Markets Brief

Tuesday, July 21, 2026

Last updated 3:06 PM PT

Market Value

$201,258.33

Cost $239,993.08

Day's Gain

$16,035.83

8.66%

Total Gain

-$38,734.75

-16.14%

AI semis & memory

MU

Day's Gain $
$6,321.60
Day's Gain %
12.17%
Total Gain $
-$4,994.30
Total Gain %
-7.90%

Qty # 60 · Last Price $970.82 · Value $58,249.20 · Total Cost $63,243.50

AI memory is the trade: Micron is ripping because HBM demand is tight, pricing power is back, and AI capex keeps pulling supply through the chain. With the position still down despite today’s 12% pop, I would not chase; own it, don’t trade it, and add only on weakness while watching HBM margins and capex discipline.

AI buildout — fiber, storage, power

SNDK

Day's Gain $
$1,984.50
Day's Gain %
14.27%
Total Gain $
-$6,881.00
Total Gain %
-30.21%

Qty # 10 · Last Price $1,589.40 · Value $15,894.00 · Total Cost $22,775.00

Storage is back in the AI buildout trade: hyperscaler demand needs NAND capacity alongside HBM, CoWoS, optical, and grid power, and today's SNDK rip says the market is paying for that scarcity. I like staying long, but not chasing a 14% up day while the position is still down 30%; buy weakness in pieces and make management prove margins are expanding.

Other holdings

AMAT

Day's Gain $
$1,942.50
Day's Gain %
7.39%
Total Gain $
-$3,606.40
Total Gain %
-11.33%

Qty # 50 · Last Price $564.55 · Value $28,227.50 · Total Cost $31,833.90

Semis first: AMAT is ripping with the equipment cycle, but no fresh headline means I would not chase a 7% up day. Own the quality, buy weakness in pieces, and watch China controls and AI capex because that is where the thesis lives or breaks.

AMD

Day's Gain $
$817.20
Day's Gain %
8.11%
Total Gain $
-$653.00
Total Gain %
-5.66%

Qty # 20 · Last Price $544.43 · Value $10,888.60 · Total Cost $11,541.60

Semis are back in charge: AMD is ripping with Micron and Sandisk because AI capex is alive, but Alphabet’s Gemini-chip push says hyperscalers will keep squeezing accelerator margins. I’d trim the 8% rip in a losing Other-holdings bucket and rebuild only on weakness backed by MI-series demand, HBM supply, CoWoS access, and gross-margin proof.

BE

Day's Gain $
$876.00
Day's Gain %
14.82%
Total Gain $
-$3,172.20
Total Gain %
-31.85%

Qty # 30 · Last Price $226.26 · Value $6,787.80 · Total Cost $9,960.00

Clean power is the sector, and BE’s 15% rip is power-demand multiple expansion, not a company-news catalyst, because these Bloom headlines are unrelated noise. With the position still down 32%, I’d stay long only in disciplined size and demand real proof in orders, margins, and grid-power customer wins before calling this comeback investable.

GEV

Day's Gain $
-$9.25
Day's Gain %
-0.03%
Total Gain $
-$260.25
Total Gain %
-0.96%

Qty # 25 · Last Price $1,078.81 · Value $26,970.25 · Total Cost $27,230.50

Power equipment is still the secular winner, and GEV is about grid buildout, gas turbines, services margins, and electrification capex, not a flat tape. With no fresh news and the position down less than 1%, I stay long and buy weakness in pieces, because grid power is the constraint and this is an own it, don’t trade it name.

INTC

Day's Gain $
$1,258.50
Day's Gain %
8.64%
Total Gain $
-$4,045.99
Total Gain %
-20.37%

Qty # 150 · Last Price $105.45 · Value $15,817.50 · Total Cost $19,863.49

Chips are catching a bid, but Intel's data-center layoffs say the fundamental engine is still sputtering where margins and AI wallet-share matter most. At $105.45, up 8.64% today and still down 20.37% in the book, I’d trim strength and redeploy to cleaner AI silicon winners.

MRVL

Day's Gain $
$1,171.80
Day's Gain %
6.68%
Total Gain $
-$9,071.60
Total Gain %
-32.65%

Qty # 90 · Last Price $207.96 · Value $18,716.40 · Total Cost $27,788.00

Semis are leading today, and MRVL’s rally with Micron and Sandisk says the AI infrastructure trade is back on. Down 32.65% in the position, I would not chase a 6.68% pop; buy weakness in pieces and focus on margins, custom silicon, optical, and capacity.

SPCX

Day's Gain $
$7.38
Day's Gain %
3.08%
Total Gain $
-$172.73
Total Gain %
-41.14%

Qty # 2 · Last Price $123.54 · Value $247.08 · Total Cost $419.81

Space and defense is where the money is flowing, and Cathie Wood adding SpaceX says the speculative bid is back. SPCX is still a bruised position down 41%, so I’d buy weakness in pieces and focus on Pentagon demand, launch cadence, and margin leverage.

TSM

Day's Gain $
$446.20
Day's Gain %
5.55%
Total Gain $
-$1,035.80
Total Gain %
-10.87%

Qty # 20 · Last Price $424.61 · Value $8,492.20 · Total Cost $9,528.00

Semis are back in charge, and TSM is the tollbooth for AI: HBM packaging, CoWoS capacity, and leading-edge nodes are the margin story, not this one-day pop. Up 5.55% while the position is still down 10.87%, I’d buy weakness in pieces and stay long because the trade is on if AI capex keeps flowing through Taiwan Semi.

WDC

Day's Gain $
$1,219.40
Day's Gain %
12.51%
Total Gain $
-$4,841.48
Total Gain %
-30.62%

Qty # 20 · Last Price $548.39 · Value $10,967.80 · Total Cost $15,809.28

Semis are back in charge, and WDC is getting paid for AI infrastructure exposure instead of the old PC-storage drag. Do not chase a 12% gap; buy weakness in pieces and watch NAND pricing, cloud capex, and margin recovery.

Watchlist

BE

BLOOM ENERGY CORP COM CL A

$226.26 $29.20 (14.82%)

Clean power is the lane, but that BRTV headline has nothing to do with Bloom Energy, so the 15% rip needs confirmation from orders, margins, and data-center power demand. Watch backlog quality, service margins, and grid-power partnerships; chase only if fundamentals follow, otherwise let the stock come to you.

GLW

CORNING INC COM

$162.41 $9.31 (6.08%)

Industrial tech and optical infrastructure are in favor, and a 6% move with no fresh headline says the market is paying up for Corning’s fiber, display glass, and specialty materials leverage into AI data-center buildouts. I like watching it on pullbacks, but the tell is margins and optical orders, not the tape: if pricing and volume stick, the trade is on.

GOOGL

ALPHABET INC CAP STK CL A

$347.15 -$4.84 (-1.38%)

AI infrastructure is the story: if Alphabet runs Gemini cheaper on its own silicon, the margin setup improves and Nvidia dependency gets less painful. Watch capex, TPU supply, and cloud adoption; down 1.38% today does not break the setup.

IRDM

IRIDIUM COMMUNICATIONS INC COM

$47.24 $0.83 (1.79%)

Satellite communications is catching a bid, but with no fresh headlines the watch is service revenue, subscriber adds, ARPU, and whether capex/debt costs stop eating the story. At $47.24 after a 1.79% pop, I like the setup only if margins expand; otherwise the move is just noise, booyah.

LRCX

LAM RESEARCH CORP COM NEW

$322.00 $15.24 (4.97%)

Semi-cap equipment is the sector tell here, and that sports headline is noise, not Lam Research news. Watch memory capex, HBM-driven DRAM spending, China restrictions, and etch/deposition margins; at +5% I chase nothing, but I like the name on real order strength.

NVDA

NVIDIA CORPORATION COM

$207.29 $4.01 (1.97%)

NVDA is using balance-sheet power to lock down the AI cloud stack, and that keeps the sector story centered on GPUs, HBM, CoWoS, networking, and power. At $207.29 after a 1.97% pop, watch whether this cloud investment turns into durable capacity and margin leverage; I like the name on weakness, not into a headline chase.

PLTR

PALANTIR TECHNOLOGIES INC CL A

$132.66 -$2.19 (-1.62%)

Software AI is moving from token hype to enterprise workflow ROI, and Karp is leaning right into Palantir’s strongest lane: deployment, outcomes, and mission-critical data plumbing. Down 1.62% at $132.66 does not change the setup, but this watchlist name has to prove AIP growth, margin leverage, and commercial customer expansion can outrun a very rich multiple.

PWR

QUANTA SVCS INC COM

$639.20 $6.64 (1.05%)

Grid power is the story: PWR is a pick-and-shovel name for utility hardening, data-center load, and transmission capex, so watch backlog, margins, and labor execution. With no fresh headlines and just a 1.05% move, the setup does not change; I like this name on weakness, not after a chase.

Q

QNITY ELECTRONICS INC COMMON STOCK

$138.78 $4.20 (3.12%)

No fresh headline fuel, so this is tape-driven strength and I’d watch whether $Q can hold the move without a sector catalyst. The setup is simple: let the next company-specific news prove the margins or growth story before chasing a 3% pop.

RDDT

REDDIT INC CL A

$185.84 $4.20 (2.31%)

Internet ads first: RDDT's move is tech-beta noise until ad load, pricing, and user growth say otherwise. I like the setup on pullbacks, because the real swing factors are ad margins and AI data licensing, not a one-day tape wobble.

SIMO

SILICON MOTION TECHNOLOGY CORP SPONSORED ADR

$278.17 $25.56 (10.12%)

This tape is crossed: the headline is Tesla, not SIMO, so I do not treat the 10% pop as validated SIMO news. For SIMO, watch NAND controller demand, gross margins, and mobile customer concentration; I like this name only if the memory cycle is firming.