Tempus AI leads the session with a 10.5% gain as losers bite harder

As seen on the 24/7 Wall St. homepage on September 15, 2026.

Biggest movers · At the close Sep 15, 4:10pm ET

Gainers

TEMTempus AI$68.74+10.5%
BRKRBruker$55.97+6.3%
QCOMQualcomm$187.79+4.2%
SSentinelOne$23.47+3.8%
RBRKRubrik$103.47+3.3%

Losers

AXONAxon Enterprise$444.7-9.3%
CAVACava$49.8-9.3%
CLOVClover Health$4.64-9.1%
FUBOfuboTV$10.9-8.2%
OPENOpendoor Technologies$2.65-5.2%

Tempus AI closed the session up 10.5%, the only double-digit move among 111 tracked names. The downside was deeper and broader: Axon, Cava and Clover Health all gave up more than 9%.

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Tempus AI was the standout name at the close on September 15, finishing at $68.74 after rising 10.5%, the only double-digit percentage move in either direction across all 111 names tracked for the session.

The rest of the gainers' board was more measured, with Bruker, Qualcomm, SentinelOne and Rubrik rounding out the top five on single-digit advances.

Sources

Mentioned: TEM, BRKR, QCOM, S, RBRK, AXON, CAVA, CLOV

Related Market Updates

the next-gen security showdown · 1y Oct 26, 6:00pm ET

$10K invested in each — worth today:

S$14.5K1.4×

ZS$8.0K0.8×

Same $10,000, same sector, same year: SentinelOne turned it into $14,489 while Zscaler left you with $7,981. A $6,500 gap inside one cybersecurity trade.

Biggest movers · On the open Oct 26, 9:50am ET

Gainers

TSLATesla$389.13+4.5%
RBRKRubrik$132.42+2.9%
SKHYSK hynix$140.78+2.7%
PANWPalo Alto Networks$388.88+2.2%
DBDeutsche Bank$31.85+2.1%

Losers

NUNu Holdings$11.88-21.7%
ITUBItau Unibanco$7.61-21.3%
PBR-APetrobras$19.58-16.8%
PBRPetrobras$21.81-16.6%
MELIMercadoLibre$1,604.99-11.3%

Every one of the five biggest decliners at the open is a Brazil-linked name, led by Nu Holdings down 21.7% and Itau Unibanco down 21.3%. Tesla tops the gainers at 4.5%, a fraction of the damage on the other side of the board.

RBRK Rubrik

Oct 23, 6:00pm ET

New 52-week high $128.74 +2.3% vs prior high · 2026-10-06

Rubrik just marked a new 52-week high at $128.74, 2.34% above the record it set on October 6. That's nearly triple the $43.81 low this name traded at in April.

Biggest movers · At the close Oct 20, 4:10pm ET

Gainers

GPROGoPro$1.12+7.7%
CLOVClover Health$4.78+7.5%
BILLBill Holdings$48.93+7.1%
MRNAModerna$240.74+6.1%
ARGXargenx$874.58+5.9%

Losers

GMGeneral Motors$76.56-7.5%
GEGE Aerospace$299.39-3.8%
IRENIREN$26.68-3.8%
HWMHowmet Aerospace$211.94-3.7%
PWRQuanta Services$597.07-3.5%

General Motors shed 7.5% into the close, the worst showing across 387 priority names and nearly double the next-biggest decline. GoPro and Clover Health anchored the other end, each up more than 7.5%.

Kalshi @kalshi

Oct 20, 8:00am ET

An internal memo tying global headcount cuts to annual reviews points to opex discipline heading into Qualcomm's next quarter, with handset demand already soft. Keep an eye on the stock for how much of that lands in margins.

JUST IN: Qualcomm to cut jobs globally in "performance-focused reduction" after annual reviews, internal memo shows https://t.co/98tqWIBUnq

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AXON Axon Enterprise

After-hours

Oct 16, 4:00pm ET

$389.21

-7.71% open $421.73

A 7.71% drop to $389.21 takes roughly $2.6 billion off a $31.6 billion company in a single session, an outsized move for a name that rarely swings this hard. Whether the after-hours level holds into tomorrow's open is the thing to track.

S SentinelOne

Regular session

Oct 16, 2:20pm ET

$21.11

-9.94% open $23.43

A 9.94% drop wipes roughly $700 million off SentinelOne's market cap in a single session. Moves this size are rare for the name, and the opening level is now one it has to climb back to.

Biggest movers · At the close Oct 13, 4:11pm ET

Gainers

NVTSNavitas Semiconductor$10.52+5.3%
VLOValero Energy$457.04+4.8%
ORCLOracle$143.28+4.3%
MPCMarathon Petroleum$476.94+4.0%
BPBP$48.57+3.9%

Losers

CIFRCipher Digital$11.29-13.1%
AMATApplied Materials$462.77-7.0%
SSentinelOne$24.05-6.3%
FNFabrinet$427.9-6.2%
GTLBGitLab$52.7-5.9%

Cipher Digital's 13.1% drop was the deepest cut in a 385-name priority list at the close. Refiners and Oracle took the other side.

52-week highs Oct 9, 6:00pm ET

36 stocks hit new 52-week highs this week

PBRPetrobras$25.3+16.2%
PEverpure$154.49+15.2%
PBR-APetrobras$22.47+14.8%
HPEHewlett Packard Enterprise$73.46+13.8%
MRNAModerna$225+10.6%
MPCMarathon Petroleum$455.03+9.1%
FTNTFortinet$194.75+8.9%
RBRKRubrik$125.14+8.8%
ITUBItau Unibanco$10.16+8.4%
GTLBGitLab$55.09+7.9%

36 stocks set fresh 52-week highs this week, with Petrobras clearing its old peak by 16%. Hewlett Packard Enterprise, Moderna, Marathon Petroleum, Fortinet, Rubrik and GitLab round out the breakout list.

CLOV Clover Health

Regular session

Oct 9, 11:00am ET

$4.71

-8.27% open $5.14

An 8.3% slide to $4.72 wipes out the $5 handle on a $2.1 billion insurer, and it lands a day after the stock already shed 6.9%. Back-to-back drops like this reset the base for anyone waiting to buy.

Biggest movers · On the open Oct 9, 9:51am ET

Gainers

AAOIApplied Optoelectronics$115.37+8.9%
CLOVClover Health$4.99+8.8%
COHRCoherent$324.08+7.2%
AMTAmerican Tower$178.57+7.1%
LITELumentum$1,120.85+6.9%

Losers

TMUST-Mobile US$156.09-8.9%
TAT&T$22.75-8.5%
VZVerizon$43.13-7.0%
JOBYJoby Aviation$5.46-5.1%
APLDApplied Digital$22.97-3.7%

All three major US wireless carriers are at the bottom of the board at the open, with T-Mobile down 8.9% and AT&T and Verizon close behind. Optical names lead the other side, Applied Optoelectronics up 8.9%.

Biggest movers · At the close Oct 8, 4:11pm ET

Gainers

ACNAccenture$208.79+6.2%
ASANAsana$9.82+5.3%
MPCMarathon Petroleum$463.74+4.9%
FIGFigma$22.65+4.7%
CAVACava$54.51+4.7%

Losers

AAOIApplied Optoelectronics$105.33-14.1%
COHRCoherent$302.69-9.5%
ALABAstera Labs$346.2-9.4%
CRWVCoreWeave$81.5-7.9%
IRENIren$35.66-7.8%

Optical and data center names filled four of the five worst spots at this close, led by Applied Optoelectronics at -14%. Accenture's 6.2% gain was the best of a far tamer upside.