Ten stocks joined Wall Street’s lackluster performance on Monday, as investor sentiment was dampened by a series of negative developments, including a lackluster outlook and earnings, as well as share sale programs.
Meanwhile, Wall Street’s three major indices all finished in the red. The Dow Jones fell by 0.45 percent, the tech-heavy Nasdaq dropped by 0.30 percent, and the S&P 500 declined by 0.25 percent.
In this article, we name the 10 companies with the worst performance on Monday, alongside the reasons behind their decline.
To compile the list, we focused exclusively on stocks with $2 billion in market capitalization and at least 5 million shares in trading volume.
A man in black suit holding a tablet looks at stock market data on a monitor. Photo by Tima Miroshnichenko on Pexels
10. Under Armour Inc. (NYSE:UAA)
Under Armour extended its losing streak to a third consecutive day on Monday, shedding another 5.88 percent to close at $5.12 apiece following the rating and price target downgrades from two investment firms.
In its market note, Truist Securities lowered its price target for shares of Under Armour Inc. (NYSE:UAA) to $5 from $7 previously, while maintaining a “hold” rating, amid tariff headwinds that continue to put incremental pressure on its bottomline.
While Under Armour Inc. (NYSE:UAA) has previously expressed optimism about emerging positive indicators, Truist said it was waiting for more signs that turnaround initiatives and heavy brand investments would help drive demand before meriting an upgrade.
For its part, Stifel gave a price target higher than Truist, at $9, albeit a downgrade from the $10 previously. Stifel also maintained a “buy” recommendation for the stock.
According to Stifel, its revision reflected Under Armour Inc.’s (NYSE:UAA) weaker outlook guidance for the second quarter of fiscal year 2026, adding that the full fiscal 2026 could be half of 2025 levels.
On Friday, Under Armour Inc. (NYSE:UAA) said it narrowed its net loss for the first quarter of fiscal year 2026 by 99 percent to $2.6 million from $305 million in the same period last year.
9. Transocean Ltd. (NYSE:RIG)
Transocean dropped its share prices by 6.13 percent on Monday to close at $2.91 apiece as investors soured on the company’s planned debt-to-equity swap program that could result in a potential dilution of existing shares.
In a regulatory filing on Monday, Transocean Ltd. (NYSE:RIG) said that its wholly owned subsidiary, Transocean International Ltd., entered into separate, individual agreements with certain shareholders for its 4-percent senior guaranteed exchangeable bonds due this year.
Under the agreement, the bondholders agreed to swap $39.7 million of bonds for shares of Transocean Ltd. (NYSE:RIG) at a price yet to be determined. The price would be based on the daily volume-weighted average price over a five-day trading period, including August 11.
In recent news, Transocean Ltd. (NYSE:RIG) widened its net loss in the second quarter of the year by 663 percent to $938 million from only $123 million in the same period last year.
Revenues, on the other hand, increased by 14.7 percent to $988 million from $861 million previously.
As of July 2025, the company has a total backlog of $7.2 billion.
8. Twilio Inc. (NYSE:TWLO)
Twilio Inc. dropped its share prices for a third consecutive day on Monday to touch a new three-month low, as investor sentiment soured on the company’s profit margin headwinds.
At intra-day trading, Twilio Inc. (NYSE:TWLO) dropped to a three-month low of $91.85, from $92.85 last April 30, before a slight uptick to end the day just down by 6.31 percent at $92.44 apiece.
Monday also marked the second day of falling below the $100 territory, a level it last touched on May 1.
In recent news, Twilio Inc. (NYSE:TWLO) swung to a net income attributable to shareholders of $22.4 million from $31.8 million in the same period last year.
Revenues increased by 13.5 percent to $1.228 billion from $1.082 billion year-on-year.
Following the results, Twilio Inc. (NYSE:TWLO) raised its organic revenue growth guidance to between 9 and 10 percent, from the 7.5 to 8.5 percent expected previously. Revenues were targeted to increase by 10 to 11 percent year-on-year.
7. Clearwater Analytics Holdings, Inc. (NYSE:CWAN)
Clearwater Analytics saw its share prices decline by 6.44 percent on Monday to end at $18.45 apiece as investor sentiment remains dampened by a dismal earnings performance in the second quarter of the year, despite earning a rating upgrade from an investment company.
In an updated report, Clearwater Analytics Holdings, Inc. (NYSE:CWAN) widened its net loss attributable to shareholders in the second quarter of the year by 5,301 percent to $23.2 million from only $430,000 in the same period last year.
Revenues were higher by 70 percent to $181.9 million from $106.79 million year-on-year.
The company also swung to a net loss of $16.5 million in the first half of the year from a net income of $1.47 million in the same comparable period. Revenues grew by 47 percent to $308.8 million from $209.5 million year-on-year.
Despite the results, Clearwater Analytics Holdings, Inc. (NYSE:CWAN) earned a “buy” recommendation from Goldman Sachs, a revision from the “neutral” stance previously. However, it maintained its price target of $27 for the stock.
6. SharpLink Gaming, Inc. (NASDAQ:SBET)
SharpLink Gaming snapped a five-day winning streak on Monday, shedding 6.63 percent to finish at $22.33 apiece as investors soured on news that it raised $400 million from a series of share purchase agreements.
In a statement, SharpLink Gaming, Inc. (NASDAQ:SBET) said it entered into share purchase agreements with five global institutional investors for the sale of securities at a price of $21.76 apiece. With some $400 million total proceeds expected to be raised, this means that the company is set to issue more than 18.3 million shares. The offer is expected to be completed on Tuesday, August 12.
The offering was said to be part of a shelf registration statement approved by the Securities and Exchange Commission on May 30, 2025.
SharpLink Gaming, Inc.’s (NASDAQ:SBET) share sale was in line with expectations of growing its Ethereum holdings to $3 billion.
At present, SharpLink Gaming, Inc. (NASDAQ:SBET) holds 598,800 units of ETH, while approximately $200 million worth of proceeds from its recent at-the-market offering have yet to be deployed.
“Raising nearly $900 million in capital over the past week underscores the market’s confidence in SharpLink’s ETH treasury strategy. The speed and scale of these investments reflect not only investor trust in SharpLink, but also the growing recognition of Ethereum’s transformative potential,” said SharpLink Gaming, Inc. (NASDAQ:SBET) co-CEO Joseph Chalom.
5. Upstart Holdings, Inc. (NASDAQ:UPST)
Upstart Holdings dropped its share prices for a second day on Monday, shedding 7.71 percent to close at $63.46 apiece as investors soured on its plans to raise $500 million from the issuance of convertible senior notes.
In a statement, Upstart Holdings, Inc. (NASDAQ:UPST) said that the notes will have a tenor of 7 years and will mature in 2032, unless earlier converted, repurchased, or redeemed.
It also granted the initial buyers an option to purchase up to $75 million within a 13-day period beginning on the date the notes are first issued.
The notes can be converted into cash or shares of its common stock, or they can prefer to convert into a combination of both.
According to Upstart Holdings, Inc. (NASDAQ:UPST), proceeds from the offer will be used to pay the cost of the offering, as well as repurchase for cash a portion of its outstanding 0.25 percent Convertible Senior Notes due 2026.
The balance will be allocated for general corporate purposes, which may include the repayment or retirement of existing debt, including the repurchase or retirement of the 2026 Notes.
4. AAON, Inc. (NASDAQ:AAON)
AAON tumbled by 10.49 percent on Monday to close at $72.07 apiece following a disappointing earnings performance in the second quarter of the year.
In its updated report, AAON, Inc. (NASDAQ:AAON) said net income declined by 70 percent to $15.5 million from $52 million in the same period last year. Net sales slightly dipped to $311 million from $313 million year-on-year, dragged down by an 18-percent decrease in net sales from its Oklahoma segment.
In the first half of the year, net income decreased by 50.9 percent to 44.78 million from $91.2 million in the same comparable period, while net sales increased by 10 percent to $633.6 million from $575.7 million year-on-year.
“Our second quarter results fell short of our expectations and do not reflect the high standards we set for ourselves as an organization,” said AAON, Inc. (NASDAQ:AAON) CEO Matt Tobolski.
“The underperformance was primarily driven by poor operational execution, mainly associated with the implementation of our new ERP system at our Longview, [Texas] facility. The April go-live of the new system directly impacted production of both finished products and coils at Longview. Since Longview supplies coils to our Tulsa, [Oklahoma] facility, this also limited Tulsa’s expected production ramp. We are taking immediate and targeted actions to address these issues, strengthen execution, and ensure we are better positioned to deliver consistent results in the future,” he added.
3. DigitalOcean Holdings, Inc. (NYSE:DOCN)
DigitalOcean fell for a third straight day on Monday, losing 10.56 percent to close at $29.56 apiece following plans to raise $500 million from the issuance of convertible senior notes due 2030.
In a statement, DigitalOcean Holdings, Inc. (NYSE:DOCN) said the notes will be senior, unsecured obligations, will accrue interest payable semi-annually in arrears, and will mature on August 15, 2030, unless earlier converted, redeemed or repurchased. However, the notes will not be redeemable before August 15, 2028.
Noteholders will have the right to convert their notes to cash, its common shares, or a combination of both.
DigitalOcean Holdings, Inc. (NYSE:DOCN) also granted its initial buyers the option to purchase up to an additional $75 million within 13 days from the issuance date of the notes.
DigitalOcean Holdings, Inc. (NYSE:DOCN) said it plans to use the proceeds to pay the cost of the transaction, and the remainder to repurchase for cash a portion of its convertible senior notes due 2026.
The balance, if any, will be allocated for general corporate purposes.
2. C3.ai, Inc. (NYSE:AI)
C3.ai fell for a fourth straight day on Monday, slashing 25.58 percent to close at $16.47 apiece after its chief executive called the preliminary results of its first quarter of fiscal year 2026 performance “completely unacceptable.”
According to C3.ai, Inc. (NYSE:AI), it was targeting to report total revenues of $70.2 million to $70.4 million, and GAAP operational loss of $124.7 million to $124.9 million. Non-GAAP loss from operations was targeted at $57.7 million to $57.9 million.
Commenting on the results, C3.ai, Inc. (NYSE:AI) CEO Tom Siebel said the sales figures were “completely unacceptable,” and pointed to disruptions from a recent leadership reorganization, and his health contributing to the company’s poor performance.
Last month, C3.ai, Inc. (NYSE:AI) announced that it was searching for a new CEO after Siebel tendered his resignation due to health reasons, effective upon a successor assuming his post.
“After being diagnosed with an autoimmune disease in early 2025, I have experienced significant visual impairment,” he was quoted as saying last month.
“For C3 AI to reach its full potential—which I believe is spectacular—the board and I have initiated a search for a new CEO who can take the company to the next level of growth and success. I will remain fully engaged as Chief Executive Officer of C3.ai until such time as the C3.ai board appoints my successor, after which I will continue in the role of Executive Chairman, focusing on strategy, product innovation, strategic partner and customer relationships,” he noted.
1. monday.com Ltd. (NASDAQ:MNDY)
monday.com fell to a new all-time low on Monday as investors took path from an investment firm’s significant price downgrade for its stock.
At intra-day trading, the company fell to an all-time low of $173.2 before paring losses to end the day just down by 29.8 percent at $174.13.
In a market note, Needham & Company reduced its price target on monday.com Ltd. (NASDAQ:MNDY) by 37 percent to $250 from $400 previously. Still, the new price marks a 43-percent upside potential from its latest closing price.
Needham also maintained a “buy” recommendation for the stock.
According to the investment firm, the revision was based on monday.com Ltd.’s (NASDAQ:MNDY) second quarter earnings results which fell below expectations.
In its updated report, monday.com Ltd. (NASDAQ:MNDY) dropped its net income by 89 percent to $1.57 million from $14.3 million in the same period last year. Revenues, on the other hand, increased by 26.7 percent to $299 million from $236 million year-on-year.
For the third quarter, monday.com Ltd. (NASDAQ:MNDY) is targeting $311 million to $313 million in revenues, or a 24-percent year-on-year growth.
For the full year, revenues were targeted at $1.224 billion to $1.229 billion, higher than the $1.22 billion to $1.226 billion as projected previously.
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