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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
−21.55 (−19.38%)
ARKK 89.62 · −21.5 pts (−19.38%) 5Y
349.33264.22179.1093.998.87EW +192.31%H 124.39 · Nov 4L 29.78 · Dec 27
Oct 1, 2021Jan 4, 2023Apr 9, 2024Jul 9, 2025Oct 9, 2026
Breadth
17 / 41
stocks fell with the index
Concentration
100%+
of the decline from NTLA, RXRX, XYZ
Biggest driver
NTLA −22.29
INTELLIA THERAPEUTICS INC, −90.25%
Biggest offset
TSLA +8.98
TESLA INC, +48.10%

What drove it

41 members · detractors first · 5Y · residual 794.9bp exceeds 60bp gate

The ARKK fell 19.38% (−21.55 pts) over five years, but 24 of 41 members went the other way. NTLA and RXRX dragged the tape lower, contributing more than the entire move.

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

+44.1 pts from 22 gainers−64.7 pts from 19 losers
net −21.5 pts · losers outweigh gainers 1.5 to 1
Stock
Points
Return
ARKKsum of all 41 stocks
−21.5
100%
−19.38%
NTLAINTELLIA THERAPEUTICS INC
−22.3
103%
−90.25%
RXRXRECURSION PHARMACEUTICALS-A
−6.6
31%
−80.05%
XYZBLOCK INC
−5.9
27%
−67.72%
BEAMBEAM THERAPEUTICS INC
−4.6
21%
−70.25%
COINCOINBASE GLOBAL INC -CLASS A
−4.5
21%
−22.39%
TXG10X GENOMICS INC-CLASS A
−4.3
20%
−43.91%
PACBPACIFIC BIOSCIENCES OF CALIF
−3.9
18%
−90.98%
CRSPCRISPR THERAPEUTICS AG
−2.7
13%
−52.03%
BLSHBULLISH
−2.6
12%
−52.09%
CBRSCEREBRAS SYSTEMS INC - A
−2.3
11%
−47.22%
WGSGENEDX HOLDINGS CORP
−1.7
8%
−73.22%
ACHRARCHER AVIATION INC-A
−1.4
7%
−40.76%
XEX-ENERGY INC
−0.5
2%
−53.05%
CERSCERUS CORP
−0.5
2%
−62.66%
SPCXSPACE EXPLORATION TECHN-CL A
−0.4
2%
+1.01%
11 othersclick to expand the full index
+2.6
12%
·
TSMTAIWAN SEMICONDUCTOR-SP ADR
+0.9
−4%
+338.88%
TWSTTWIST BIOSCIENCE CORP
+0.9
−4%
+51.45%
CRWVCOREWEAVE INC-CL A
+1.0
−5%
+105.20%
BWXTBWX TECHNOLOGIES INC
+1.2
−5%
+175.62%
GOOGALPHABET INC-CL C
+1.4
−7%
+157.17%
METAMETA PLATFORMS INC-CLASS A
+1.5
−7%
+111.33%
AMDADVANCED MICRO DEVICES
+1.8
−8%
+493.56%
AMZNAMAZON.COM INC
+2.0
−9%
+59.86%
AVGOBROADCOM INC
+2.8
−13%
+708.97%
NVDANVIDIA CORP
+2.9
−13%
+1,008.97%
PLTRPALANTIR TECHNOLOGIES INC-A
+3.1
−14%
+759.23%
TEMTEMPUS AI INC-CL A
+3.3
−15%
+76.22%
HOODROBINHOOD MARKETS INC - A
+3.9
−18%
+160.19%
BMNRBITMINE IMMERSION TECHNOLOGI
+5.2
−24%
+210.34%
TSLATESLA INC
+9.0
−42%
+48.10%
Cap weighting, illustrated

TESLA INC and CLOUDFLARE INC - CLASS A moved almost identically (+48.10% vs +46.56%), yet TSLA moved the ARKK 22.4× 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 −21.55 pt move · cell size = points contributed · color = direction, intensity = return
NTLA−22.3 pts(−90.3%)
TSLA+9.0 pts(+48.1%)
RXRX−6.6 pts(−80.1%)
XYZ−5.9 pts(−67.7%)
BMNR+5.2 pts(+210.3%)
BEAM−4.6 pts(−70.2%)
COIN−4.5 pts
TXG−4.3 pts(−43.9%)
HOOD+3.9 pts(+160.2%)
PACB−3.9 pts
TEM+3.3 pts(+76.2%)
PLTR+3.1 pts
NVDA+2.9 pts
AVGO+2.8 pts(+709.0%)
CRSP−2.7 pts(−52.0%)
BLSH−2.6 pts
CBRS
AMZN+2.0 pts(+59.9%)
AMD+1.8 pts(+493.6%)
WGS−1.7 pts
META
GOOG
ACHR−1.4 pts
BWXT+1.2 pts
TSM+0.9 pts
TER+0.8 pts
NTRA
LLY
XE

Concentration curve

cumulative share of the −21.55 pt move · sorted by contribution
0%50%100%10213141stocks:3 stocks = 161%100% covered at 1

When they drove it

cumulative points through the period
0NTLA −22.29RXRX −6.65XYZ −5.85TSLA +8.98BMNR +5.25HOOD +3.94Oct 1Oct 9

Breadth

member returns, this period
−100%+100%+300%+500%+700%+900%
From −90.98% (PACB) to +1,008.97% (NVDA). Equal-weight, the ARKK would be +192.31% vs the actual −19.38%; the gap is what cap weighting did.

By sector

point contribution · sums to −21.55 pts
Unknown41
−20.6

The year, session by session

every trading day of 2026 · hover for the move
JANFEBMARAPRMAYJUNJULAUGSEPOCT

Share this move

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