S&P 500 · WMTMT

Dec 31Mar 13May 21Aug 3Oct 9

Breadth

298 / 503

stocks rose with the index

Concentration

37%

of the gain from NVDA, AAPL, MU

Biggest driver

NVDA +157

NVIDIA CORP, +23.09%

Biggest drag

TSLA −19

TESLA INC, −14.90%

What drove it

503 members · drivers first · YTD · residual 93.5bp exceeds 60bp gate

The S&P 500 rose 14.11% (+966 pts) so far this year on a mixed tape; NVDA, AAPL, MU did most of the lifting, with 37% of the gain between them.

Read the latest market-close note: Goldman and Microsoft Push the Dow to a Large Gain While Telecoms Sink Communication Services

+1,275.5 pts from 259 gainers−337.3 pts from 244 losers

net +966.0 pts · gainers outweigh losers 3.8 to 1

Stock

Points

Return

S&P 500sum of all 503 stocks

+966.0

+14.11%

NVDANVIDIA CORP

+157.5

+23.09%

AAPLAPPLE INC

+100.1

+24.06%

MUMICRON TECHNOLOGY INC

+99.4

+260.70%

AMDADVANCED MICRO DEVICES

+80.4

+183.95%

MSFTMICROSOFT CORP

+61.3

+11.13%

AMZNAMAZON.COM INC

+48.5

+13.69%

INTCINTEL CORP

+29.8

+183.74%

GOOGLALPHABET INC CL A

+25.5

+12.50%

METAMETA PLATFORMS INC CLASS A

+23.8

+9.06%

SNDKSANDISK CORP

+23.0

+566.37%

AMATAPPLIED MATERIALS INC

+22.6

+97.79%

LRCXLAM RESEARCH CORP

+20.4

+86.61%

GOOGALPHABET INC CL C

+19.2

+11.00%

PANWPALO ALTO NETWORKS INC

+18.8

+127.35%

CSCOCISCO SYSTEMS INC

+18.2

+55.34%

473 othersclick to expand the full index

+322.1

HDHOME DEPOT INC

−5.4

−14.29%

COFCAPITAL ONE FINANCIAL CORP

−5.5

−17.08%

BRK-BBERKSHIRE HATHAWAY INC CL B

−5.5

+2.55%

MCDMCDONALD S CORP

−6.2

−22.08%

ABTABBOTT LABORATORIES

−6.2

−19.54%

MNSTMONSTER BEVERAGE CORP

−7.0

−43.08%

ISRGINTUITIVE SURGICAL INC

−7.0

−25.14%

BSXBOSTON SCIENTIFIC CORP

−8.6

−55.18%

IBMINTL BUSINESS MACHINES CORP

−9.5

−22.31%

INTUINTUIT INC

−9.6

−54.06%

ORCLORACLE CORP

−9.9

−26.52%

NFLXNETFLIX INC

−10.3

−25.02%

APPAPPLOVIN CORP CLASS A

−11.4

−58.89%

APHAMPHENOL CORP CL A

−11.8

−35.26%

TSLATESLA INC

−18.5

−14.90%

Cap weighting, illustrated

MICROSOFT CORP and CITIZENS FINANCIAL GROUP moved almost identically (+11.13% vs +10.38%), yet MSFT moved the S&P 500 1,469.4× as much. In a cap-weighted index, the bigger company's weight turns the same percentage move into far more points.

Attribution map

slicing the +966 pt move · cell size = points contributed · color = direction, intensity = return

NVDA+157.5 pts(+23.1%)

AAPL+100.1 pts(+24.1%)

MU+99.4 pts(+260.7%)

AMD+80.4 pts(+183.9%)

MSFT+61.3 pts(+11.1%)

AMZN+48.5 pts(+13.7%)

INTC+29.8 pts

GOOGL+25.5 pts

Concentration curve

cumulative share of the +966 pt move · sorted by contribution

When they drove it

cumulative points through the period

Breadth

member returns, this period

−100%+100%+300%+500%

From −60.50% (FICO) to +662.97% (MRNA). Equal-weight, the S&P 500 would be +13.61% vs the actual +14.11%; the gap is what cap weighting did.

By sector

point contribution · sums to +966 pts

-503

+938.1

The year, session by session

every trading day of 2026 · hover for the move

JANFEBMARAPRMAYJUNJULAUGSEPOCT

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