Mario Schlosser

Co-founder & President of Technology @OscarHealth; former Bridgewater, McKinsey, Eigentrust, Vostu, Stanford CS visiting scholar, U Hannover.

[Mario Schlosser @mariots]

Oscar Q1 numbers are proof that it really is possible to build a profitable healthcare business ever more beloved by members: 3.2M members, $4.6B revenue, $704M earnings from operations in Q1 '26.

But could YOU have done it?
Now you can test yourself... 1/2

[Oscar Health @OscarHealth]

Here are a few highlights from Oscar Health's latest earnings call, as reported this morning.

👉 Total Revenue: Increased to approximately $4.6B, up 53% year-over-year

👉 Earnings from Operations: $704M, up ~2.5X year-over-year

We also saw solid member growth. As of March 31st, we served ~3.2 million members, an increase of 56% over the same time last year.

Check out highlights from the quarter.

[Mario Schlosser @mariots]

I'm so curious how this works in practice: can Infantino directly talk to the ref or VAR over their earpiece? Or does the VAR call the ref and say "remember how we are supposed to protect Argentina, I was going back through footage from a while back and I think I found something so we can annul this goal"? Do the refs have a funny code name for Messi when they strategize how to help him? So interesting

[Mario Schlosser @mariots]

Brilliant stuff from @erenbali!

[Eren Bali @erenbali]

It's time to get out of stealth 👋

Today, we are launching @monogram_ai and announcing our $40m seed round led by DST and Lux Capital.

Monogram is the first AI app that was built around a visual interface, from the ground up.

We created a technology that generates an entire user interface on the fly, in just a few seconds. Ask anything, and instead of staring at a wall of text, you get an interactive visual response.

[Mario Schlosser @mariots]

Ancelotti walked straight off the pitch without talking to any of his players, only stopped briefly by Vini because he was lying on the ground in his way

[Mario Schlosser @mariots]

This is completely ahistoric and incorrect. The Green Party emerged from the environmentalist movement in the late 70s and early 80s, and from the "Ausserparlamentarische Opposition" student movements in the late 60s (students who were protesting that Nazism hadn't fully been excised from German institutions). The galvanizing event for nuclear shutdown was Chernobyl 1986, and Merkel (conservative) pulling the plug after Fukushima 2011. The Green Party was closely related to the German peace movement throughout the 80s, and Gorbachev himself credited the fact that he saw peaceful demonstrations against rearmament in the West with enabling him on Perestroika. The Green Party's first government in the early 2000s was the last government that executed major liberalization reforms to German labor markets.

You're not going to be a useful voice in helping solve any of the world's complex problems by being simplistic and wrong.

[Troll Football @TrollFootball]

We are so proud of you Cabo Verde

[Andreas Helbig @andyhelbig]

Extending its symbolism way beyond football, this tweet by the German chancellor sadly is a perfectly fitting description for Germany.

It exemplifies the mentality Germany needs to leave behind: celebrating mediocrity, abandoning ambition, managing a slow decline.

Let's reverse our trajectory, let's be more ambitious, let's demand excellence and performance. In our economy, in our investments, and also in football.

🇩🇪 deserves a winning mentality, from all of us.

[Atul Gawande @Atul_Gawande]

Independent analyses estimate that your actions to dismantle USAID and drastically reduce lifesaving foreign aid have already killed 700,000 people. Here are some of those people. 🧵https://t.co/aKdQpk9QTW

[Ryan Holiday @RyanHoliday]

When innovation and atrocity live in the same body, we don’t get to look away. Accountability shouldn’t pause for stock prices.

[Mario Schlosser @mariots]

@pokey_chi A lot more people for the US games!

[Mario Schlosser @mariots]

Oscar office doing the correct thing and showing all world cup games

[Mario Schlosser @mariots]

@youngerdinero Deniz Undav!

[Mario Schlosser @mariots]

@FlintDibble Has anyone ever actually met @GadSaad in person? Does he really exist or is he just a very obvious parody account? It is just comically self-delusional and grifteristic

[Mario Schlosser @mariots]

@HarryStebbings @pmarca He should ask himself that question a lot these days

[Mario Schlosser @mariots]

Most likely world cup finals that do not include any of the big teams, ordered by probability, taking into consideration probabilistic and actual impacts from match results to date:

https://t.co/p6ZhJBqLMv

[Tancredi Palmeri @tancredipalmeri]

La reazione di un liceo a Kinshasa in Congo assistendo al gol del pareggio contro il Portogallo.

La Coppa del Mondo rimarrà per sempre il sogno che unisce i popoli

[Mario Schlosser @mariots]

Yeah, that's it. The way the language works is that every pass through the entire model is a sample. Now, the final output is selecting for samples in which the US beat Paraguay 4:1. The US had a strength of 2.0, Paraguay of 2.3 before the tournament. Those reflect distributions of expected goals each team can score in a match. So the end-to-end tournament samples in which one team beats another one that wasn't seen as that much weaker by comparison biases towards that team continuing that run.

[Mario Schlosser @mariots]

My probabilistic programming language world cup model has shifted a bunch in its predictions. Left: original projections for probabilities of finals, right: updated projections.

The 16th-most likely final is now Argentina - USA!

Use it yourself here: https://t.co/p6ZhJBqLMv

[Mario Schlosser @mariots]

TORERZIELUNGSKÖRPERTEIL is the official FIFA term in German for the type of body parts a player can score goals with and thus determine whether a player is offside

[Mark T. Bertolini @mtbert]

@obfuscated_id @MJG_TRADES @JoshuaKushner @mariots Let’s do it! Drinks on me!

[Mario Schlosser @mariots]

Public tech companies love dismissing the cost of equity compensation. Yesterday's OSCR milestones is a case study on why dilution matters: we're now back above the valuation we had at our IPO - but the price is still 30% below it. That is all due to higher share count aka dilution since then.

It was incredibly tough to manage through the lean years of falling OSCR stock price and having to squeeze down on equity compensation as a result (employees of course look at equity compensation in today's dollar terms, not in share count, so you have to issue more shares just to make people think you're staying even). You have to do things like reducing vesting periods or stacking grants differently, or just outright cut. Most tech companies have probably never managed through something like that. Certainly private-going-public tech companies never have.

Well, at some point it's going to happen to everyone; and when it does, it is so tempting to dismiss increased net dilution due to annual equity comp as "not real" (you just don't really see/feel it anywhere right away). But then you look at valuation vs. price after several years, and you see it's very real. Of course, OSCR also illustrates the counterpoint: I'm extremely glad we got our convertibles done when we did & grateful to those investors, because without those we wouldn't be here now, ready for the individual market to be the future of healthcare.

It is however an excellent experience to manage through as a leadership team, and @mtbert knows extremely well how to manage through both the down cycles and the up cycles (which we're in now, thankfully!)