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Session brief · Monday, September 28, 2026 close

Stocks slipped. 3,444 fell, 1,549 rose — and healthcare bucked the tape.

8 of 11 sectors finished lower. Healthcare led at +0.51%; Materials lagged at -1.19%.

The biggest liquid gainer was Kodiak Sciences (KOD), up 178.0% in healthcare.

Among benchmarks, DIA (Dow 30) did best at -0.67% and QQQ (Nasdaq-100) did worst at -1.07%.

43 stocks worth $300M+ closed at new highs and 182 at new lows; 29 traded at least three times their usual volume.

Written from 5,144 common stocksSource: Massive / Polygon daily aggregatesHow the brief is written
Market breadth
5,144 common stocks · previous-session close
▲ 1,549 advancing (30.1%)151 unchanged▼ 3,444 declining (67.0%)

Sectors, cap-weighted

SectorChangeRisingFalling
Healthcare+0.51%403429
Consumer Staples+0.29%4667
Energy+0.08%2997
Real Estate−0.38%61163
Utilities−0.52%1597
Industrials−0.62%115291
Communication Services−0.91%3785
Technology−0.96%158460
Financials−1.12%188578
Consumer Discretionary−1.16%195345
Materials−1.19%57192

Benchmarks

FundCloseChange
SPYS&P 500765.61−0.74%
QQQNasdaq-100736.53−1.07%
IWMRussell 2000280.02−0.69%
DIADow 30514.02−0.67%

43 new highs · 182 new lows · 29 on unusual volume

Top gainers

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KODKodiak SciencesHealthcare$89.92+178.0%LFCRLifecore BiomedicalHealthcare$6.52+55.2%EGGEnigmatig LimitedUnclassified$4.25+51.8%YDESYD Bio LimitedUnclassified$7.11+24.1%ZSQRZ SquaredFinancials$4.54+20.1%QNCQuantum eMotionUnclassified$2.20+17.0%

Top losers

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ITGITGIndustrials$7.07−32.6%OCULOcular TherapeutixHealthcare$7.66−20.7%CYPHCypherpunk TechnologiesHealthcare$3.31−19.7%GLNDGreenland EnergyEnergy$4.49−19.0%IMDXInsight Molecular DiagnosticsHealthcare$3.18−18.9%MNOVMedicinovaHealthcare$2.10−18.6%

Most active

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NVDANvidia142.3M shares$228.86+1.7%MUMicron Technology22.2M shares$1,053.98−2.6%METAMeta Platforms27.9M shares$715.62−4.8%TSLATesla39.5M shares$357.45−3.9%AMDAdvanced Micro Devices22.1M shares$607.87−3.6%INTCIntel112.4M shares$116.03−5.7%

Common stocks · $2+ · 500K+ shares · $100M+ market cap · previous-session close. Changes compare the Sep 28, 2026 close with Sep 25, 2026; stocks with unexplained price jumps are excluded.