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WHAT MOVED THE MARKET TODAY

ARK Innovation ETF

41 stocks · cap-weighted, ETF-derived weights · Oct 9, 2026 close
89.62
+20.33 (+29.34%)
ARKK 89.62 · +20.3 pts (+29.34%) 6M
97.0689.6682.2674.87EW +32.56%H 92.78 · Oct 5L 69.29 · Apr 10
Apr 10May 27Jul 13Aug 26Oct 9
Breadth
29 / 41
stocks rose with the index
Concentration
37%
of the gain from TEM, TWST, TSLA
Biggest driver
TEM +3.10
TEMPUS AI INC-CL A, +65.18%
Biggest drag
CBRS −2.31
CEREBRAS SYSTEMS INC - A, −47.22%

What drove it

41 members · drivers first · 6M · residual 1369.7bp exceeds 60bp gate

The ARKK rose 29.34% (+20.33 pts) over the past six months on a mixed tape; TEM, TWST, TSLA 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

+24.9 pts from 33 gainers−7.2 pts from 8 losers
net +20.3 pts · gainers outweigh losers 3.5 to 1
Stock
Points
Return
ARKKsum of all 41 stocks
+20.3
100%
+29.34%
TEMTEMPUS AI INC-CL A
+3.1
15%
+65.18%
TWSTTWIST BIOSCIENCE CORP
+2.4
12%
+233.50%
TSLATESLA INC
+2.1
10%
+9.67%
TXG10X GENOMICS INC-CLASS A
+2.1
10%
+246.58%
HOODROBINHOOD MARKETS INC - A
+2.1
10%
+57.57%
SHOPSHOPIFY INC - CLASS A
+1.6
8%
+54.21%
PLTRPALANTIR TECHNOLOGIES INC-A
+1.4
7%
+63.24%
AMDADVANCED MICRO DEVICES
+1.3
6%
+148.16%
CRSPCRISPR THERAPEUTICS AG
+0.9
4%
+4.24%
XYZBLOCK INC
+0.8
4%
+24.19%
COINCOINBASE GLOBAL INC -CLASS A
+0.8
4%
+6.88%
METAMETA PLATFORMS INC-CLASS A
+0.6
3%
+14.20%
NTRANATERA INC
+0.5
3%
+107.59%
BMNRBITMINE IMMERSION TECHNOLOGI
+0.5
3%
+12.99%
AMZNAMAZON.COM INC
+0.5
3%
+10.09%
11 othersclick to expand the full index
+3.7
18%
·
TSMTAIWAN SEMICONDUCTOR-SP ADR
+0.2
1%
+22.58%
LLYELI LILLY & CO
+0.1
1%
+25.68%
SOFISOFI TECHNOLOGIES INC
+0.1
0%
−2.59%
AVGOBROADCOM INC
+0.1
0%
−2.53%
CERSCERUS CORP
+0.1
0%
+21.69%
NTLAINTELLIA THERAPEUTICS INC
+0.0
0%
−3.11%
TERTERADYNE INC
+0.0
0%
+8.39%
ARKYARK ACTIVE AUTOCALL INC ETF
−0.0
0%
+0.83%
KTOSKRATOS DEFENSE & SECURITY
−0.3
−2%
−39.78%
SPCXSPACE EXPLORATION TECHN-CL A
−0.4
−2%
+1.01%
XEX-ENERGY INC
−0.5
−2%
−53.05%
BWXTBWX TECHNOLOGIES INC
−0.5
−2%
−37.28%
CRCLCIRCLE INTERNET GROUP INC
−1.6
−8%
−3.99%
CRWVCOREWEAVE INC-CL A
−1.6
−8%
−19.53%
CBRSCEREBRAS SYSTEMS INC - A
−2.3
−11%
−47.22%
Cap weighting, illustrated

TEMPUS AI INC-CL A and PACIFIC BIOSCIENCES OF CALIF moved almost identically (+65.18% vs +73.88%), yet TEM moved the ARKK 12.4× 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 +20.33 pt move · cell size = points contributed · color = direction, intensity = return
TEM+3.1 pts(+65.2%)
TWST+2.4 pts(+233.5%)
CBRS−2.3 pts(−47.2%)
TSLA+2.1 pts(+9.7%)
TXG+2.1 pts(+246.6%)
HOOD+2.1 pts(+57.6%)
SHOP+1.6 pts(+54.2%)
CRWV−1.6 pts(−19.5%)
CRCL−1.6 pts(−4.0%)
PLTR+1.4 pts
AMD+1.3 pts(+148.2%)
CRSP+0.9 pts
XYZ+0.8 pts(+24.2%)
COIN+0.8 pts(+6.9%)
META+0.6 pts(+14.2%)
NTRA+0.5 pts
BMNR+0.5 pts
AMZN+0.5 pts
ILMN
NVDA+0.5 pts
BWXT−0.5 pts
RXRX+0.5 pts
XE
SPCX
GOOG+0.4 pts
NET+0.4 pts
PACB
BEAM
BLSH
ACHR

Concentration curve

cumulative share of the +20.33 pt move · sorted by contribution
0%50%100%10213141stocks:3 stocks = 37%100% covered at 15

When they drove it

cumulative points through the period
0TEM +3.10TWST +2.36TSLA +2.12CBRS −2.31CRWV −1.56CRCL −1.56Apr 10Oct 9

Breadth

member returns, this period
−100%0%+100%+200%
From −53.05% (XE) to +246.58% (TXG). Equal-weight, the ARKK would be +32.56% vs the actual +29.34%; the gap is what cap weighting did.

By sector

point contribution · sums to +20.33 pts
Unknown41
+17.7

The year, session by session

every trading day of 2026 · hover for the move
JANFEBMARAPRMAYJUNJULAUGSEPOCT

Share this move

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