Markets Brief

Thursday, September 17, 2026

Last updated 3:03 PM PT

Market Value

$65,454.25

Cost $61,395.15

Day's Gain

$2,963.85

4.74%

Total Gain

$4,059.10

6.61%

AI semis & memory

MU

Day's Gain $
$1,273.75
Day's Gain %
5.50%
Total Gain $
$801.90
Total Gain %
3.39%

Qty # 25 · Last Price $977.50 · Value $24,437.50 · Total Cost $23,635.60

AI memory remains the sweet spot because HBM demand and tight advanced-packaging supply support pricing, margins, and Micron’s earnings power. After a 5.5% surge, don’t chase it—stay long, buy weakness in pieces, and own it, don’t trade it.

AI buildout — fiber, storage, power

Other holdings

TSLA

Day's Gain $
$243.60
Day's Gain %
2.27%
Total Gain $
$1,037.00
Total Gain %
10.42%

Qty # 30 · Last Price $366.20 · Value $10,986.00 · Total Cost $9,949.00

TSLA’s 25.5% revenue growth and PG&E grid deal prove energy storage deserves more credit while Optimus and robotaxi remain expensive optionality. The stock is priced for perfection at $366, so stay long but trim strength—own it, don’t chase it.

Watchlist

AVGO

BROADCOM INC COM

$347.30 $7.79 (2.29%)

Broadcom is the king of the custom silicon and networking stack, and the AI infrastructure buildout makes this a must-own cornerstone for any data center play. Watch the HBM and CoWoS supply chain closely because any easing in those bottlenecks sends this name to the moon.

GLW

CORNING INC COM

$147.80 $3.64 (2.52%)

GLW’s rebound says the dilution scare is fading, but that $2 billion equity overhang still has to fund growth without crushing per-share returns. Watch optical-connectivity demand and margin expansion—if those accelerate, I like this name on weakness, not after a 2.5% pop.

GOOGL

ALPHABET INC CAP STK CL A

$347.33 $4.46 (1.30%)

Big Tech AI is still the trade, but watch whether Alphabet converts heavy capex into faster Cloud growth and durable margins. A 1.3% move changes nothing—I like this name on weakness, with $400 requiring earnings delivery rather than price-target hype.

IRDM

IRIDIUM COMMUNICATIONS INC COM

$47.48 $0.20 (0.42%)

The officer sale and planned follow-on selling are a sentiment overhang, not a broken satellite-connectivity thesis. Watch the next filing and operating momentum; at $47.48, I’d wait for weakness before getting interested—no chasing, booyah.

LITE

LUMENTUM HLDGS INC COM

$893.61 -$25.79 (-2.81%)

Lumentum is a pure-play on optical networking demand, but you have to watch their margins as they fight for share in the congested data center interconnect space. I'd keep this one on the watchlist until we see consistent evidence that their next-gen transceivers are winning the battle for CoWoS integration.

LRCX

LAM RESEARCH CORP COM NEW

$269.31 $0.08 (0.03%)

The semiconductor-equipment selloff is the story, and Lam’s flat close after a 7.1% premarket plunge shows buyers absorbed the panic. Watch whether $277 becomes resistance; I like this name on sector-driven weakness, but buy only after the equipment group stabilizes.

PLTR

PALANTIR TECHNOLOGIES INC CL A

$176.24 $1.90 (1.09%)

The 1.09% move changes nothing—this headline offers no fresh catalyst, so watch commercial growth, margin expansion, and customer concentration. PLTR remains a premium-priced AI software name; I like the business, but only buy real weakness in pieces.

PWR

QUANTA SVCS INC COM

$616.54 -$2.74 (-0.44%)

PWR is the grid-capex king, but at $616.54 the valuation leaves little room for execution misses or project-margin pressure. Watch backlog growth and margins; I like this name only on meaningful weakness, not after a modest pullback.