Applied Optoelectronics surges 15.4% to lead Friday's session

Biggest movers · At the close Aug 14, 4:10pm ET

Gainers

AAOIApplied Optoelectronics$150.13+15.4%
FUBOfuboTV$10.46+6.7%
SNDKSanDisk$1,627.62+6.5%
CIFRCipher Mining$17.69+6.4%
AMDAMD$508.57+5.3%

Losers

DUOLDuolingo$134.39-6.7%
ASANAsana$9.21-6.7%
SMRNuScale Power$9.27-5.9%
ACHRArcher Aviation$6.56-5.9%
AMCAMC Entertainment$2.51-4.8%

Applied Optoelectronics closed out the week up 15.4% at $150.13, nearly triple the next best move on the board. Chip and storage names filled in behind it, while Duolingo and Asana ended the week lower.

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Applied Optoelectronics closed Friday at $150.13, and its gain was nearly triple the next best performer on the board.

fuboTV, SanDisk, Cipher Mining, and AMD followed well behind, clustering in the second tier of gainers among chip and storage-adjacent names.

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Duolingo and Asana anchored the losing side, with NuScale Power, Archer Aviation, and AMC Entertainment also finishing lower.

The gap between Applied Optoelectronics and every other mover is what matters here: keep an eye on the stock next week to see whether it reflects a durable catalyst or a single-day surge without follow-through.

Sources

Mentioned: AAOI, AMD, SNDK, FUBO, CIFR, DUOL, ASAN, SMR

Related Market Updates

AAOI Applied Optoelectronics

Regular session

Aug 14, 10:40am ET

$148.13

+13.61% open $130.39

A 13.6% intraday jump to $148.13 puts Applied Optoelectronics near a $12.8 billion valuation in a single session. Moves this size rarely settle quietly, so keep an eye on the stock into the close.

Biggest movers · At the close Aug 13, 4:11pm ET

Gainers

WDAYWorkday$208.09+18.7%
SNDKSanDisk$1,525.29+13.5%
GPROGoPro$0.64+11.0%
ACHRArcher Aviation$6.92+9.9%
DOCUDocuSign$62.86+8.2%

Losers

COHRCoherent$328.25-7.7%
CIFRCipher Mining$16.54-7.4%
MARAMarathon Digital$9.29-3.7%
HIMSHims & Hers$29.09-2.9%
LCIDLucid$6.36-2.8%

Workday closed 18.7% higher at $208.09, the biggest single-session move across our 110-stock priority list. Software names took four of the five top spots, while Coherent and Cipher Mining each shed more than 7%.

SNDK SanDisk

Regular session

Aug 13, 12:00pm ET

$1541.66

+14.78% open $1343.20

A 14.8% single-session jump to $1,541.66 is a rare magnitude for a $204 billion chipmaker, adding roughly a quarter of a trillion-dollar tier move in hours. Whether the stock holds above the $1,343 open is the level that matters from here.

Biggest movers · At the close Aug 11, 4:10pm ET

Gainers

ACHRArcher Aviation$6.95+10.9%
AXONAxon Enterprise$640.51+7.4%
SMRNuScale Power$9.82+7.0%
CIFRCipher Mining$17.18+5.2%
DKNGDraftKings$25.32+4.3%

Losers

GPROGoPro$0.62-11.9%
APPSDigital Turbine$13.18-8.4%
DOCNDigitalOcean$120.52-7.1%
APPAppLovin$319.02-5.9%

Archer Aviation topped the winners at 10.9%, with Axon and NuScale both above 7%. GoPro led the decliners at -11.9%, followed by Digital Turbine at -8.4%.

Biggest movers · At the close Aug 6, 4:10pm ET

Gainers

CLOVClover Health$4.67+12.7%
SOUNSoundHound AI$7.03+9.3%
ALABAstera Labs$340.48+6.9%
JOBYJoby Aviation$8.25+5.8%
FNFabrinet$552+5.7%

Losers

APPAppLovin$334.86-19.9%
BROSDutch Bros$53.79-18.1%
FUBOfuboTV$9.22-13.5%
AXONAxon Enterprise$530.32-13.0%
DUOLDuolingo$121.84-10.0%

Owning expensive growth cost you today: AppLovin closed down 19.9%, with Axon and Duolingo double-digit and near double-digit losers alongside it. The money rotated into AI hardware, where Astera Labs and Fabrinet both finished higher.

DUOL Duolingo

Regular session

Aug 6, 10:40am ET

$114.35

-12.11% open $130.11

Duolingo is down 12%, a single-session repricing of the entire language-learning trade as investors question what free AI tutors do to subscriber growth.

FUBO fuboTV

Regular session

Aug 5, 10:40am ET

$9.78

+14.65% open $8.53

A 14.65% intraday jump off the $8.53 open puts fuboTV back near double digits, and at a $281 million market cap it takes very little to move this stock. Sports streaming headlines are doing the work.

DUOL Duolingo

After-hours

Aug 4, 5:20pm ET

$137.75

+10.19% open $125.01

A 10.19% run puts the language-learning app back at $137.75, and it happened after hours, when buyers set the price with conviction. Momentum money is circling edtech again.

Biggest movers · At the close Aug 4, 4:10pm ET

Gainers

PLTRPalantir$162.55+29.4%
AAOIApplied Optoelectronics$132.64+20.4%
ARMArm$280.61+17.4%
FNFabrinet$534.46+17.2%
COHRCoherent$330.85+14.8%

Losers

BRKRBruker$51.17-20.4%
VERXVertex$11.74-12.4%
CIFRCipher Mining$21.25-12.1%
AMCAMC Entertainment$2.63-7.7%
NVONovo Nordisk$44.09-6.4%

Palantir's 29% close pulled the entire AI complex with it, from Arm to the optical names supplying the data centers. Everything outside that trade got sold, with Bruker down 20% and Novo Nordisk sliding again.

CIFR Cipher Digital Inc.

Q2 2026

Aug 4, 7:37am ET

EPS

-$0.65

est -$0.14 -381.5%

Revenue

$25M

est $32M -21.7%

Mining revenue is draining away faster than the AI buildout can replace it, with a $150.5 million non-cash warrant charge driving the quarter's net loss. The offset investors are paying for: first HPC capacity at Black Pearl delivered two months early, rent started in August, and contracted leases targeting roughly $793 million in average annualized NOI, with Barber Lake rent beginning in October.

Biggest movers · At the close Aug 3, 4:10pm ET

Gainers

AAOIApplied Optoelectronics$110.13+16.8%
CIFRCipher Mining$25.07+12.3%
HIMSHims & Hers$30.76+10.8%
COHRCoherent$291.01+10.7%
LMNDLemonade$53.28+10.3%

Losers

MNSTMonster Beverage$93.15-3.4%
FANGDiamondback Energy$198.01-2.4%
CVXChevron$192.77-2.1%
SPOTSpotify$489.7-2.0%
FFord$14.48-1.4%

Money left oil and autos for optics today: Applied Optoelectronics closed up 16.8% at $110.13, with Coherent right behind it, while Chevron, Diamondback and Ford all finished red. Four of the top five gainers sit in AI infrastructure or high-growth consumer names.