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 6, 2026

% of stocks up

S&P 500 +1.9%

The S&P 500 moved +1.9% over the past five trading days. 59% of stocks rose; 2 moved more than twice their usual weekly range. PTC gained the most, +40%, and ALNY fell the most, −12%.

298 up, 204 down2 big moversBiggest: PTC +40%

Three months

Select any stock below to see how this week fits its last three months.

PTC · PTC Inc.

+40.3% this week. Price change over three months.

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 column to sort.

Stock	This week	× normal week	Unusual	1M	Sector
PTC PTC Inc.	+40.3%	5.1×	100Rare	+37%	Information Technology
CIEN Ciena	+25.0%	1.8×	99Rare	+38%	Information Technology
SNPS Synopsys	+21.7%	2.7×	100Rare	+28%	Information Technology
LITE Lumentum	+16.4%	1.1×	80Typical	+29%	Information Technology
COHR Coherent Corp.	+15.8%	1.0×	86Unusual	+20%	Information Technology
HPE Hewlett Packard Enterprise	+14.6%	1.2×	94Unusual	+36%	Information Technology
VST Vistra Corp.	+14.0%	2.0×	97Rare	+8%	Utilities
ADSK Autodesk	+13.8%	1.5×	97Rare	+6%	Information Technology
ON ON Semiconductor	+13.6%	1.3×	90Unusual	+16%	Information Technology
CEG Constellation Energy	+13.5%	1.8×	98Rare	0%	Utilities
FICO Fair Isaac	+12.6%	0.6×	91Unusual	−25%	Information Technology
CDNS Cadence Design Systems	+10.9%	1.4×	95Rare	+23%	Information Technology
RCL Royal Caribbean Group	+10.8%	1.2×	90Unusual	+9%	Consumer Discretionary
PWR Quanta Services	+10.4%	1.4×	95Rare	+15%	Industrials
MPC Marathon Petroleum	+10.3%	1.2×	94Unusual	+11%	Energy
CSCO Cisco	+10.3%	1.9×	97Rare	+8%	Information Technology
GEN Gen Digital	+9.4%	0.7×	91Unusual	−26%	Information Technology
NTAP NetApp	+9.2%	1.1×	92Unusual	+23%	Information Technology
ACN Accenture	+9.2%	1.1×	89Unusual	+4%	Information Technology
FIX Comfort Systems USA	+9.2%	1.0×	83Unusual	+13%	Industrials
MRVL Marvell Technology	+9.0%	0.8×	64Typical	+28%	Information Technology
FTNT Fortinet	+8.7%	1.0×	89Unusual	+22%	Information Technology
MPWR Monolithic Power Systems	+8.7%	1.0×	83Unusual	+20%	Information Technology
EME Emcor	+8.2%	1.2×	90Unusual	+9%	Industrials
INTU Intuit	+8.1%	0.7×	75Typical	−13%	Information Technology
VLO Valero Energy	+8.1%	0.9×	88Unusual	+13%	Energy
PANW Palo Alto Networks	+8.1%	0.8×	73Typical	+26%	Information Technology
TPL Texas Pacific Land Corporation	+8.0%	0.8×	79Typical	−2%	Energy
TSLA Tesla, Inc.	+7.9%	1.0×	88Unusual	+8%	Consumer Discretionary
MELI MercadoLibre	+7.7%	1.0×	85Unusual	−6%	Consumer Discretionary
ALNY Alnylam Pharmaceuticals	−11.9%	1.4×	95Rare	−16%	Health Care
STX Seagate Technology	−11.8%	1.0×	73Typical	−5%	Information Technology
CHRW C.H. Robinson	−9.8%	1.6×	90Unusual	−9%	Industrials
WDC Western Digital	−9.4%	0.7×	62Typical	−12%	Information Technology
INSM Insmed	−9.0%	1.0×	85Unusual	−17%	Health Care
APP AppLovin	−8.8%	0.8×	64Typical	−13%	Information Technology
INCY Incyte	−8.5%	1.4×	94Unusual	−11%	Health Care
MRNA Moderna	−7.9%	0.4×	–Typical	+29%	Health Care
LEN Lennar	−6.7%	1.0×	82Unusual	−7%	Consumer Discretionary
MOS Mosaic Company (The)	−6.6%	0.6×	75Typical	−19%	Materials
MKC McCormick & Company	−6.2%	1.1×	84Unusual	−13%	Consumer Staples
CPB Campbell's Company (The)	−6.1%	0.8×	86Unusual	−11%	Consumer Staples
KHC Kraft Heinz	−6.1%	1.1×	91Unusual	−11%	Consumer Staples
SWKS Skyworks Solutions	−6.0%	0.5×	68Typical	+12%	Information Technology
VTR Ventas	−5.8%	1.4×	88Unusual	−9%	Real Estate
DOC Healthpeak Properties	−5.6%	1.3×	91Unusual	−8%	Real Estate
ARE Alexandria Real Estate Equities	−5.3%	0.6×	59Typical	−13%	Real Estate
LVS Las Vegas Sands	−5.2%	0.9×	77Typical	−18%	Consumer Discretionary
LDOS Leidos	−5.2%	0.8×	75Typical	−12%	Industrials
BMY Bristol Myers Squibb	−5.2%	1.0×	88Unusual	−11%	Health Care
AMGN Amgen	−5.0%	0.9×	81Unusual	−8%	Health Care
MRK Merck & Co.	−4.9%	0.9×	80Typical	−6%	Health Care
WY Weyerhaeuser	−4.9%	0.8×	82Unusual	−19%	Real Estate
GIS General Mills	−4.8%	0.7×	77Typical	−16%	Consumer Staples
CAG Conagra Brands	−4.8%	0.8×	79Typical	−13%	Consumer Staples
JNJ Johnson & Johnson	−4.8%	1.1×	91Unusual	−7%	Health Care
GILD Gilead Sciences	−4.7%	0.9×	83Unusual	−4%	Health Care
DHR Danaher Corporation	−4.6%	0.8×	74Typical	+4%	Health Care
VRTX Vertex Pharmaceuticals	−4.6%	0.9×	81Unusual	−8%	Health Care
SW Smurfit Westrock	−4.5%	0.6×	54Typical	−8%	Materials

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 ›

What moved today, and why? ›

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