Markets Brief

Tuesday, June 30, 2026

Last updated 5:06 AM PT

Market Value

$211,649.43

Cost $212,540.98

Day's Gain

-$427.20

-0.20%

Total Gain

-$891.55

-0.42%

AI semis & memory

MU

Day's Gain $
$0.00
Day's Gain %
0.00%
Total Gain $
$5,473.30
Total Gain %
8.65%

Qty # 60 · Last Price $1,145.28 · Value $68,716.80 · Total Cost $63,243.50

AI memory is the hottest lane in semis, and Micron’s blowout quarter says HBM demand, pricing power, and data-center capex are still working. At +8.65%, I’d stay long but buy only on weakness because SK Hynix and Samsung make this a knife fight for the $500 billion memory prize.

AI buildout — fiber, storage, power

SNDK

Day's Gain $
$0.00
Day's Gain %
0.00%
Total Gain $
-$2,271.10
Total Gain %
-9.97%

Qty # 10 · Last Price $2,050.39 · Value $20,503.90 · Total Cost $22,775.00

The AI storage leg is the trade: Sandisk’s 781% run says memory pricing, enterprise SSD demand, and data-center capex are carrying the fundamentals. At a 10% position drawdown, I do not chase; buy weakness in pieces, demand margin follow-through, and own the AI capacity theme.

Other holdings

AMAT

Day's Gain $
-$427.20
Day's Gain %
-1.22%
Total Gain $
$2,898.10
Total Gain %
9.10%

Qty # 50 · Last Price $694.64 · Value $34,732.00 · Total Cost $31,833.90

AMAT is a semiconductor equipment holding, and with no fresh headlines the call is about capex discipline and AI supply-chain durability, not noise. Stay long, but I’d buy weakness in pieces because margins and backlog matter more here than one red day.

GEV

Day's Gain $
$0.00
Day's Gain %
0.00%
Total Gain $
$649.65
Total Gain %
4.09%

Qty # 15 · Last Price $1,102.51 · Value $16,537.65 · Total Cost $15,888.00

Power equipment is still the right sector: grid demand, gas turbine backlog, and electrification capex keep GEV in the sweet spot even with no fresh headline. At $1102.51 and up 4.09% in the position, I’d stay long but not chase; buy weakness in pieces because margin execution and supply-chain capacity matter more than today’s tape.

INTC

Day's Gain $
$0.00
Day's Gain %
0.00%
Total Gain $
-$105.49
Total Gain %
-0.53%

Qty # 150 · Last Price $131.72 · Value $19,758.00 · Total Cost $19,863.49

Semis first: Intel at 118x this year’s earnings is not cheap, so the bet is foundry execution three years out, not today’s P&L. Cantor can supersize the target, but I’d treat this as a watch-and-prove holding until margins, capex discipline, and real customer wins show up in the numbers.

MRVL

Day's Gain $
$0.00
Day's Gain %
0.00%
Total Gain $
-$2,790.50
Total Gain %
-10.04%

Qty # 90 · Last Price $277.75 · Value $24,997.50 · Total Cost $27,788.00

Semis first: MRVL is still an AI infrastructure call, with custom silicon, optical interconnects, and customer concentration driving the story, not the tape today. At a -10% position drag and no fresh headlines, I’d hold core, stop adding until margins and hyperscaler ramps show up, and buy weakness only in pieces.

SPCX

Day's Gain $
$0.00
Day's Gain %
0.00%
Total Gain $
-$91.43
Total Gain %
-21.78%

Qty # 2 · Last Price $164.19 · Value $328.38 · Total Cost $419.81

Space infrastructure is still the sector read: Russell 1000 inclusion gives SPCX a real flow bid, but index buying is not launch cadence, Starlink cash flow, or lower capex intensity. Down 21.78% in the position, I’d buy weakness only in pieces; this is own it, don’t trade it until the post-IPO slump actually breaks.

WDC

Day's Gain $
$0.00
Day's Gain %
0.00%
Total Gain $
-$4,654.08
Total Gain %
-15.15%

Qty # 40 · Last Price $651.88 · Value $26,075.20 · Total Cost $30,729.28

Memory is where the trade is on, but this headline is Sandisk’s glory, not automatic WDC credit unless NAND pricing shows up in Western Digital’s margins. Down 15%, I’d hold the core, stop chasing, and buy weakness only in pieces if supply discipline and enterprise demand keep tightening.

Watchlist

CBRS

CEREBRAS SYSTEMS INC COM CL A

$216.16 $0.00 (0.00%)

No fresh tape and a flat $216.16 print means the setup is unchanged: watch margins, customer concentration, and AI infrastructure pinch points like power, HBM, and advanced packaging. Sector tailwind is real, but for a watchlist name I want confirmation of revenue leverage before saying the trade is on.

GLW

CORNING INC COM

$255.69 $0.00 (0.00%)

No fresh headlines means no new catalyst, so GLW stays an optical-and-specialty-glass name tied to AI fiber demand, display pricing, auto glass, and margin recovery. I like it only on weakness until orders prove the trade is on; watch optical revenue, free cash flow, and capex discipline before chasing.

GOOGL

ALPHABET INC CAP STK CL A

$353.65 $0.00 (0.00%)

Mega-cap tech gets the Dow bid, but Alphabet has to prove AI protects Search margins and lifts Cloud growth instead of turning into a capex sink. Watch the next print for AI monetization, cloud backlog, and expense discipline; until then the debut pop is noise and the setup only improves on weakness.

IRDM

IRIDIUM COMMUNICATIONS INC COM

$54.59 $0.00 (0.00%)

IRDM is a watchlist name with the headline putting satellite services squarely in play, and the flat tape says investors need deal terms before they pay up. Watch valuation, customer concentration, and capex needs because in space communications the prize is durable recurring revenue, not the flashiest rocket story.

LITE

LUMENTUM HLDGS INC COM

$851.40 $0.00 (0.00%)

No fresh news and a flat tape means the setup has not changed: watch datacom optical demand, AI network capex, and margin recovery. I like the optical lane, but LITE has to show bookings strength and cleaner customer concentration before the trade is on.

PLTR

PALANTIR TECHNOLOGIES INC CL A

$115.70 $0.00 (0.00%)

For PLTR, this is sector fuel, not a company-specific catalyst: memory competition from SK Hynix and Samsung keeps AI capex moving and strengthens the enterprise AI spend story. I like the setup only on pullbacks; the next proof point is customer growth and operating leverage, not a flat tape at $115.70.

PWR

QUANTA SVCS INC COM

$714.45 $0.00 (0.00%)

Grid power is the sector story, and PWR lives right in the sweet spot: transmission, utility capex, data-center load, execution margins. Flat at $714.45 changes nothing; I like the name, but I wait for weakness or a fresh backlog catalyst before chasing.

Q

QNITY ELECTRONICS INC COMMON STOCK

$158.23 $0.00 (0.00%)

No fresh headlines, no new catalyst: the setup is unchanged, and a flat $158 print says the market is waiting for proof. Watch margins, capex discipline, customer concentration, and demand conversion; until then this is a watchlist name, not a chase, booyah.

RDDT

REDDIT INC CL A

$174.39 $0.00 (0.00%)

Social ads are the sector, and RDDT’s setup is still about proving messy community intent can become premium brand spend without wrecking trust. No move today changes nothing: watch ad load, pricing, and whether the new CMO can turn the campaign into real demand, because if margins scale with revenue, the trade is on.

SIMO

SILICON MOTION TECHNOLOGY CORP SPONSORED ADR

$331.94 $0.00 (0.00%)

Semis first: this SVB trial headline is noise for SIMO, not a read-through on controllers, NAND demand, or margins. Watch handset and PC storage demand, China exposure, and inventory turns; no move today means the setup has not changed.