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As thousands of homes started to burn across Los Angeles on Jan. 7, fire hydrants stopped working. The rapid spread of flames in winds up to 100 miles per hour was happening too quickly for water pumps to keep up. It shocked the system and those fleeing the flames.

“This area is known for having fire issues, so you would think that they would be prepared for this,” said Joan Zoloth, 70, who said she first moved to the area when she was 6 years old.

Zoloth’s childhood home burned down in the Palisades Fire. Her own home around the corner and her son’s home nearby were also lost. 

“My mother was a teacher,” Zoloth said. “What people don’t realize is how much Malibu is filled with those types of people — not just movie stars.”

The remains of Joan Zoloth’s childhood home in Malibu, California, shown on Jan. 21, 2025, after it burned down in the Palisades Fire.

Andrew Evers

CNBC went to the wreckage of the Palisades Fire to ask officials what happened to the water system in LA, and what other cities can do to be better prepared. As many as 1 in 6 Americans now live in areas with significant wildfire risk. 

“A firefight at this size, such an urban conflagration, any system is going to have its challenges in maintaining water pressure,” said State Fire Marshall Daniel Berlant, of the California Department of Forestry and Fire Protection, known as Cal Fire.

Water pressure was the primary problem, rather than a lack of supply, fire officials and water experts told CNBC. 

Much of the water in the Palisades is provided by three 1 million gallon tanks that sit up in the hills, using gravity to maintain water pressure in the hydrants and homes they supply below.

Pumps forcibly move water from main lines and surrounding reservoirs to those tanks. The tanks were full when the fires started, but the pumps couldn’t replenish water in the tanks as quickly as firefighters were using it below. As the tanks depleted, so did the water pressure, until some 20% of hydrants ran dry.

“The hydrants would have run dry anywhere in the world with a fire event like this in the topography where this occurred,” said Greg Pierce, director of the UCLA Human Right to Water Lab.

Joan Zoloth lost three family homes in Malibu during the Palisades fire. She’s shown here at a family friend’s house where she’s staying in Venice, California, on January 21, 2025.

Andrew Evers

The closure of a 117 million gallon reservoir nearby complicated matters. Earlier this month, California Gov. Gavin Newsom and LA city council members called for investigations into why the Santa Ynez Reservoir hadn’t yet reopened after being drained almost a year ago to repair a tear in its cover.

“That would have made a difference,” Pierce said. “But even, by all accounts, if that reservoir was full, it wouldn’t have stopped the fire.”

Typically, fires are also fought by aircraft dropping water and fire retardant from above, but high winds kept them grounded for several hours on the first night of the fire.

Firefighters adapted with three tactics. They shuttled water through multiple engines connected to functional hydrants, drove it to locations in large water tenders, and pumped water directly from backyard swimming pools.

The LA Department of Water and Power said it quadrupled the water flow to the area and summoned 15 water tankers to directly refill fire trucks. It wasn’t enough.

The blame game

As immediate danger calmed, misinformation ran wild. The Federal Emergency Management Agency, or FEMA, reactivated its rumor response site, and the LA Fire Department directly responded to inaccurate social media posts.

President Donald Trump, for instance, claimed that water ran out in LA because of policies meant to protect a small endangered fish called the Delta smelt.

“It’s just simply false. It’s nonsense,” said Peter Gleick, co-founder of the Pacific Institute, a global water think tank. Gleick has been researching water issues for four decades.

On his first day back in office, Trump signed an executive order titled “Putting People Over Fish: Stopping Radical Environmentalism to Provide Water to Southern California.” After visiting with Newsom in LA, Trump signed another executive order directing federal officials to find ways to override “disastrous” California water policies. 

“There’s lots of conversations about California water policy and how we allocate water to protect fish or ecosystems versus deliver water to different kinds of users, but that had no role whatsoever to play in water availability for firefighting,” Gleick said.

Southern California reservoirs are at above-average levels for this time of year because of two plentiful rainy seasons, he added.

“Misinformation about how if we just had more water from Northern California in Southern California, that would have made the difference, that’s not true,” UCLA’s Pierce said. “Even if you have water stored fairly close by in the region, you can’t just move it quickly up to an area like the Palisades.”

That’s why billionaires Lynda and Stewart Resnick are also not to blame for the Palisades Fire, the water experts who spoke with CNBC said. 

The Resnicks own the Wonderful Company, which includes brands such as Pom and Fiji Water, and have sprawling farmlands in the San Joaquin Valley that grow pistachios, oranges and pomegranates. They’ve been the subject of attacks on social media, some of which are antisemitic, that blame them for the water pressure problems in LA because of their investment in a public-private water bank that’s 100 miles north of LA and that has no ability to impact water pressure in the Palisades.

“There’s absolutely no connection between the two. This is a localized problem,” said Felicia Marcus, former chair of the California State Water Resources Control Board.

The fires also resurfaced criticism around state and local water decisions, from taking down dams to not building enough reservoirs.

The real culprit is extremely dry conditions, experts told CNBC. Before the fires, LA saw close to zero rain since May, and 2024 was the hottest year on record for the planet, Gleick said.

“Higher temperatures means more demand for water by soils and vegetation and people and agriculture,” he said. “Climate change is in many ways a water problem. It’s being manifested by drought and floods and wildfires.”

More resilient water systems

This is not the first time hydrants ran dry in a major firefight. They’re designed to handle one or two structure fires, not hundreds burning at the same time.

Similar water pressure problems plagued the 1991 Oakland Hills Fire, which destroyed more than 3,000 homes, and two Ventura County fires that each burned more than 1,000 homes in 2017 and 2018

The problem extends beyond California. Texas saw the largest fire in its history last February. As population booms, more people are moving to areas at high risk of fires between dense developments and wildland. 

California is home to the top six cities at highest wildfire risk in the U.S., but Texas, Colorado and Oregon also have cities in the top 15.

A firefighting helicopter draws water from the first-ever installed Heli-Hydrant to quickly stop the Blue Ridge Fire in Yorba Linda, California, on October 28, 2020.

Yorba Linda Water District

There are three key components to making water systems more resilient, Pierce said: increasing water supply, improving local infrastructure, and bolstering power.

After a 2008 fire that destroyed 280 homes, Yorba Linda Water District in California addressed all three. It added backup generators at water pump stations that had failed during the fire, added a long-planned underground reservoir, and installed a first-of-its-kind water tank called a Heli-Hydrant.

That $70,000 tank can automatically refill itself and is reserved for helicopters to dip from, reducing the length of flight times between water pickups and drops. It was used to quickly stop the Blue Ridge Fire in 2020.

“Cal Fire was able to jump on it and use our Heli-Hydrant, trigger it and keep the fire to five acres,” said John DeCriscio, who was operations manager at the Yorba Linda Water District at the time. “That was a huge success.”

San Francisco implemented a comprehensive solution after the city was almost completely destroyed in the 1906 earthquake and resulting fire, which also caused most hydrants to run dry. 

In 1913, the city developed a unique fire-suppression water system separate from the rest of the city’s water. Seawater enters the system from 52 suction connections along the waterfront, and it’s pumped in from fireboats and two high-pressure pumping stations. There are more than 200 underground cisterns to store backup water. A high-elevation reservoir and two large-capacity tanks use gravity, not pumps, to feed special high-pressure emergency hydrants that can be seen around the city with black, red and blue tops.

There are other solutions that cities can implement.

A company called Rain is working on autonomous, unmanned aircraft for dropping water on fires. In Japan, an autonomous system of water cannons protects a cultural heritage site with 200-year-old thatched roof houses.

Cost is the main reason these solutions haven’t been implemented widely. 

“There’s always this delicate balance of being afraid to go to your customers and raise their rates, but if you don’t raise their rates, you can’t do these extra things,” said Marcus, the former state water board chair. “It’s the kind of thing that keeps you up at night when you manage one of these agencies.”

How firefighting planes and helicopters are battling the LA Fires

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CoreWeave is the first cloud provider to deploy Nvidia’s latest AI chips

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CoreWeave is the first cloud provider to deploy Nvidia's latest AI chips

Nvidia CEO Jensen Huang in Taipei, Taiwan, on June 2, 2024.

Ann Wang | Reuters

Nvidia’s Blackwell Ultra chips, the company’s next-generation graphics processor for artificial intelligence, have been commercially deployed at CoreWeave, the companies announced on Thursday.

CoreWeave has received shipments of Dell-built shipments based around Nvidia’s GB300 NVL72 AI systems, Dell said on Thursday. It’s the first cloud provider to install systems based around Blackwell Ultra.

The Blackwell Ultra is Nvidia’s latest chip, expected to ship in volume during the rest of the year. The systems that CoreWeave is installing are liquid-cooled and include 72 Blackwell Ultra GPUs and 36 Nvidia Grace CPUs. The systems are assembled and tested in the U.S., Dell said.

CoreWeave shares rose 6% during trading on Thursday, Dell shares were up about 2% and Nvidia rose less than 2%.

The announcement is a milestone for Nvidia.

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AI developers still clamor for the latest Nvidia chips, which have improvements that make them better for training and deploying models.

Nvidia said Blackwell Ultra can produce 50 times more AI content than its predecessor, Blackwell.

Investors closely watch how Nvidia manages the transition when it announces new AI chips to see if there are production issues or delays. Nvidia CFO Colette Kress said in May that Blackwell Ultra shipments would start in the current quarter.

It’s also a win for CoreWeave, a cloud provider that rents access to Nvidia GPUs to other clouds and AI developers. Although CoreWeave is smaller than the cloud services operated by Amazon, Google, and Microsoft, its ability to offer Nvidia’s latest chips first give it a way to differentiate itself.

CoreWeave historically has a close relationship with Nvidia, which owns a stake in the cloud provider. CoreWeave went public earlier this year, and the stock price has quadrupled since its IPO.

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IPO market gets boost from Circle’s 500% surge, sparking optimism that drought may be ending

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IPO market gets boost from Circle's 500% surge, sparking optimism that drought may be ending

Jeremy Allaire, CEO and co-founder of Circle Internet Group, the issuer of one of the world’s biggest stablecoins, and Circle Internet Group co-founder Sean Neville react as they ring the opening bell, on the day of the company’s IPO, in New York City, U.S., June 5, 2025.

NYSE

For over three years, venture capital firms have been waiting for this moment.

Tech IPOs came to a virtual standstill in early 2022 due to soaring inflation and rising interest rates, while big acquisitions were mostly off the table as increased regulatory scrutiny in the U.S. and Europe turned away potential buyers.

Though it’s too soon to say those days are entirely in the past, the first half of 2025 showed signs of momentum, with June in particular producing much-needed returns for Silicon Valley’s startup financiers. In all, there were five tech IPOs last month, accelerating from a monthly average of two since January, according to data from CB Insights.

Highlighting that group was crypto company Circle, which more than doubled in its New York Stock Exchange debut on June 5, and is now up sixfold from its IPO price for a market cap of $42 billion. The stock got a big boost in mid-June after the Senate passed the GENIUS Act, which would establish a federal framework for U.S. dollar-pegged stablecoins.

Venture firms General Catalyst, Breyer Capital and Accel now own a combined $8 billion worth of Circle stock even after selling a fraction of their holdings in the offering. Silicon Valley stalwarts Greylock, Kleiner Perkins and Sequoia Capital are set to soon profit from Figma’s IPO, after the design software vendor filed its public prospectus on Tuesday. Since its $20 billion acquisition agreement with Adobe was scrapped in late 2023, Figma has been one of the most hotly anticipated IPOs in startup land.

It’s “refreshing and something that we’ve been waiting for for a long time,” said Eric Hippeau, managing partner at early-stage venture firm Lerer Hippeau, regarding the exit environment. “I’m not sure that we are confident that this can be a sustained trend yet, but it’s been very encouraging.”

Another positive sign for the industry the past couple months was the performance of artificial infrastructure provider CoreWeave, which went public in late March. The stock was relatively stagnant for its first month on the market but shot up 170% in May and another 47% in June.

The IPO market is coming back, but it won't be linear, says Lazard CEO Peter Orszag

For venture firms, long considered the lifeblood of risky tech startups, IPOs are essential in order to generate profits for the university endowments, foundations and pension funds that allocate a portion of their capital to the asset class. Without handsome returns, there’s little incentive for limited partners to put money into future funds.

After a record year in 2021, which saw 155 U.S. venture-backed IPOs raise $60.4 billion, according to data from University of Florida finance professor Jay Ritter, every year since has been relatively dismal. There were 13 such offerings in 2022, followed by 18 in 2023 and 30 last year, collectively raising $13.3 billion, Ritter’s data shows.

The slowdown followed the Federal Reserve’s aggressive rate-hiking campaign in 2022, meant to slow crippling inflation. As the lower-growth environment extended into years two and three, venture firms faced increasing pressure to return cash to investors.

‘Backlog of liquidity’

In its 2024 yearbook, the National Venture Capital Association said that even with a 34% increase in U.S. VC exit value last year to $98 billion, that number is 87% below the 2021 peak and less than half the average for the four years from 2017 through 2020. It’s a troubling dynamic for the 58,000 venture-backed companies that have raised a total of $947 billion from investors, according to the annual report, which is produced by the NVCA and PitchBook.

“This backlog of liquidity drought risks creating a ‘zombie company’ cohort — businesses generating operational cash flow but lacking credible exit prospects,” the report said.

Other than Circle, the latest crop of IPOs mostly consists of smaller and lesser-known brands. Health-tech companies Hinge Health and Omada Health are valued at about $3.5 billion and $1 billion, respectively. Etoro, an online trading platform, has a market cap of just over $5 billion. Online banking provider Chime Financial has a higher profile due largely to a years-long marketing blitz and is valued at close to $11.5 billion.

Meanwhile, the highest valued private companies like SpaceX, Stripe and Databricks remain on the sidelines, and AI highfliers OpenAI and Anthropic continue to raise massive amounts of cash with no intention of going public anytime soon.

Still, venture capitalists told CNBC that there are plenty of companies with the financial metrics to be public, and that more of them are readying for the process.

“The IPO market is starting to open and the VC world is cautiously optimistic,” said Rick Heitzmann, a partner at venture firm FirstMark in New York. “We are preparing companies for the next wave of public offerings.”

There are other ways to make money in the meantime. Secondary sales, a process that involves selling private shares to new investors, are on the rise, allowing early employees and investors to get some liquidity.

And then there’s what Mark Zuckerberg is doing, as he tries to position his company at the center of AI innovation and development.

Mark Zuckerberg, chief executive officer of Meta Platforms Inc., during the Meta Connect event on Wednesday, Sept. 25, 2024.

Bloomberg | Bloomberg | Getty Images

Last month, Meta announced a $14 billion bet on Scale AI, taking a 49% stake in the AI startup in exchange for poaching founder Alexandr Wang and a small group of his top engineers. The deal effectively bought out half of the stock owned by investors, leaving them with the opportunity to make money on the rest of their holdings, should a future acquisition or IPO take place.

The deal is a big win for Accel, which led Scale AI’s Series A round in 2017, and is poised to earn more than $2.5 billion in the transaction. Index Ventures led the Series B in 2018, and Peter Thiel’s Founders Fund led the Series C the following year at a valuation of over $1 billion.

Investors now hope the Federal Reserve will move toward a rate-cutting campaign, though the central bank hasn’t committed to one. There’s also ongoing optimism that regulators will make going public less burdensome. Last week, Reuters reported, citing sources familiar with the matter, that U.S. stock exchanges and the SEC have discussed loosening regulations to make IPOs more enticing.

Mike Bellin, who heads consulting firm PwC’s U.S. IPO practice, said he anticipates a diversity of IPOs across sectors in the second half of the year. According to data from PwC, pharma and fintech were among the most active sectors for deals through the end of May.

While the recent trend in IPO activity is an encouraging sign for investors, potential roadblocks remain.

Tariffs and geopolitical uncertainty delayed IPO plans from companies including Klarna and StubHub in April. Neither has provided an update on when they plan to debut.

FirstMark’s Heitzmann said the path forward is “not at all clear,” adding that he wants to see a strong quarter of economic stability and growth before confidently saying that the market is wide open.

Additionally, other than CoreWeave and Circle, recent tech IPOs haven’t had big pops. Hinge Health, Chime and eToro have seen relatively modest gains from their offer price, while Omada Health is down.

But virtually any activity beats what VCs were experiencing the last few years. Overall, Hippeau said recent IPO trends are generally encouraging.

“There’s starting to be kind of light at the end of the tunnel,” Hippeau said.

WATCH: Uptick in VC-backed startup deals

Uptick in VC-backed startup deals

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Tripadvisor stock surges 17% as Starboard Value builds sizable stake in online travel company

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Tripadvisor stock surges 17% as Starboard Value builds sizable stake in online travel company

The Tripadvisor logo is displayed on a tablet.

Mateusz Slodkowski | Sopa Images | Lightrocket | Getty Images

Tripadvisor stock jumped 17% Thursday after Starboard Value revealed a more than 9% stake in the online travel company, according to a securities filing.

The position was valued at about $160 million as of Wednesday’s close.

Tripadvisor shares have been flat since the start of the year after plummeting more than 30% in 2024. Last year, the travel review and booking company said it created a special committee to explore potential options.

Read more CNBC tech news

Starboard Value has gained a reputation for pushing for changes such as new CEOs and cost cuts by acquiring significant shares in companies.

Most recently, the firm settled a proxy fight with Autodesk, where it gained two board seats. It has previously pushed for changes at Tinder parent Match Group, pharmaceutical giant Pfizer and Salesforce.

The Wall Street Journal was the first to report the news late Wednesday.

Tripadvisor did not immediately respond to CNBC’s request for comment. Starboard declined to comment on the news.

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