What moved this week?

A single day can be noise; a week of moves shows which stories the market actually acted on. Measuring each move against what is normal for that stock separates real news from ordinary swings.

Updated Oct 9, 2026

% of stocks up

S&P 500 +1.2%

The S&P 500 moved +1.2% over the past five trading days. 70% of stocks rose; 5 moved more than twice their usual weekly range. PTC gained the most, +35%, and ARM fell the most, −13%.

350 up, 152 down5 big moversBiggest: PTC +35%

The 30 biggest gainers and losers

Price change over the past five trading days. Unusual shows how the move compares with every week of the past year for that stock. Select a row for its chart. Select a column to sort.

Stock	This week	× normal week	Unusual	1M	Sector
PTC PTC Inc.	+35.0%	4.5×	100Rare	+51%	Information Technology
CCI Crown Castle	+19.9%	3.1×	100Rare	+8%	Real Estate
ZS Zscaler	+18.9%	1.8×	96Rare	+43%	Information Technology
MRNA Moderna	+18.4%	0.8×	–Typical	+65%	Health Care
CEG Constellation Energy	+15.8%	1.7×	100Rare	+4%	Utilities
VST Vistra Corp.	+15.3%	1.9×	99Rare	+10%	Utilities
SBAC SBA Communications	+15.1%	2.2×	98Rare	+1%	Real Estate
CIEN Ciena	+14.9%	1.2×	88Unusual	+34%	Information Technology
NRG NRG Energy	+13.4%	1.4×	99Rare	−3%	Utilities
AMT American Tower	+12.4%	2.3×	100Rare	+5%	Real Estate
CBOE Cboe Global Markets	+12.1%	1.3×	95Unusual	+6%	Financials
MELI MercadoLibre	+11.4%	1.6×	96Rare	−1%	Consumer Discretionary
HUM Humana	+11.2%	1.5×	89Unusual	+8%	Health Care
ADSK Autodesk	+11.0%	1.3×	93Unusual	+11%	Information Technology
PLTR Palantir Technologies	+10.8%	1.4×	83Unusual	+26%	Information Technology
STZ Constellation Brands	+8.7%	1.6×	98Rare	−1%	Consumer Staples
TSCO Tractor Supply	+8.4%	1.2×	94Unusual	+1%	Consumer Discretionary
VRSK Verisk Analytics	+8.4%	1.1×	89Unusual	+1%	Industrials
CSGP CoStar Group	+8.4%	0.9×	83Unusual	+1%	Real Estate
VEEV Veeva Systems	+8.3%	1.1×	80Unusual	+13%	Health Care
ISRG Intuitive Surgical	+8.2%	1.3×	94Unusual	+18%	Health Care
FDS FactSet	+8.0%	0.8×	78Typical	+9%	Financials
PDD PDD Holdings	+7.9%	1.5×	91Unusual	+5%	Consumer Discretionary
MPC Marathon Petroleum	+7.7%	0.9×	84Unusual	+16%	Energy
INTU Intuit	+7.7%	0.8×	73Typical	−3%	Information Technology
FTNT Fortinet	+7.6%	1.0×	85Unusual	+23%	Information Technology
ZTS Zoetis	+7.3%	1.2×	92Unusual	+3%	Health Care
GDDY GoDaddy	+7.3%	0.7×	83Unusual	+8%	Information Technology
PM Philip Morris International	+7.3%	1.4×	94Unusual	+6%	Consumer Staples
DG Dollar General	+7.0%	1.0×	83Unusual	+3%	Consumer Staples
ARM Arm Holdings	−13.4%	1.0×	79Typical	+5%	Information Technology
INTC Intel	−12.3%	1.1×	75Typical	+4%	Information Technology
MOS Mosaic Company (The)	−11.1%	1.0×	92Unusual	−26%	Materials
TER Teradyne	−10.3%	1.0×	72Typical	+9%	Information Technology
SWKS Skyworks Solutions	−10.2%	0.9×	88Unusual	−9%	Information Technology
CHRW C.H. Robinson	−9.8%	1.6×	90Unusual	−7%	Industrials
DE Deere & Company	−9.6%	1.7×	97Rare	−8%	Industrials
INSM Insmed	−9.5%	0.9×	87Unusual	−21%	Health Care
VZ Verizon	−9.3%	2.1×	96Rare	−17%	Communication Services
TMUS T-Mobile US	−9.2%	1.5×	98Rare	−16%	Communication Services
T AT&T	−8.7%	1.8×	96Rare	−13%	Communication Services
ON ON Semiconductor	−8.7%	0.9×	73Typical	+10%	Information Technology
LRCX Lam Research	−8.2%	0.9×	70Typical	+7%	Information Technology
SNDK Sandisk	−8.0%	0.6×	34Typical	−7%	Information Technology
STX Seagate Technology	−7.8%	0.5×	53Typical	−9%	Information Technology
COHR Coherent Corp.	−7.2%	0.5×	46Typical	+7%	Information Technology
MCHP Microchip Technology	−7.1%	0.9×	73Typical	+6%	Information Technology
NXPI NXP Semiconductors	−6.6%	1.0×	77Typical	0%	Information Technology
AMAT Applied Materials	−6.1%	0.8×	58Typical	+12%	Information Technology
BLDR Builders FirstSource	−6.0%	0.6×	65Typical	−10%	Industrials
HPQ HP Inc.	−6.0%	0.6×	73Typical	−8%	Information Technology
KLAC KLA Corporation	−5.5%	0.7×	54Typical	+10%	Information Technology
CHTR Charter Communications	−5.4%	0.4×	62Typical	−26%	Communication Services
CAT Caterpillar Inc.	−5.3%	0.9×	72Typical	−1%	Industrials
HRL Hormel Foods	−5.2%	1.0×	83Unusual	−8%	Consumer Staples
QCOM Qualcomm	−5.1%	0.5×	62Typical	−1%	Information Technology
ROK Rockwell Automation	−4.8%	1.0×	82Unusual	+3%	Industrials
ASML ASML Holding	−4.7%	0.8×	63Typical	+6%	Information Technology
GLW Corning Inc.	−4.6%	0.4×	43Typical	−4%	Information Technology
GRMN Garmin	−4.6%	0.8×	75Typical	−1%	Consumer Discretionary

How to read this page

How it’s measured. Price change over the last five trading days for S&P 500 and Nasdaq-100 stocks. A normal week is the stock’s average daily range scaled to five days; unusual compares this week with every week of the past year.

Sources. Daily prices from Financial Modeling Prep.

A normal week is the stock’s 14-day average true range, measured before this week, scaled to five days. A move of 2× is well outside its usual range.

In our research, big moves have not reliably reversed or continued on their own. A large weekly move tells you to look at the news, not which way to trade.

This page is information, not investment advice. About our data and methods ›

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