
The Inquisitive VC · 25 min
Key moments - from our scoring
Substance score
38 / 100
Five dimensions, 20 points each
FJ Labs operates a fundamentally different venture model than traditional funds, deploying capital across 300-500 investments annually rather than concentrating bets - an approach Weinstein argues is mathematically optimal given the firm's pattern-matching expertise from co-founders Fabrice Grinda and Jose Neves. Both built and scaled massive marketplaces (OLX, Mercado Libre) and understand network effects deeply. The marketplace thesis centers on the powerful flywheel that emerges once liquidity kicks in: more supply attracts demand, which attracts more supply, creating defensible moat-like dynamics. But bootstrapping liquidity remains the core challenge - marketplaces like Uber must build city-by-city, while platforms like Upwork work globally. In crypto, Weinstein sees the marketplace dynamics amplified through tokenization and incentive alignment. FJ Labs has invested in 30+ crypto projects spanning infrastructure (MoonPay, Figment, Clipper), exchanges, and DeFi consumerization. Their investment thesis applies directly: network effects, token economics, and founder-market fit can be pattern-matched in 45-minute calls because they rely on institutional VCs to lead, take board seats, and conduct diligence. LPs back Fabrice, Jose, and the heuristics they've proven over decades. The firm also incubates occasional companies like Mundi (trade factoring for Mexican exporters), where Weinstein takes board roles.
FJ Labs makes 300-500 investments per year rather than concentrated bets, relies on institutional co-investors to lead and conduct diligence, writes small tickets that unlock access to their global network, and can make investment decisions in one to two phone calls using pattern-matching heuristics from 700+ marketplace investments.
Bootstrapping liquidity and ensuring supply and demand overlap - either on a hyper-local basis (like Uber city-by-city), a local basis, or an international basis (like Upwork) - while identifying which side is supply-constrained versus demand-constrained and optimizing retention and acquisition metrics accordingly.
Crypto amplifies traditional marketplace network effects through tokenization and token economics; FJ Labs has invested in 30+ crypto projects across infrastructure (on-ramps like MoonPay, staking via Figment), exchanges (including decentralized exchanges like Clipper), and DeFi consumerization to make complex protocols accessible to non-expert users.
They rely on the Pareto principle - gleaning 80% of needed information from the 20% that matters - and pattern-match based on founder quality, business model, metrics, and capital efficiency, trusting that institutional co-investors lead rounds and conduct full diligence before FJ Labs writes their smaller check.
Mundi is a trade factoring platform lending to Mexican exporters selling into the US; FJ Labs incubated it by funding entrepreneurial MBAs and assembling the founding team, and it has since grown 50-100x in a year and a half and raised a $16 million Series A from Union Square Ventures.
Our reviewer’s read on each dimension, with quotes from the episode.
There are a handful of useful marketplace mechanics discussed (hyper-local vs. international liquidity, identifying which side of the marketplace is harder to recruit, token economics amplifying network effects) but the episode is padded heavily with career backstory, VC-entry advice, a running hobby segment, and basic Uber/Airbnb examples most listeners already know.
Most marketplaces, it's usually harder to recruit one side of the marketplace. And so that should be your focus.
the pattern-matching recognition that we've developed from investing in 700 startups, the majority of which are marketplaces, we're able to suss out into 45-minute phone calls
The marketplace content is Marketplace 101 - chicken-and-egg, flywheel, network effects - and the crypto section repackages well-worn DeFi consumerization and NFT utility narratives without a single contrarian or first-principles argument. Nothing here would surprise a reasonably informed B2B operator.
Essentially a marketplace is a two-sided marketplace. You have supply and demand. Imagine Uber, you have drivers and you have riders.
Some of the yields that you can earn in DeFi are staggering especially compared to the near zero interest rates that you seeing in traditional finance
Jeff is a legitimate practitioner at a well-regarded, high-volume fund with a real track record across 700+ investments, giving him genuine pattern-matching credibility. However, he is not a founder who has built and scaled a marketplace, he joined FJ Labs from an IR/fundraising role rather than as an operator, and he is not the most senior principal at the firm.
I wasn't an investor myself, but I was able to join all of our investment committee meetings
I joined in 2017, and it's been a great trip ever since
The episode has some genuine specifics - fund 2 at 500 investments, Mundi's $16M Series A led by Union Square Ventures, OLX at 300M monthly unique users sold to NASPERS, named portfolio companies like MoonPay, Figment, and Clipper - but the crypto section is largely vague and the marketplace pitfall discussion stays abstract without concrete failure data or metrics.
Our first institutional fund had about 112 investments. Our second had 500 investments.
they just raised a $16 million series A led by Union Square Ventures
The host's questions are uniformly generic and sequential - each one broadly opens a new topic without probing, challenging, or following up on any claim the guest makes. The episode ends with a 'secret obsession' question and a portfolio plug, and there is no instance of productive disagreement or pressure on any assertion.
What have you seen, I guess, are the biggest pitfalls a few of the businesses you've invested in kind of encounter when they're bootstrapping that liquidity onto the platform?
What's a secret obsession of yours that not many people know about?
Computed from the transcript - who did the talking, and the words that came up most.
Jeff Weinstein is a Partner at FJ Labs , a global marketplace investor also investing in crypto and Web3. Jeff was previously a Senior Associate at Lux Capital. We talk about his entry into VC, the FJ Labs thesis, why they are investing in crypto, problems marketplaces face and more! Check out the Substack for a full transcript of the episode, with links and images! Intro & Outro soundtrack from -
Transcribed and scored by The B2B Podcast Index.
Welcome to the Inquisitive VC. Today I'm speaking to Jeff Weinstein. Jeff is a partner at FJ Labs, a global marketplace investor also investing in crypto and web3. Jeff was previously a senior associate at Lux Capital.
We talk about his entry into VC, the FJ Labs thesis, why they are investing in crypto, problems marketplaces face, and more. I hope you enjoy this episode. So I would love to start with how you got into the world of venture capital personally. Sure.
So a little bit about myself. I grew up in New York. I attended University of Pennsylvania where I studied PPE, politics, philosophy, and economics. I have always been interested in technology.
I went to computer camp growing up. I used to build computers. And I've always been interested in business. My dad worked in finance.
I always loved investing. My heroes growing up were, instead of the quintessential NBA player or musicians, amazing investors. And so it's but in spite of that, I didn't know what venture capital was until long and long after I graduated college. Actually, I didn't know that there was such a profession, I think, probably because I grew up in New York.
And back in 2011, venture was still a developing ecosystem in New York City. And it was relatively confined to the Bay Area. So in 2011, after I graduated school, I joined a small fund of hedge funds where I was working on marketing investor relations. And I was there for two years, and the fund actually went under.
Hedge funds had a really brutal couple of years from 2011 to 2013, and fund of funds are hedge funds with another layer of fees. So it was extremely brutal. and in the end of 2013, my fund started to go under. And so I ended up finding an up-and-coming firm in New York called Lux Capital.
Lux is a bit more well-known now, but at the time they had just closed on their fund too. And they were looking for someone with my skillset of fundraising and investor relations and alternatives. And so I joined them in 2013, and I worked there for four years. And I fell in love with the venture industry.
I wasn't an investor myself, but I was able to join all of our investment committee meetings. And I was able to see how some of the best investors in the world thought about a company's prospects, what they looked for in founders. And it was really an incredible chance to learn from some of the best. And so I was at Lux for four years.
At that time, I knew I wanted to be an investor. And the typical Lux investor had a terminal degree in the hard sciences and went investing in deep tech. That was not my background. And so I started thinking about next steps.
I got recruited over to FJ Labs, who was looking for someone who had the ability to be a strong investor with a strong financial background, but someone who also could help them raise outside capital. And one thing led to another, and I joined in 2017, and it's been a great trip ever since. Love that. Yeah, I definitely know of Lux.
I have a background in biomedical science, and I've been really interested in the deep tech side. And Lux is probably one of those premier funds leading it on that cutting edge. That's right. It was an honor to learn under Josh.
Peter and Adam, and see some of the most amazing companies in the world. No doubt. Could you elaborate on FJ Labs and the marketplace, I guess, thesis of FJ Labs and why that is the current focus? Sure.
So one of the things, so quick background on FJ Labs, and then I can talk about why the marketplace business model is so intriguing. We were founded by two serial entrepreneurs, Fabrice Grinda, originally French. He has built and sold three businesses. His first startup was an online auction site for France called Auckland.
He raised money from Bernard Arnault, who's the founder of LVMH, and a bunch of other investors. He sold that. Then he built the world's leading online ringtone and wallpaper business for cell phones, sold that. And then last but not least, he built one of the world's leading online classified sites.
So in the US, we have a business called Craigslist. He built Craigslist for emerging market countries, launched in over 40 different markets, grew it to over 300 million monthly unique users, and sold that to NASPERS in 2010 and stayed on as CEO until 2013. Jose built an online auction site for Latin America, which ended up merging with Mercado Libre, which is now far and away the largest tech company in Latin America. So the two of them have deep expertise in building and scaling online marketplaces.
Now, online marketplaces are a really interesting business model because although they're very hard to get off the ground, once you can get the business, the flywheel really spinning, it becomes the network effects in a marketplace become extremely powerful. So you might've heard of the chicken and the egg problem. Essentially a marketplace is a two-sided marketplace. You have supply and demand.
Imagine Uber, you have drivers and you have riders. And if no one wants the Uber app itself, there's not much technological innovation there. What you have is you basically have a marketplace that is facilitating the connection between drivers and riders. So no one really wants to use the Uber app if there are no drivers or riders So it very difficult to jumpstart a marketplace because you need to get drivers in order to get riders You need to get riders in order to get drivers Now once you able to start to build liquidity, which is basically the density of connections on the marketplace, it really kicks off because the more drivers on the platform, the better experience it is for riders, which then in turn attracts more riders.
The more riders on the platform, the more business you're driving to drivers. And so this kicks off this feedback loop, and you can create some of the most scalable business models in the world. And if you look at US IPOs recently, four of the five largest IPOs in the US, tech IPOs were marketplaces. So DoorDash, Airbnb, Uber, Lyft, all have in common that their marketplaces.
And so it's a beautiful business model when done right. And there's no tech risk and there's purely execution risk. Got it. Yeah, that's definitely really interesting because it seems like a hard business model to get going.
What have you seen, I guess, are the biggest pitfalls a few of the businesses you've invested in kind of encounter when they're bootstrapping that liquidity onto the platform? frankly, bootstrapping liquidity is the key challenge for a marketplace and making sure that the supply and the demand are overlapping because depending on the marketplace, your liquidity, you might have to build liquidity on a hyper-local basis. So in Uber, you actually have to build liquidity market by market.
If you have drivers in New York and you riders in San Francisco, you don't have a market. So Uber is an example where you have to go scale city by city. On the other hand, sometimes you have international marketplaces where you might have something like Upwork, where you need someone to help you with your website. They could be anywhere in the world.
They could be in Romania. They could be working on your website while you're in New York. So the supply and the demand don't have to overlap in the same city. So marketplace design is very important to think about when you're scaling a marketplace.
What are the unique traits for your marketplace? And what do you have to do to facilitate the flywheel spinning? Are you building liquidity on a hyper-local basis, on a local basis, potentially on an international basis? What are your acquisition channels?
Is your marketplace supply constrained or demand constrained. Most marketplaces, it's usually harder to recruit one side of the marketplace. And so that should be your focus. And how are you recruiting that?
And then not only that, how are you retaining that? What are your key metrics? Every marketplace has different metrics that matter. You have to distill which ones matter and think about how you can optimize them.
For sure. I think that's super helpful. I would love to hear, I guess, what the strategy and thinking around investing in the crypto market is then for you and FJ Labs? Crypto is interesting because a lot of the marketplace dynamics that you see with traditional internet marketplaces are amplified in crypto because now you have the ability to incentivize people using tokens.
So the network effects work to the extreme in crypto. And that's why you're seeing almost every crypto project has some form of network effects, but it's not necessarily the traditional network effects that you see. Because the tokenization, the element of having a token to coordinate incentives really changes the game. And there are all sorts of interesting things you can do with token economics to coordinate human behavior.
And so we think that crypto is extremely interesting. we think that there are i mean we've invested in 30 plus different crypto projects already and we and and the different themes that interest me at the moment we're very interested in infrastructure we think that laying the the quote-unquote pipes of crypto it's still very early days and and it's still extremely cumbersome for normal users much it's akin to to using the internet in the early days or even pre the web browser.
You can see, I mean, if you just look at MetaMask, MetaMask has kind of become the gateway to blockchain apps. Even MetaMask, it's still extremely cumbersome to see investing in a lot of different crypto infrastructure plays. We invest in on-ramps and off-ramps. So we're investors in MoonPay.
We're investors in Wire. We're looking at a number of other companies in the space. Then we're investing in staking companies. We receive investors in Figment, which is helping investors who have proof of stake coins like Ethereum now stake their Ethereum for rewards.
And so we're very interested in other forms of crypto infrastructure. Then we're also interested in exchanges, exchanges or marketplaces. So we're investing in centralized and decentralized exchanges all around the world. One of our entrepreneurs in residence built a decentralized exchange called Clipper, which is actually the, it's a decentralized exchange intended for small trades.
because often if you use a Uniswap or a SushiSwap, you're not getting the optimal price if you're making a trade of $10,000 or less. So Clipper has intentionally constrained the size of their liquidity pool so that if you're making small trades, you're still getting the best prices. And so we're also interested in the consumerization of DeFi. As complicated as crypto is for normal people, DeFi or decentralized finance is a whole nother level.
It like a foreign language to people but there are a lot of really interesting a lot of really interesting use cases for people And some of the yields that you can earn in DeFi are staggering especially compared to the near zero interest rates that you seeing in traditional finance So we're looking at a lot of different ways to put a beautiful user interface on top of a DeFi project and make it really easy for normal people to use. So I call that consumerization of DeFi, consumerization of crypto.
And then we're really interested in NFTs and not only just the art of NFTs, but also potentially utility NFTs. The concept of having a non-fungible token that you could use for identity, you could be using it for advertising. I think we don't really know yet what a lot of the killer use cases are going to be. So we're interested in doing a bunch of experiments to make sure we're investing all over.
Yeah, I love that. So you'll be essentially investing across the entire crypto sector. How was, I guess, the conversation you had with LPs when talking to them about entering the crypto market? The truth is that our LPs, it's actually worth noting one thing.
We are angel investors. We don't lead. We don't take board seats. We have a very diversified portfolio, much more so than the typical venture fund.
We have hundreds of investments that we make a year. Our first institutional fund had about 112 investments. Our second had 500 investments. Our third will probably have around 500 investments as well.
That's very unusual for venture capital. We think it's mathematically optimal. our lps are interested in backing fabrice jose and the institution that we've built at fj labs they've proven to be some of the most successful angel investors in the world and a bet on fj labs is a is a bet on us a bet on our heuristics a bet on our ability to to work with some of the most interesting up-and-coming tech talent all around the world crypto was a natural next place for us to invest. So it never was really a question from our LPs about investing in crypto.
Okay. No, that's great to hear. And that's given me like two areas I want to pick on. And that is firstly, you know, with crypto venture capital becoming, you know, very competitive to get into these rounds, they're moving incredibly quick.
Why do crypto founders choose to go with FJ Labs as an investor? It's a great question. What we have found is that a lot of the network effects expertise and the marketplace expertise that we have from building and investing in startups is directly applicable to crypto. And when you're thinking through network effects, token economics, these are all network effects.
Rather, these are all highly applicable. In terms of how we invest, we're able to make decisions in one to two phone calls. We're easy to work with. We write small tickets, but for that small ticket, you unlock the entire FJ Labs network.
And we have relationships with almost every fund in the world. It sounds like an exaggeration, but it's true. Every fund, I should say every institutional fund. There are plenty of small funds out there that we may not know, but if you're doing well and you're raising your next round, we will roll out the red carpet to introduce you as a founder to the best of the best funds.
And we only do this for companies that are doing well. So it's a warm intro, and that warm intro has a very, very high conversion rate. And so in sum, we have deep marketplace and network effects expertise. we have the world's largest portfolio of online marketplaces we are easy to work with we write small tickets we decide quickly and we can help you get funded perfect okay yeah that definitely makes a lot of sense and i guess the other part of that was you know as you said doing over 100 deals yeah um what's the process that you employ in order to you know achieve that kind of of fast-paced deal-making strategy that you employ?
The pattern-matching recognition that we've developed from investing in 700 startups, the majority of which are marketplaces, we're able to suss out into 45-minute phone calls. I'm not sure if you've ever heard of the Pareto principle, but the Pareto principle is that 20%. You can basically glean 80% of the information that you need from the 20% that matters. And this applies across all sorts of different fields.
And so we feel that if you, the key here is that we don't lead. We don't lead. We rely on an institutional VC fund to take the lead position, usually to take a board seat, to set the terms, to do proper diligence. So if we know that a fund that we like and we respect and we trust is leading, they're doing the diligence, they're taking a board seat, they're setting the price.
From there, we can quickly evaluate if we like the founder, if we like the business model, if we like the metrics, the capital efficiency, and we can make a quick decision. And so we can pattern match based on all of the marketplace heuristics that we have seen. And so it makes it easy for us to very quickly make decisions. Got it.
What would be your advice to someone who's looking to get into the world of venture capital? There's no one answer. There are a bunch of different ways you can get in. You'll see journalists.
Frankly, venture capital is often a relationship-driven business. That why you see a lot of journalists who have incredible founder You can see them break in You can also see people who are just extremely analytical and build a personal brand for themselves There's a guy on Twitter, Turner Novak. He just basically memed himself into being a GP and raising money for a fund. It's funny, but frankly, it's an edge.
Being a meme king on Twitter is an edge. I think the best way is to be a founder is to is to be a successful founder is to build deep deep operating expertise and just try your hand at angel investing and you don't have to have money to angel invest it sounds crazy but now with platforms like angel list if you have access to deal flow you can help syndicate it and it might it might take a little while But with practice and with the right relationships, you can build up a track record through syndicating angel deals, prove that you can get differentiated deal flow, and take it from there.
I think that this is an interesting trend that we're seeing is the democratization of venture capital. It used to very much be the quintessential old boys club on Sand Hill Road. I like to call it like an entrepreneur's retirement home where you'd have a lot of entrepreneurs or investors who had nice cushy lives hanging out in Palo Alto and just kind of investing in their friends and not investing. It used to be until pre-COVID that the vast majority of Bay Area VCs would not invest outside the Bay Area because they wanted to be within driving range of the board meeting.
That's completely changed. And venture is completely globalized. And so now you can have venture investors anywhere in the world. And you're seeing the legacy, the traditional venture funds are investing anywhere in the world, which is amazing.
And so the truth is that I saw, I think Turner Novak, shouting out him again, And I think he built a fantasy venture portfolio online. As part of his tweeting, he basically built a fantasy portfolio. He attracted the attention of an open-minded, high net worth individual. He ran a fund for him, did very well, continued to build his audience.
And now he has a fund. It's hustle, it's grit, tenacity, and it's making a name for yourself. And so you can always do it the traditional way, which is apprenticing at the storied funds. And you'll see a lot of people do that.
Insight is a really famous fund that develops talent. They attract it from the top Ivy League schools. And then you can also do the traditional investment banking business school route for sure. That's probably the best way to get in is to get into one of those hallowed institutions and to compete in the very, very selective recruiting processes.
That's still the norm, but that's certainly not the only way. And I see entrepreneurial driven people breaking into the industry all the time. Yeah, no, I think that was really helpful. There's definitely so many ways.
Like Turner is definitely a great example of like a new and interesting way to get into that world. And heading into like our final questions, what's a secret obsession of yours that not many people know about? Distance running. I mean I actually it's a big part of my identity so if people know me they probably know this but I I ran track and field in college I still run track and field it's been a dream of mine to break four minutes in the mile I have a baby now so it's looking a little bit less likely but I'm still running 60 to 80 miles a week training very hard I admire I don't know if you know of Nick Willis.
New Zealand has a storied running tradition and Nick Willis is a hero of mine. He's still running sub four minute miles late into his thirties. And so I am obsessed with distance running. Super cool.
And finally, what's the latest publicly announced investment you've made and why did you make it? Well, we have a very high cadence, so I can't tell you what the latest announced one is, but I can tell you one of the latest big investments we made is a business called Mundi, which I'm on the board of. Mundi is a business that we incubated. We haven't touched on this, but once or twice a year, we will actually be very hands-on and help form a business.
And we work with very entrepreneurial MBAs and we will precede them and we will help them assemble their founding team. Mundi is trade factoring for exporters and the core business is lending to Mexican exporters who trade into the US. And they found an amazing pain point. The business is only a year and a half fold and they've grown like 50 or a hundred X.
They just raised a $16 million series A led by Union Square Ventures. And we were able to invest more in this round. And this is a business where we have healthy ownership. Martine is a fantastic operator.
He actually used to work at OLX, which is Fabrice's startup. And he worked at BCG. And he is a really just excellent, excellent operator. And it's been an honor to see him go from the ideation stage when we were just brainstorming ideas in our conference room to now having raised over 20 million in venture capital and growing like a weed.
Very interesting. It's cool to know that you are looking into like the incubation model as well and it's working out. Yes, yes, it's very interesting. Cool.
That's all the questions that we have for today, Jeff. Thanks so much for joining me. Really appreciate your time and I think it was really insightful. Thank you for the kind words.
I hope people found it interesting. Thank you.
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