’s guideline on how insiders and major shareholders can offload restricted or “control” shares. Though a filing doesn’t mean a sale has happened, traders frequently monitor these notices for clues on timing and volume.
Amkor, a leading outsourced chip packaging and testing firm, handles the crucial step where chips are enclosed and inspected before making their way into phones, cars, and servers. Demand shifts rapidly, and profits largely depend on how intensively its factories operate.
Investors are eyeing whether Friday’s dip will attract buyers or pave the way for a wider pullback following a strong month. With thin post-holiday trading, price swings often appear more significant than they really are.
The danger lies in the dip deepening if investors conclude expectations have outpaced near-term earnings. Any hint of weaker demand, falling prices, or rising costs from new capacity could squeeze margins further.
The earnings report is due around Feb. 9. Investors will be watching closely for updates on demand, utilization, and the company’s outlook for the rest of 2026.
