In this photo illustration, former U.S. President Donald Trump’s archived Twitter account is shown on a phone screen with the Twitter logo in the background.
Sheldon Cooper | Lightrocket | Getty Images
A decade ago, Twitter’s future was looking bright. The company was benefiting from a flood of funding into the social-networking space, eventually leading to an IPO in 2013 that raised $1.8 billion.
Now the company is back in private hands. And they happen to be the hands of Elon Musk, the richest person in the world and one of the app’s most high-profile provocateurs.
It’s a massive moment. Twitter has become a key place for people to debate, joke and pontificate in their own circles of politics, sports, tech and finance. It’s also served as a platform that gives voice to the voiceless, helping protesters organize and express themselves in repressed regimes around the world.
In recent years, however, Twitter and social media rivals like Facebook have been at the center of controversy over the distribution of fake news and misinformation, sometimes leading to bullying and violence.
Investors had grown concerned about Twitter as a business. The company was generally unprofitable, struggled to keep pace with Google and Facebook, and often killed popular products with no real explanation.
What follows is a brief history of Twitter, which — despite its many flaws — is one of the most iconic companies to come out of Silicon Valley in the past 20 years.
2006
In March, Jack Dorsey, Noah Glass, Biz Stone, and Evan Williams created Twitter, which was originally a side project stemming from the podcasting tool Odeo. That month, Dorsey would send the first Tweet that read, “just setting up my twttr.”
2007
In July, Twitter received a $100,000 Series A funding round led by Union Square Ventures. The app’s popularity started to explode after being heavily promoted by the tech community during the annual South by Southwest conference.
2008
Dorsey stepped down as CEO in October, and was replaced by Williams. According to the book “Hatching Twitter” by journalist Nick Bilton, Twitter’s board fired Dorsey over concerns about the executive’s management style and public boastings.
2009
Twitter’s popularity continued to soar, leading to a high-profile appearance from Williams on Oprah Winfrey’s talk show alongside celebrity Ashton Kutcher. Kutcher would also write about Williams and Stone as part of Time Magazine’sTime 100 issue. Twitter was now a mainstream phenomenon.
2010
Twitter reached space, with NASA Astronaut Timothy Creamer sending the first tweet live from outer orbit. Behind the scenes, however, management woes continued with Williams stepping down as CEO, replaced by operating chief Dick Costolo.
2011
Twitter became an essential social media tool used during the Arab Spring, the wave of antigovernmental protests throughout Egypt, Libya and Tunisia. Protesters used the site to post reports and to organize. As the Pew Research Center noted, Twitter’s role in “disseminating breaking news” was not “not limited to the Arab uprisings – the death of Whitney Houston, for example, was announced on Twitter 55 minutes prior to the AP confirming the story.”
2012
Twitter’s reach expanded to 200 million active users. Barack Obama used the “platform to first declare victory publicly in the 2012 U.S. presidential election, with a Tweet that was viewed approximately 25 million times on our platform and widely distributed offline in print and broadcast media,” according to corporate filings.
2013
Twitter went public in November. The combined wealth of Williams, Dorsey, and Costolo hit roughly $4 billion.
“I think we’ve got a tremendous set of thoughts and strategies to increase the slope of the growth curve,” Costolo told CNBC at the time. “I would consider some of them tactics, some of them broader strategies, in service of doing what I referred to as bridge the gap between the massive awareness of Twitter and deep engagement of the platform.”
2014
Slowing user growth led to several stock drops and analyst downgrades. Twitter also deemed 2014 the year of the “selfie.”
2015
Compared to rivals like Google, Facebook, and even LinkedIn, Twitter was starting to look like the runt of the Internet litter. Twitter was still unprofitable as its ad business struggled mightily against its larger competitors. Dorsey would also return as CEO of the company, while still maintaining the top job at his other company, Square (now Block).
2016
Rumors began circulating that Twitter was looking to be acquired, with Salesforce as a potential suitor. Meanwhile, Twitter and Facebook were criticized for their role in letting prominent users like Donald Trump, who would win the U.S. presidential election that year, spread misleading information without consequence.
“Having the president-elect on our service using it as a direct line of communication allows everyone to see what is on his mind in the moment,” Dorsey said at the time. “We’re definitely entering a new world where everything is on the surface and we can all see that in real time and we can have conversations about it.”
2017
For a moment, Twitter appeared to be on the upswing. Its stock was finally trending upward as the company’s finances were improving. Meanwhile, Trump as president continued to use Twitter as his megaphone. According to Twitter’s own data, “Trump was the most-tweeted-about global leader in the world and in the United States” that year, CNBC reported.
2018
Dorsey and Facebook’s then-operating chief Sheryl Sandberg testified before the Senate Intelligence Committee about alleged interference by Russia-linked actors in the 2016 election. Trump and fellow Republicans became increasingly vocal about alleged political bias by Twitter and other social media sites.
“In fact, from a simple business perspective and to serve the public conversation, Twitter is incentivized to keep all voices on the platform,” Dorsey said at the time.
2019
Analysts found correlations between President Trump’s voracious use of Twitter and various markets, including gold, underscoring the cultural power of Twitter. Trump met with Dorsey — a Twitter spokesperson said “Jack had a constructive meeting with the President of the United States today at the president’s invitation.”
“They discussed Twitter’s commitment to protecting the health of the public conversation ahead of the 2020 U.S. elections and efforts underway to respond to the opioid crisis,” the spokesperson said.
2020
As Covid-19 spread across the globe, the spread of misinformation dominated the online conversation. And Twitter continued to struggle to grow its business. The service was also hacked that year, and miscreants gained access to over a dozen high-profile accounts, including those controlled by Joe Biden, Jeff Bezos, and Musk
2021
Twitter permanently banned Trump over inflammatory comments the president made during the U.S. Capitol riots in January that the company said could lead to “further incitement of violence.” Trump would allege that Twitter workers “coordinated with the Democrats and the Radical Left in removing my account from their platform, to silence me.” Later, Dorsey suddenly stepped down as CEO and was replaced by Parag Agrawal, the company’s chief technology officer.
2022
Musk took over Twitter after a protracted legal spat that would have culminated this week in a trial in Delaware’s Court of Chancery. The Tesla CEO agreed in April to pay $44 billion for Twitter, but then attempted to renege on the deal. He changed course and opted to proceed, walking into the company’s San Francisco office on Wednesday with what appeared to be a porcelain bathroom sink in his hands.
“Entering Twitter HQ – let that sink in!” he tweeted, with a video of his entrance.
Musk immediately began making changes, firing Agrawal, finance head Ned Segal, and head of legal policy Vijaya Gadde.
Lisa Su, chair and chief executive officer of Advanced Micro Devices Inc. (AMD), during a Bloomberg Television interview in San Francisco, California, US, on Monday, Oct. 6, 2025.
David Paul Morris | Bloomberg | Getty Images
AMD stock climbed 11% on Wednesday, continuing a massive run since OpenAI announced plans to buy billions of dollars of AI equipment from the chipmaker earlier this week.
On Monday, the ChatGPT maker entered into an agreement to potentially own 10% of AMD, based on its stock price and partnership milestones.
AMD now has a market cap of $380 billion after climbing 4% on Tuesday and 24% on Monday. Shares are up 43% so far this week, on pace for the best weekly gain since April 2016.
The partnership with OpenAI, which has historically been closely linked with Nvidia, has bolstered investor confidence that AMD will be a viable competitor to Nvidia in AI chips.
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AMD CEO Lisa Su told reporters on Monday that the deal was a “win-win” and that its AI chips were good enough to be used in “at-scale deployments,” or very large data centers like the kind OpenAI and cloud providers build.
Nvidia CEO Jensen Huang on Wednesday reacted to the deal on CNBC’s Squawk Box, saying it was “surprising.”
“It’s imaginative, it’s unique and surprising, considering they were so excited about their next-generation product,” Huang said. “I’m surprised that they would give away 10% of the company before they even built it. And so anyhow, it’s clever, I guess.”
Sundar Pichai, chief executive officer of Alphabet Inc., during the Bloomberg Tech conference in San Francisco, California, US, on Wednesday, June 4, 2025.
David Paul Morris | Bloomberg | Getty Images
Google is continuing to put restrictions on remote work, this time with a popular policy called “Work from Anywhere” that was established during the Covid pandemic.
The policy has allowed employees to work from a location outside of their main office for up to four weeks per calendar year. According to internal documents viewed by CNBC, working remotely for even a single day will now count for a full week.
“Whether you log 1 WFA day or 5 WFA days in a given standard work week, 1 WFA week will be deducted from your WFA weekly balance,” according to a document that was circulated over the summer, shortly before the change went into effect.
Google isn’t altering its current hybrid schedule, which was also put in place during the pandemic, allowing employees to work from home two days a week. WFA days are distinct from that policy, giving staffers the flexibility to work remotely, but not at home.
“WFA weeks cannot be used to work from home or nearby,” the document says.
Google didn’t immediately respond to request for comment.
Tech companies are increasingly forcing employees to spend more time in the office, with the peak of Covid now about five years in the past. Microsoft said last month that employees will be expected to work in an office three days a week starting next year, switching from a policy that allowed most of them to work from home 50% of the time or more with manager approval. Amazon went further, instructing corporate staffers to spend five days a week in the office.
Google began offering some U.S. full-time employees voluntary buyouts at the beginning of 2025, and has notified remote workers from several units their jobs would be considered for layoffs if they didn’t return to offices to work a hybrid schedule.
According to the latest changes, employees can’t work from a Google office in a separate state or country during their WFA time due to “legal and financial implications of cross border work.” If in a different location, employees may be required to work during the business hours that align with that time zone, the rules state.
The WFA update doesn’t apply to all Google staffers and may exclude data center workers, and those who are required to be in physical offices. Violations of the policy will result in disciplinary action or termination, the document says.
The issue came up at a recent all-hands meeting.
A top-rated question that was submitted on Google’s internal system described the update as “confusing.”
“Why does even one day of WFA count as a whole week, and can we reconsider the restriction on using WFA weeks to work from home?” the question said.
John Casey, Google’s vice president of performance and rewards, said at the meeting that WFA “was meant to meet Googlers where they were during the pandemic,” according to audio obtained by CNBC.
“The policy was always intended to be taken in increments of a week and not be used as a substitute for working from home in a regular hybrid work week,” Casey said.
Nvidia CEO Jensen Huang said Wednesday that his family’s immigration to the U.S. “would not have been possible” with the Trump administration’s current policy.
President Donald Trump announced in September that employers would have to pay a $100,000 fee for each H-1B visa, a temporary worker visa granted to foreign professionals with specialized skills.
Huang, who was born in Taiwan and later moved Thailand, immigrated to the U.S. at nine years old with his brother. His parents joined them around two years later.
“I don’t think that my family would have been able to afford the $100,000 and and so the opportunity for my, my family and for me to be here … would not have been possible,” Huang told CNBC’s “Squawk Box.”
Trump’s sudden price hike was a shock to the tech sector, which relies heavily on foreign talent, especially from India and China.
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Amazon was the top employer for H-1B holders in fiscal year 2025, sponsoring over 10,000 applicants according to U.S. Citizenship and Immigration Services. Tech juggernauts Microsoft, Meta, Apple, and Google were also among the top H-1B employers, with over 4,000 approvals each.
“Immigration is the foundation of the American dream,” Huang said, “this ideal that anyone can come to America and through hard work and some talent, be able to build a better future for yourself.”
Huang added that his own parents came to the U.S. so that his family could “enjoy the opportunities” and “this incredible country.”
The CEO confirmed that Nvidia, which currently sponsors 1,400 visas, would continue covering H-1B fees for immigrant employees. Huang said that he hopes to see some “enhancements” to the policy so that there’s “still some opportunities for serendipity to happen.”
While his own family’s journey would have been blocked by Trump’s immigration policy, Huang said Trump’s changes will still allow the U.S. “to continue to attract the world’s best talent.”
And other tech executives have expressed support for the changes, with Netflix‘s Reed Hastings calling the fee “a great solution” in a post on X.
“It will mean H1-B is used just for very high value jobs, which will mean no lottery needed, and more certainty for those jobs,” Hastings wrote.
In September, OpenAI CEO Sam Altman told CNBC’s Jon Fortt that he also backed Trump’s changes.
“We need to get the smartest people in the country, and streamlining that process and also sort of outlining financial incentives seems good to me,” Altman said.