The Word She Didn't Mean to Keep
She wasn't trying to coin a term. She was trying to understand why so few startups actually made it. In 2013, Aileen Lee sat down and sorted through 60,000 software and internet companies that had received venture backing between 2003 and 2013. Of those, exactly 39 reached a $1 billion valuation. She needed a word for them - something that captured both their rarity and the almost implausible alchemy of their existence.
She landed on unicorn. "I wanted to convey rarity and alchemy," she would later explain. "It all read so much better." She was mid-launch of her own seed fund, Cowboy Ventures. The TechCrunch article was basically her debut in public as a solo investor. She was thinking about data, not dictionary entries.
The word took over Silicon Valley faster than any of the companies she'd catalogued. Within a year, every pitch deck, every analyst note, every breathless tech journalist was using "unicorn" as shorthand for startup success. By 2023, the count had swelled from 39 to more than 1,200 worldwide. Lee herself calls the explosion "kind of wild" - and has since been busy naming the failures too. "Unicorpse." "Zombiecorn." She's still doing the analysis, still being precise about what the numbers actually say.
Thirteen Years, Then One Bold Exit
Before there was Cowboy Ventures, there were thirteen years at Kleiner Perkins - one of the most storied VC firms on Sand Hill Road. Lee joined KPCB in 1999, right in the middle of the first dot-com wave, and stayed through the crash, the recovery, and the next wave. She wasn't just writing checks. She was on the ground with companies: she was the founding CEO of RMG Networks, a digital media company backed by the firm. She sat on boards. She watched companies grow from Series A all the way to IPO - Bloom Energy, Rent the Runway, Trendyol (later acquired by Alibaba).
She left in 2012. Not in frustration, not in scandal - just with conviction. She wanted to be further upstream than Series A. She wanted to back founders before the product existed, when the bet was entirely on the person. She wanted a smaller fund that could move faster and take positions that a multi-billion-dollar firm couldn't.
Cowboy Ventures was purpose-built for one thing: backing exceptional founders at the seed stage, before most institutional capital was paying attention. Lee's sweet spot - $500K to $800K early checks - was deliberately un-glamorous. No unicorn hunting. No late-stage momentum plays. Just early conviction and a long timeline.
Cowboy Country
The portfolio Lee has assembled at Cowboy Ventures doesn't look like a bet on sectors - it looks like a bet on people. Dollar Shave Club (acquired by Unilever for $1 billion). Chime, the neobank that made fintech accessible to millions. Product Hunt, which became the central nervous system of the startup community. Guild, rethinking education and workforce mobility. Philz Coffee, where the tech isn't in the cup but in the cult around it. Homebase for the hourly workforce. Ironclad for legal contracts. DocSend for every founder pitching investors.
The pattern is consistent: large markets, founder-market fit that goes beyond resume, and software that's changing something fundamental about how work or personal life operates - what Lee calls "Life 2.0." She invests roughly once a month. Sixty-plus active and exited companies since inception. The fund has grown to a third raise of $95 million.
Approximate portfolio sector exposure across Cowboy Ventures' active investments
The Email That Started a Movement
In 2018, Lee sent an email. Not a memo, not a proposal - just an email to roughly thirty women in venture capital. The gist: the numbers on female investors and female-founded companies are bad, they've been bad for a long time, and doing nothing about it isn't a neutral act.
That email became All Raise, a nonprofit co-founded by Lee that has grown into one of the most active advocacy organizations for women in tech. The premise is both moral and economic: diverse investors back more diverse founders, and that produces a more accurate picture of who builds things and who buys them. Lee is characteristically direct about the stakes. "It's not fair that boys control more of the economy than girls. It's not right."
Before the Venture Partner Badge
The origin story matters here. Lee was born to Chinese immigrants, raised in Millburn, New Jersey - a suburb that isn't Silicon Valley in any cultural sense. She was senior class president in 1988. She went to MIT for undergrad, spent two years as a financial analyst at Morgan Stanley, worked at Gap Inc., and then went to Harvard Business School before landing at Kleiner Perkins in 1999.
The entrepreneur instinct, though? That started earlier. As a kid, she ran two businesses: "Buy or Dye" (tie-dye shirts) and "Wok Out" (egg rolls). Whether those ventures were profitable is lost to history. The pattern holds.
The Reckoning She Predicted
In January 2024, Lee published the follow-up to her original unicorn analysis - this time looking at what happened to the companies she'd flagged ten years earlier. The findings were sobering without being surprised. Around 40% of unicorns were trading below $1 billion in secondary markets. Many had become "zombiecorns" - still generating revenue but unable to raise or exit at previous valuations. Some had become outright "unicorpses."
Lee isn't gloating. She's tracking. "It's kind of cute and funny," she told Fortune, "but this is also people's careers. It's not funny when you lose your job." She is the kind of investor who holds both the data and the humanity of what the data represents.
Today she's watching the AI wave with characteristic precision: tracking which companies are AI-native versus AI-washed, staying seed-stage, staying patient. The term she coined is everywhere. The discipline behind it - sorting signal from noise in 60,000 companies - is still what she does every day.